Initial commit

2025-11-09 03:18:49 +05:00
commit a59c1a7a01
33 changed files with 1688 additions and 0 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,33 @@
+HELP.md
+target/
+.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@ -0,0 +1,3 @@
+wrapperVersion=3.3.4
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.11/apache-maven-3.9.11-bin.zip
--- a/compose.yml
+++ b/compose.yml
@ -0,0 +1,44 @@
+services:
+  s3:
+    image: minio/minio:latest
+    container_name: composer_s3
+    command: server /data --console-address ":9001"
+    networks:
+      - mp3_composer
+    ports:
+      - 9000:9000
+  postgres:
+    image: postgres:alpine
+    container_name: composer_postgres
+    environment:
+      POSTGRES_PASSWORD: password
+      POSTGRES_USER: user
+      POSTGRES_DB: db
+    networks:
+      - mp3_composer
+    ports:
+      - 0:5432
+  redis:
+    image: redis:alpine
+    container_name: composer_redis
+    networks:
+      - mp3_composer
+
+  minio-setup:
+    image: minio/mc:latest
+    depends_on:
+      - s3
+    restart: on-failure
+    entrypoint: >
+      /bin/sh -c "
+      sleep 5;
+      mc alias set myminio http://s3:9000 minioadmin minioadmin;
+      mc mb myminio/composer-dev || true;
+      exit 0;
+      "
+    networks:
+      - mp3_composer
+
+networks:
+  mp3_composer:
+    driver: bridge
--- a/295
+++ b/295
@ -0,0 +1,295 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.4
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${JAVA_HOME-}" ]; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+scriptDir="$(dirname "$0")"
+scriptName="$(basename "$0")"
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+actualDistributionDir=""
+
+# First try the expected directory name (for regular distributions)
+if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then
+  if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then
+    actualDistributionDir="$distributionUrlNameMain"
+  fi
+fi
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if [ -z "$actualDistributionDir" ]; then
+  # enable globbing to iterate over items
+  set +f
+  for dir in "$TMP_DOWNLOAD_DIR"/*; do
+    if [ -d "$dir" ]; then
+      if [ -f "$dir/bin/$MVN_CMD" ]; then
+        actualDistributionDir="$(basename "$dir")"
+        break
+      fi
+    fi
+  done
+  set -f
+fi
+
+if [ -z "$actualDistributionDir" ]; then
+  verbose "Contents of $TMP_DOWNLOAD_DIR:"
+  verbose "$(ls -la "$TMP_DOWNLOAD_DIR")"
+  die "Could not find Maven distribution directory in extracted archive"
+fi
+
+verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
--- a/mvnw.cmd
+++ b/mvnw.cmd
@ -0,0 +1,189 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.4
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+
+$MAVEN_M2_PATH = "$HOME/.m2"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME"
+}
+
+if (-not (Test-Path -Path $MAVEN_M2_PATH)) {
+    New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null
+}
+
+$MAVEN_WRAPPER_DISTS = $null
+if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) {
+  $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists"
+} else {
+  $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists"
+}
+
+$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain"
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+$actualDistributionDir = ""
+
+# First try the expected directory name (for regular distributions)
+$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain"
+$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD"
+if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) {
+  $actualDistributionDir = $distributionUrlNameMain
+}
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if (!$actualDistributionDir) {
+  Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object {
+    $testPath = Join-Path $_.FullName "bin/$MVN_CMD"
+    if (Test-Path -Path $testPath -PathType Leaf) {
+      $actualDistributionDir = $_.Name
+    }
+  }
+}
+
+if (!$actualDistributionDir) {
+  Write-Error "Could not find Maven distribution directory in extracted archive"
+}
+
+Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
--- a/pom.xml
+++ b/pom.xml
@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.5.7</version>
+        <relativePath /> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.bivashy.backend</groupId>
+    <artifactId>mp3-playlist-composer</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>composer</name>
+    <description>Playlist Composer backend</description>
+    <url />
+    <licenses>
+        <license />
+    </licenses>
+    <developers>
+        <developer />
+    </developers>
+    <scm>
+        <connection />
+        <developerConnection />
+        <tag />
+        <url />
+    </scm>
+    <properties>
+        <java.version>21</java.version>
+
+        <modelmapper.version>3.2.4</modelmapper.version>
+    </properties>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>software.amazon.awssdk</groupId>
+                <artifactId>bom</artifactId>
+                <version>2.38.1</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-oauth2-client</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-quartz</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.flywaydb</groupId>
+            <artifactId>flyway-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.flywaydb</groupId>
+            <artifactId>flyway-database-postgresql</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>software.amazon.awssdk</groupId>
+            <artifactId>s3</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.modelmapper</groupId>
+            <artifactId>modelmapper</artifactId>
+            <version>${modelmapper.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
--- a/src/main/java/com/bivashy/backend/composer/ComposerApplication.java
+++ b/src/main/java/com/bivashy/backend/composer/ComposerApplication.java
@ -0,0 +1,13 @@
+package com.bivashy.backend.composer;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ComposerApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(ComposerApplication.class, args);
+	}
+
+}
--- a/src/main/java/com/bivashy/backend/composer/auth/CustomUserDetails.java
+++ b/src/main/java/com/bivashy/backend/composer/auth/CustomUserDetails.java
@ -0,0 +1,40 @@
+package com.bivashy.backend.composer.auth;
+
+import java.util.Collection;
+import java.util.Collections;
+
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+
+public class CustomUserDetails implements UserDetails {
+    private final long id;
+    private final String username;
+    private final String password;
+
+    public CustomUserDetails(long id, String username, String password) {
+        this.id = id;
+        this.username = username;
+        this.password = password;
+    }
+
+    @Override
+    public Collection<? extends GrantedAuthority> getAuthorities() {
+        // TODO: Authority implementation
+        return Collections.emptyList();
+    }
+
+    @Override
+    public String getPassword() {
+        return password;
+    }
+
+    @Override
+    public String getUsername() {
+        return username;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/config/CORSConfig.java
+++ b/src/main/java/com/bivashy/backend/composer/config/CORSConfig.java
@ -0,0 +1,25 @@
+package com.bivashy.backend.composer.config;
+
+import java.util.List;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.cors.CorsConfigurationSource;
+import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
+
+@Configuration
+public class CORSConfig {
+    @Bean
+    public CorsConfigurationSource corsConfigurationSource() {
+        CorsConfiguration configuration = new CorsConfiguration();
+        configuration.setAllowedOrigins(List.of("http://localhost:3000"));
+        configuration.setAllowedMethods(List.of("GET", "POST", "PUT", "DELETE"));
+        configuration.setAllowedHeaders(List.of("*"));
+        configuration.setAllowCredentials(true);
+        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
+        source.registerCorsConfiguration("/**", configuration);
+        return source;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/config/ModelMapperConfig.java
+++ b/src/main/java/com/bivashy/backend/composer/config/ModelMapperConfig.java
@ -0,0 +1,18 @@
+package com.bivashy.backend.composer.config;
+
+import org.modelmapper.ModelMapper;
+import org.modelmapper.config.Configuration.AccessLevel;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ModelMapperConfig {
+    @Bean
+    public ModelMapper modelMapper() {
+        ModelMapper modelMapper = new ModelMapper();
+        modelMapper.getConfiguration()
+                .setFieldAccessLevel(AccessLevel.PRIVATE)
+                .setFieldMatchingEnabled(true);
+        return modelMapper;
+    }
+}
--- a/src/main/java/com/bivashy/backend/composer/config/SecurityConfig.java
+++ b/src/main/java/com/bivashy/backend/composer/config/SecurityConfig.java
@ -0,0 +1,47 @@
+package com.bivashy.backend.composer.config;
+
+import java.util.Optional;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.Customizer;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.SecurityFilterChain;
+
+import com.bivashy.backend.composer.auth.CustomUserDetails;
+import com.bivashy.backend.composer.model.User;
+import com.bivashy.backend.composer.repository.UserRepository;
+import com.bivashy.backend.composer.service.CustomUserDetailsService;
+
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+    @Bean
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+        http.authorizeHttpRequests(auth -> auth
+                .anyRequest().authenticated())
+                .httpBasic(Customizer.withDefaults())
+                // TODO: Temporary to test API, remove after testing
+                .csrf(c -> c.disable());
+        return http.build();
+    }
+
+    @Bean
+    public CustomUserDetailsService customUserDetailsService(UserRepository repository) {
+        CustomUserDetails defaultUser = new CustomUserDetails(1, "user", passwordEncoder().encode("password"));
+        Optional<User> user = repository.findById(defaultUser.getId());
+        if (user.isEmpty()) {
+            repository.save(new User(defaultUser.getUsername()));
+        }
+        return new CustomUserDetailsService(defaultUser);
+    }
+
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+}
--- a/src/main/java/com/bivashy/backend/composer/controller/PlaylistController.java
+++ b/src/main/java/com/bivashy/backend/composer/controller/PlaylistController.java
@ -0,0 +1,34 @@
+package com.bivashy.backend.composer.controller;
+
+import java.util.List;
+
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.bivashy.backend.composer.auth.CustomUserDetails;
+import com.bivashy.backend.composer.dto.playlist.PlaylistCreateDTO;
+import com.bivashy.backend.composer.dto.playlist.PlaylistReadDTO;
+import com.bivashy.backend.composer.service.PlaylistService;
+
+@RestController
+public class PlaylistController {
+    private final PlaylistService service;
+
+    public PlaylistController(PlaylistService service) {
+        this.service = service;
+    }
+
+    @GetMapping("/playlists")
+    public List<PlaylistReadDTO> playlists(@AuthenticationPrincipal CustomUserDetails user) {
+        return service.findPlaylists(user.getId());
+    }
+
+    @PostMapping("/playlist")
+    public PlaylistReadDTO createPlaylist(@AuthenticationPrincipal CustomUserDetails user,
+            @RequestBody PlaylistCreateDTO playlist) {
+        return service.createPlaylist(user.getId(), playlist);
+    }
+}
--- a/src/main/java/com/bivashy/backend/composer/converter/PlaylistConverter.java
+++ b/src/main/java/com/bivashy/backend/composer/converter/PlaylistConverter.java
@ -0,0 +1,22 @@
+package com.bivashy.backend.composer.converter;
+
+import org.springframework.stereotype.Component;
+
+import com.bivashy.backend.composer.dto.playlist.PlaylistCreateDTO;
+import com.bivashy.backend.composer.dto.playlist.PlaylistReadDTO;
+import com.bivashy.backend.composer.model.Playlist;
+import com.bivashy.backend.composer.model.User;
+
+@Component
+public class PlaylistConverter {
+    public PlaylistReadDTO convertToRead(Playlist playlist) {
+        return new PlaylistReadDTO(playlist.getId(), playlist.getOwner().getId(), playlist.getTitle(),
+                playlist.getCreatedAt(),
+                playlist.getUpdatedAt());
+    }
+
+    public Playlist convertFromCreate(long userId, PlaylistCreateDTO playlist) {
+        return new Playlist(new User(userId), playlist.title());
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/dto/playlist/PlaylistCreateDTO.java
+++ b/src/main/java/com/bivashy/backend/composer/dto/playlist/PlaylistCreateDTO.java
@ -0,0 +1,4 @@
+package com.bivashy.backend.composer.dto.playlist;
+
+public record PlaylistCreateDTO(String title) {
+}
--- a/src/main/java/com/bivashy/backend/composer/dto/playlist/PlaylistReadDTO.java
+++ b/src/main/java/com/bivashy/backend/composer/dto/playlist/PlaylistReadDTO.java
@ -0,0 +1,14 @@
+package com.bivashy.backend.composer.dto.playlist;
+
+import java.time.LocalDateTime;
+
+public record PlaylistReadDTO(
+        long id,
+        long ownerId,
+        String title,
+        LocalDateTime createdAt,
+        LocalDateTime updatedAt) {
+    public PlaylistReadDTO withUserId(long userId) {
+        return new PlaylistReadDTO(this.id, userId, this.title, this.createdAt, this.updatedAt);
+    }
+}
--- a/src/main/java/com/bivashy/backend/composer/model/Playlist.java
+++ b/src/main/java/com/bivashy/backend/composer/model/Playlist.java
@ -0,0 +1,79 @@
+package com.bivashy.backend.composer.model;
+
+import java.time.LocalDateTime;
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.JoinTable;
+import jakarta.persistence.ManyToMany;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OrderBy;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "playlist")
+public class Playlist {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "owner_id", nullable = false)
+    private User owner;
+
+    @Column(nullable = false, length = 500)
+    private String title;
+
+    @Column(name = "created_at", nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at", nullable = false)
+    private LocalDateTime updatedAt;
+
+    @ManyToMany
+    @JoinTable(name = "playlist_track", joinColumns = @JoinColumn(name = "playlist_id"), inverseJoinColumns = @JoinColumn(name = "track_id"))
+    @OrderBy("order ASC")
+    private Set<Track> tracks = new HashSet<>();
+
+    Playlist() {
+    }
+
+    public Playlist(User owner, String title) {
+        this.owner = owner;
+        this.title = title;
+        this.createdAt = LocalDateTime.now();
+        this.updatedAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public User getOwner() {
+        return owner;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public Set<Track> getTracks() {
+        return tracks;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/model/SourceProvider.java
+++ b/src/main/java/com/bivashy/backend/composer/model/SourceProvider.java
@ -0,0 +1,47 @@
+package com.bivashy.backend.composer.model;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "source_provider")
+public class SourceProvider {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, length = 500)
+    private String name;
+
+    @OneToMany(mappedBy = "provider", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<SourceType> sourceTypes = new HashSet<>();
+
+    SourceProvider() {
+    }
+
+    public SourceProvider(String name) {
+        this.name = name;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Set<SourceType> getSourceTypes() {
+        return sourceTypes;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/model/SourceType.java
+++ b/src/main/java/com/bivashy/backend/composer/model/SourceType.java
@ -0,0 +1,58 @@
+package com.bivashy.backend.composer.model;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "source_type")
+public class SourceType {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "provider_id", nullable = false)
+    private SourceProvider provider;
+
+    @Column(nullable = false, length = 500)
+    private String name;
+
+    @OneToMany(mappedBy = "sourceType", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<TrackSource> trackSources = new HashSet<>();
+
+    SourceType() {
+    }
+
+    public SourceType(String name) {
+        this.name = name;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public SourceProvider getProvider() {
+        return provider;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Set<TrackSource> getTrackSources() {
+        return trackSources;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/model/Track.java
+++ b/src/main/java/com/bivashy/backend/composer/model/Track.java
@ -0,0 +1,65 @@
+package com.bivashy.backend.composer.model;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToMany;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "track")
+public class Track {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "source_id", nullable = false)
+    private TrackSource source;
+
+    @OneToMany(mappedBy = "track", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<TrackMetadata> metadata = new HashSet<>();
+
+    @OneToMany(mappedBy = "track", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<TrackVersion> versions = new HashSet<>();
+
+    @ManyToMany(mappedBy = "tracks")
+    private Set<Playlist> playlists = new HashSet<>();
+
+    Track() {
+    }
+
+    public Track(TrackSource source) {
+        this.source = source;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public TrackSource getSource() {
+        return source;
+    }
+
+    public Set<TrackMetadata> getMetadata() {
+        return metadata;
+    }
+
+    public Set<TrackVersion> getVersions() {
+        return versions;
+    }
+
+    public Set<Playlist> getPlaylists() {
+        return playlists;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/model/TrackMetadata.java
+++ b/src/main/java/com/bivashy/backend/composer/model/TrackMetadata.java
@ -0,0 +1,91 @@
+package com.bivashy.backend.composer.model;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.OneToOne;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "track_metadata")
+public class TrackMetadata {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @OneToOne
+    @JoinColumn(name = "track_id", nullable = false)
+    private Track track;
+
+    @Column(nullable = false, length = 500)
+    private String title;
+
+    @Column(name = "audio_path", nullable = false, length = 500)
+    private String audioPath;
+
+    @Column(length = 500)
+    private String artist;
+
+    @Column(name = "thumbnail_path", length = 500)
+    private String thumbnailPath;
+
+    @Column(name = "duration_seconds")
+    private Integer durationSeconds;
+
+    @OneToMany(mappedBy = "metadata", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<TrackVersion> versions = new HashSet<>();
+
+    TrackMetadata() {
+    }
+
+    public TrackMetadata(Track track, String title, String audioPath, String artist, String thumbnailPath,
+            Integer durationSeconds) {
+        this.track = track;
+        this.title = title;
+        this.audioPath = audioPath;
+        this.artist = artist;
+        this.thumbnailPath = thumbnailPath;
+        this.durationSeconds = durationSeconds;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Track getTrack() {
+        return track;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getAudioPath() {
+        return audioPath;
+    }
+
+    public String getArtist() {
+        return artist;
+    }
+
+    public String getThumbnailPath() {
+        return thumbnailPath;
+    }
+
+    public Integer getDurationSeconds() {
+        return durationSeconds;
+    }
+
+    public Set<TrackVersion> getVersions() {
+        return versions;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/model/TrackSource.java
+++ b/src/main/java/com/bivashy/backend/composer/model/TrackSource.java
@ -0,0 +1,91 @@
+package com.bivashy.backend.composer.model;
+
+import java.time.LocalDateTime;
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "track_source")
+public class TrackSource {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "source_url", nullable = false, length = 500)
+    private String sourceUrl;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "source_type_id", nullable = false)
+    private SourceType sourceType;
+
+    @Column(name = "last_fetched_at", nullable = false)
+    private LocalDateTime lastFetchedAt;
+
+    @Column(name = "created_at", nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at", nullable = false)
+    private LocalDateTime updatedAt;
+
+    @OneToMany(mappedBy = "source", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<Track> tracks = new HashSet<>();
+
+    @OneToMany(mappedBy = "source", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<TrackVersion> trackVersions = new HashSet<>();
+
+    TrackSource() {
+    }
+
+    public TrackSource(String sourceUrl, SourceType sourceType, LocalDateTime lastFetchedAt) {
+        this.sourceUrl = sourceUrl;
+        this.sourceType = sourceType;
+        this.lastFetchedAt = lastFetchedAt;
+        this.createdAt = LocalDateTime.now();
+        this.updatedAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getSourceUrl() {
+        return sourceUrl;
+    }
+
+    public SourceType getSourceType() {
+        return sourceType;
+    }
+
+    public LocalDateTime getLastFetchedAt() {
+        return lastFetchedAt;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public Set<Track> getTracks() {
+        return tracks;
+    }
+
+    public Set<TrackVersion> getTrackVersions() {
+        return trackVersions;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/model/TrackVersion.java
+++ b/src/main/java/com/bivashy/backend/composer/model/TrackVersion.java
@ -0,0 +1,67 @@
+package com.bivashy.backend.composer.model;
+
+import java.time.LocalDateTime;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "track_version")
+public class TrackVersion {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "track_id", nullable = false)
+    private Track track;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "metadata_id", nullable = false)
+    private TrackMetadata metadata;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "source_id", nullable = false)
+    private TrackSource source;
+
+    @Column(name = "created_at", nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+    TrackVersion() {
+    }
+
+    public TrackVersion(Track track, TrackMetadata metadata, TrackSource source) {
+        this.track = track;
+        this.metadata = metadata;
+        this.source = source;
+        this.createdAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Track getTrack() {
+        return track;
+    }
+
+    public TrackMetadata getMetadata() {
+        return metadata;
+    }
+
+    public TrackSource getSource() {
+        return source;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/model/User.java
+++ b/src/main/java/com/bivashy/backend/composer/model/User.java
@ -0,0 +1,70 @@
+package com.bivashy.backend.composer.model;
+
+import java.time.LocalDateTime;
+import java.util.HashSet;
+import java.util.Set;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class User {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, length = 500)
+    private String name;
+
+    @Column(name = "created_at", nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at", nullable = false)
+    private LocalDateTime updatedAt;
+
+    @OneToMany(mappedBy = "owner", cascade = CascadeType.ALL, orphanRemoval = true)
+    private Set<Playlist> playlists = new HashSet<>();
+
+    User() {
+    }
+
+    public User(Long id) {
+        this.id = id;
+        this.createdAt = LocalDateTime.now();
+        this.updatedAt = LocalDateTime.now();
+    }
+
+    public User(String name) {
+        this.name = name;
+        this.createdAt = LocalDateTime.now();
+        this.updatedAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public Set<Playlist> getPlaylists() {
+        return playlists;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/repository/PlaylistRepository.java
+++ b/src/main/java/com/bivashy/backend/composer/repository/PlaylistRepository.java
@ -0,0 +1,18 @@
+package com.bivashy.backend.composer.repository;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import com.bivashy.backend.composer.model.Playlist;
+
+@Repository
+public interface PlaylistRepository extends JpaRepository<Playlist, Long> {
+    Optional<Playlist> findById(Long id);
+
+    Optional<Playlist> findByOwnerId(long id);
+
+    List<Playlist> findAllByOwnerId(long id);
+}
--- a/src/main/java/com/bivashy/backend/composer/repository/UserRepository.java
+++ b/src/main/java/com/bivashy/backend/composer/repository/UserRepository.java
@ -0,0 +1,13 @@
+package com.bivashy.backend.composer.repository;
+
+import com.bivashy.backend.composer.model.User;
+
+import java.util.Optional;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface UserRepository extends JpaRepository<User, Long> {
+    Optional<User> findById(long id);
+}
--- a/src/main/java/com/bivashy/backend/composer/service/CustomUserDetailsService.java
+++ b/src/main/java/com/bivashy/backend/composer/service/CustomUserDetailsService.java
@ -0,0 +1,23 @@
+package com.bivashy.backend.composer.service;
+
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Service;
+
+import com.bivashy.backend.composer.auth.CustomUserDetails;
+
+@Service
+public class CustomUserDetailsService implements UserDetailsService {
+    private final CustomUserDetails defaultUser;
+
+    public CustomUserDetailsService(CustomUserDetails defaultUser) {
+        this.defaultUser = defaultUser;
+    }
+
+    @Override
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        return defaultUser;
+    }
+
+}
--- a/src/main/java/com/bivashy/backend/composer/service/PlaylistService.java
+++ b/src/main/java/com/bivashy/backend/composer/service/PlaylistService.java
@ -0,0 +1,34 @@
+package com.bivashy.backend.composer.service;
+
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+
+import com.bivashy.backend.composer.converter.PlaylistConverter;
+import com.bivashy.backend.composer.dto.playlist.PlaylistCreateDTO;
+import com.bivashy.backend.composer.dto.playlist.PlaylistReadDTO;
+import com.bivashy.backend.composer.model.Playlist;
+import com.bivashy.backend.composer.repository.PlaylistRepository;
+
+@Service
+public class PlaylistService {
+    private final PlaylistRepository repository;
+    private final PlaylistConverter converter;
+
+    public PlaylistService(PlaylistRepository repository, PlaylistConverter converter) {
+        this.repository = repository;
+        this.converter = converter;
+    }
+
+    public PlaylistReadDTO createPlaylist(long userId, PlaylistCreateDTO playlist) {
+        Playlist result = repository.save(converter.convertFromCreate(userId, playlist));
+        return converter.convertToRead(result);
+    }
+
+    public List<PlaylistReadDTO> findPlaylists(long userId) {
+        return repository.findAllByOwnerId(userId)
+                .stream()
+                .map(converter::convertToRead)
+                .toList();
+    }
+}
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@ -0,0 +1,14 @@
+spring:
+  application:
+    name: composer
+  datasource:
+    driver-class-name: org.postgresql.Driver
+    password: password
+    url: jdbc:postgresql://postgres:5432/db
+    username: user
+
+logging:
+  level:
+    org:
+      springframework:
+        security: DEBUG
--- a/src/main/resources/db/migration/V1_10__create_base_tables.sql
+++ b/src/main/resources/db/migration/V1_10__create_base_tables.sql
@ -0,0 +1,85 @@
+CREATE TABLE IF NOT EXISTS "users" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "name" varchar(500) NOT NULL,
+    "created_at" timestamp NOT NULL DEFAULT NOW(),
+    "updated_at" timestamp NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS "source_provider" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "name" varchar(500) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS "source_type" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "provider_id" bigint NOT NULL,
+    "name" varchar(500) NOT NULL,
+    CONSTRAINT "fk_source_type_provider_id"
+        FOREIGN KEY ("provider_id") REFERENCES "source_provider" ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "track_source" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "source_url" varchar(500) NOT NULL,
+    "source_type_id" bigint NOT NULL,
+    "last_fetched_at" timestamp NOT NULL DEFAULT NOW(),
+    "created_at" timestamp NOT NULL DEFAULT NOW(),
+    "updated_at" timestamp NOT NULL DEFAULT NOW(),
+    CONSTRAINT "fk_track_source_source_type_id"
+        FOREIGN KEY ("source_type_id") REFERENCES "source_type" ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "track" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "source_id" bigint NOT NULL,
+    CONSTRAINT "fk_track_source_id"
+        FOREIGN KEY ("source_id") REFERENCES "track_source" ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "track_metadata" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "track_id" bigint NOT NULL,
+    "title" varchar(500) NOT NULL,
+    "audio_path" varchar(500) NOT NULL,
+    "artist" varchar(500),
+    "thumbnail_path" varchar(500),
+    "duration_seconds" integer,
+    CONSTRAINT "fk_track_metadata_track_id"
+        FOREIGN KEY ("track_id") REFERENCES "track" ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "playlist" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "owner_id" bigint NOT NULL,
+    "title" varchar(500) NOT NULL,
+    "created_at" timestamp NOT NULL DEFAULT NOW(),
+    "updated_at" timestamp NOT NULL DEFAULT NOW(),
+    CONSTRAINT "fk_playlist_owner_id"
+        FOREIGN KEY ("owner_id") REFERENCES "users" ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "playlist_track" (
+    "playlist_id" bigint NOT NULL,
+    "track_id" bigint NOT NULL,
+    "order" bigint NOT NULL,
+    CONSTRAINT "pk_playlist_track" PRIMARY KEY ("playlist_id", "track_id"),
+    CONSTRAINT "fk_playlist_track_playlist_id"
+        FOREIGN KEY ("playlist_id") REFERENCES "playlist" ("id"),
+    CONSTRAINT "fk_playlist_track_track_id"
+        FOREIGN KEY ("track_id") REFERENCES "track" ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "track_version" (
+    "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    "track_id" bigint NOT NULL,
+    "metadata_id" bigint NOT NULL,
+    "source_id" bigint NOT NULL,
+    "created_at" timestamp NOT NULL DEFAULT NOW(),
+    CONSTRAINT "fk_track_version_track_id"
+        FOREIGN KEY ("track_id") REFERENCES "track" ("id"),
+    CONSTRAINT "fk_track_version_metadata_id"
+        FOREIGN KEY ("metadata_id") REFERENCES "track_metadata" ("id"),
+    CONSTRAINT "fk_track_version_source_id"
+        FOREIGN KEY ("source_id") REFERENCES "track_source" ("id")
+);
+
--- a/src/main/resources/db/migration/V1_20__insert_enums.sql
+++ b/src/main/resources/db/migration/V1_20__insert_enums.sql
@ -0,0 +1,17 @@
+INSERT INTO "source_provider" ("id", "name")
+OVERRIDING SYSTEM VALUE
+VALUES
+    (1, 'YOUTUBE'),
+    (2, 'LOCAL'),
+    (3, 'EXTERNAL')
+ON CONFLICT ("id") DO NOTHING;
+
+INSERT INTO "source_type" ("id", "provider_id", "name")
+OVERRIDING SYSTEM VALUE
+VALUES
+    (1, 1, 'VIDEO'),
+    (2, 1, 'PLAYLIST'),
+    (3, 2, 'FILE'),
+    (4, 3, 'URL')
+ON CONFLICT ("id") DO NOTHING;
+
--- a/src/main/resources/flyway.conf
+++ b/src/main/resources/flyway.conf
@ -0,0 +1,5 @@
+flyway.user=user
+flyway.password=password
+flyway.schemas=public
+flyway.url=jdbc:postgresql://postgres:5432/db
+flyway.locations=filesystem:db/migration
--- a/src/test/java/com/bivashy/backend/composer/ComposerApplicationTests.java
+++ b/src/test/java/com/bivashy/backend/composer/ComposerApplicationTests.java
@ -0,0 +1,13 @@
+package com.bivashy.backend.composer;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ComposerApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}