{% extends "base.html" %}

{% block title %}Config Editor{% endblock %}

{% block content %}
<br>
<div class="" style="margin-left: 20px; margin-right: 20px; margin-bottom: 20px;">
    <div class="flex justify mb-4 space-x-2">
        <button id="restore-button" onclick="restoreJson()" class="px-4 py-2 bg-blue text-black rounded-lg">Restore JSON</button>
        <button id="save-button" onclick="saveJson()" class="px-4 py-2 bg-green text-black rounded-lg duration-200">Save JSON</button>
    </div>

    <div id="jsoneditor" class="border rounded-lg shadow-lg" style="height: 750px; width: 100%;"></div>
</div>
{% endblock %}

{% block javascripts %}
<script src="https://cdn.jsdelivr.net/npm/jsoneditor@9.1.0/dist/jsoneditor.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/jsoneditor@9.1.0/dist/jsoneditor.min.css" />
<script src="https://cdn.jsdelivr.net/npm/sweetalert2@11"></script>

<script>
    const saveButton = document.getElementById("save-button");
    const container = document.getElementById("jsoneditor");

    const editor = new JSONEditor(container, {
        mode: "code",
        modes: ["code", "tree"],
        onChange: validateJson
    });

    // Function to validate the JSON and update UI elements
    function validateJson() {
        try {
            editor.get(); // Validate the JSON
            updateSaveButton(true);
            hideErrorMessage();
        } catch (error) {
            updateSaveButton(false);
            showErrorMessage("Invalid JSON! Please correct the errors.");
        }
    }

    // Function to update save button based on JSON validity
    function updateSaveButton(isValid) {
        saveButton.disabled = !isValid;
        saveButton.style.cursor = isValid ? "pointer" : "not-allowed";

        saveButton.style.setProperty('background-color', isValid ? "#28a745" : "#ccc", 'important');
        saveButton.style.setProperty('color', isValid ? "#fff" : "#666", 'important');
        //saveButton.style.setProperty('border-color', isValid ? "#28a745" : "#ccc", 'important');
    }

    // Function to show error message with SweetAlert2
    function showErrorMessage(message) {
        Swal.fire({
            title: "Error",
            text: message,
            icon: "error",
            showConfirmButton: false,
            timer: 5000,
            position: 'top-right',
            toast: true,
            showClass: { popup: 'animate__animated animate__fadeInDown' },
            hideClass: { popup: 'animate__animated animate__fadeOutUp' }
        });
    }

    // Function to hide error message if JSON is fixed
    function hideErrorMessage() {
        Swal.close();
    }

    // Function to ask the user before saving and save the JSON if confirmed
    function saveJson() {
        Swal.fire({
            title: 'Are you sure?',
            text: 'Do you want to save the changes?',
            icon: 'warning',
            showCancelButton: true,
            confirmButtonText: 'Yes, save it!',
            cancelButtonText: 'Cancel',
            reverseButtons: true
        }).then((result) => {
            if (result.isConfirmed) {
                fetch("{{ url_for('set_file') }}", {
                    method: "POST",
                    headers: { "Content-Type": "application/json" },
                    body: JSON.stringify(editor.get())
                })
                    .then(() => {
                        Swal.fire('Saved!', 'Your changes have been saved.', 'success');
                    })
                    .catch(error => {
                        Swal.fire('Error!', 'There was an error saving your data.', 'error');
                        console.error("Error saving JSON:", error);
                    });
            }
        });
    }

    // Function to load JSON from the server
    function restoreJson() {
        fetch("{{ url_for('get_file') }}")
            .then(response => response.json())
            .then(json => editor.set(json))
            .catch(error => console.error("Error loading JSON:", error));
    }

    restoreJson(); // Initial JSON load
</script>
{% endblock %}