<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Audio Conversion Form</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 20px;
        }
        form {
            max-width: 600px;
            margin: auto;
            padding: 20px;
            border: 1px solid #ccc;
            border-radius: 10px;
            background-color: #f9f9f9;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        input, select {
            width: 100%;
            margin-bottom: 15px;
            padding: 8px;
            box-sizing: border-box;
        }
        button {
            padding: 10px 20px;
            background-color: #007BFF;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
        }
        button:disabled {
            background-color: #ccc;
        }
        .error {
            color: red;
            font-size: 0.9em;
        }
    </style>
</head>
<body>

    <h1>Audio Conversion Form</h1>
    <p>Fill in the form below to convert your audio files. Please ensure all inputs are valid.</p>

    <form id="conversionForm" enctype="multipart/form-data">
        <label for="source">Source File (Required):</label>
        <input type="file" id="source" name="source" accept=".wav,.mp3" required>
        <span id="sourceError" class="error"></span>

        <label for="target">Target File (Required):</label>
        <input type="file" id="target" name="target" accept=".wav,.mp3" required>
        <span id="targetError" class="error"></span>

        <label for="diffusion_steps">Diffusion Steps (Integer, Required):</label>
        <input type="number" id="diffusion_steps" name="diffusion_steps" min="1" step="1" value="25" required>
        <span id="stepsError" class="error"></span>

        <label for="length_adjust">Length Adjust (Float, Optional):</label>
        <input type="number" id="length_adjust" name="length_adjust" step="0.01" value="1" required>

        <label for="inference_cfg_rate">Inference CFG Rate (Float, Optional):</label>
        <input type="number" id="inference_cfg_rate" name="inference_cfg_rate" step="0.01" value="0.7" required>

        <label for="f0_condition">F0 Condition (Yes/No):</label>
        <select id="f0_condition" name="f0_condition" required>
            <option value="true">Yes</option>
            <option value="false" seleced>No</option>
        </select>

        <label for="auto_f0_adjust">Auto F0 Adjust (Yes/No):</label>
        <select id="auto_f0_adjust" name="auto_f0_adjust" required>
            <option value="true" seleced>Yes</option>
            <option value="false">No</option>
        </select>

        <label for="pitch_shift">Pitch Shift (Integer, Optional):</label>
        <input type="number" id="pitch_shift" name="pitch_shift" step="1" value="0" required>

        <button type="submit">Convert</button>
    </form>

    <p id="outputMessage"></p>
    <audio id="resultAudio" controls style="display:none;"></audio>

    <script>
        document.getElementById('conversionForm').addEventListener('submit', async (event) => {
            event.preventDefault(); // Prevent form submission
            const form = event.target;
            const formData = new FormData(form);

            // Reset error messages
            document.querySelectorAll('.error').forEach(el => el.textContent = '');

            // Validate inputs
            let isValid = true;

            if (!formData.get('source')) {
                document.getElementById('sourceError').textContent = 'Source file is required.';
                isValid = false;
            }

            if (!formData.get('target')) {
                document.getElementById('targetError').textContent = 'Target file is required.';
                isValid = false;
            }

            if (!isValid) return;

            try {
                // Disable the button to prevent multiple submissions
                form.querySelector('button').disabled = true;

                const response = await fetch('https://soiz-seed-vc-api.hf.space/convert', {
                    method: 'POST',
                    body: formData,
                });

                if (!response.ok) {
                    throw new Error(`Server error: ${response.statusText}`);
                }

                // Handle the response
                const blob = await response.blob();
                const audioURL = URL.createObjectURL(blob);

                const resultAudio = document.getElementById('resultAudio');
                resultAudio.src = audioURL;
                resultAudio.style.display = 'block';
                document.getElementById('outputMessage').textContent = 'Conversion successful! Listen to the result below.';
            } catch (error) {
                console.error(error);
                document.getElementById('outputMessage').textContent = `Error: ${error.message}`;
            } finally {
                form.querySelector('button').disabled = false;
            }
        });
    </script>

</body>
</html>