bethaus-app/static/audioplayer.js

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JavaScript
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// read the CSS variable from :root (or any selector)
const cssVar = getComputedStyle(document.documentElement).getPropertyValue('--dark-background').trim();
const playerButton = document.querySelector('.player-button'),
audio = document.querySelector('audio'),
timeline = document.querySelector('.timeline'),
timeInfo = document.getElementById('timeInfo'),
playIcon = `
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="${cssVar}">
<path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM9.555 7.168A1 1 0 008 8v4a1 1 0 001.555.832l3-2a1 1 0 000-1.664l-3-2z" clip-rule="evenodd" />
</svg>
`,
pauseIcon = `
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="${cssVar}">
<path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zM7 8a1 1 0 012 0v4a1 1 0 11-2 0V8zm5-1a1 1 0 00-1 1v4a1 1 0 102 0V8a1 1 0 00-1-1z" clip-rule="evenodd" />
</svg>
`,
soundIcon = `
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="${cssVar}">
<path fill-rule="evenodd" d="M9.383 3.076A1 1 0 0110 4v12a1 1 0 01-1.707.707L4.586 13H2a1 1 0 01-1-1V8a1 1 0 011-1h2.586l3.707-3.707a1 1 0 011.09-.217zM14.657 2.929a1 1 0 011.414 0A9.972 9.972 0 0119 10a9.972 9.972 0 01-2.929 7.071 1 1 0 01-1.414-1.414A7.971 7.971 0 0017 10c0-2.21-.894-4.208-2.343-5.657a1 1 0 010-1.414zm-2.829 2.828a1 1 0 011.415 0A5.983 5.983 0 0115 10a5.984 5.984 0 01-1.757 4.243 1 1 0 01-1.415-1.415A3.984 3.984 0 0013 10a3.983 3.983 0 00-1.172-2.828 1 1 0 010-1.415z" clip-rule="evenodd" />
</svg>
`
function toggleAudio () {
if (audio.paused) {
audio.play();
playerButton.innerHTML = pauseIcon;
} else {
audio.pause();
playerButton.innerHTML = playIcon;
}
}
playerButton.addEventListener('click', toggleAudio);
let isSeeking = false;
// --- Slider (Timeline) events ---
// Mouse events
timeline.addEventListener('mousedown', () => { isSeeking = true; });
timeline.addEventListener('mouseup', () => { isSeeking = false;
changeSeek(); // Update the audio currentTime based on the slider position
});
// Touch events
timeline.addEventListener('touchstart', () => { isSeeking = true; });
timeline.addEventListener('touchend', () => { isSeeking = false;
changeSeek();
});
timeline.addEventListener('touchcancel', () => { isSeeking = false; });
// --- When metadata is loaded, set slider range in seconds ---
audio.addEventListener('loadedmetadata', () => {
timeline.min = 0;
timeline.max = audio.duration;
});
// --- Seek function: directly set audio.currentTime using slider's value (in seconds) ---
function changeSeek() {
audio.currentTime = timeline.value;
}
// --- Utility: Format seconds as mm:ss ---
function formatTime(seconds) {
const minutes = Math.floor(seconds / 60);
const secs = Math.floor(seconds % 60);
return `${minutes < 10 ? '0' : ''}${minutes}:${secs < 10 ? '0' : ''}${secs}`;
}
// --- Update timeline, time info, and media session on each time update ---
audio.ontimeupdate = function() {
// --- Update the slider thumb position (in seconds) while playing ---
if (!isSeeking) {
timeline.value = audio.currentTime;
const percentagePosition = (audio.currentTime / audio.duration) * 100;
timeline.style.backgroundSize = `${percentagePosition}% 100%`;
}
// --- Update the time display ---
const currentTimeFormatted = formatTime(audio.currentTime);
const durationFormatted = isNaN(audio.duration) ? "00:00" : formatTime(audio.duration);
timeInfo.innerHTML = `${currentTimeFormatted} / ${durationFormatted}`;
if ('mediaSession' in navigator &&
'setPositionState' in navigator.mediaSession &&
!isNaN(audio.duration)) {
navigator.mediaSession.setPositionState({
duration: audio.duration,
playbackRate: audio.playbackRate,
position: audio.currentTime
});
}
};
// --- When audio ends ---
audio.onended = function() {
playerButton.innerHTML = playIcon;
};
async function downloadAudio() {
const audio = document.getElementById('globalAudio');
const src = audio.currentSrc || audio.src;
if (!src) return;
// Build the URL with your download flag + cachebuster
const downloadUrl = new URL(src, window.location.href);
downloadUrl.searchParams.set('download', 'true');
downloadUrl.searchParams.set('_', Date.now());
// Create a “real” link to that URL and click it
const a = document.createElement('a');
a.href = downloadUrl.toString();
// NOTE: do NOT set a.download here we want the server's Content-Disposition to drive it
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
}