import {LocalRecording} from './local-recording.js';

// Blob URLs live only as long as this page's review. No storage persistence,
// automatic download, media upload, or access to the numeric reporting channel.
export function reviewControls(document) {
    const el=id=>document.getElementById(id);
    let url=null;
    function clear() {
        el('replay').pause();el('replay').removeAttribute('src');el('replay').load();
        el('download-recording').removeAttribute('href');el('review').hidden=true;
        if(url)URL.revokeObjectURL(url);
        url=null;
    }
    const recorder=new LocalRecording({
        onStatus:message=>{el('record-status').textContent=message;},
        onReady:blob=>{
            clear();url=URL.createObjectURL(blob);
            el('replay').src=url;el('download-recording').href=url;
            el('download-recording').download=`av-review.${blob.type.includes('mp4')?'mp4':'webm'}`;
            el('review').hidden=false;
        },
    });
    el('record-review').disabled=!recorder.supported;
    if(!recorder.supported)el('record-status').textContent='Local recording is unavailable in this browser.';
    el('discard-recording').onclick=()=>{recorder.discard();clear();el('record-status').textContent='Clip cleared.';};
    return {
        begin(stream) {
            recorder.discard();clear();
            if(el('record-review').checked)return recorder.start(stream);
            el('record-status').textContent='Not recording';return false;
        },
        lock(locked){el('record-review').disabled=locked||!recorder.supported;},
        finish(){recorder.finish();},
        discard(){recorder.discard();clear();},
    };
}