diff --git a/app/static/js/app.jsx b/app/static/js/app.jsx index b3af8b1..1f7d963 100644 --- a/app/static/js/app.jsx +++ b/app/static/js/app.jsx @@ -9025,6 +9025,7 @@ const MediaExplorerPanel = ({ height }) => { const [currentTime, setCurrentTime] = React.useState(0); const [peaks, setPeaks] = React.useState(null); const [audioBuffer, setAudioBuffer] = React.useState(null); + const [audioDuration, setAudioDuration] = React.useState(0); const [midiNotes, setMidiNotes] = React.useState(null); const [midiTotal, setMidiTotal] = React.useState(4); const [midiBars, setMidiBars] = React.useState(1); @@ -9039,6 +9040,7 @@ const MediaExplorerPanel = ({ height }) => { const selectedRef = React.useRef(null); const peaksRef = React.useRef(null); const audioBufferRef = React.useRef(null); + const audioDurationRef = React.useRef(0); const midiNotesRef = React.useRef(null); const midiTotalRef = React.useRef(4); const midiBarsRef = React.useRef(1); @@ -9052,6 +9054,7 @@ const MediaExplorerPanel = ({ height }) => { selectedRef.current = selected; peaksRef.current = peaks; audioBufferRef.current = audioBuffer; + audioDurationRef.current = audioDuration; midiNotesRef.current = midiNotes; midiTotalRef.current = midiTotal; midiBarsRef.current = midiBars; @@ -9257,7 +9260,7 @@ const MediaExplorerPanel = ({ height }) => { } const sel = selectedRef.current; const matches = sel && ((f.path && f.path === sel.path) || (!f.path && (f.file_id || f.fileId) === (sel.file_id || sel.fileId))); - return f.duration || (audioBufferRef.current && matches ? audioBufferRef.current.duration : 0) || 0; + return f.duration || (matches && audioDurationRef.current ? audioDurationRef.current : 0) || (audioBufferRef.current && matches ? audioBufferRef.current.duration : 0) || 0; }; const folderFiles = React.useMemo(() => { @@ -9286,6 +9289,7 @@ const MediaExplorerPanel = ({ height }) => { const decoded = await ctx.decodeAudioData(buf); if (selectTokenRef.current !== token) return; setAudioBuffer(decoded); + setAudioDuration(decoded.duration); const data = decoded.getChannelData(0); const count = 600; const step = Math.max(1, Math.floor(data.length / count)); @@ -9309,6 +9313,7 @@ const MediaExplorerPanel = ({ height }) => { const data = await resp.json(); if (selectTokenRef.current !== token) return; setPeaks(data.peaks || []); + if (data.duration) setAudioDuration(data.duration); } catch (e) { setPeaks(null); } }; @@ -9629,6 +9634,7 @@ const MediaExplorerPanel = ({ height }) => { const decoded = await ctx.decodeAudioData(buf); if (selectTokenRef.current !== (token || selectTokenRef.current)) return; setAudioBuffer(decoded); + setAudioDuration(decoded.duration); const src = ctx.createBufferSource(); src.buffer = decoded; src.loop = isLooping; @@ -9761,11 +9767,12 @@ const MediaExplorerPanel = ({ height }) => { } const mid = h / 2; ctx.fillStyle = '#22c55e'; + const barW = Math.max(1, contentW / pk.length); for (let i = 0; i < pk.length; i++) { const x = (i / pk.length) * contentW - offset; if (x < -3 || x > w + 3) continue; const ph = Math.max(2, pk[i] * (h / 2 - 4)); - ctx.fillRect(x, mid - ph, Math.max(1, w / pk.length), ph * 2); + ctx.fillRect(x, mid - ph, barW, ph * 2); } const audioPlayheadX = contentW > w ? Math.min(w / 2, t * pxPerSec) : Math.min(w, t * pxPerSec); if (playing && dur > 0) { @@ -9805,6 +9812,7 @@ const MediaExplorerPanel = ({ height }) => { setCurrentTime(0); setPeaks(null); setAudioBuffer(null); + setAudioDuration(0); setMidiNotes(null); stopMediaPlayback(); if (f.kind === 'other') return; @@ -9944,6 +9952,14 @@ const MediaExplorerPanel = ({ height }) => { const icon = f.is_dir ? 'fa-folder text-[#d9a752]' : (isMidi ? 'fa-music text-purple-600' : (f.kind === 'audio' ? 'fa-file-audio text-emerald-600' : 'fa-file text-zinc-500')); return ( { + if (f.is_dir) { e.preventDefault(); return; } + e.dataTransfer.setData('text/plain', f.name || f.original_name || ''); + e.dataTransfer.effectAllowed = 'copy'; + window.__mediaExplorerDragFile = f; + }} + onDragEnd={() => { window.__mediaExplorerDragFile = null; }} className={`cursor-pointer hover:bg-blue-100 ${isSel ? 'file-row-selected' : ''}`} onClick={() => f.is_dir ? browseComputerDir(f) : handleSelect(f)} onDoubleClick={() => f.is_dir && browseComputerDir(f)}> @@ -16871,6 +16887,32 @@ const App = () => { window.parseMidiFile = parseMidiFile; // ── Load File on Track (with server upload) ── + // ── Resolve Media Explorer drag file → real File (for timeline drop) ── + const resolveMediaExplorerDropFile = async () => { + const mef = window.__mediaExplorerDragFile; + if (!mef) return null; + try { + if (mef.handle && typeof mef.handle.getFile === 'function') { + const f = await mef.handle.getFile(); + return new File([f], f.name || mef.name, { type: f.type || 'application/octet-stream' }); + } + if (mef.file_id || mef.fileId) { + const fid = mef.file_id || mef.fileId; + const resp = await fetch(`${API_BASE_URL}/api/v1/audio/download/${fid}`); + const blob = await resp.blob(); + return new File([blob], mef.name || mef.original_name || fid, { type: blob.type || 'audio/wav' }); + } + if (mef.path) { + const resp = await fetch(`${API_BASE_URL}/api/v1/media/file?path=${encodeURIComponent(mef.path)}`); + const blob = await resp.blob(); + return new File([blob], mef.name || mef.path.split(/[\\/]/).pop(), { type: blob.type || 'application/octet-stream' }); + } + } catch (e) { + showToast('Không thể nạp file từ Media Explorer: ' + e.message, 'error'); + } + return null; + }; + const loadFileOnTrack = async (trackId, file) => { if (!file) return; var fileName = file.name || ''; @@ -21609,8 +21651,20 @@ const App = () => { })), /*#__PURE__*/React.createElement("div", { className: "flex-1 flex flex-col divide-y divide-[#141414] relative bg-[#111111] min-h-full", onDragOver: e => e.preventDefault(), - onDrop: e => { + onDrop: async e => { e.preventDefault(); + // Media Explorer drag (client FS handle / server file_id / local path) + if (window.__mediaExplorerDragFile) { + const f = await resolveMediaExplorerDropFile(); + window.__mediaExplorerDragFile = null; + if (!f) return; + if (/\.mid$|\.midi$/i.test(f.name || '')) { + handleDropMidiToNewTracks(f); + } else if (selectedTrackId) { + loadFileOnTrack(selectedTrackId, f); + } + return; + } const f = e.dataTransfer.files && e.dataTransfer.files[0]; if (!f) return; if (/\.mid$|\.midi$/i.test(f.name || '')) { @@ -21641,9 +21695,16 @@ const App = () => { }, className: `shrink-0 relative border-b border-[#141414] hover:bg-zinc-850/5 transition-colors ${isSelected ? 'bg-zinc-800/10' : ''}`, onDragOver: e => e.preventDefault(), - onDrop: e => { + onDrop: async e => { e.preventDefault(); e.stopPropagation(); + // Media Explorer drag (client FS handle / server file_id / local path) + if (window.__mediaExplorerDragFile) { + const f = await resolveMediaExplorerDropFile(); + window.__mediaExplorerDragFile = null; + if (f) loadFileOnTrack(track.id, f); + return; + } const f = e.dataTransfer.files && e.dataTransfer.files[0]; if (!f) return; loadFileOnTrack(track.id, f); diff --git a/app/static/js/app.precompiled.js b/app/static/js/app.precompiled.js index 0b02de4..ecbbf99 100644 --- a/app/static/js/app.precompiled.js +++ b/app/static/js/app.precompiled.js @@ -232,15 +232,15 @@ for(let 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text-[10px] border border-slate-700"},"Dither"))))));};// ── Media Explorer Panel (from md/51_MEDIA_EXPLORER.md) ── -const MEDIA_LIBRARY_SAMPLES=[{name:"MIDI_Loop_01.mid",events:95,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_02_Bass.mid",events:48,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_03_Lead.mid",events:110,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_04.mid",events:76,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_05_Bass.mid",events:52,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_06.mid",events:88,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"}];const MediaExplorerPanel=({height})=>{const[userFiles,setUserFiles]=React.useState([]);const[folder,setFolder]=React.useState('library');const[selected,setSelected]=React.useState(null);const[filterText,setFilterText]=React.useState('');const[viewMode,setViewMode]=React.useState('details');const[isPlaying,setIsPlaying]=React.useState(false);const[isPaused,setIsPaused]=React.useState(false);const[isLooping,setIsLooping]=React.useState(false);const[autoPlay,setAutoPlay]=React.useState(true);const[pitch,setPitch]=React.useState(0.0);const[rate,setRate]=React.useState(1.0);const[volumeDb,setVolumeDb]=React.useState(0.0);const[currentTime,setCurrentTime]=React.useState(0);const[peaks,setPeaks]=React.useState(null);const[audioBuffer,setAudioBuffer]=React.useState(null);const[midiNotes,setMidiNotes]=React.useState(null);const[midiTotal,setMidiTotal]=React.useState(4);const[midiBars,setMidiBars]=React.useState(1);const[midiTotalBeats,setMidiTotalBeats]=React.useState(16);const[midiFileBpm,setMidiFileBpm]=React.useState(120);const[tempo,setTempo]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tempo');return saved?parseInt(saved):120;}());// Refs mirror latest state so drawCanvas (also called from rAF clock with a +const MEDIA_LIBRARY_SAMPLES=[{name:"MIDI_Loop_01.mid",events:95,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_02_Bass.mid",events:48,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_03_Lead.mid",events:110,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_04.mid",events:76,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_05_Bass.mid",events:52,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"},{name:"MIDI_Loop_06.mid",events:88,lengthQn:16,time:"0:08.000",tpqn:480,bpm:130,kind:"midi"}];const MediaExplorerPanel=({height})=>{const[userFiles,setUserFiles]=React.useState([]);const[folder,setFolder]=React.useState('library');const[selected,setSelected]=React.useState(null);const[filterText,setFilterText]=React.useState('');const[viewMode,setViewMode]=React.useState('details');const[isPlaying,setIsPlaying]=React.useState(false);const[isPaused,setIsPaused]=React.useState(false);const[isLooping,setIsLooping]=React.useState(false);const[autoPlay,setAutoPlay]=React.useState(true);const[pitch,setPitch]=React.useState(0.0);const[rate,setRate]=React.useState(1.0);const[volumeDb,setVolumeDb]=React.useState(0.0);const[currentTime,setCurrentTime]=React.useState(0);const[peaks,setPeaks]=React.useState(null);const[audioBuffer,setAudioBuffer]=React.useState(null);const[audioDuration,setAudioDuration]=React.useState(0);const[midiNotes,setMidiNotes]=React.useState(null);const[midiTotal,setMidiTotal]=React.useState(4);const[midiBars,setMidiBars]=React.useState(1);const[midiTotalBeats,setMidiTotalBeats]=React.useState(16);const[midiFileBpm,setMidiFileBpm]=React.useState(120);const[tempo,setTempo]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tempo');return saved?parseInt(saved):120;}());// Refs mirror latest state so drawCanvas (also called from rAF clock with a // stale closure) always draws the currently selected file, not the old one. -const selectedRef=React.useRef(null);const peaksRef=React.useRef(null);const audioBufferRef=React.useRef(null);const midiNotesRef=React.useRef(null);const midiTotalRef=React.useRef(4);const midiBarsRef=React.useRef(1);const midiTotalBeatsRef=React.useRef(16);const midiFileBpmRef=React.useRef(120);const isPlayingRef=React.useRef(false);const isPausedRef=React.useRef(false);const folderRef=React.useRef('library');const tempoRef=React.useRef(120);const currentTimeRef=React.useRef(0);selectedRef.current=selected;peaksRef.current=peaks;audioBufferRef.current=audioBuffer;midiNotesRef.current=midiNotes;midiTotalRef.current=midiTotal;midiBarsRef.current=midiBars;midiTotalBeatsRef.current=midiTotalBeats;midiFileBpmRef.current=midiFileBpm;isPlayingRef.current=isPlaying;isPausedRef.current=isPaused;folderRef.current=folder;tempoRef.current=tempo;currentTimeRef.current=currentTime;const[computerRoots,setComputerRoots]=React.useState(null);const[computerTree,setComputerTree]=React.useState({});const[computerPath,setComputerPath]=React.useState(null);const[computerFiles,setComputerFiles]=React.useState([]);const[computerMode,setComputerMode]=React.useState('server');const[clientRoot,setClientRoot]=React.useState(null);const[synthInst,setSynthInst]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_synth');return saved?JSON.parse(saved):null;}());const[synthOpen,setSynthOpen]=React.useState(false);const[synthList,setSynthList]=React.useState(null);const[synthLoading,setSynthLoading]=React.useState(false);const synthListRef=React.useRef(null);synthListRef.current=synthList;const synthInstRef=React.useRef(null);synthInstRef.current=synthInst;const[treeWidth,setTreeWidth]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tree_width');return saved?parseInt(saved):176;}());const treeWidthRef=React.useRef(176);treeWidthRef.current=treeWidth;const startTreeResize=e=>{e.preventDefault();const startX=e.clientX;const startW=treeWidthRef.current;const onMove=ev=>{const newW=Math.max(110,Math.min(420,startW+(ev.clientX-startX)));treeWidthRef.current=newW;setTreeWidth(newW);};const onUp=()=>{document.removeEventListener('mousemove',onMove);document.removeEventListener('mouseup',onUp);localStorage.setItem('studio_media_explorer_tree_width',treeWidthRef.current.toString());};document.addEventListener('mousemove',onMove);document.addEventListener('mouseup',onUp);};const canvasRef=React.useRef(null);const playStateRef=React.useRef(null);const rafRef=React.useRef(null);const loopTimerRef=React.useRef(null);const selectTokenRef=React.useRef(0);React.useEffect(()=>{if(window.SonicAPI&&window.SonicAPI.listMyFiles){window.SonicAPI.listMyFiles([]).then(data=>setUserFiles(data||[])).catch(()=>{});}return()=>{stopMediaPlayback();};// eslint-disable-next-line react-hooks/exhaustive-deps +const selectedRef=React.useRef(null);const peaksRef=React.useRef(null);const audioBufferRef=React.useRef(null);const audioDurationRef=React.useRef(0);const midiNotesRef=React.useRef(null);const midiTotalRef=React.useRef(4);const midiBarsRef=React.useRef(1);const midiTotalBeatsRef=React.useRef(16);const midiFileBpmRef=React.useRef(120);const isPlayingRef=React.useRef(false);const isPausedRef=React.useRef(false);const folderRef=React.useRef('library');const tempoRef=React.useRef(120);const currentTimeRef=React.useRef(0);selectedRef.current=selected;peaksRef.current=peaks;audioBufferRef.current=audioBuffer;audioDurationRef.current=audioDuration;midiNotesRef.current=midiNotes;midiTotalRef.current=midiTotal;midiBarsRef.current=midiBars;midiTotalBeatsRef.current=midiTotalBeats;midiFileBpmRef.current=midiFileBpm;isPlayingRef.current=isPlaying;isPausedRef.current=isPaused;folderRef.current=folder;tempoRef.current=tempo;currentTimeRef.current=currentTime;const[computerRoots,setComputerRoots]=React.useState(null);const[computerTree,setComputerTree]=React.useState({});const[computerPath,setComputerPath]=React.useState(null);const[computerFiles,setComputerFiles]=React.useState([]);const[computerMode,setComputerMode]=React.useState('server');const[clientRoot,setClientRoot]=React.useState(null);const[synthInst,setSynthInst]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_synth');return saved?JSON.parse(saved):null;}());const[synthOpen,setSynthOpen]=React.useState(false);const[synthList,setSynthList]=React.useState(null);const[synthLoading,setSynthLoading]=React.useState(false);const synthListRef=React.useRef(null);synthListRef.current=synthList;const synthInstRef=React.useRef(null);synthInstRef.current=synthInst;const[treeWidth,setTreeWidth]=React.useState(function(){var saved=localStorage.getItem('studio_media_explorer_tree_width');return saved?parseInt(saved):176;}());const treeWidthRef=React.useRef(176);treeWidthRef.current=treeWidth;const startTreeResize=e=>{e.preventDefault();const startX=e.clientX;const startW=treeWidthRef.current;const onMove=ev=>{const newW=Math.max(110,Math.min(420,startW+(ev.clientX-startX)));treeWidthRef.current=newW;setTreeWidth(newW);};const onUp=()=>{document.removeEventListener('mousemove',onMove);document.removeEventListener('mouseup',onUp);localStorage.setItem('studio_media_explorer_tree_width',treeWidthRef.current.toString());};document.addEventListener('mousemove',onMove);document.addEventListener('mouseup',onUp);};const canvasRef=React.useRef(null);const playStateRef=React.useRef(null);const rafRef=React.useRef(null);const loopTimerRef=React.useRef(null);const selectTokenRef=React.useRef(0);React.useEffect(()=>{if(window.SonicAPI&&window.SonicAPI.listMyFiles){window.SonicAPI.listMyFiles([]).then(data=>setUserFiles(data||[])).catch(()=>{});}return()=>{stopMediaPlayback();};// eslint-disable-next-line react-hooks/exhaustive-deps },[]);// ── Session persistence: keep loaded folder/files/tree across panel toggles & reloads ── const SESSION_KEY='studio_media_explorer_session_v1';const saveClientRootHandle=()=>{if(!clientRoot||!window.indexedDB)return;try{const req=indexedDB.open('sonicforge_media_explorer',1);req.onupgradeneeded=e=>{const db=e.target.result;if(!db.objectStoreNames.contains('root_handle'))db.createObjectStore('root_handle');};req.onsuccess=()=>{const db=req.result;const tx=db.transaction('root_handle','readwrite');tx.objectStore('root_handle').put(clientRoot,'client_root');};}catch(e){}};const loadClientRootHandle=()=>{return new Promise(resolve=>{if(!window.indexedDB){resolve(null);return;}try{const req=indexedDB.open('sonicforge_media_explorer',1);req.onupgradeneeded=e=>{const db=e.target.result;if(!db.objectStoreNames.contains('root_handle'))db.createObjectStore('root_handle');};req.onsuccess=()=>{const db=req.result;try{const tx=db.transaction('root_handle','readonly');const g=tx.objectStore('root_handle').get('client_root');g.onsuccess=()=>resolve(g.result||null);g.onerror=()=>resolve(null);}catch(e2){resolve(null);}};req.onerror=()=>resolve(null);}catch(e){resolve(null);}});};const saveSession=React.useCallback(()=>{try{const stripHandle=o=>{if(Array.isArray(o))return o.map(stripHandle);if(o&&typeof o==='object'){const out={};for(const k of Object.keys(o)){if(k==='handle')continue;out[k]=stripHandle(o[k]);}return out;}return o;};const treeSnapshot={};Object.keys(computerTree).forEach(path=>{const node=computerTree[path];treeSnapshot[path]={dirs:stripHandle(node?node.dirs:[]),expanded:!!(node&&node.expanded)};});const snap={folder,computerMode,computerPath,clientRootName:clientRoot?clientRoot.name:null,computerRoots:stripHandle(computerRoots||[]),computerTree:treeSnapshot,computerFiles:stripHandle(computerFiles||[]),selected:selected?stripHandle({name:selected.name,path:selected.path,kind:selected.kind,is_dir:selected.is_dir,size_mb:selected.size_mb}):null,savedAt:Date.now()};localStorage.setItem(SESSION_KEY,JSON.stringify(snap));}catch(e){}},[folder,computerMode,computerPath,clientRoot,computerRoots,computerTree,computerFiles,selected]);React.useEffect(()=>{saveSession();if(computerMode==='client'&&clientRoot&&clientRoot.kind==='directory')saveClientRootHandle();},[saveSession,computerMode,clientRoot]);const restoreSession=React.useCallback(()=>{try{const raw=localStorage.getItem(SESSION_KEY);if(!raw)return;const snap=JSON.parse(raw);if(snap.folder)setFolder(snap.folder);if(snap.computerMode)setComputerMode(snap.computerMode);if(snap.clientRootName)setClientRoot({name:snap.clientRootName});if(snap.computerRoots&&snap.computerRoots.length)setComputerRoots(snap.computerRoots);if(snap.computerPath)setComputerPath(snap.computerPath);if(snap.computerFiles)setComputerFiles(snap.computerFiles);if(snap.selected)setSelected(snap.selected);if(snap.computerTree){const tree={};Object.keys(snap.computerTree).forEach(path=>{tree[path]={dirs:snap.computerTree[path].dirs||[],expanded:snap.computerTree[path].expanded};});setComputerTree(tree);}}catch(e){}},[]);React.useEffect(()=>{(async()=>{await restoreSession();// Restore the FileSystemDirectoryHandle so client-mode browsing still works const savedHandle=await loadClientRootHandle();if(savedHandle&&savedHandle.kind==='directory'){setClientRoot(savedHandle);const restoredPath=(()=>{try{return JSON.parse(localStorage.getItem(SESSION_KEY)||'{}').computerPath;}catch(e){return null;}})();if(restoredPath){setComputerRoots([{name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle}]);// Re-browse current dir to re-attach real handles (metadata-only tree from localStorage) const storedTree=(()=>{try{return JSON.parse(localStorage.getItem(SESSION_KEY)||'{}').computerTree;}catch(e){return null;}})();if(storedTree){const rebuilt={};Object.keys(storedTree).forEach(p=>{rebuilt[p]={dirs:storedTree[p].dirs||[],expanded:storedTree[p].expanded};});setComputerTree(rebuilt);}setComputerMode('client');// Rebuild handles for the current folder + ancestors by walking from root browseComputerDir({name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle});}}})();// eslint-disable-next-line react-hooks/exhaustive-deps -},[]);const isMidiFile=f=>f&&(f.kind==='midi'||/\.(mid|midi)$/i.test(f.name||f.original_name||''));const fileDuration=f=>{if(!f)return 0;if(isMidiFile(f)){if(midiTotalRef.current&&midiNotesRef.current&&midiNotesRef.current.length)return midiTotalRef.current;return(f.lengthQn||16)*60/(f.bpm||tempoRef.current||120);}const sel=selectedRef.current;const matches=sel&&(f.path&&f.path===sel.path||!f.path&&(f.file_id||f.fileId)===(sel.file_id||sel.fileId));return f.duration||(audioBufferRef.current&&matches?audioBufferRef.current.duration:0)||0;};const folderFiles=React.useMemo(()=>{if(folder==='library')return MEDIA_LIBRARY_SAMPLES;if(folder==='computer'){const node=computerTree[computerPath]||{dirs:[]};return[...(node.dirs||[]),...computerFiles];}return userFiles.filter(f=>folder==='uploads'?(f.type||'Upload')==='Upload':(f.type||'Processed')==='Processed');},[folder,userFiles,computerFiles,computerTree,computerPath]);const visibleFiles=React.useMemo(()=>{const q=filterText.toLowerCase().trim();if(!q)return folderFiles;return folderFiles.filter(f=>(f.name||f.original_name||'').toLowerCase().includes(q));},[folderFiles,filterText]);const loadWaveform=async f=>{const token=selectTokenRef.current;if(f&&(f.handle||f.path)){try{const buf=await readLocalFileBuffer(f);if(selectTokenRef.current!==token)return;if(!buf){setPeaks(null);return;}const ctx=getAudioContext();const decoded=await ctx.decodeAudioData(buf);if(selectTokenRef.current!==token)return;setAudioBuffer(decoded);const data=decoded.getChannelData(0);const count=600;const step=Math.max(1,Math.floor(data.length/count));const pk=[];for(let i=0;im)m=v;}pk.push(m);}setPeaks(pk);}catch(e){if(selectTokenRef.current===token)setPeaks(null);}return;}const fid=f.file_id||f.fileId;if(!fid){setPeaks(null);return;}try{const resp=await fetch(`${API_BASE_URL}/api/v1/audio/waveform/${fid}?num_peaks=600`);const data=await resp.json();if(selectTokenRef.current!==token)return;setPeaks(data.peaks||[]);}catch(e){setPeaks(null);}};const openMyComputer=async()=>{setFolder('computer');// Restore last opened folder from session (click My Computer → show folder content directly) +},[]);const isMidiFile=f=>f&&(f.kind==='midi'||/\.(mid|midi)$/i.test(f.name||f.original_name||''));const fileDuration=f=>{if(!f)return 0;if(isMidiFile(f)){if(midiTotalRef.current&&midiNotesRef.current&&midiNotesRef.current.length)return midiTotalRef.current;return(f.lengthQn||16)*60/(f.bpm||tempoRef.current||120);}const sel=selectedRef.current;const matches=sel&&(f.path&&f.path===sel.path||!f.path&&(f.file_id||f.fileId)===(sel.file_id||sel.fileId));return f.duration||(matches&&audioDurationRef.current?audioDurationRef.current:0)||(audioBufferRef.current&&matches?audioBufferRef.current.duration:0)||0;};const folderFiles=React.useMemo(()=>{if(folder==='library')return MEDIA_LIBRARY_SAMPLES;if(folder==='computer'){const node=computerTree[computerPath]||{dirs:[]};return[...(node.dirs||[]),...computerFiles];}return userFiles.filter(f=>folder==='uploads'?(f.type||'Upload')==='Upload':(f.type||'Processed')==='Processed');},[folder,userFiles,computerFiles,computerTree,computerPath]);const visibleFiles=React.useMemo(()=>{const q=filterText.toLowerCase().trim();if(!q)return folderFiles;return folderFiles.filter(f=>(f.name||f.original_name||'').toLowerCase().includes(q));},[folderFiles,filterText]);const loadWaveform=async f=>{const token=selectTokenRef.current;if(f&&(f.handle||f.path)){try{const buf=await readLocalFileBuffer(f);if(selectTokenRef.current!==token)return;if(!buf){setPeaks(null);return;}const ctx=getAudioContext();const decoded=await ctx.decodeAudioData(buf);if(selectTokenRef.current!==token)return;setAudioBuffer(decoded);setAudioDuration(decoded.duration);const data=decoded.getChannelData(0);const count=600;const step=Math.max(1,Math.floor(data.length/count));const pk=[];for(let i=0;im)m=v;}pk.push(m);}setPeaks(pk);}catch(e){if(selectTokenRef.current===token)setPeaks(null);}return;}const fid=f.file_id||f.fileId;if(!fid){setPeaks(null);return;}try{const resp=await fetch(`${API_BASE_URL}/api/v1/audio/waveform/${fid}?num_peaks=600`);const data=await resp.json();if(selectTokenRef.current!==token)return;setPeaks(data.peaks||[]);if(data.duration)setAudioDuration(data.duration);}catch(e){setPeaks(null);}};const openMyComputer=async()=>{setFolder('computer');// Restore last opened folder from session (click My Computer → show folder content directly) try{const raw=localStorage.getItem(SESSION_KEY);if(raw){const snap=JSON.parse(raw);if(snap&&snap.computerPath&&snap.computerFiles){setComputerPath(snap.computerPath);setComputerFiles(snap.computerFiles);setComputerMode(snap.computerMode||'server');if(snap.computerTree){const tree={};Object.keys(snap.computerTree).forEach(p=>{tree[p]={dirs:snap.computerTree[p].dirs||[],expanded:snap.computerTree[p].expanded};});setComputerTree(tree);}if(snap.computerRoots&&snap.computerRoots.length)setComputerRoots(snap.computerRoots);if(snap.selected)setSelected(snap.selected);// For client mode, re-attach real handles by walking from the stored root handle if(snap.computerMode==='client'){const savedHandle=await loadClientRootHandle();if(savedHandle&&savedHandle.kind==='directory'){setClientRoot(savedHandle);setComputerRoots([{name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle}]);setComputerMode('client');browseComputerDir({name:savedHandle.name,path:'root',is_dir:true,handle:savedHandle});}}return;}}}catch(e){}if(window.showDirectoryPicker){try{const handle=await window.showDirectoryPicker({mode:'read'});setComputerMode('client');setClientRoot(handle);const rootEntry={name:handle.name,path:'root',is_dir:true,handle};setComputerRoots([rootEntry]);setComputerPath('root');setComputerFiles([]);setComputerTree({root:{handle,parent:null,dirs:[],expanded:true}});await browseComputerDir(rootEntry);return;}catch(e){if(e&&e.name==='AbortError')return;window.showToast&&window.showToast('Không thể mở thư mục: '+e.message,'error');return;}}// Fallback: server API (trình duyệt không hỗ trợ File System Access API) setComputerMode('server');if(computerRoots)return;setComputerRoots(null);try{const resp=await fetch(`${API_BASE_URL}/api/v1/media/computer`);if(!resp.ok)throw new Error('HTTP '+resp.status);const data=await resp.json();const roots=data.roots||[];setComputerRoots(roots.length?roots:[{path:'/',name:'Root (/)',is_dir:true}]);if(!roots.length)window.showToast&&window.showToast('Không tìm thấy ổ đĩa nào','warning');}catch(e){setComputerRoots([{path:'/',name:'Root (/)',is_dir:true}]);window.showToast&&window.showToast('Không thể truy cập My Computer: '+e.message,'error');}};const browseClientDir=async entry=>{const handle=entry&&entry.handle;if(!handle||!handle.entries)return;const dirs=[];const files=[];const parentPath=entry.path;try{for await(const[name,h]of handle.entries()){if(name.startsWith('.'))continue;if(h.kind==='directory'){dirs.push({name,path:parentPath+'/'+name,is_dir:true,handle:h});}else{const ext=(name.split('.').pop()||'').toLowerCase();const kind=ext==='mid'||ext==='midi'?'midi':['wav','mp3','ogg','flac','aiff','aif','m4a','aac','opus'].includes(ext)?'audio':'other';let size=0;try{const f=await h.getFile();size=f.size;}catch(e2){}files.push({name,path:parentPath+'/'+name,is_dir:false,size_mb:size?+(size/1048576).toFixed(2):0,ext:'.'+ext,kind,handle:h});}}dirs.sort((a,b)=>a.name.localeCompare(b.name));files.sort((a,b)=>a.name.localeCompare(b.name));setComputerPath(parentPath);setComputerFiles(files);setSelected(null);setCurrentTime(0);stopMediaPlayback();setComputerTree(prev=>({...prev,[parentPath]:{handle,parent:entry.parent||null,dirs,expanded:true}}));}catch(e){window.showToast&&window.showToast('Không thể đọc thư mục: '+e.message,'error');}};const browseComputerDir=async entry=>{if(!entry)return;if(computerMode==='client'||entry.handle){if(entry.handle&&entry.handle.entries){const parentInfo=computerTree[entry.path];await browseClientDir({...entry,parent:parentInfo?parentInfo.parent:null});return;}}const path=entry.path||entry;if(!path)return;try{const resp=await fetch(`${API_BASE_URL}/api/v1/media/browse?path=${encodeURIComponent(path)}`);if(!resp.ok)throw new Error('HTTP '+resp.status);const data=await resp.json();setComputerPath(data.path);setComputerFiles(data.files||[]);setSelected(null);setCurrentTime(0);stopMediaPlayback();setComputerTree(prev=>({...prev,[path]:{dirs:data.dirs||[],expanded:true}}));}catch(e){window.showToast&&window.showToast('Không thể mở thư mục: '+e.message,'error');}};const toggleComputerDir=async entry=>{if(!entry)return;const path=entry.path||entry;const node=computerTree[path];if(node&&node.expanded){setComputerTree(prev=>({...prev,[path]:{...prev[path],expanded:false}}));}else{await browseComputerDir(entry);}};const goComputerParent=()=>{if(!computerPath)return;if(computerMode==='client'||clientRoot){const node=computerTree[computerPath];const parentHandle=node&&node.parent;if(parentHandle){const parentEntry=computerRoots&&computerRoots[0]&&parentHandle===clientRoot?computerRoots[0]:{name:parentHandle.name,path:computerPath.split('/').slice(0,-1).join('/')||'root',is_dir:true,handle:parentHandle};browseComputerDir({...parentEntry,parent:parentHandle===clientRoot?null:computerTree[parentEntry.path]?computerTree[parentEntry.path].parent:null});}return;}const isUnix=computerPath.startsWith('/');const parts=computerPath.split(/[\\/]/).filter(Boolean);parts.pop();if(isUnix){browseComputerDir(parts.length?'/'+parts.join('/'):'/');}else{// Windows: quay về root ổ đĩa nếu đã lên tới đỉnh @@ -251,14 +251,14 @@ if(!f||!window.SonicSF)return;try{const buf=await readLocalFileBuffer(f);if(!buf if(selectTokenRef.current!==(token||selectTokenRef.current))return;const prog=curInst&&curInst.program!==undefined?curInst.program:undefined;const eng=curInst?{soundfont_id:sfId,soundfont_bank:bank,soundfont_program:prog!==undefined?prog:0}:undefined;const totalSec=midiResult[0].duration||4;const allNotes=[];midiResult.forEach(track=>{(track.notes||[]).forEach(note=>{allNotes.push(Object.assign({},note,{trackOffset:track.startTime||0}));});});const schedulePass=passStartTime=>{allNotes.forEach(note=>{const startSec=(note.start_beat||0)*secondsPerBeat+(note.trackOffset||0);const durMs=Math.max(80,(note.duration_beats||1)*secondsPerBeat*1000);window.SonicSF.playNote(note.pitch||60,note.velocity||0.8,durMs,passStartTime+startSec,prog,null,0,eng);});};schedulePass(startWallTime);// Loop scheduling if(loopTimerRef.current){clearInterval(loopTimerRef.current);loopTimerRef.current=null;}if(isLooping){loopTimerRef.current=setInterval(()=>{if(selectTokenRef.current!==(token||selectTokenRef.current)){clearInterval(loopTimerRef.current);loopTimerRef.current=null;return;}if(!isPlayingRef.current||isPausedRef.current)return;const passStart=ctx.currentTime+0.05;schedulePass(passStart);playStateRef.current=Object.assign({},playStateRef.current,{startedAt:passStart,fakeStart:passStart});},Math.max(200,totalSec*1000));}// Keep a fake clock so canvas playhead animates; loop uses playStateRef playStateRef.current={source:null,ctx,startedAt:startWallTime,fakeStart:startWallTime,midiTotal:totalSec};setMidiNotes(allNotes);setMidiTotal(totalSec);setMidiBars(midiResult[0].bars||1);setMidiTotalBeats(midiResult[0].totalBeats||16);setMidiFileBpm(midiResult[0].bpm||120);setIsPlaying(true);setIsPaused(false);startCanvasClock();}catch(e){console.error('MIDI preview failed',e);}};const stopMediaPlayback=React.useCallback(()=>{if(playStateRef.current){try{if(playStateRef.current.source)playStateRef.current.source.stop();}catch(e){}try{if(playStateRef.current.source)playStateRef.current.source.disconnect();}catch(e){}playStateRef.current=null;}if(rafRef.current)cancelAnimationFrame(rafRef.current);rafRef.current=null;if(loopTimerRef.current){clearInterval(loopTimerRef.current);loopTimerRef.current=null;}if(window.SonicSF&&typeof window.SonicSF.stopAll==='function'){try{window.SonicSF.stopAll();}catch(e){}}setIsPlaying(false);setIsPaused(false);},[]);const playSelected=async(f,token)=>{if(!f)return;stopMediaPlayback();if(isMidiFile(f)){if(f.handle||f.path||f.file_id||f.fileId){// Real MIDI file: play through selected synth instrument -await playMidiPreview(f,token);return;}playStateRef.current={source:null,ctx:null,fakeStart:performance.now()/1000};setIsPlaying(true);setIsPaused(false);startCanvasClock();return;}const fid=f.file_id||f.fileId;const buf=await readLocalFileBuffer(f);if(selectTokenRef.current!==(token||selectTokenRef.current))return;if(!buf)return;try{const ctx=getAudioContext();const decoded=await ctx.decodeAudioData(buf);if(selectTokenRef.current!==(token||selectTokenRef.current))return;setAudioBuffer(decoded);const src=ctx.createBufferSource();src.buffer=decoded;src.loop=isLooping;src.playbackRate.value=rate;const gain=ctx.createGain();const linear=volumeDb<=-50?0:Math.pow(10,volumeDb/20);gain.gain.value=linear;src.connect(gain);gain.connect(ctx.destination);src.start();const startedAt=ctx.currentTime;playStateRef.current={source:src,ctx,startedAt};setIsPlaying(true);setIsPaused(false);startCanvasClock();}catch(e){console.error('Preview failed',e);}};const togglePause=()=>{const st=playStateRef.current;if(!st)return;if(isPaused){if(st.ctx)st.ctx.resume();setIsPaused(false);}else{if(st.ctx)st.ctx.suspend();setIsPaused(true);}};const startCanvasClock=()=>{if(rafRef.current)cancelAnimationFrame(rafRef.current);const tick=()=>{rafRef.current=requestAnimationFrame(tick);let t=currentTimeRef.current;const st=playStateRef.current;if(st&&!isPausedRef.current){t=st.ctx?st.ctx.currentTime-st.startedAt:performance.now()/1000-st.fakeStart;}setCurrentTime(t);currentTimeRef.current=t;drawCanvas(t);};tick();};const drawCanvas=t=>{const canvas=canvasRef.current;if(!canvas)return;const ctx=canvas.getContext('2d');const w=canvas.clientWidth,h=canvas.clientHeight;if(!w||!h)return;canvas.width=w*2;canvas.height=h*2;ctx.scale(2,2);ctx.clearRect(0,0,w,h);ctx.fillStyle='#181818';ctx.fillRect(0,0,w,h);// Read from refs so the rAF clock's stale closure still draws the latest file +await playMidiPreview(f,token);return;}playStateRef.current={source:null,ctx:null,fakeStart:performance.now()/1000};setIsPlaying(true);setIsPaused(false);startCanvasClock();return;}const fid=f.file_id||f.fileId;const buf=await readLocalFileBuffer(f);if(selectTokenRef.current!==(token||selectTokenRef.current))return;if(!buf)return;try{const ctx=getAudioContext();const decoded=await ctx.decodeAudioData(buf);if(selectTokenRef.current!==(token||selectTokenRef.current))return;setAudioBuffer(decoded);setAudioDuration(decoded.duration);const src=ctx.createBufferSource();src.buffer=decoded;src.loop=isLooping;src.playbackRate.value=rate;const gain=ctx.createGain();const linear=volumeDb<=-50?0:Math.pow(10,volumeDb/20);gain.gain.value=linear;src.connect(gain);gain.connect(ctx.destination);src.start();const startedAt=ctx.currentTime;playStateRef.current={source:src,ctx,startedAt};setIsPlaying(true);setIsPaused(false);startCanvasClock();}catch(e){console.error('Preview failed',e);}};const togglePause=()=>{const st=playStateRef.current;if(!st)return;if(isPaused){if(st.ctx)st.ctx.resume();setIsPaused(false);}else{if(st.ctx)st.ctx.suspend();setIsPaused(true);}};const startCanvasClock=()=>{if(rafRef.current)cancelAnimationFrame(rafRef.current);const tick=()=>{rafRef.current=requestAnimationFrame(tick);let t=currentTimeRef.current;const st=playStateRef.current;if(st&&!isPausedRef.current){t=st.ctx?st.ctx.currentTime-st.startedAt:performance.now()/1000-st.fakeStart;}setCurrentTime(t);currentTimeRef.current=t;drawCanvas(t);};tick();};const drawCanvas=t=>{const canvas=canvasRef.current;if(!canvas)return;const ctx=canvas.getContext('2d');const w=canvas.clientWidth,h=canvas.clientHeight;if(!w||!h)return;canvas.width=w*2;canvas.height=h*2;ctx.scale(2,2);ctx.clearRect(0,0,w,h);ctx.fillStyle='#181818';ctx.fillRect(0,0,w,h);// Read from refs so the rAF clock's stale closure still draws the latest file const f=selectedRef.current;const curPeaks=peaksRef.current;const curAudioBuffer=audioBufferRef.current;const curMidiNotes=midiNotesRef.current;const curMidiTotal=midiTotalRef.current;const curMidiBars=midiBarsRef.current;const curMidiTotalBeats=midiTotalBeatsRef.current;const curTempo=tempoRef.current;const playing=isPlayingRef.current;if(!f){ctx.fillStyle='#555';ctx.font='12px JetBrains Mono, monospace';ctx.fillText('No file selected',10,h/2);return;}const dur=fileDuration(f);if(isMidiFile(f)){ctx.strokeStyle='#333';for(let y=0;y0?curMidiTotalBeats:Math.max(curMidiTotal*bpmV/60,4);const beats=Math.max(totalBeats,4);const contentW=Math.max(w,beats*pxPerBeat);const pxPerSec=pxPerBeat*bpmV/60;let offset=0;if(playing&&contentW>w&&dur>0){offset=Math.max(0,Math.min(contentW-w,t*pxPerSec-w/2));}// bar lines (every 4 beats) + beat labels for(let b=0;b<=beats;b+=4){const x=b*pxPerBeat-offset;if(x<-10||x>w+10)continue;ctx.beginPath();ctx.moveTo(x,0);ctx.lineTo(x,h-14);ctx.stroke();}ctx.fillStyle='#9ca3af';if(curMidiNotes&&curMidiNotes.length){// Real piano-roll: rows = pitches (48..84), columns = beats const pitchMin=48,pitchMax=84;const pitchRange=Math.max(1,pitchMax-pitchMin);curMidiNotes.forEach(n=>{const x=n.start_beat*pxPerBeat-offset;if(x<-30||x>w+30)return;const nw=Math.max(3,(n.duration_beats||1)*pxPerBeat);const y=h-14-8-(Math.min(pitchMax,Math.max(pitchMin,n.pitch))-pitchMin)/pitchRange*(h-30);ctx.fillRect(x,y,nw,5);});}else{const events=f.events||76;for(let i=0;iw?Math.min(w/2,t*pxPerSec):Math.min(w,t*pxPerSec);if(playing&&dur>0){ctx.fillStyle='#ef4444';ctx.fillRect(midiPlayheadX-1,0,2,h-14);}}else{const pk=curPeaks&&curPeaks.length>0?curPeaks:null;if(pk){const pxPerSec=50;const contentW=Math.max(w,dur*pxPerSec);let offset=0;if(playing&&contentW>w&&dur>0){offset=Math.max(0,Math.min(contentW-w,t*pxPerSec-w/2));}const mid=h/2;ctx.fillStyle='#22c55e';for(let i=0;iw+3)continue;const ph=Math.max(2,pk[i]*(h/2-4));ctx.fillRect(x,mid-ph,Math.max(1,w/pk.length),ph*2);}const audioPlayheadX=contentW>w?Math.min(w/2,t*pxPerSec):Math.min(w,t*pxPerSec);if(playing&&dur>0){ctx.fillStyle='#ef4444';ctx.fillRect(audioPlayheadX-1,0,2,h-14);}}else{ctx.fillStyle='#666';ctx.font='11px monospace';ctx.fillText('Waveform unavailable',10,h/2);}}// ruler 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",Math.round(midiTotalBeats||16)),/*#__PURE__*/React.createElement("div",null,"BPM: ",midiFileBpm||120),/*#__PURE__*/React.createElement("div",null,"Duration: ",selDur.toFixed(2),"s")):/*#__PURE__*/React.createElement(React.Fragment,null,/*#__PURE__*/React.createElement("div",null,"Duration: ",selDur.toFixed(2),"s"),/*#__PURE__*/React.createElement("div",null,"Sample Rate: 44100 Hz"),/*#__PURE__*/React.createElement("div",null,"Type: ",selected.path?selected.kind==='other'?'Local File':'Local Audio':selected.type||'Audio'))):/*#__PURE__*/React.createElement("div",null,"No file selected"))),/*#__PURE__*/React.createElement("div",{className:"h-5 bg-[#c0c0c0] border-t border-white flex items-center justify-between text-[11px] font-mono px-1 shrink-0"},/*#__PURE__*/React.createElement("div",{className:"flex items-center gap-3"},selIsMidi&&midiNotes&&midiNotes.length?/*#__PURE__*/React.createElement("div",{className:"bg-white border border-[#808080] px-1.5 text-slate-900 font-bold"},"Bar ",Math.max(1,Math.floor(currentTime/(4*60/(tempo||120)))+1)," / ",midiBars||1,/*#__PURE__*/React.createElement("span",{className:"text-slate-500 ml-1"},"| ",formatTime(currentTime)," / ",formatTime(selDur))):/*#__PURE__*/React.createElement("div",{className:"bg-white border border-[#808080] px-1.5 text-slate-900 font-bold"},formatTime(currentTime)," / ",formatTime(selDur))),/*#__PURE__*/React.createElement("div",{className:"text-slate-800 font-bold truncate max-w-[40%]"},selected?selected.name||selected.original_name:'No file selected'),/*#__PURE__*/React.createElement("div",{className:"text-slate-700"},selBpm," bpm x",rate.toFixed(2)))));};const App=()=>{// ── State Definitions ── const[tracks,setTracks]=useState([{id:'1',name:'Track 01',buffer:null,startTime:0,volumeDb:0,pan:0,muted:false,solo:false,color:'#0f766e',markers:[],serverFileId:null,clips:[],sections:[],midiItems:[],isArmed:false,monitoringEnabled:true,inputSource:{deviceType:'NONE',deviceId:''}},{id:'2',name:'Track 02',buffer:null,startTime:0,volumeDb:0,pan:0,muted:false,solo:false,color:'#1d4ed8',markers:[],serverFileId:null,clips:[],sections:[],midiItems:[],isArmed:false,monitoringEnabled:true,inputSource:{deviceType:'NONE',deviceId:''}}]);const[appWarningModal,setAppWarningModal]=useState(null);const[bpm,setBpm]=useState(localStorage.getItem('studio_bpm')||'120');const prevBpmRef=useRef(bpm);const[draggedClip,setDraggedClip]=useState(null);const[hoveredTrackId,setHoveredTrackId]=useState(null);// Recalculate item/section/selection durations when BPM changes useEffect(()=>{const oldSpb=prevBpmRef.current?60.0/parseFloat(prevBpmRef.current)*4:null;const bpmVal=parseFloat(bpm)||120;const secondsPerBar=60.0/bpmVal*4;// Recalculate range loop selection to maintain bar count (tempo mode only) if(oldSpb&&selectionFollowsTempo&&selectionStart!==null&&selectionEnd!==null&&selectionEnd>selectionStart){const startBar=selectionStart/oldSpb;const endBar=selectionEnd/oldSpb;if(endBar-startBar>0.01){setSelectionStart(startBar*secondsPerBar);setSelectionEnd(endBar*secondsPerBar);}}prevBpmRef.current=bpm;// Force canvas redraw @@ -450,7 +450,8 @@ const toggleTrackSoloEvaluate=trackId=>{const wasPlaying=isPlaying;const playing const nodes=activeTrackNodesRef.current[trackId];if(nodes){const volLinear=val<=-50?0:Math.pow(10,val/20);nodes.gainNode.gain.setValueAtTime(volLinear,getAudioContext().currentTime);}};const updateTrackPan=(trackId,val)=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,pan:val}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'PAN_CHANGE',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});// Real-time update during playback const nodes=activeTrackNodesRef.current[trackId];if(nodes){nodes.pannerNode.pan.setValueAtTime(val/100,getAudioContext().currentTime);}};const updateTrackName=(trackId,name)=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,name}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'RENAME',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});};const updateTrackColor=(trackId,color)=>{const beforeSnap=captureTrackSnapshot(trackId);setTracks(prev=>prev.map(t=>t.id===trackId?{...t,color}:t));setUndoStack(prev=>{const next=[...prev,{action_type:'RECOLOR',track_id:trackId,timestamp:Date.now(),before_state:beforeSnap,after_state:captureTrackSnapshot(trackId)}];if(next.length>MAX_UNDO)next.shift();return next;});};const updateClipName=(trackId,clipId,newName)=>{setTracks(prev=>prev.map(t=>{if(t.id!==trackId)return t;const clips=t.clips&&t.clips.length>0?t.clips:[];return{...t,clips:clips.map(c=>c.id===clipId?{...c,name:newName}:c)};}));};// ── MIDI .mid file parser ── const parseMidiFile=arrayBuffer=>{const data=new Uint8Array(arrayBuffer);if(data.length<14)return null;var pos=0;var read32=function(){var v=data[pos]<<24|data[pos+1]<<16|data[pos+2]<<8|data[pos+3];pos+=4;return v;};var read16=function(){var v=data[pos]<<8|data[pos+1];pos+=2;return v;};var readVLQ=function(){var v=0,b;do{b=data[pos++];v=v<<7|b&0x7f;}while(b&0x80);return v;};var header=String.fromCharCode(data[0],data[1],data[2],data[3]);if(header!=='MThd')return null;pos=8;var fmt=read16();var numTracks=read16();var division=read16();var ticksPerBeat=division&0x8000?480:division||480;var bpm=120;var result=[];for(var t=0;tdata.length)break;var trkId=String.fromCharCode(data[pos],data[pos+1],data[pos+2],data[pos+3]);pos+=4;var trkLen=read32();var endPos=Math.min(pos+trkLen,data.length);if(trkId!=='MTrk'){pos=endPos;continue;}var absTicks=0;var runningStatus=0;var trackName='MIDI Track '+(t+1);var midiNotes=[];var pendingNotes={};var maxAbsTick=0;while(pos=0x80){if(status<0xf0){runningStatus=status;}pos++;}else{status=runningStatus;}var cmd=status>>4;if(cmd===0x9||cmd===0x8){var chan=status&0x0F;var pitch=data[pos++];var vel=pos0){pendingNotes[noteKey]={tick:absTicks,vel:vel};if(absTicks>maxAbsTick)maxAbsTick=absTicks;}else{var pn=pendingNotes[noteKey];if(pn){var durTicks=absTicks-pn.tick;if(durTicks<=0)durTicks=240;midiNotes.push({id:'mn_'+t+'_'+pitch+'_'+pn.tick,pitch:pitch,start_beat:pn.tick/ticksPerBeat,duration_beats:durTicks/ticksPerBeat,velocity:Math.min(1,pn.vel/127)});delete pendingNotes[noteKey];}}}else if(status>=0xc0&&status<0xe0){if(pos=0xe0&&status<0xf0){if(pos+2<=endPos)pos+=2;}else if(status>=0xa0&&status<0xc0){if(pos+2<=endPos)pos+=2;}else if(status>=0xf0&&status<0xf8){if(pos=endPos)break;var metaType=data[pos++];var metaLen=readVLQ();if(metaType===0x03){try{trackName=String.fromCharCode.apply(null,Array.from(data.subarray(pos,pos+metaLen)));}catch(e){}}else if(metaType===0x51&&pos+3<=endPos){bpm=Math.round(60000000/(data[pos]<<16|data[pos+1]<<8|data[pos+2]));}pos+=Math.min(metaLen,endPos-pos);}else{if(pos+2<=endPos)pos+=2;}}catch(e){pos=endPos;}}Object.keys(pendingNotes).forEach(function(k){var pn=pendingNotes[k];var parts=k.split('_');var p=parseInt(parts[1]);var dur=Math.max(240,maxAbsTick-pn.tick);midiNotes.push({id:'mn_'+t+'_'+p+'_'+pn.tick,pitch:p,start_beat:pn.tick/ticksPerBeat,duration_beats:dur/ticksPerBeat,velocity:Math.min(1,pn.vel/127)});});if(midiNotes.length>0){var lastEnd=0;var maxEndBeat=0;midiNotes.forEach(function(n){var e=(n.start_beat+n.duration_beats)*60/bpm;if(e>lastEnd)lastEnd=e;var eb=n.start_beat+n.duration_beats;if(eb>maxEndBeat)maxEndBeat=eb;});result.push({name:trackName,notes:midiNotes,duration:lastEnd||4,startTime:0,id:'midi_'+t+'_'+Date.now(),totalBeats:maxEndBeat||16,bars:Math.max(1,Math.ceil((maxEndBeat||16)/4)),bpm:bpm,ticksPerBeat:ticksPerBeat});}pos=endPos;}return result.length>0?result:null;};window.parseMidiFile=parseMidiFile;// ── Load File on Track (with server upload) ── -const loadFileOnTrack=async(trackId,file)=>{if(!file)return;var fileName=file.name||'';var isMidi=/\.mid$|\.midi$/i.test(fileName);showToast(`Đang nạp file ${fileName}...`,'info');try{if(isMidi){var arrayBuffer=await file.arrayBuffer();var midiResult=parseMidiFile(arrayBuffer);if(!midiResult||midiResult.length===0){showToast('Không tìm thấy nốt nhạc trong file MIDI.','error');return;}if(midiResult.length===1){updateActiveTracks(prev=>prev.map(function(t){if(t.id!==trackId)return t;return{...t,name:fileName,midiItems:[midiResult[0]]};}));showToast('Đã tải MIDI: '+fileName,'success');}else{var colors=['#0f766e','#1d4ed8','#701a75','#a21caf','#b45309','#ca8a04','#dc2626','#0891b2'];var firstDone=false;midiResult.forEach(function(midiItem,idx){if(!firstDone){updateActiveTracks(prev=>prev.map(function(t){if(t.id!==trackId)return t;return{...t,name:midiItem.name||fileName,midiItems:[midiItem]};}));firstDone=true;}else{var newId='midi_track_'+Date.now()+'_'+idx;updateActiveTracks(function(prev){var curLen=prev.length;return prev.concat([{id:newId,name:midiItem.name||'MIDI Track '+(idx+1),buffer:null,startTime:0,volumeDb:0,pan:0,muted:false,solo:false,color:colors[idx%colors.length],markers:[],serverFileId:null,clips:[],sections:[],midiItems:[midiItem],isArmed:false,monitoringEnabled:true,inputSource:{deviceType:'NONE',deviceId:''}}]);});}});showToast('Đã tải MIDI: '+midiResult.length+' tracks from '+fileName,'success');}return;}// Upload to server +// ── Resolve Media Explorer drag file → real File (for timeline drop) ── +const resolveMediaExplorerDropFile=async()=>{const mef=window.__mediaExplorerDragFile;if(!mef)return null;try{if(mef.handle&&typeof mef.handle.getFile==='function'){const f=await mef.handle.getFile();return new File([f],f.name||mef.name,{type:f.type||'application/octet-stream'});}if(mef.file_id||mef.fileId){const fid=mef.file_id||mef.fileId;const resp=await fetch(`${API_BASE_URL}/api/v1/audio/download/${fid}`);const blob=await resp.blob();return new File([blob],mef.name||mef.original_name||fid,{type:blob.type||'audio/wav'});}if(mef.path){const resp=await fetch(`${API_BASE_URL}/api/v1/media/file?path=${encodeURIComponent(mef.path)}`);const blob=await resp.blob();return new File([blob],mef.name||mef.path.split(/[\\/]/).pop(),{type:blob.type||'application/octet-stream'});}}catch(e){showToast('Không thể nạp file từ Media Explorer: '+e.message,'error');}return null;};const loadFileOnTrack=async(trackId,file)=>{if(!file)return;var fileName=file.name||'';var isMidi=/\.mid$|\.midi$/i.test(fileName);showToast(`Đang nạp file ${fileName}...`,'info');try{if(isMidi){var arrayBuffer=await file.arrayBuffer();var midiResult=parseMidiFile(arrayBuffer);if(!midiResult||midiResult.length===0){showToast('Không tìm thấy nốt nhạc trong file MIDI.','error');return;}if(midiResult.length===1){updateActiveTracks(prev=>prev.map(function(t){if(t.id!==trackId)return t;return{...t,name:fileName,midiItems:[midiResult[0]]};}));showToast('Đã tải MIDI: '+fileName,'success');}else{var colors=['#0f766e','#1d4ed8','#701a75','#a21caf','#b45309','#ca8a04','#dc2626','#0891b2'];var firstDone=false;midiResult.forEach(function(midiItem,idx){if(!firstDone){updateActiveTracks(prev=>prev.map(function(t){if(t.id!==trackId)return t;return{...t,name:midiItem.name||fileName,midiItems:[midiItem]};}));firstDone=true;}else{var newId='midi_track_'+Date.now()+'_'+idx;updateActiveTracks(function(prev){var curLen=prev.length;return prev.concat([{id:newId,name:midiItem.name||'MIDI Track 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