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94004a2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | /**
* useSegmentEditing — undo/redo stack + segment CRUD operations for the dub timeline.
*
* Extracted from App.jsx to reduce its useState/useRef/useCallback count.
* All segment mutations go through this hook so undo tracking is automatic.
*/
import { useState, useRef, useCallback } from 'react';
import { useAppStore } from '../store';
import { askConfirm } from '../utils/dialog';
import { apiPost } from '../api/client';
export default function useSegmentEditing() {
const dubSegments = useAppStore(s => s.dubSegments);
const setDubSegments = useAppStore(s => s.setDubSegments);
// ── Undo / Redo ──
const undoStack = useRef([]);
const redoStack = useRef([]);
const pushUndo = (segments) => {
undoStack.current.push(JSON.stringify(segments));
if (undoStack.current.length > 50) undoStack.current.shift();
redoStack.current = []; // clear redo on new edit
};
const undo = () => {
if (undoStack.current.length === 0) return;
redoStack.current.push(JSON.stringify(dubSegments));
const prev = JSON.parse(undoStack.current.pop());
setDubSegments(prev);
};
const redo = () => {
if (redoStack.current.length === 0) return;
undoStack.current.push(JSON.stringify(dubSegments));
const next = JSON.parse(redoStack.current.pop());
setDubSegments(next);
};
// Wrap setDubSegments calls that are user-edits with undo tracking
const editSegments = (newSegs) => {
pushUndo(dubSegments);
setDubSegments(newSegs);
};
// Stable handlers for virtualized segment rows. Use functional updates so
// they don't depend on dubSegments identity (avoids row re-renders).
const segmentEditField = useCallback((id, field, value) => {
pushUndo(dubSegments);
setDubSegments(prev => prev.map(s => s.id === id ? { ...s, [field]: value } : s));
}, [dubSegments]);
const segmentDelete = useCallback((id) => {
pushUndo(dubSegments);
setDubSegments(prev => prev.filter(s => s.id !== id));
}, [dubSegments]);
const segmentRestoreOriginal = useCallback((id) => {
pushUndo(dubSegments);
setDubSegments(prev => prev.map(s => s.id === id
? { ...s, text: s.text_original || s.text, translate_error: undefined }
: s));
}, [dubSegments]);
// Segment multi-select
const [selectedSegIds, setSelectedSegIds] = useState(new Set());
const lastSelectedIdxRef = useRef(null);
const toggleSegSelect = useCallback((id, idx, shift) => {
setSelectedSegIds(prev => {
const next = new Set(prev);
if (shift && lastSelectedIdxRef.current !== null) {
const [a, b] = [lastSelectedIdxRef.current, idx].sort((x, y) => x - y);
for (let i = a; i <= b; i++) {
const s = dubSegments[i];
if (s) next.add(s.id);
}
} else {
if (next.has(id)) next.delete(id); else next.add(id);
lastSelectedIdxRef.current = idx;
}
return next;
});
}, [dubSegments]);
const selectAllSegs = useCallback((segs) => {
setSelectedSegIds(new Set(segs.map(s => s.id)));
}, []);
const clearSegSelection = useCallback(() => setSelectedSegIds(new Set()), []);
// Bulk actions
const bulkApplyToSelected = useCallback((patch) => {
if (!selectedSegIds.size) return;
pushUndo(dubSegments);
setDubSegments(prev => prev.map(s => selectedSegIds.has(s.id) ? { ...s, ...patch } : s));
}, [dubSegments, selectedSegIds]);
const bulkDeleteSelected = useCallback(async () => {
if (!selectedSegIds.size) return;
if (!(await askConfirm(`Delete ${selectedSegIds.size} selected segment${selectedSegIds.size === 1 ? '' : 's'}?`))) return;
pushUndo(dubSegments);
setDubSegments(prev => prev.filter(s => !selectedSegIds.has(s.id)));
setSelectedSegIds(new Set());
}, [dubSegments, selectedSegIds]);
// Split at text cursor. Time split proportional to cursor position in text.
const segmentSplit = useCallback((id, cursorPos) => {
pushUndo(dubSegments);
setDubSegments(prev => {
const idx = prev.findIndex(s => s.id === id);
if (idx < 0) return prev;
const seg = prev[idx];
const text = seg.text || '';
const pos = Math.max(1, Math.min(cursorPos, text.length - 1));
const ratio = text.length > 0 ? pos / text.length : 0.5;
const midT = seg.start + (seg.end - seg.start) * ratio;
const left = { ...seg, id: `${seg.id}_a`, text: text.slice(0, pos).trim(), end: midT, text_original: text.slice(0, pos).trim() };
const right = { ...seg, id: `${seg.id}_b`, text: text.slice(pos).trim(), start: midT, text_original: text.slice(pos).trim() };
return [...prev.slice(0, idx), left, right, ...prev.slice(idx + 1)];
});
}, [dubSegments]);
// Merge segment with its next sibling.
const segmentMerge = useCallback((id) => {
pushUndo(dubSegments);
setDubSegments(prev => {
const idx = prev.findIndex(s => s.id === id);
if (idx < 0 || idx >= prev.length - 1) return prev;
const a = prev[idx];
const b = prev[idx + 1];
const merged = {
...a,
text: `${a.text || ''} ${b.text || ''}`.trim(),
text_original: `${a.text_original || a.text || ''} ${b.text_original || b.text || ''}`.trim(),
end: b.end,
};
return [...prev.slice(0, idx), merged, ...prev.slice(idx + 2)];
});
}, [dubSegments]);
// Direction editor state
const [directionSegId, setDirectionSegId] = useState(null);
const openDirection = useCallback((seg) => setDirectionSegId(seg.id), []);
const closeDirection = useCallback(() => setDirectionSegId(null), []);
const saveDirection = useCallback((value) => {
if (!directionSegId) return;
pushUndo(dubSegments);
setDubSegments(prev => prev.map(s => s.id === directionSegId
? { ...s, direction: value || undefined }
: s));
}, [directionSegId, dubSegments]);
// Incremental plan — tracks which segments changed since last generate
const [lastGenFingerprints, setLastGenFingerprints] = useState({});
const [incrementalPlan, setIncrementalPlan] = useState(null);
const recomputeIncremental = useCallback(async () => {
if (!dubSegments.length || !Object.keys(lastGenFingerprints).length) {
setIncrementalPlan(null);
return;
}
try {
const res = await apiPost('/tools/incremental', {
segments: dubSegments.map(s => ({
id: String(s.id), text: s.text, target_lang: s.target_lang,
profile_id: s.profile_id, instruct: s.instruct,
speed: s.speed, direction: s.direction,
})),
stored_hashes: lastGenFingerprints,
});
setIncrementalPlan({ stale: res.stale, fresh: res.fresh });
} catch (e) {
console.warn('incremental plan failed', e);
}
}, [dubSegments, lastGenFingerprints]);
return {
// Undo/Redo
undo, redo, pushUndo, editSegments,
// Per-segment operations
segmentEditField, segmentDelete, segmentRestoreOriginal,
segmentSplit, segmentMerge,
// Multi-select
selectedSegIds, setSelectedSegIds,
toggleSegSelect, selectAllSegs, clearSegSelection,
bulkApplyToSelected, bulkDeleteSelected,
// Direction editor
directionSegId, openDirection, closeDirection, saveDirection,
// Incremental plan
lastGenFingerprints, setLastGenFingerprints,
incrementalPlan, setIncrementalPlan,
recomputeIncremental,
};
}
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