427 lines
16 KiB
TypeScript
427 lines
16 KiB
TypeScript
import { useState, useMemo } from 'react';
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import { ChevronRight, Plus, X, GripVertical } from 'lucide-react';
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import { useDraggable, useDroppable } from '@dnd-kit/core';
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import { cn } from '@/lib/utils';
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import type { KeyPoint, OutlineSection as OutlineSectionType } from '../../types/ai-writing';
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import { normalizeKeyPoint } from '../../types/ai-writing';
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import { CollapseTransition } from './CollapseTransition';
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interface OutlineSectionProps {
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section: OutlineSectionType;
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index: number;
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/** 章节在 outline.sections 中的下标，用于生成稳定 dnd id */
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sectionIndex: number;
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onChange: (updated: OutlineSectionType) => void;
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onRemove?: () => void;
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readOnly?: boolean;
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}
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// 各级 grip 标题提示文案
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const DRAG_HINT = '按住拖动：项的顶/底边 = 同级重排；中间区域 = 嵌入为子项';
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const DRAG_HINT_LEAF = '按住拖动重排（顶半区 = 上插入，底半区 = 下插入）';
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// ─── 章节 (Level 1) ───────────────────────────────────────────────────────────
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export function OutlineSection({
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section, index, sectionIndex, onChange, onRemove, readOnly,
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}: OutlineSectionProps) {
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const [expanded, setExpanded] = useState(true);
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const [editingTitle, setEditingTitle] = useState(false);
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const [titleDraft, setTitleDraft] = useState(section.sectionTitle);
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const id = `s${sectionIndex}`;
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const { attributes, listeners, setNodeRef: setDragRef, isDragging } = useDraggable({
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id, disabled: readOnly,
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});
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// 三个 drop 区：before / into / after
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const beforeDrop = useDroppable({ id: `before:${id}`, disabled: readOnly });
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const intoDrop = useDroppable({ id: `into:${id}`, disabled: readOnly });
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const afterDrop = useDroppable({ id: `after:${id}`, disabled: readOnly });
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const keyPoints: KeyPoint[] = useMemo(
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() => (section.keyPoints ?? []).map(normalizeKeyPoint),
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[section.keyPoints],
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);
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function commitTitle() {
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setEditingTitle(false);
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const trimmed = titleDraft.trim();
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if (trimmed && trimmed !== section.sectionTitle) {
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onChange({ ...section, sectionTitle: trimmed });
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} else {
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setTitleDraft(section.sectionTitle);
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}
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}
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function updateKeyPoint(i: number, updated: KeyPoint) {
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const next = [...keyPoints];
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next[i] = updated;
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onChange({ ...section, keyPoints: next });
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}
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function removeKeyPoint(i: number) {
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onChange({ ...section, keyPoints: keyPoints.filter((_, idx) => idx !== i) });
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}
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function addKeyPoint() {
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onChange({ ...section, keyPoints: [...keyPoints, { pointTitle: '', subPoints: [] }] });
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}
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const totalSubPoints = keyPoints.reduce((sum, kp) => sum + (kp.subPoints?.length || 0), 0);
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return (
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<div
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ref={setDragRef}
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{...attributes}
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className={cn(
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'relative rounded border text-xs transition-colors duration-150',
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isDragging ? 'opacity-40 border-blue-300' : 'border-border/60',
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intoDrop.isOver ? 'ring-2 ring-blue-400 ring-inset bg-blue-50/40 dark:bg-blue-950/30' : 'bg-background',
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)}
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>
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{/* before：顶部 12px 命中区，命中时顶边显示蓝色线 */}
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<div ref={beforeDrop.setNodeRef} className="absolute top-0 inset-x-0 h-3 z-20 pointer-events-none" />
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{beforeDrop.isOver && <DropLine position="top" />}
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{/* into：包住头部 + 折叠体；本身就是 drop 容器 */}
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<div ref={intoDrop.setNodeRef}>
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{/* 章节头 */}
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<div className="flex items-center gap-1.5 px-2.5 py-2">
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{!readOnly && (
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<button
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type="button"
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{...listeners}
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className="shrink-0 cursor-grab active:cursor-grabbing touch-none p-0.5 -m-0.5 text-muted-foreground/40 hover:text-muted-foreground"
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aria-label="拖动排序章节"
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title={DRAG_HINT}
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>
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<GripVertical className="size-3" />
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</button>
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)}
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<button
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type="button"
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onClick={() => setExpanded((v) => !v)}
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className="shrink-0"
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>
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<ChevronRight
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className={cn(
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'size-3.5 text-muted-foreground transition-transform duration-200',
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expanded && 'rotate-90',
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)}
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/>
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</button>
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<span className="text-muted-foreground/60 shrink-0 w-4 text-center">{index + 1}.</span>
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{editingTitle && !readOnly ? (
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<input
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autoFocus
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value={titleDraft}
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onChange={(e) => setTitleDraft(e.target.value)}
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onBlur={commitTitle}
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onKeyDown={(e) => {
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if (e.key === 'Enter') commitTitle();
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if (e.key === 'Escape') { setTitleDraft(section.sectionTitle); setEditingTitle(false); }
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}}
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className="flex-1 bg-transparent border-b border-primary outline-none font-medium"
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/>
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) : (
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<span
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className={cn('flex-1 font-medium', !readOnly && 'cursor-text hover:text-primary')}
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onClick={() => !readOnly && setEditingTitle(true)}
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>
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{section.sectionTitle || <span className="text-muted-foreground italic">（未命名）</span>}
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</span>
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)}
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<span className="text-muted-foreground/50 shrink-0">
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{keyPoints.length} 小节{totalSubPoints > 0 ? ` · ${totalSubPoints} 子要点` : ''}
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</span>
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{!readOnly && onRemove && (
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<button type="button" onClick={onRemove} className="shrink-0 text-muted-foreground/40 hover:text-destructive">
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<X className="size-3" />
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</button>
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)}
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</div>
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{/* 小节列表 (Level 2) */}
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<CollapseTransition open={expanded}>
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<div className="px-6 pb-2.5 pt-1 space-y-1.5 border-t">
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{keyPoints.map((kp, i) => (
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<KeyPointRow
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key={i}
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keyPoint={kp}
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sectionIndex={sectionIndex}
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keyPointIndex={i}
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onChange={(updated) => updateKeyPoint(i, updated)}
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onRemove={readOnly ? undefined : () => removeKeyPoint(i)}
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readOnly={readOnly}
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/>
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))}
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{!readOnly && (
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<button
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type="button"
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onClick={addKeyPoint}
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className="flex items-center gap-1 text-muted-foreground/60 hover:text-primary pt-0.5"
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>
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<Plus className="size-3" />
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添加小节
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</button>
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)}
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</div>
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</CollapseTransition>
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</div>
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{/* after：底部 12px 命中区 */}
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<div ref={afterDrop.setNodeRef} className="absolute bottom-0 inset-x-0 h-3 z-20 pointer-events-none" />
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{afterDrop.isOver && <DropLine position="bottom" />}
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</div>
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);
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}
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// ─── 小节 (Level 2) ───────────────────────────────────────────────────────────
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interface KeyPointRowProps {
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keyPoint: KeyPoint;
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sectionIndex: number;
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keyPointIndex: number;
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onChange: (updated: KeyPoint) => void;
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onRemove?: () => void;
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readOnly?: boolean;
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}
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function KeyPointRow({ keyPoint, sectionIndex, keyPointIndex, onChange, onRemove, readOnly }: KeyPointRowProps) {
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const [expanded, setExpanded] = useState(true);
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const [editingTitle, setEditingTitle] = useState(false);
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const [titleDraft, setTitleDraft] = useState(keyPoint.pointTitle);
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const id = `s${sectionIndex}-k${keyPointIndex}`;
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const { attributes, listeners, setNodeRef: setDragRef, isDragging } = useDraggable({
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id, disabled: readOnly,
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});
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const beforeDrop = useDroppable({ id: `before:${id}`, disabled: readOnly });
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const intoDrop = useDroppable({ id: `into:${id}`, disabled: readOnly });
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const afterDrop = useDroppable({ id: `after:${id}`, disabled: readOnly });
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function commitTitle() {
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setEditingTitle(false);
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const trimmed = titleDraft.trim();
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if (trimmed !== keyPoint.pointTitle) {
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onChange({ ...keyPoint, pointTitle: trimmed });
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}
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}
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function updateSubPoint(i: number, value: string) {
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const next = [...keyPoint.subPoints];
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next[i] = value;
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onChange({ ...keyPoint, subPoints: next });
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}
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function removeSubPoint(i: number) {
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onChange({ ...keyPoint, subPoints: keyPoint.subPoints.filter((_, idx) => idx !== i) });
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}
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function addSubPoint() {
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onChange({ ...keyPoint, subPoints: [...keyPoint.subPoints, ''] });
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setExpanded(true);
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}
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return (
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<div
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ref={setDragRef}
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{...attributes}
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className={cn(
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'relative rounded border border-border/40 transition-colors duration-150',
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isDragging && 'opacity-40 border-blue-300',
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intoDrop.isOver ? 'ring-2 ring-blue-400 ring-inset bg-blue-50/40 dark:bg-blue-950/30' : 'bg-muted/10',
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)}
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>
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<div ref={beforeDrop.setNodeRef} className="absolute top-0 inset-x-0 h-2 z-20 pointer-events-none" />
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{beforeDrop.isOver && <DropLine position="top" />}
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<div ref={intoDrop.setNodeRef}>
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{/* 小节头 */}
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<div className="flex items-center gap-1.5 px-2 py-1.5">
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{!readOnly && (
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<button
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type="button"
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{...listeners}
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className="shrink-0 cursor-grab active:cursor-grabbing touch-none p-0.5 -m-0.5 text-muted-foreground/30 hover:text-muted-foreground"
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aria-label="拖动排序小节"
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title={DRAG_HINT}
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>
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<GripVertical className="size-3" />
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</button>
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)}
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<button
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type="button"
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onClick={() => setExpanded((v) => !v)}
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className="shrink-0"
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aria-label="展开/收起子要点"
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>
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<ChevronRight
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className={cn(
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'size-3 text-muted-foreground/60 transition-transform duration-200',
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expanded && 'rotate-90',
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)}
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/>
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</button>
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<span className="text-purple-500/70 shrink-0">###</span>
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{editingTitle && !readOnly ? (
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<input
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autoFocus
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value={titleDraft}
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onChange={(e) => setTitleDraft(e.target.value)}
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onBlur={commitTitle}
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onKeyDown={(e) => {
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if (e.key === 'Enter') commitTitle();
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if (e.key === 'Escape') { setTitleDraft(keyPoint.pointTitle); setEditingTitle(false); }
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}}
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className="flex-1 bg-transparent border-b border-primary outline-none"
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placeholder="小节标题"
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/>
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) : (
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<span
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className={cn('flex-1', !readOnly && 'cursor-text hover:text-primary')}
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onClick={() => !readOnly && setEditingTitle(true)}
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>
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{keyPoint.pointTitle || <span className="text-muted-foreground italic">（未命名小节）</span>}
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</span>
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)}
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<span className="text-muted-foreground/40 shrink-0 text-[10px]">
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{keyPoint.subPoints.length > 0 ? `${keyPoint.subPoints.length} 子要点` : '无子要点'}
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</span>
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{!readOnly && onRemove && (
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<button
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type="button"
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onClick={onRemove}
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className="shrink-0 text-muted-foreground/40 hover:text-destructive"
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aria-label="删除小节"
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>
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<X className="size-3" />
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</button>
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)}
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</div>
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{/* 子要点 (Level 3) */}
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<CollapseTransition open={expanded}>
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<div className="px-6 pb-1.5 space-y-0.5 border-t border-border/30 bg-background/40">
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{keyPoint.subPoints.map((sp, i) => (
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<SubPointRow
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key={i}
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value={sp}
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sectionIndex={sectionIndex}
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keyPointIndex={keyPointIndex}
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subPointIndex={i}
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onChange={(value) => updateSubPoint(i, value)}
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onRemove={readOnly ? undefined : () => removeSubPoint(i)}
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readOnly={readOnly}
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/>
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))}
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{!readOnly && (
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<button
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type="button"
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onClick={addSubPoint}
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className="flex items-center gap-1 text-muted-foreground/50 hover:text-primary pt-0.5 text-[11px]"
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>
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<Plus className="size-3" />
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添加子要点
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</button>
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)}
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</div>
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</CollapseTransition>
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</div>
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<div ref={afterDrop.setNodeRef} className="absolute bottom-0 inset-x-0 h-2 z-20 pointer-events-none" />
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{afterDrop.isOver && <DropLine position="bottom" />}
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</div>
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);
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}
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// ─── 子要点 (Level 3，叶节点，无 into) ────────────────────────────────────────
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interface SubPointRowProps {
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value: string;
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sectionIndex: number;
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keyPointIndex: number;
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subPointIndex: number;
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onChange: (value: string) => void;
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onRemove?: () => void;
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readOnly?: boolean;
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}
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function SubPointRow({
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value, sectionIndex, keyPointIndex, subPointIndex, onChange, onRemove, readOnly,
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}: SubPointRowProps) {
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const id = `s${sectionIndex}-k${keyPointIndex}-p${subPointIndex}`;
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const { attributes, listeners, setNodeRef: setDragRef, isDragging } = useDraggable({
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id, disabled: readOnly,
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});
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// 叶节点：没有 into；顶半区 = before、底半区 = after，把整行高度铺满
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const beforeDrop = useDroppable({ id: `before:${id}`, disabled: readOnly });
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const afterDrop = useDroppable({ id: `after:${id}`, disabled: readOnly });
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return (
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<div
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ref={setDragRef}
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{...attributes}
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className={cn(
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'relative flex items-center gap-1.5 pt-1 rounded transition-colors duration-150',
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isDragging && 'opacity-40',
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)}
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>
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<div
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ref={beforeDrop.setNodeRef}
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className="absolute left-0 right-0 top-0 bottom-1/2 z-20 pointer-events-none"
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/>
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{beforeDrop.isOver && <DropLine position="top" thin />}
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{!readOnly && (
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<button
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type="button"
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{...listeners}
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className="shrink-0 cursor-grab active:cursor-grabbing touch-none p-0.5 -m-0.5 text-muted-foreground/30 hover:text-muted-foreground"
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aria-label="拖动排序子要点"
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title={DRAG_HINT_LEAF}
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>
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<GripVertical className="size-2.5" />
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</button>
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)}
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<span className="text-pink-500/70 shrink-0 text-[10px] font-mono">####</span>
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{readOnly ? (
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<span className="flex-1 text-muted-foreground">{value}</span>
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) : (
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<input
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value={value}
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onChange={(e) => onChange(e.target.value)}
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placeholder="子要点标题(会展开成一段正文)"
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className="flex-1 bg-transparent border-b border-transparent hover:border-border focus:border-primary outline-none text-muted-foreground"
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/>
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)}
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{!readOnly && onRemove && (
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<button
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type="button"
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onClick={onRemove}
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className="shrink-0 text-muted-foreground/30 hover:text-destructive"
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aria-label="删除子要点"
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>
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<X className="size-3" />
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</button>
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)}
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<div
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ref={afterDrop.setNodeRef}
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className="absolute left-0 right-0 top-1/2 bottom-0 z-20 pointer-events-none"
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/>
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{afterDrop.isOver && <DropLine position="bottom" thin />}
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</div>
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);
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}
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// ─── 蓝色插入指示线 ───────────────────────────────────────────────────────────
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function DropLine({ position, thin }: { position: 'top' | 'bottom'; thin?: boolean }) {
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return (
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<div
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className={cn(
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'absolute inset-x-1 bg-blue-500 rounded-full z-30 pointer-events-none',
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thin ? 'h-[2px]' : 'h-[3px]',
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position === 'top' ? '-top-px' : '-bottom-px',
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)}
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/>
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);
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}
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