// 批注范围锚定（06 §2：nodeId + textStart + textEnd + textHash；10 §5「批注范围准确」）。
// RDM 契约：偏移是冻结节点文本上的 Unicode 码点（Go rune = JS Array.from 下标）半开区间；
// quote 与范围同发时须等于范围原文；回复不带范围；textHash/range 永不由前端发送。
import { describe, expect, it } from 'vitest'
import { createElement } from 'react'
import { renderToStaticMarkup } from 'react-dom/server'
import {
  annotatePayload, codePointRange, describeRenderFailure, normalizeReviewView, partitionAnnotations, selectionAnchor,
} from '../src/documentRenderPresentation'
import { AnnotationGroups, AnnotationScope } from '../src/components/DocumentRenderWorkspace'

describe('码点偏移（UTF-16 选区 → RDM rune 偏移）', () => {
  it('ASCII：半开区间，参数顺序无关，越界裁剪', () => {
    expect(codePointRange('Hello world', 6, 11)).toEqual({ textStart: 6, textEnd: 11, quote: 'world' })
    expect(codePointRange('Hello world', 11, 6)).toEqual({ textStart: 6, textEnd: 11, quote: 'world' })
    expect(codePointRange('Hello world', 6, 99)).toEqual({ textStart: 6, textEnd: 11, quote: 'world' })
  })
  it('首尾空白不计入，纯空白或空选区不记录范围', () => {
    expect(codePointRange('Hello world', 5, 11)).toEqual({ textStart: 6, textEnd: 11, quote: 'world' })
    expect(codePointRange('Hello world', 5, 6)).toBeUndefined()
    expect(codePointRange('Hello world', 3, 3)).toBeUndefined()
  })
  it('CJK：与契约示例一致（"审阅正文 Review" 中 Review 为 5..11）', () => {
    expect(codePointRange('审阅正文 Review', 5, 11)).toEqual({ textStart: 5, textEnd: 11, quote: 'Review' })
    expect(codePointRange('项目内容、目标及意义', 5, 7)).toEqual({ textStart: 5, textEnd: 7, quote: '目标' })
  })
  it('emoji 代理对：UTF-16 下标换算为码点，后续字符不错位', () => {
    const text = '审阅👍正文 Review'
    expect(text.indexOf('Review')).toBe(7)
    expect(codePointRange(text, 7, 13)).toEqual({ textStart: 6, textEnd: 12, quote: 'Review' })
    expect(Array.from(text).slice(6, 12).join('')).toBe('Review')
    expect(codePointRange(text, 2, 4)).toEqual({ textStart: 2, textEnd: 3, quote: '👍' })
  })
  it('端点落在代理对中间时外扩为完整字符，绝不发出半个字符', () => {
    const text = '审阅👍正文'
    expect(codePointRange(text, 3, 5)).toEqual({ textStart: 2, textEnd: 4, quote: '👍正' })
    expect(codePointRange(text, 0, 3)).toEqual({ textStart: 0, textEnd: 3, quote: '审阅👍' })
  })
  it('ZWJ 组合 emoji 按码点（rune）计数而非字形', () => {
    const family = '👨\u200d👩\u200d👧'
    const text = `a${family}b`
    expect(codePointRange(text, 1, 1 + family.length)).toEqual({ textStart: 1, textEnd: 6, quote: family })
  })
})

describe('阅读视图选区判定', () => {
  const hit = (nodeId: string, text: string, start: number, end: number) => ({ nodeId, text, start, end })
  it('无选区或折叠：不记录', () => {
    expect(selectionAnchor(null)).toEqual({ kind: 'none' })
  })
  it('落在单个节点正文内：记录该节点的码点范围', () => {
    expect(selectionAnchor([hit('dn-head', '项目内容、目标及意义', 5, 7)]))
      .toEqual({ kind: 'range', anchor: { nodeId: 'dn-head', textStart: 5, textEnd: 7, quote: '目标' } })
  })
  it('只擦到下一节点起点（零长度交集）仍算单节点', () => {
    expect(selectionAnchor([hit('a', 'Alpha', 0, 5), hit('b', 'Beta', 0, 0)]))
      .toEqual({ kind: 'range', anchor: { nodeId: 'a', textStart: 0, textEnd: 5, quote: 'Alpha' } })
  })
  it('跨越多个节点：说明原因，不记录范围（提交批注整个节点）', () => {
    const r = selectionAnchor([hit('a', 'Alpha', 2, 5), hit('b', 'Beta', 0, 2)])
    expect(r.kind).toBe('multi-node')
    expect(r.kind === 'multi-node' && r.notice).toContain('跨越多个节点')
    expect(r.kind === 'multi-node' && r.notice).toContain('批注整个节点')
  })
  it('选区不含任何节点正文（或只有空白）：说明原因，不记录范围', () => {
    expect(selectionAnchor([]).kind).toBe('outside-text')
    expect(selectionAnchor([hit('a', 'A b', 1, 2)]).kind).toBe('outside-text')
  })
})

describe('rdm.render.review.annotate 载荷', () => {
  const base = { projectId: 'p', submissionId: 'sub', treeNodeId: 'dn-head', text: ' 批 ', operationId: 'op' }
  const range = { nodeId: 'dn-head', textStart: 5, textEnd: 7, quote: '目标' }
  it('有选区：发送 textStart/textEnd/quote，绝不发送 textHash 或 range', () => {
    const p = annotatePayload({ ...base, range })
    expect(p).toEqual({ projectId: 'p', submissionId: 'sub', nodeId: 'dn-head', text: '批', operationId: 'op', textStart: 5, textEnd: 7, quote: '目标' })
    expect(p).not.toHaveProperty('textHash')
    expect(p).not.toHaveProperty('range')
  })
  it('无选区：整节点批注，不带任何范围参数', () => {
    for (const p of [annotatePayload(base), annotatePayload({ ...base, range: null })]) {
      expect(p).toEqual({ projectId: 'p', submissionId: 'sub', nodeId: 'dn-head', text: '批', operationId: 'op' })
    }
  })
  it('回复：即使持有选区也不带范围（继承父批注锚点）', () => {
    const p = annotatePayload({ ...base, replyTo: 'a1', range })
    expect(p).toEqual({ projectId: 'p', submissionId: 'sub', nodeId: 'dn-head', text: '批', operationId: 'op', replyTo: 'a1' })
    for (const k of ['textStart', 'textEnd', 'quote', 'textHash', 'range']) expect(p).not.toHaveProperty(k)
  })
  it('范围不属于目标节点时不发送（绝不把 A 节点的偏移挂到 B 节点）', () => {
    expect(annotatePayload({ ...base, range: { ...range, nodeId: 'dn-other' } })).not.toHaveProperty('textStart')
  })
})

describe('审阅视图：摘录与需重新锚定', () => {
  const person = { id: 'u1', displayName: '审核人' }
  const view = normalizeReviewView({
    annotations: [
      { id: 'a1', nodeId: 'pp.goal', treeNodeId: 'dn-head', author: person, createdAt: '', text: '精确锚定', quote: '目标', needsReanchor: false,
        range: { start: 5, end: 7, textHash: 'h' }, replies: [{ id: 'r1', nodeId: 'pp.goal', treeNodeId: 'dn-head', author: person, createdAt: '', text: '回复', quote: '目标' }] },
      { id: 'a2', nodeId: 'pp.goal', treeNodeId: 'dn-head', author: person, createdAt: '', text: '漂移了', quote: '旧目标', needsReanchor: true, replies: [] },
      { id: 'a3', nodeId: 'pp.sig', treeNodeId: 'dn-head', author: person, createdAt: '', text: '节点级', replies: [] },
    ],
  })
  it('归一化保留 quote 与 needsReanchor；缺省不补造', () => {
    expect(view.annotations[0]).toMatchObject({ quote: '目标' })
    expect(view.annotations[0]).not.toHaveProperty('needsReanchor')
    expect(view.annotations[1]).toMatchObject({ quote: '旧目标', needsReanchor: true })
    expect(view.annotations[2]).not.toHaveProperty('quote')
  })
  it('批注项显示摘录；需重新锚定时有可见状态与说明', () => {
    const { byNode, orphaned } = partitionAnnotations(view.annotations, new Set(['dn-head']))
    const html = renderToStaticMarkup(createElement(AnnotationGroups, { byNode, orphaned, nodeTitle: () => '项目内容、目标及意义', onSelectNode: () => {} }))
    expect(html).toContain('<blockquote class="drw-anno-quote" title="目标">目标</blockquote>')
    expect(html).toContain('<blockquote class="drw-anno-quote" title="旧目标">旧目标</blockquote>')
    expect(html.match(/需重新锚定/g)).toHaveLength(1)
    expect(html).toContain('drw-anno needs-reanchor')
    expect(html).toContain('上方为旧摘录')
    expect(html.match(/drw-anno-quote/g)).toHaveLength(2)
  })
})

describe('撰写区的批注范围', () => {
  const render = (props: Partial<Parameters<typeof AnnotationScope>[0]>) =>
    renderToStaticMarkup(createElement(AnnotationScope, { anchor: null, notice: '', replying: false, onClear: () => {}, ...props }))
  it('有选区：显示摘录、码点位置与改为整个节点', () => {
    const html = render({ anchor: { nodeId: 'dn-head', textStart: 5, textEnd: 7, quote: '目标' } })
    expect(html).toContain('「目标」')
    expect(html).toContain('第 6–7 字')
    expect(html).toContain('改为整个节点')
  })
  it('无选区：明示整个节点', () => {
    expect(render({})).toContain('整个节点（在阅读视图中选中该节点的文字')
  })
  it('选区无效：显示说明', () => {
    expect(render({ notice: '所选文字跨越多个节点' })).toContain('role="status">所选文字跨越多个节点')
  })
  it('回复：沿用原批注范围，不显示选区', () => {
    const html = render({ replying: true, anchor: { nodeId: 'dn-head', textStart: 5, textEnd: 7, quote: '目标' } })
    expect(html).toContain('回复沿用原批注的范围')
    expect(html).not.toContain('目标')
  })
})

describe('review_anchor_invalid: 转为中文可读文案（原始回执保留）', () => {
  const cases: [string, string][] = [
    ['review_anchor_invalid: node pp.sig (image) has no frozen text a range can anchor; address a paragraph, heading, list item or table cell', '没有可按范围批注的正文'],
    ['review_anchor_invalid: quote does not match the frozen text of node pp.goal at 5..7', '与提交审阅时冻结的正文不一致'],
    ['review_anchor_invalid: quote occurs more than once in node pp.goal; supply textStart and textEnd', '出现多次'],
    ['review_anchor_invalid: quote is not in the frozen text of node pp.goal', '不在该节点冻结的正文中'],
    ['review_anchor_invalid: textStart/textEnd 5..99 out of range for node pp.goal (10 characters)', '超出该节点冻结正文的长度'],
    ['review_anchor_invalid: reply must address the parent\'s node pp.goal; replies inherit the parent\'s anchor', '回复只能针对原批注所在的节点'],
    ['textStart and textEnd must be supplied together', '起止位置须成对提供'],
    ['review_anchor_invalid: something new', '批注范围无效'],
  ]
  it.each(cases)('%s', (msg, expected) => {
    for (const raw of [msg, `400: ${JSON.stringify({ error: msg })}`]) {
      const f = describeRenderFailure(new Error(raw))
      expect(f.message).toContain(expected)
      expect(f.message).not.toContain('review_anchor_invalid')
      expect(f.raw).toBe(raw)
    }
  })
  it('非范围错误不受影响', () => {
    expect(describeRenderFailure(new Error('当前编制人不是你')).message).toBe('当前编制人不是你')
  })
})