import { describe, expect, it } from 'vitest'
import { groupArtifactsByName } from './artifactGrouping'
import type { Artifact } from './contracts'

// 2026-10-11 实测事故：一次 run 内 register_artifact 三次 → 文件面板三份同名
// 转写报告并列。修复语义（用户裁定）：存储保留版本、界面按名称分组去重。

function art(id: string, name: string, updatedAt: string, size = 40000): Artifact {
  return { id, projectId: 'p1', name, kind: 'document', size, createdAt: updatedAt, updatedAt }
}

describe('groupArtifactsByName', () => {
  it('同名 3 行归一组：latest 为最新，versions 新→旧', () => {
    const g = groupArtifactsByName([
      art('a1', '报告.docx', '2026-10-11T15:22:20Z'),
      art('a2', '报告.docx', '2026-10-11T15:24:06Z'),
      art('a3', '报告.docx', '2026-10-11T15:23:38Z'),
      art('b1', '其他.md', '2026-10-11T15:20:00Z', 100),
    ])
    expect(g).toHaveLength(2)
    const grp = g.find(x => x.latest.name === '报告.docx')!
    expect(grp.latest.id).toBe('a2') // 最新 15:24:06
    expect(grp.versions).toHaveLength(3)
    expect(grp.versions.map(v => v.id)).toEqual(['a2', 'a3', 'a1'])
    expect(g.find(x => x.latest.name === '其他.md')!.versions).toHaveLength(1)
  })

  it('不同名互不影响；空列表返回空', () => {
    const g = groupArtifactsByName([art('x', 'a.md', 'T1'), art('y', 'b.md', 'T2')])
    expect(g).toHaveLength(2)
    expect(groupArtifactsByName([])).toEqual([])
  })
})