import { test } from 'node:test'
import assert from 'node:assert/strict'

import {
  classifyTargetVersion,
  describeTargetVersion,
  parseVersionList,
} from '../src/shared/utils/version-picker.ts'

/** /api/version/list 响应样例：接口按 created_at DESC 返回（旧版本重传会排最前） */
function listResponse(items: Array<Record<string, unknown>>) {
  return { items }
}

test('版本列表解析：同一版本重复上传只保留先出现（最新）的一条记录', () => {
  const items = parseVersionList(listResponse([
    { id: 9, version: '4.0.13', file_url: 'https://oss/4.0.13-new.zip', created_at: '2026-09-14 10:00' },
    { id: 5, version: '4.0.14', file_url: 'https://oss/4.0.14.zip', created_at: '2026-09-14 09:00' },
    { id: 2, version: '4.0.13', file_url: 'https://oss/4.0.13-old.zip', created_at: '2026-09-13 10:00' },
  ]))
  assert.equal(items.length, 2)
  const reuploaded = items.find((item) => item.version === '4.0.13')
  assert.equal(reuploaded?.fileUrl, 'https://oss/4.0.13-new.zip', '同版本应取最新上传的包')
})

test('版本列表解析：无下载地址或空版本号的行被丢弃（选了也装不了）', () => {
  const items = parseVersionList(listResponse([
    { id: 1, version: '4.0.14', file_url: 'https://oss/4.0.14.zip', created_at: '2026-09-14 10:36' },
    { id: 2, version: '4.0.13', file_url: '', created_at: '2026-09-13 20:00' },
    { id: 3, version: '   ', file_url: 'https://oss/blank.zip', created_at: '2026-09-13 19:00' },
    { id: 4, version: null, file_url: 'https://oss/null.zip', created_at: '2026-09-13 18:00' },
    null,
    'not-an-object',
  ]))
  assert.deepEqual(items.map((item) => item.version), ['4.0.14'])
})

test('版本列表解析：按版本号从高到低排序，旧版本重传不会排到最前', () => {
  const items = parseVersionList(listResponse([
    // 旧版本刚重传：created_at 最新，但版本号最低
    { id: 30, version: '4.0.9', file_url: 'https://oss/4.0.9.zip', created_at: '2026-09-14 11:00' },
    { id: 29, version: '4.0.14', file_url: 'https://oss/4.0.14.zip', created_at: '2026-09-14 10:00' },
    { id: 28, version: '4.0.13', file_url: 'https://oss/4.0.13.zip', created_at: '2026-09-13 20:00' },
  ]))
  assert.deepEqual(items.map((item) => item.version), ['4.0.14', '4.0.13', '4.0.9'])
})

test('版本列表解析：兼容驼峰字段、v 前缀与空/异常响应', () => {
  const items = parseVersionList(listResponse([
    { id: 1, version: 'v4.0.14', fileUrl: 'https://oss/4.0.14.zip', createdAt: '2026-09-14 10:36' },
  ]))
  assert.deepEqual(items, [
    { id: 1, version: '4.0.14', fileUrl: 'https://oss/4.0.14.zip', createdAt: '2026-09-14 10:36' },
  ])
  assert.deepEqual(parseVersionList(null), [])
  assert.deepEqual(parseVersionList({}), [])
  assert.deepEqual(parseVersionList({ items: 'oops' }), [])
})

test('目标版本判定：高于本机=更新，相等=同版，低于本机=回退', () => {
  assert.equal(classifyTargetVersion('4.0.12', '4.0.14'), 'newer')
  assert.equal(classifyTargetVersion('4.0.14', '4.0.14'), 'same')
  assert.equal(classifyTargetVersion('4.0.14', '4.0.13'), 'older')
  // 多段补零后仍相等
  assert.equal(classifyTargetVersion('4.0.14', '4.0.14.0'), 'same')
})

test('目标版本判定：本机版本未知时返回 unknown，不误判为升级', () => {
  assert.equal(classifyTargetVersion('', '4.0.14'), 'unknown')
  assert.equal(classifyTargetVersion(undefined as unknown as string, '4.0.14'), 'unknown')
  assert.equal(classifyTargetVersion('4.0.14', ''), 'unknown')
})

test('回退文案必须写明低于当前版本（回退是显式操作，不得静默降级）', () => {
  const text = describeTargetVersion('older', '4.0.14', '4.0.13')
  assert.ok(text.includes('4.0.13'), '文案要带目标版本号')
  assert.ok(text.includes('低于当前版本'), '回退必须明确提示低于本机版本')
  assert.ok(text.includes('4.0.14'), '文案要带本机版本号')
})

test('同版与更新文案各自说明动作，本机版本未知时如实说明无法比较', () => {
  assert.ok(describeTargetVersion('same', '4.0.14', '4.0.14').includes('与当前版本相同'))
  const newer = describeTargetVersion('newer', '4.0.12', '4.0.14')
  assert.ok(newer.includes('4.0.12') && newer.includes('4.0.14'))
  assert.ok(describeTargetVersion('unknown', '', '4.0.14').includes('未读到本机版本'))
})