import { describe, expect, it } from 'vitest'
import {
  buildConditionSql,
  defaultQueryValue,
  sqlLiteral,
} from '@/components/fms-module-common/queryUtils'
import {
  formatDateValue,
  parseOptions,
  toUtcIsoDateTime,
} from '@/components/fms-module-common/fieldUtils'
import { setMessages, translate } from '@/stores/i18n'

const pad2 = (number) => String(number).padStart(2, '0')

/**
 * 本地墙钟串 → UTC 墙钟串（与实现同口径，断言不依赖运行环境时区）。
 * 库中 datetime 存 UTC，查询条件里的本地时刻会先折算（见后端 TimeUtils / queryUtils.utcWallTextOf）。
 */
function toUtcWall(localText) {
  const date = new Date(String(localText).replace(' ', 'T'))
  return `${date.getUTCFullYear()}-${pad2(date.getUTCMonth() + 1)}-${pad2(date.getUTCDate())} ${pad2(date.getUTCHours())}:${pad2(date.getUTCMinutes())}:${pad2(date.getUTCSeconds())}`
}

/** buildConditionSql 需要按字段名查到字段定义，b_type 决定字面量形式（数字裸写 / 文本 N'...'） */
function fieldMapOf(...fields) {
  return new Map(fields.map((field) => [field.b_field, field]))
}

function item(over = {}) {
  return {
    field: { b_field: 'amount', b_type: 'money', b_options: '' },
    config: { b_operator: 'eq', b_component: 'number' },
    ...over,
  }
}

describe('fms-module-list query utilities', () => {
  it('uses a standalone translation catalog and fallback text', () => {
    setMessages({ 'common.search': '查询' }, 'zh-CN')
    expect(translate('common.search', '搜索')).toBe('查询')
    expect(translate('common.reset', '重置')).toBe('重置')
    setMessages({})
  })

  it('builds numeric and escaped text conditions', () => {
    expect(
      buildConditionSql(
        { field: 'amount', operator: 'eq', value: 12.5 },
        fieldMapOf({ b_field: 'amount', b_type: 'money' }),
      ),
    ).toBe('[amount] = 12.5')
    expect(
      buildConditionSql(
        { field: 'name', operator: 'like', value: "O'Reilly" },
        fieldMapOf({ b_field: 'name', b_type: 'input' }),
      ),
    ).toBe("[name] LIKE N'%O''Reilly%'")
  })

  it('builds range and IN conditions while ignoring empty values', () => {
    expect(
      buildConditionSql(
        { field: 'created', operator: 'between', value: ['2026-01-01', '2026-01-31'] },
        fieldMapOf({ b_field: 'created', b_type: 'date' }),
      ),
    ).toBe("[created] BETWEEN N'2026-01-01' AND N'2026-01-31'")
    expect(
      buildConditionSql(
        { field: 'status', operator: 'in', value: ['a', '', 'b'] },
        fieldMapOf({ b_field: 'status', b_type: 'input' }),
      ),
    ).toBe("[status] IN (N'a', N'b')")
  })

  it('日期时间字面量：本地时刻折算成 UTC 后比较，date 字段不折算', () => {
    const datetimeField = { b_field: 'created', b_type: 'datetime' }
    const dateField = { b_field: 'created', b_type: 'date' }

    // datetime：库中存 UTC（见后端 TimeUtils），本地端点先折算再拼字面量；
    // 自带时分秒按原时刻、仅日精度才补当天起 / 当天末，再统一折算
    expect(sqlLiteral('2026-01-01 09:30:00', datetimeField)).toBe(
      `N'${toUtcWall('2026-01-01 09:30:00')}'`,
    )
    expect(sqlLiteral('2026-01-31 18:00:00', datetimeField, true)).toBe(
      `N'${toUtcWall('2026-01-31 18:00:00')}'`,
    )
    expect(sqlLiteral('2026-01-01', datetimeField)).toBe(`N'${toUtcWall('2026-01-01 00:00:00')}'`)
    expect(sqlLiteral('2026-01-31', datetimeField, true)).toBe(
      `N'${toUtcWall('2026-01-31 23:59:59')}'`,
    )
    // date 字段是纯日历值（无时区语义）：始终截到日，不折算
    expect(sqlLiteral('2026-01-01 09:30:00', dateField)).toBe("N'2026-01-01'")
  })

  it('parses options and normalizes defaults', () => {
    const parsed = parseOptions({ b_options: '{"options":[{"key":"1","name":"启用"},"2"]}' })
    expect(parsed.options).toEqual([
      { key: '1', name: '启用', value: '1', label: '启用' },
      { value: '2', label: '2' },
    ])
    expect(
      defaultQueryValue(
        item({
          field: { b_field: 'status', b_type: 'input' },
          config: { b_operator: 'in', b_default_value: 'a,b' },
        }),
      ),
    ).toEqual(['a', 'b'])
  })

  it('formats ISO dates consistently', () => {
    expect(formatDateValue('2026-08-01', false)).toBe('2026-08-01')
    expect(formatDateValue(null)).toBe('')
  })

  /**
   * 时间契约（见后端 TimeUtils 与 fieldUtils 注释）：
   *   库中 datetime 列存 UTC，接口出口是带 Z 的 ISO 串（"2026-09-26T02:00:00Z"）；
   *   展示时按浏览器本地时区折算，提交时再由 toUtcIsoDateTime 转回 UTC。
   * date / time 与无时区标记的墙钟串没有时区语义，原样透传。
   */
  it('展示：带 Z 的 UTC 串折算成本地，墙钟串与日期串原样透传', () => {
    // 用往返断言，不依赖运行环境时区
    const local = '2026-09-15 21:16:47'
    const utc = toUtcIsoDateTime(local)
    expect(utc).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z$/)
    expect(formatDateValue(utc, true)).toBe(local)
    expect(formatDateValue(utc, false)).toBe('2026-09-15')

    // 无时区标记的墙钟串（存量数据、本地值）：透传
    expect(formatDateValue('2026-09-15 21:16:47', true)).toBe('2026-09-15 21:16:47')
    expect(formatDateValue('2026-09-15 21:16:47', false)).toBe('2026-09-15')
    expect(formatDateValue('2026-09-15', false)).toBe('2026-09-15')
    // 非日期开头的输入（数字时间戳等）仍走 Date 兜底，按本地时间格式化
    expect(formatDateValue(1789471007000, true)).toMatch(/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/)
  })

  it('提交：本地时间值转成带 Z 的 UTC 串，已是带标记的串原样返回', () => {
    expect(toUtcIsoDateTime('2026-09-15 21:16:47')).toMatch(
      /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z$/,
    )
    expect(toUtcIsoDateTime('2026-09-15T13:16:47Z')).toBe('2026-09-15T13:16:47Z')
    expect(toUtcIsoDateTime('2026-09-15T21:16:47+08:00')).toBe('2026-09-15T21:16:47+08:00')
    // 本地 → UTC → 展示：往返一致
    expect(formatDateValue(toUtcIsoDateTime('2026-09-15 21:16:47'), true)).toBe('2026-09-15 21:16:47')
  })
})