import assert from "node:assert/strict";
import test from "node:test";
import { buildTaskReportCsv } from "../lib/task-report-csv.ts";
import { getTaskReportData } from "../lib/mvp-db.ts";

const reportRow = {
  id: "task-A",
  name: "夏日种草计划",
  task_type: "content_publish",
  brand: "轻食品牌",
  platform: "小红书",
  status: "active",
  due_at: "2026-08-20",
  created_at: "2026-08-01 10:00:00",
  quantity: 20,
  project_name: "八月投放",
  claimed_count: 10,
  published_count: 8,
  completed_count: 5,
  exposure_total: 12000,
  views_total: 9000,
  d2_likes: 100,
  d2_comments: 20,
  d2_collects: 30,
  d5_likes: 150,
  d5_comments: 25,
  d5_collects: 40,
  d7_likes: 180,
  d7_comments: 30,
  d7_collects: 50,
  latest_likes: 200,
  latest_comments: 40,
  latest_collects: 60,
  latest_shares: 10,
  related_task_id: "",
  related_task_name: null,
  reverse_related_task_id: null,
  reverse_related_task_name: null,
  submitted_count: 0,
};

test("buildTaskReportCsv writes BOM, headers and mapped rows", () => {
  const csv = buildTaskReportCsv([reportRow]);
  assert.ok(csv.startsWith(""), "starts with UTF-8 BOM");
  const lines = csv.slice(1).split("\r\n");
  assert.equal(lines.length, 2);
  assert.equal(
    lines[0],
    [
      "任务ID",
      "任务名称",
      "任务类型",
      "品牌",
      "平台",
      "所属项目",
      "任务状态",
      "计划数量",
      "领取数",
      "发布数",
      "完成数",
      "完成率",
      "截止日期",
      "创建时间",
      "曝光量合计",
      "阅读量合计",
      "D2点赞",
      "D2评论",
      "D2收藏",
      "D5点赞",
      "D5评论",
      "D5收藏",
      "D7点赞",
      "D7评论",
      "D7收藏",
      "最新点赞",
      "最新评论",
      "最新收藏",
      "最新转发",
      "关联任务",
      "截图提交数",
    ].join(","),
  );
  assert.equal(
    lines[1],
    [
      "task-A",
      "夏日种草计划",
      "内容发布",
      "轻食品牌",
      "小红书",
      "八月投放",
      "进行中",
      20,
      10,
      8,
      5,
      "50%",
      "2026-08-20",
      "2026-08-01 10:00:00",
      12000,
      9000,
      100,
      20,
      30,
      150,
      25,
      40,
      180,
      30,
      50,
      200,
      40,
      60,
      10,
      "",
      "",
    ].join(","),
  );
});

test("buildTaskReportCsv escapes commas and quotes, blanks null metrics", () => {
  const csv = buildTaskReportCsv([
    {
      ...reportRow,
      name: '含,逗号"引号"任务',
      project_name: null,
      claimed_count: 0,
      exposure_total: null,
      views_total: null,
      d2_likes: null,
      d2_comments: null,
      d2_collects: null,
      d5_likes: null,
      d5_comments: null,
      d5_collects: null,
      d7_likes: null,
      d7_comments: null,
      d7_collects: null,
      latest_likes: null,
      latest_comments: null,
      latest_collects: null,
      latest_shares: null,
    },
  ]);
  const rowLine = csv.slice(1).split("\r\n")[1];
  assert.ok(rowLine.includes('"含,逗号""引号""任务"'));
  const cells = rowLine.split(",");
  assert.equal(cells.at(-1), "", "content publish row leaves screenshot count empty");
  assert.equal(cells.at(-2), "", "no related task leaves empty");
  assert.equal(cells.at(-20), "", "no claims means empty completion rate");
  assert.equal(cells.at(-18), "2026-08-01 10:00:00");
});

test("buildTaskReportCsv writes related batch and screenshot submission for collect tasks", () => {
  const csv = buildTaskReportCsv([
    {
      ...reportRow,
      task_type: "screenshot_collect",
      related_task_id: "task-B",
      related_task_name: "夏日种草计划",
      submitted_count: 7,
      claimed_count: 12,
    },
  ]);
  const cells = csv.slice(1).split("\r\n")[1].split(",");
  assert.equal(cells.at(-2), "夏日种草计划");
  assert.equal(cells.at(-1), "7");
});

test("getTaskReportData aggregates per task via distributions join", async () => {
  let capturedSql = "";
  const db = {
    prepare(sql) {
      capturedSql = sql;
      return {
        async all() {
          return { results: [reportRow] };
        },
      };
    },
  };
  const rows = await getTaskReportData(db);
  assert.deepEqual(rows, [reportRow]);
  assert.match(capturedSql, /FROM tasks t/);
  assert.match(capturedSql, /LEFT JOIN distributions d ON d\.task_id = t\.id/);
  assert.match(capturedSql, /LEFT JOIN projects p ON p\.id = t\.project_id/);
  assert.match(capturedSql, /GROUP BY t\.id/);
  assert.match(capturedSql, /publish_url/);
  assert.match(capturedSql, /latest_shares/);
  assert.match(capturedSql, /related_task_id/);
  assert.match(capturedSql, /result_submitted_at/);
});