import { randomUUID } from "node:crypto";
import { sql } from "@umt/db";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { ensureSetupToken } from "../../src/modules/auth-settings/auth-service.ts";
import { nextCronAfter } from "../../src/modules/schedules/cron.ts";
import { createSchedulesModule } from "../../src/modules/schedules/index.ts";
import {
  registerScheduledJob,
  type ScheduledJobDef,
  type ScheduleRegistry,
  scheduleRegistry,
} from "../../src/modules/schedules/registry.ts";
import { Scheduler } from "../../src/modules/schedules/scheduler.ts";
import type { ServerContext } from "../../src/modules/types.ts";
import { Browser, bearer, createHarness, type Harness, pgAvailable } from "../auth-settings/harness.ts";
import { DEV_KEY, json } from "../helpers.ts";

// W7-C 定时任务注册表:登记不覆盖用户改动、调度单实例锁、立即执行幂等、失败记录、跳过本次、
// agent_check 入队 runAgent 与结果回填、端点鉴权(只接受控制台会话)。

const hasPg = await pgAvailable();
const PASSWORD = "correct horse battery";

describe("cron", () => {
  it("按 5 段表达式取下一次时间", () => {
    const base = new Date(2026, 8, 28, 10, 7, 30); // 周一
    expect(nextCronAfter("*/15 * * * *", base)).toEqual(new Date(2026, 8, 28, 10, 15, 0));
    expect(nextCronAfter("30 3 * * *", base)).toEqual(new Date(2026, 8, 29, 3, 30, 0));
    expect(nextCronAfter("0 9 * * 0", base)).toEqual(new Date(2026, 9, 4, 9, 0, 0));
    expect(nextCronAfter("0 0 1 1 *", base)).toEqual(new Date(2027, 0, 1, 0, 0, 0));
    expect(() => nextCronAfter("61 * * * *", base)).toThrow();
  });
});

interface Enq {
  task: string;
  input: unknown;
  key: string;
}

describe.skipIf(!hasPg)("定时任务注册表(真实 PG)", () => {
  let h: Harness;
  let admin: Browser;
  const enqueued: Enq[] = [];
  const mod = createSchedulesModule();
  let ctx: ServerContext;
  let reg: ScheduleRegistry;
  let sched: Scheduler;
  const calls = new Map<string, number>();

  const api = async (method: string, path: string, body?: unknown) => {
    const res = await admin.req(method, path, body);
    return { status: res.status, body: await json(res) };
  };
  const job = async (id: string) =>
    await h.db.selectFrom("scheduled_job").selectAll().where("id", "=", id).executeTakeFirstOrThrow();
  const counting = (key: string, extra: Partial<ScheduledJobDef> = {}): ScheduledJobDef => ({
    key,
    defaults: { name: key, group: "maintain", schedule: { type: "interval", everyMs: 60_000 } },
    run: async () => {
      calls.set(key, (calls.get(key) ?? 0) + 1);
      return { summary: "done" };
    },
    ...extra,
  });

  beforeAll(async () => {
    h = await createHarness({ extraModules: [mod] });
    ctx = h.ctx;
    // runAgent 入队用的假引擎(同键去重)
    const keys = new Set<string>();
    (ctx as { engine: ServerContext["engine"] }).engine = {
      ...ctx.engine,
      async enqueue(task: string, input: unknown, opts: { idempotencyKey: string }) {
        const dup = keys.has(opts.idempotencyKey);
        if (!dup) {
          keys.add(opts.idempotencyKey);
          enqueued.push({ task, input, key: opts.idempotencyKey });
        }
        return { runId: randomUUID(), deduplicated: dup };
      },
    } as ServerContext["engine"];
    reg = scheduleRegistry(ctx);
    sched = new Scheduler(ctx, reg, { tickMs: 3_600_000, lockRetryMs: 50, harvestMs: 0 });
    const token = await ensureSetupToken(ctx);
    admin = new Browser(h.app);
    expect(
      (await admin.req("POST", "/auth/setup", { setupToken: token, username: "admin", password: PASSWORD })).status,
    ).toBe(200);
  }, 60_000);

  afterAll(async () => {
    await sched?.stop();
    await h?.close();
  });

  it("登记默认值;用户改过的开关与调度不被再次登记覆盖;reset 恢复默认", async () => {
    registerScheduledJob(ctx, counting("test.keep"));
    await sched.tick();
    await sched.idle();
    let row = await job("test.keep");
    expect(row).toMatchObject({ enabled: true, customized: false, schedule: { type: "interval", everyMs: 60_000 } });

    const r = await api("PATCH", "/schedules/test.keep", {
      enabled: false,
      schedule: { type: "interval", everyMs: 120_000 },
    });
    expect(r.status).toBe(200);
    expect(r.body.data).toMatchObject({ enabled: false, customized: true });

    // 模块再次启动,默认值变了
    registerScheduledJob(
      ctx,
      counting("test.keep", {
        defaults: { name: "改名了", group: "download", schedule: { type: "interval", everyMs: 30_000 } },
      }),
    );
    await sched.tick();
    row = await job("test.keep");
    expect(row).toMatchObject({
      name: "改名了",
      board_group: "download",
      enabled: false,
      schedule: { type: "interval", everyMs: 120_000 },
      default_schedule: { type: "interval", everyMs: 30_000 },
    });

    const reset = await api("PATCH", "/schedules/test.keep", { reset: true });
    expect(reset.body.data).toMatchObject({
      enabled: true,
      customized: false,
      schedule: { type: "interval", everyMs: 30_000 },
    });

    // 间隔下限与 cron 校验
    expect((await api("PATCH", "/schedules/test.keep", { schedule: { type: "interval", everyMs: 500 } })).status).toBe(
      422,
    );
    expect(
      (await api("PATCH", "/schedules/test.keep", { schedule: { type: "cron", cron: "99 * * * *" } })).status,
    ).toBe(422);
    const cron = await api("PATCH", "/schedules/test.keep", { schedule: { type: "cron", cron: "0 4 * * *" } });
    expect(cron.status).toBe(200);
    expect(new Date(cron.body.data.nextRunAt).getHours()).toBe(4);
  });

  it("config:没改过的行随代码默认值整体更新;PATCH 过的保留表内值", async () => {
    const def = (config: Record<string, unknown>) =>
      counting("test.cfg", {
        defaults: { name: "c", group: "download", schedule: { type: "interval", everyMs: 60_000 }, config },
      });
    registerScheduledJob(ctx, def({ list: ["a"] }));
    await sched.tick();
    registerScheduledJob(ctx, def({ list: ["a", "b"] }));
    await sched.tick();
    expect((await job("test.cfg")).config).toEqual({ list: ["a", "b"] });
    expect((await api("PATCH", "/schedules/test.cfg", { config: { list: ["x"] } })).status).toBe(200);
    registerScheduledJob(ctx, def({ list: ["a", "b", "c"], extra: 1 }));
    await sched.tick();
    expect((await job("test.cfg")).config).toEqual({ list: ["x"], extra: 1 });
  });

  it("立即执行幂等(合并重复请求)且不改下次运行时间", async () => {
    registerScheduledJob(
      ctx,
      counting("test.now", { defaults: { ...counting("x").defaults, firstRun: "after_interval" } }),
    );
    await sched.tick();
    const before = await job("test.now");
    expect(before.next_run_at!.getTime()).toBeGreaterThan(Date.now());
    const a = await api("POST", "/schedules/test.now/run-now");
    const b = await api("POST", "/schedules/test.now/run-now");
    expect(a.body.data.queued).toBe(true);
    expect(b.body.data.queued).toBe(false);
    const started = await sched.tick();
    expect(started).toContain("test.now");
    await sched.idle();
    expect(await sched.tick()).not.toContain("test.now");
    await sched.idle();
    expect(calls.get("test.now")).toBe(1);
    const after = await job("test.now");
    expect(after.next_run_at).toEqual(before.next_run_at);
    expect(after).toMatchObject({ last_status: "ok", run_count: 1, run_requested_at: null, running_since: null });
    const runs = await api("GET", "/schedules/test.now/runs");
    expect(runs.body.data.items).toHaveLength(1);
    expect(runs.body.data.items[0]).toMatchObject({ trigger: "manual", status: "ok", summary: "done" });
  });

  it("失败写入 last_error / fail_count 与历史;跳过本次顺延一个周期", async () => {
    registerScheduledJob(ctx, {
      key: "test.fail",
      defaults: { name: "会失败", group: "maintain", schedule: { type: "interval", everyMs: 60_000 } },
      run: async () => {
        throw new Error("qB 连不上");
      },
    });
    await sched.tick();
    await sched.idle();
    const row = await job("test.fail");
    expect(row).toMatchObject({ last_status: "failed", last_error: "qB 连不上", fail_count: 1, run_count: 1 });
    // interval:下次 = 结束 + 周期
    expect(row.next_run_at!.getTime() - Date.now()).toBeGreaterThan(50_000);

    const skip = await api("POST", "/schedules/test.fail/skip");
    expect(skip.status).toBe(200);
    expect(new Date(skip.body.data.nextRunAt).getTime() - row.next_run_at!.getTime()).toBe(60_000);
    const runs = (await api("GET", "/schedules/test.fail/runs")).body.data.items;
    expect(runs.map((r: { trigger: string; status: string }) => `${r.trigger}:${r.status}`)).toEqual([
      "skip:skipped",
      "schedule:failed",
    ]);
    expect(runs[1].error).toBe("qB 连不上");
  });

  it("单实例锁:两个调度器只有一个执行;执行者停止后另一个接手", async () => {
    const regA = scheduleRegistry({ db: {} } as ServerContext);
    const regB = scheduleRegistry({ db: {} } as ServerContext);
    const ran: string[] = [];
    for (const [name, r] of [
      ["A", regA],
      ["B", regB],
    ] as const) {
      r.register({
        key: "test.lock",
        defaults: { name: "锁", group: "maintain", schedule: { type: "interval", everyMs: 1 } },
        run: async () => {
          ran.push(name);
          return {};
        },
      });
    }
    const a = new Scheduler(ctx, regA, { tickMs: 20, lockRetryMs: 30 });
    const b = new Scheduler(ctx, regB, { tickMs: 20, lockRetryMs: 30 });
    // 表里其它测试的任务不要被 a/b 执行:只登记了 test.lock,其余 task 行没有执行体会被跳过
    a.start();
    await new Promise((r) => setTimeout(r, 150));
    b.start();
    await new Promise((r) => setTimeout(r, 400));
    expect(a.leader).toBe(true);
    expect(b.leader).toBe(false);
    expect(ran.length).toBeGreaterThan(2);
    expect(new Set(ran)).toEqual(new Set(["A"]));
    const board = await api("GET", "/schedules");
    expect(board.body.data.schedulerOnline).toBe(true);

    await a.stop();
    await new Promise((r) => setTimeout(r, 400));
    expect(b.leader).toBe(true);
    expect(ran).toContain("B");
    await b.stop();
    await sql`update scheduled_job set enabled = false where id = 'test.lock'`.execute(h.db);
  });

  it("agent_check:新建巡检 → 立即执行入队 runAgent;结束后回填结果并写入待处理", async () => {
    const created = await api("POST", "/schedules", {
      name: "自定义巡检",
      schedule: { type: "interval", everyMs: 3_600_000 },
      config: {
        goalTemplate: "巡检 {{date}}:待处理 {{openDecisions}} 条",
        capabilityAllowlist: ["task.inspect", "inventory.query", "download.submit"],
        budget: { maxToolCalls: 5 },
        reportAsDecision: true,
      },
    });
    expect(created.status).toBe(200);
    const id = created.body.data.id as string;
    expect(created.body.data).toMatchObject({ kind: "agent_check", builtin: false, group: "agent", enabled: false });

    expect((await api("POST", `/schedules/${id}/run-now`)).body.data.queued).toBe(true);
    await sched.tick();
    await sched.idle();
    const [run] = (await api("GET", `/schedules/${id}/runs`)).body.data.items;
    expect(run).toMatchObject({ trigger: "manual", status: "ok" });
    expect(run.agentRunId).toBeTruthy();
    const ar = await h.db
      .selectFrom("agent_run")
      .selectAll()
      .where("id", "=", run.agentRunId)
      .executeTakeFirstOrThrow();
    expect(ar).toMatchObject({ trigger: "schedule", mode: "plan_only", created_by: `schedule:${id}` });
    expect(ar.goal).toMatch(/^巡检 \d{4}-\d{2}-\d{2}:待处理 0 条$/);
    // 只读巡检:execute 类能力(download.submit)被剔除
    expect((ar.scope as { capabilities: string[] }).capabilities).toEqual(["task.inspect", "inventory.query"]);
    expect(ar.budget).toMatchObject({ maxToolCalls: 5 });
    expect(enqueued.filter((e) => e.task === "runAgent")).toHaveLength(1);

    // runAgent 结束 → 回填
    await h.db
      .updateTable("agent_run")
      .set({ status: "succeeded", summary: "一切正常" })
      .where("id", "=", ar.id)
      .execute();
    expect(await sched.harvest()).toBe(1);
    const [after] = (await api("GET", `/schedules/${id}/runs`)).body.data.items;
    expect(after).toMatchObject({ agentStatus: "succeeded", summary: "一切正常" });
    const d = await h.db.selectFrom("decision").selectAll().where("agent_run_id", "=", ar.id).executeTakeFirstOrThrow();
    expect(d).toMatchObject({ kind: "other", severity: "info", summary: "一切正常" });
    expect(await sched.harvest()).toBe(0);

    // INT-3:看板给巡检带最近会话的费用与模型汇总
    await h.db
      .updateTable("agent_run")
      .set({ provider: "anthropic", model: "claude-x", usage: JSON.stringify({ costUsd: 0.25 }) })
      .where("id", "=", ar.id)
      .execute();
    const listed = (await api("GET", "/schedules")).body.data.items.find((j: { id: string }) => j.id === id);
    expect(listed.agentRuns).toMatchObject({
      count: 1,
      lastCostUsd: 0.25,
      avgCostUsd: 0.25,
      weekCount: 1,
      weekCostUsd: 0.25,
      lastProvider: "anthropic",
      lastModel: "claude-x",
      models: [{ provider: "anthropic", model: "claude-x", count: 1 }],
      recent: [{ id: ar.id, status: "succeeded", summary: "一切正常", costUsd: 0.25 }],
    });
    const plain = (await api("GET", "/schedules")).body.data.items.find((j: { id: string }) => j.id === "test.keep");
    expect(plain.agentRuns).toBeUndefined();

    // 自定义可改名、可删;内置不可删
    expect((await api("PATCH", `/schedules/${id}`, { name: "夜间巡检" })).body.data.name).toBe("夜间巡检");
    expect((await api("DELETE", "/schedules/test.keep")).status).toBe(409);
    expect((await api("DELETE", `/schedules/${id}`)).status).toBe(200);
    expect((await api("GET", `/schedules/${id}/runs`)).status).toBe(404);
  });

  it("内置巡检默认关闭;触发条件不满足时计划触发记 skipped,不唤醒 Agent", async () => {
    await mod.start?.(ctx);
    await mod.stop?.();
    await sched.tick();
    const board = (await api("GET", "/schedules")).body.data;
    const checks = board.items.filter((j: { kind: string }) => j.kind === "agent_check");
    expect(checks.map((j: { id: string }) => j.id).sort()).toEqual([
      "check.downloads",
      "check.pending",
      "check.weekly",
    ]);
    expect(checks.every((j: { enabled: boolean }) => !j.enabled)).toBe(true);
    const backup = board.items.find((j: { id: string }) => j.id === "maintain.backup");
    expect(backup).toMatchObject({ available: false, enabled: false });
    expect((await api("PATCH", "/schedules/maintain.backup", { enabled: true })).status).toBe(409);

    // 上一个用例写入的巡检报告算未关闭事项,先关掉
    await sql`update decision set status = 'dismissed'`.execute(h.db);
    await api("PATCH", "/schedules/check.pending", { enabled: true });
    await sql`update scheduled_job set next_run_at = now() - interval '1 minute' where id = 'check.pending'`.execute(
      h.db,
    );
    const before = enqueued.length;
    await sched.tick();
    await sched.idle();
    const row = await job("check.pending");
    expect(row.last_status).toBe("skipped");
    expect(enqueued.length).toBe(before);
    await api("PATCH", "/schedules/check.pending", { enabled: false });
  });

  it("端点只接受控制台会话", async () => {
    const res = await bearer(h.app, DEV_KEY)("GET", "/schedules");
    expect(res.status).toBe(403);
  });
});