const Fastify = require("fastify");

const { AppError } = require("../../../src/utils/AppError");
const { FEATURE_FLAG_KEYS } = require("../../../src/services/featureFlags");
const { registerInvoiceVerificationRoutes } = require("../../../src/routes/invoicePool/verification");

const INVOICE_ID = "11111111-1111-4111-8111-111111111111";
const RECORD_ID = "22222222-2222-4222-8222-222222222222";
const RETRY_RECORD_ID = "33333333-3333-4333-8333-333333333333";
const EMPLOYEE_ID = "44444444-4444-4444-8444-444444444444";
const DEPARTMENT_ID = "dept-finance";

function pickSelect(source, select) {
  if (!select) {
    return { ...source };
  }

  return Object.fromEntries(
    Object.entries(select)
      .filter(([, enabled]) => Boolean(enabled))
      .map(([key]) => [key, source[key]]),
  );
}

function buildFlagRecord({ overrideMode = "force_on", rolloutType = "global", departmentIds = [] } = {}) {
  const now = new Date("2026-05-28T00:00:00.000Z");
  return {
    id: "flag-invoice-verification",
    flag_key: FEATURE_FLAG_KEYS.invoiceVerification,
    override_mode: overrideMode,
    rollout_type: rolloutType,
    department_ids: departmentIds,
    note: "unit-test",
    version: 1,
    created_at: now,
    created_by: null,
    updated_at: now,
    updated_by: null,
  };
}

function buildInvoice(overrides = {}) {
  return {
    id: INVOICE_ID,
    status: "available",
    invoice_code: "0440026",
    invoice_number: "00012890",
    total_amount: "1060.00",
    remarks: "route test",
    owner_employee_id: EMPLOYEE_ID,
    uploaded_by_employee_id: EMPLOYEE_ID,
    owner_employee: {
      id: EMPLOYEE_ID,
      department_id: DEPARTMENT_ID,
    },
    linked_reimbursement: null,
    ...overrides,
  };
}

function buildVerificationRecord(overrides = {}) {
  return {
    id: RECORD_ID,
    invoice_id: INVOICE_ID,
    provider: "mock",
    status: "failed",
    result_code: "invoice_mismatch",
    result_message: "invoice metadata mismatch",
    error_code: null,
    error_message: null,
    duration_ms: 120,
    requested_by: EMPLOYEE_ID,
    requested_at: new Date("2026-05-28T08:00:00.000Z"),
    completed_at: new Date("2026-05-28T08:00:10.000Z"),
    retry_of_id: null,
    attempts: 1,
    ...overrides,
  };
}

function buildQueryRawHandler(state) {
  return vi.fn(async (strings, ...values) => {
    const sql = Array.isArray(strings) ? strings.join("?") : String(strings);
    const targetId = values[0] ? String(values[0]) : null;

    if (sql.includes('FROM "invoice_pool"')) {
      if (!state.invoice || (targetId && state.invoice.id !== targetId)) {
        return [];
      }
      return [{ id: state.invoice.id }];
    }

    return [];
  });
}

function buildPrisma(options = {}) {
  const state = {
    invoice: options.invoice === null ? null : buildInvoice(options.invoice),
    latestRecord: options.latestRecord ?? null,
    records: options.records ?? [],
    flagRecord: options.flagRecord ?? buildFlagRecord(),
  };

  const tx = {
    $queryRaw: buildQueryRawHandler(state),
    featureFlag: {
      findUnique: vi.fn(async () => state.flagRecord),
    },
    invoicePool: {
      findUnique: vi.fn(async ({ where, select }) => {
        if (!state.invoice || where.id !== state.invoice.id) {
          return null;
        }
        return pickSelect(state.invoice, select);
      }),
    },
    invoiceVerificationRecord: {
      findFirst: vi.fn(async () => state.latestRecord),
      findMany: vi.fn(async () => state.records),
      create: vi.fn(async ({ data }) => {
        const created = {
          id: data.retry_of_id ? RETRY_RECORD_ID : RECORD_ID,
          ...data,
          created_at: new Date("2026-05-28T08:05:00.000Z"),
        };
        state.latestRecord = created;
        state.records = [created, ...state.records];
        return pickSelect(created, { id: true });
      }),
    },
    auditLog: {
      create: vi.fn(async () => ({ id: "audit-1" })),
    },
  };

  const prisma = {
    ...tx,
    $transaction: vi.fn(async (callback) => callback(tx)),
  };

  return { prisma, tx, state };
}

async function buildApp(options = {}) {
  const { prisma, tx, state } = buildPrisma(options);
  const app = Fastify();
  const permissionCodes = options.permissionCodes ?? ["invoice.verify", "invoice.manage"];

  app.decorate("prisma", prisma);
  app.decorate("boss", {
    send: vi.fn(async () => ({ id: "job-invoice-verify-1" })),
  });
  app.decorate("config", {
    invoiceVerificationEnabled: options.invoiceVerificationEnabled ?? true,
    verificationProvider: options.verificationProvider ?? "mock",
    verificationRetryCooldownSeconds: options.verificationRetryCooldownSeconds ?? 60,
    verificationMaxAttempts: options.verificationMaxAttempts ?? 3,
    jobDriver: "pgboss",
  });
  app.decorate("authenticate", async (request) => {
    if (!request.headers.authorization) {
      throw new AppError({ code: "AUTH_001", message: "未登录", statusCode: 401 });
    }
    request.employee = {
      id: EMPLOYEE_ID,
      department_id: DEPARTMENT_ID,
      roleCodes: ["finance"],
      permissionCodes,
    };
  });
  app.decorate(
    "hasPermission",
    (employee, permissionCode) =>
      (employee?.permissionCodes ?? []).includes("*") ||
      (employee?.permissionCodes ?? []).includes(permissionCode),
  );
  app.decorate("requirePermission", (permissionCode) => async (request) => {
    await app.authenticate(request);
    if (!app.hasPermission(request.employee, permissionCode)) {
      throw new AppError({ code: "PERM_001", message: "无权限", statusCode: 403 });
    }
  });
  app.setErrorHandler((error, request, reply) => {
    if (error instanceof AppError) {
      return reply.status(error.statusCode).send({
        requestId: request.id,
        error: {
          code: error.code,
          message: error.message,
          details: error.details ?? {},
        },
      });
    }

    return reply.status(500).send({
      requestId: request.id,
      error: { code: "SYS_001", message: "服务器内部错误", details: {} },
    });
  });

  await app.register(registerInvoiceVerificationRoutes, { prefix: "/api" });
  return { app, prisma, tx, state };
}

describe("invoicePool verification routes", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("creates a pending verification request and queues a job", async () => {
    const { app, tx } = await buildApp();

    try {
      const response = await app.inject({
        method: "POST",
        url: `/api/invoice-pool/${INVOICE_ID}/verify`,
        headers: { authorization: "Bearer test" },
      });

      expect(response.statusCode).toBe(200);
      expect(response.json().data).toEqual({
        invoiceId: INVOICE_ID,
        verificationId: RECORD_ID,
        provider: "mock",
        triggerMode: "queued",
      });
      expect(tx.invoiceVerificationRecord.create).toHaveBeenCalledWith({
        data: expect.objectContaining({
          invoice_id: INVOICE_ID,
          provider: "mock",
          status: "pending",
          requested_by: EMPLOYEE_ID,
          attempts: 1,
          request_payload: expect.objectContaining({
            invoiceCode: "0440026",
            invoiceNumber: "00012890",
            departmentId: DEPARTMENT_ID,
            featureFlagReason: "flag_force_on_global",
          }),
        }),
        select: { id: true },
      });
      expect(tx.auditLog.create).toHaveBeenCalledWith({
        data: expect.objectContaining({
          actor_id: EMPLOYEE_ID,
          action: "INVOICE_VERIFICATION_REQUESTED",
          target_type: "invoice_pool",
          target_id: INVOICE_ID,
        }),
      });
      expect(app.boss.send).toHaveBeenCalledWith("invoice.verify", { recordId: RECORD_ID });
    } finally {
      await app.close();
    }
  });

  it("blocks trigger when invoice verification is disabled by env gate", async () => {
    const { app, tx } = await buildApp({ invoiceVerificationEnabled: false });

    try {
      const response = await app.inject({
        method: "POST",
        url: `/api/invoice-pool/${INVOICE_ID}/verify`,
        headers: { authorization: "Bearer test" },
      });

      expect(response.statusCode).toBe(409);
      expect(response.json().error).toMatchObject({
        code: "VALID_001",
        details: { verification: "disabled", featureFlag: "env_hard_off" },
      });
      expect(tx.invoiceVerificationRecord.create).not.toHaveBeenCalled();
      expect(app.boss.send).not.toHaveBeenCalled();
    } finally {
      await app.close();
    }
  });

  it("blocks trigger when a pending verification already exists", async () => {
    const { app, tx } = await buildApp({
      latestRecord: buildVerificationRecord({ status: "pending" }),
    });

    try {
      const response = await app.inject({
        method: "POST",
        url: `/api/invoice-pool/${INVOICE_ID}/verify`,
        headers: { authorization: "Bearer test" },
      });

      expect(response.statusCode).toBe(409);
      expect(response.json().error.details).toEqual({ verification: "already_pending" });
      expect(tx.invoiceVerificationRecord.create).not.toHaveBeenCalled();
    } finally {
      await app.close();
    }
  });

  it("blocks trigger when retry cooldown has not elapsed", async () => {
    vi.setSystemTime(new Date("2026-05-28T08:00:20.000Z"));
    const { app, tx } = await buildApp({
      latestRecord: buildVerificationRecord({
        status: "failed",
        requested_at: new Date("2026-05-28T08:00:00.000Z"),
      }),
      verificationRetryCooldownSeconds: 60,
    });

    try {
      const response = await app.inject({
        method: "POST",
        url: `/api/invoice-pool/${INVOICE_ID}/verify`,
        headers: { authorization: "Bearer test" },
      });

      expect(response.statusCode).toBe(409);
      expect(response.json().error.details).toEqual({ verification: "too_frequent", reasonCode: "invoice_verification.too_frequent" });
      expect(tx.invoiceVerificationRecord.create).not.toHaveBeenCalled();
    } finally {
      vi.useRealTimers();
      await app.close();
    }
  });

  it("lists verification records for authorized finance user", async () => {
    const record = buildVerificationRecord();
    const { app, tx } = await buildApp({ records: [record] });

    try {
      const response = await app.inject({
        method: "GET",
        url: `/api/invoice-pool/${INVOICE_ID}/verification?limit=1`,
        headers: { authorization: "Bearer test" },
      });

      expect(response.statusCode).toBe(200);
      expect(response.json().data).toMatchObject({
        invoiceId: INVOICE_ID,
        items: [
          {
            id: RECORD_ID,
            provider: "mock",
            status: "failed",
            attempts: 1,
            resultMessage: "invoice metadata mismatch",
          },
        ],
      });
      expect(tx.invoiceVerificationRecord.findMany).toHaveBeenCalledWith({
        where: { invoice_id: INVOICE_ID },
        orderBy: { created_at: "desc" },
        take: 1,
      });
    } finally {
      await app.close();
    }
  });

  it("creates retry record with incremented attempts and queues a job", async () => {
    vi.setSystemTime(new Date("2026-05-28T08:05:00.000Z"));
    const { app, tx } = await buildApp({
      latestRecord: buildVerificationRecord({
        id: RECORD_ID,
        status: "failed",
        attempts: 1,
        requested_at: new Date("2026-05-28T08:00:00.000Z"),
      }),
      verificationRetryCooldownSeconds: 60,
    });

    try {
      const response = await app.inject({
        method: "POST",
        url: `/api/invoice-pool/${INVOICE_ID}/verification/retry`,
        headers: { authorization: "Bearer test" },
      });

      expect(response.statusCode).toBe(200);
      expect(response.json().data).toEqual({
        invoiceId: INVOICE_ID,
        verificationId: RETRY_RECORD_ID,
        status: "pending",
      });
      expect(tx.invoiceVerificationRecord.create).toHaveBeenCalledWith({
        data: expect.objectContaining({
          invoice_id: INVOICE_ID,
          provider: "mock",
          status: "pending",
          retry_of_id: RECORD_ID,
          attempts: 2,
          requested_by: EMPLOYEE_ID,
          request_payload: expect.objectContaining({
            retryOfId: RECORD_ID,
            departmentId: DEPARTMENT_ID,
            featureFlagReason: "flag_force_on_global",
          }),
        }),
        select: { id: true },
      });
      expect(tx.auditLog.create).toHaveBeenCalledWith({
        data: expect.objectContaining({
          actor_id: EMPLOYEE_ID,
          action: "INVOICE_VERIFICATION_RETRIED",
          target_type: "invoice_pool",
          target_id: INVOICE_ID,
        }),
      });
      expect(app.boss.send).toHaveBeenCalledWith("invoice.verify", { recordId: RETRY_RECORD_ID });
    } finally {
      vi.useRealTimers();
      await app.close();
    }
  });

  it("blocks retry after max attempts are exceeded", async () => {
    vi.setSystemTime(new Date("2026-05-28T08:05:00.000Z"));
    const { app, tx } = await buildApp({
      latestRecord: buildVerificationRecord({
        status: "error",
        attempts: 3,
        requested_at: new Date("2026-05-28T08:00:00.000Z"),
      }),
      verificationMaxAttempts: 3,
      verificationRetryCooldownSeconds: 60,
    });

    try {
      const response = await app.inject({
        method: "POST",
        url: `/api/invoice-pool/${INVOICE_ID}/verification/retry`,
        headers: { authorization: "Bearer test" },
      });

      expect(response.statusCode).toBe(409);
      expect(response.json().error.details).toEqual({ verification: "attempts_exceeded", reasonCode: "invoice_verification.attempts_exceeded" });
      expect(tx.invoiceVerificationRecord.create).not.toHaveBeenCalled();
      expect(app.boss.send).not.toHaveBeenCalled();
    } finally {
      vi.useRealTimers();
      await app.close();
    }
  });
});