const Fastify = require("fastify");

const contractsRegistryRoutes = require("../../../src/routes/contractsRegistry");
const { AppError } = require("../../../src/utils/AppError");
const { currentDateString, parseDateOnlyString } = require("../../../src/utils/date");

const ACTOR_ID = "aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa";
const PROJECT_ID = "11111111-1111-4111-8111-111111111111";
const OWNER_ID = "22222222-2222-4222-8222-222222222222";
const MANAGER_ID = "33333333-3333-4333-8333-333333333333";
const MEMBER_ID = "44444444-4444-4444-8444-444444444444";
const DEPARTMENT_ID = "bbbbbbbb-bbbb-4bbb-8bbb-bbbbbbbbbbbb";

function buildFeatureFlagRecord(flagKey) {
  return {
    id: `flag-${flagKey}`,
    flag_key: flagKey,
    override_mode: "force_on",
    rollout_type: "global",
    department_ids: [],
    note: "unit-test",
    version: 1,
    created_at: new Date("2026-04-04T08:00:00.000Z"),
    created_by: null,
    updated_at: new Date("2026-04-04T08:00:00.000Z"),
    updated_by: null,
  };
}

function buildContractRow(overrides = {}) {
  return {
    id: "55555555-5555-4555-8555-555555555551",
    contract_no: "HT-2026-001",
    project_id: PROJECT_ID,
    contract_type: "service",
    counterparty_name: "测试客户",
    summary: "合同摘要",
    amount: "100000.00",
    currency: "CNY",
    signed_date: new Date("2026-03-01T00:00:00.000Z"),
    effective_date: new Date("2026-03-05T00:00:00.000Z"),
    expiry_date: new Date("2026-03-31T00:00:00.000Z"),
    confidentiality_level: "internal",
    archive_location: "/archive/contracts/001",
    offline_archive_no: "OFF-001",
    owner_employee_id: OWNER_ID,
    status: "active",
    created_at: new Date("2026-03-01T08:00:00.000Z"),
    updated_at: new Date("2026-04-01T08:00:00.000Z"),
    owner: {
      id: OWNER_ID,
      employee_no: "E001",
      name: "Owner",
    },
    project: {
      id: PROJECT_ID,
      project_no: "PRJ-001",
      name: "试点项目",
    },
    ...overrides,
  };
}

function mapSelectedRow(row, select) {
  if (!select) {
    return row;
  }

  return Object.entries(select).reduce((result, [key, enabled]) => {
    if (enabled === true) {
      result[key] = row[key];
    }
    return result;
  }, {});
}

function cloneRow(row) {
  return {
    ...row,
    owner: row.owner ? { ...row.owner } : null,
    project: row.project ? { ...row.project } : null,
  };
}

function buildStatefulPrisma(initialContracts) {
  const state = {
    contracts: initialContracts.map((item) => cloneRow(item)),
    audits: [],
  };

  const auditCreate = vi.fn(async ({ data }) => {
    state.audits.push(data);
    return data;
  });

  const contractRegistry = {
    findMany: vi.fn(async ({ where, select, include }) => {
      let rows = [...state.contracts];
      if (where?.contract_no?.startsWith) {
        rows = rows.filter((item) => item.contract_no.startsWith(where.contract_no.startsWith));
      }

      if (select) {
        return rows.map((item) => mapSelectedRow(item, select));
      }

      if (include) {
        return rows.map((item) => cloneRow(item));
      }

      return rows.map((item) => cloneRow(item));
    }),
    findUnique: vi.fn(async ({ where, select, include }) => {
      const row = state.contracts.find((item) => item.id === where.id);
      if (!row) {
        return null;
      }
      if (select) {
        return mapSelectedRow(row, select);
      }
      if (include) {
        return cloneRow(row);
      }
      return cloneRow(row);
    }),
    create: vi.fn(async ({ data, include }) => {
      const created = buildContractRow({
        id: `66666666-6666-4666-8666-${String(state.contracts.length + 1).padStart(12, "0")}`,
        contract_no: data.contract_no,
        project_id: data.project_id ?? null,
        contract_type: data.contract_type,
        counterparty_name: data.counterparty_name,
        summary: data.summary,
        amount: data.amount ?? null,
        currency: data.currency,
        signed_date: data.signed_date,
        effective_date: data.effective_date,
        expiry_date: data.expiry_date,
        confidentiality_level: data.confidentiality_level,
        archive_location: data.archive_location,
        offline_archive_no: data.offline_archive_no,
        owner_employee_id: data.owner_employee_id,
        status: data.status,
      });
      state.contracts.push(created);
      return include ? cloneRow(created) : created;
    }),
    update: vi.fn(async ({ where, data, include }) => {
      const index = state.contracts.findIndex((item) => item.id === where.id);
      if (index < 0) {
        return null;
      }
      state.contracts[index] = {
        ...state.contracts[index],
        ...data,
        updated_at: new Date("2026-04-04T09:30:00.000Z"),
      };
      return include ? cloneRow(state.contracts[index]) : state.contracts[index];
    }),
  };

  return {
    state,
    prisma: {
      featureFlag: {
        findUnique: vi.fn().mockImplementation(async ({ where }) => buildFeatureFlagRecord(where.flag_key)),
      },
      auditLog: {
        create: auditCreate,
      },
      contractRegistry,
      $transaction: async (callback) =>
        callback({
          auditLog: { create: auditCreate },
          contractRegistry,
        }),
    },
    auditCreate,
  };
}

async function buildApp(options = {}) {
  const app = Fastify();
  const actor = options.actor ?? {
    id: ACTOR_ID,
    department_id: DEPARTMENT_ID,
    permissionCodes: ["project.manage"],
  };
  const prisma =
    options.prisma ??
    (() => {
      const fallback = {
        featureFlag: {
          findUnique: vi.fn().mockImplementation(async ({ where }) => buildFeatureFlagRecord(where.flag_key)),
        },
        auditLog: {
          create: vi.fn().mockResolvedValue({}),
        },
        contractRegistry: {
          findMany: vi.fn().mockResolvedValue([]),
          findUnique: vi.fn().mockResolvedValue(null),
          create: vi.fn().mockResolvedValue(buildContractRow()),
          update: vi.fn().mockResolvedValue(buildContractRow()),
        },
      };
      fallback.$transaction = async (callback) => callback(fallback);
      return fallback;
    })();

  app.decorate("authenticate", async (request) => {
    request.employee = actor;
  });
  app.decorate("hasPermission", (employee, permissionCode) => {
    const permissionCodes = employee.permissionCodes ?? [];
    return permissionCodes.includes("*") || permissionCodes.includes(permissionCode);
  });
  app.decorate("config", {
    appTimezone: "Asia/Shanghai",
    projectLinkingEnabled: true,
  });
  app.decorate("prisma", prisma);
  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(contractsRegistryRoutes, { prefix: "/api" });
  return { app, prisma };
}

describe("contracts registry routes", () => {
  it("lists contracts with expired filtering and computed status", async () => {
    const contractFindMany = vi.fn().mockResolvedValue([buildContractRow()]);
    const { app } = await buildApp({
      prisma: (() => {
        const prisma = {
        featureFlag: {
          findUnique: vi.fn().mockImplementation(async ({ where }) => buildFeatureFlagRecord(where.flag_key)),
        },
        auditLog: { create: vi.fn().mockResolvedValue({}) },
        contractRegistry: {
          findMany: contractFindMany,
          findUnique: vi.fn().mockResolvedValue(null),
          create: vi.fn(),
          update: vi.fn(),
        },
        };
        prisma.$transaction = async (callback) => callback(prisma);
        return prisma;
      })(),
    });

    const today = parseDateOnlyString(currentDateString("Asia/Shanghai"));
    const response = await app.inject({
      method: "GET",
      url: `/api/contracts-registry?status=expired&contractType=service&counterpartyName=%E6%B5%8B%E8%AF%95&expiryDateFrom=2026-03-01&expiryDateTo=2026-03-31`,
    });

    expect(response.statusCode).toBe(200);
    const payload = response.json();
    expect(payload.data.items[0]).toEqual(
      expect.objectContaining({
        status: "expired",
        persistedStatus: "active",
        contractType: "service",
        amount: "100000.00",
      }),
    );
    expect(contractFindMany).toHaveBeenCalledWith(
      expect.objectContaining({
        where: {
          AND: expect.arrayContaining([
            expect.objectContaining({ status: "active", expiry_date: { lt: today } }),
            expect.objectContaining({ contract_type: "service" }),
            expect.objectContaining({
              counterparty_name: expect.objectContaining({ contains: "测试", mode: "insensitive" }),
            }),
            expect.objectContaining({
              expiry_date: expect.objectContaining({
                gte: new Date("2026-03-01T00:00:00.000Z"),
                lte: new Date("2026-03-31T00:00:00.000Z"),
              }),
            }),
          ]),
        },
      }),
    );

    await app.close();
  });

  it("rejects invalid expiry date range", async () => {
    const { app } = await buildApp();
    const response = await app.inject({
      method: "GET",
      url: "/api/contracts-registry?expiryDateFrom=2026-04-10&expiryDateTo=2026-04-01",
    });

    expect(response.statusCode).toBe(400);
    expect(response.json().error).toEqual(
      expect.objectContaining({
        code: "VALID_001",
        details: expect.objectContaining({
          expiryDateTo: "must_be_after_or_equal_expiryDateFrom",
        }),
      }),
    );

    await app.close();
  });

  it("returns expiring contracts within the default window", async () => {
    const contractFindMany = vi.fn().mockResolvedValue([
      buildContractRow({
        id: "contract-2",
        contract_no: "HT-2026-002",
        expiry_date: new Date("2026-04-10T00:00:00.000Z"),
      }),
    ]);
    const { app } = await buildApp({
      prisma: (() => {
        const prisma = {
        featureFlag: {
          findUnique: vi.fn().mockImplementation(async ({ where }) => buildFeatureFlagRecord(where.flag_key)),
        },
        auditLog: { create: vi.fn().mockResolvedValue({}) },
        contractRegistry: {
          findMany: contractFindMany,
          findUnique: vi.fn().mockResolvedValue(null),
          create: vi.fn(),
          update: vi.fn(),
        },
        };
        prisma.$transaction = async (callback) => callback(prisma);
        return prisma;
      })(),
    });

    const today = parseDateOnlyString(currentDateString("Asia/Shanghai"));
    const end = new Date(today.getTime());
    end.setUTCDate(end.getUTCDate() + 30);

    const response = await app.inject({
      method: "GET",
      url: "/api/contracts-registry/expiring",
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data).toEqual(
      expect.objectContaining({
        days: 30,
        total: 1,
      }),
    );
    expect(contractFindMany).toHaveBeenCalledWith(
      expect.objectContaining({
        where: {
          AND: expect.arrayContaining([
            { status: "active" },
            expect.objectContaining({
              expiry_date: expect.objectContaining({
                gte: today,
                lte: end,
              }),
            }),
          ]),
        },
      }),
    );

    await app.close();
  });

  it("renews an active contract into the next draft revision and archives the source", async () => {
    const stateful = buildStatefulPrisma([
      buildContractRow({
        id: "55555555-5555-4555-8555-555555555551",
        contract_no: "HT-2026-001",
        status: "active",
      }),
      buildContractRow({
        id: "55555555-5555-4555-8555-555555555552",
        contract_no: "HT-2026-001-R1",
        status: "archived",
      }),
    ]);
    const { app } = await buildApp({ prisma: stateful.prisma });

    const response = await app.inject({
      method: "POST",
      url: "/api/contracts-registry/55555555-5555-4555-8555-555555555551/renew",
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data).toEqual(
      expect.objectContaining({
        item: expect.objectContaining({
          contractNo: "HT-2026-001-R2",
          status: "draft",
          persistedStatus: "draft",
        }),
        sourceItem: expect.objectContaining({
          contractNo: "HT-2026-001",
          status: "archived",
          persistedStatus: "archived",
        }),
      }),
    );
    expect(stateful.state.contracts.find((item) => item.id === "55555555-5555-4555-8555-555555555551")?.status).toBe("archived");
    expect(
      stateful.state.contracts.some((item) => item.contract_no === "HT-2026-001-R2" && item.status === "draft"),
    ).toBe(true);
    expect(stateful.state.audits.map((item) => item.action)).toEqual(
      expect.arrayContaining(["CONTRACT_REGISTRY_RENEWED", "CONTRACT_REGISTRY_STATUS_CHANGED"]),
    );

    await app.close();
  });

  it("rejects renewing a draft contract", async () => {
    const stateful = buildStatefulPrisma([
      buildContractRow({
        id: "55555555-5555-4555-8555-555555555553",
        contract_no: "HT-2026-003",
        status: "draft",
      }),
    ]);
    const { app } = await buildApp({ prisma: stateful.prisma });

    const response = await app.inject({
      method: "POST",
      url: "/api/contracts-registry/55555555-5555-4555-8555-555555555553/renew",
    });

    expect(response.statusCode).toBe(409);
    expect(response.json().error).toEqual(
      expect.objectContaining({
        code: "VALID_001",
        details: expect.objectContaining({ status: "renew_not_allowed" }),
      }),
    );

    await app.close();
  });
});