const Fastify = require("fastify");

const { AppError } = require("../../../src/utils/AppError");
const reimbursementRoutes = require("../../../src/routes/reimbursements");

const REIMBURSEMENT_ID = "11111111-1111-4111-8111-111111111111";
const OWNER_ID = "22222222-2222-4222-8222-222222222222";
const SUBMITTER_ID = "33333333-3333-4333-8333-333333333333";
const DEPARTMENT_ID = "44444444-4444-4444-8444-444444444444";
const PENDING_INSTANCE_ID = "55555555-5555-4555-8555-555555555555";

function buildReimbursementRecord(overrides = {}) {
  return {
    id: REIMBURSEMENT_ID,
    form_number: "BX20260410001",
    submitter_id: SUBMITTER_ID,
    owner_id: OWNER_ID,
    department_id: DEPARTMENT_ID,
    created_at: new Date("2026-04-10T09:00:00.000Z"),
    reimbursement_date: new Date("2026-04-10T00:00:00.000Z"),
    total_amount: "188.80",
    status: "reviewing",
    description: "客户拜访报销",
    project_id: null,
    linked_travel_request_id: null,
    department: { id: DEPARTMENT_ID, name: "华东销售部" },
    project: null,
    travel_request: null,
    owner: { id: OWNER_ID, employee_no: "E1001", name: "张三" },
    submitter: { id: SUBMITTER_ID, employee_no: "E1002", name: "李四" },
    items: [
      {
        id: "item-1",
        expense_type_id: "expense-type-1",
        expense_date: new Date("2026-04-09T00:00:00.000Z"),
        amount: "188.80",
        description: "客户打车",
        expense_type: {
          id: "expense-type-1",
          code: "travel_taxi",
          name: "打车费",
          category: "travel",
          enabled: true,
        },
      },
    ],
    attachments: [],
    invoice_pool_items: [
      {
        id: "invoice-1",
        status: "bound",
        invoice_code: "FP001",
        invoice_number: "0001",
        invoice_date: new Date("2026-04-09T00:00:00.000Z"),
        seller_name: "上海供应商",
        total_amount: "188.80",
        original_name: "receipt.pdf",
        linked_item_id: "item-1",
      },
    ],
    workflow_instances: [
      {
        id: PENDING_INSTANCE_ID,
        current_step_id: "finance_approve",
        current_status: "pending",
        context_data: {
          workflow_steps_snapshot: [
            { id: "manager_approve", name: "主管审批" },
            { id: "finance_approve", name: "财务审批" },
          ],
        },
        workflow_definition: {
          definition_json: {
            steps: [
              { id: "manager_approve", name: "主管审批" },
              { id: "finance_approve", name: "财务审批" },
            ],
          },
        },
        workflow_tasks: [
          {
            id: "task-1",
            step_name: "财务审批",
            assignee_id: "finance-1",
            assignee_role: "finance",
          },
        ],
      },
    ],
    ...overrides,
  };
}

async function buildApp({
  employeeId = OWNER_ID,
  permissionCodes = ["expense.view_own"],
  reimbursement = buildReimbursementRecord(),
  latestWorkflowInstance = {
    id: PENDING_INSTANCE_ID,
    current_step_id: "finance_approve",
    created_at: new Date("2026-04-10T10:00:00.000Z"),
    context_data: {
      workflow_steps_snapshot: [
        { id: "manager_approve", name: "主管审批" },
        { id: "finance_approve", name: "财务审批" },
      ],
    },
    workflow_definition: {
      definition_json: {
        steps: [
          { id: "manager_approve", name: "主管审批" },
          { id: "finance_approve", name: "财务审批" },
        ],
      },
    },
  },
  workflowHistoryRows = [
    {
      id: "history-start",
      action: "start",
      comment: null,
      payload: { step_id: "manager_approve" },
      created_at: new Date("2026-04-10T10:00:00.000Z"),
      actor: { name: "李四" },
      workflow_task: { step_name: "主管审批" },
    },
    {
      id: "history-approve",
      action: "approve",
      comment: "同意",
      payload: { from_step_id: "manager_approve", to_step_id: "finance_approve" },
      created_at: new Date("2026-04-10T12:00:00.000Z"),
      actor: { name: "王经理" },
      workflow_task: { step_name: "主管审批" },
    },
    {
      id: "history-skip",
      action: "skip",
      comment: null,
      payload: { step_id: "ceo_approve" },
      created_at: new Date("2026-04-10T12:01:00.000Z"),
      actor: { name: "系统" },
      workflow_task: null,
    },
  ],
} = {}) {
  const app = Fastify();
  const prisma = {
    reimbursementForm: {
      findUnique: vi.fn(async ({ where }) => {
        if (where.id !== REIMBURSEMENT_ID) {
          return null;
        }
        return reimbursement;
      }),
    },
    workflowInstance: {
      findFirst: vi.fn(async () => latestWorkflowInstance),
    },
    workflowHistory: {
      findMany: vi.fn(async () => workflowHistoryRows),
    },
    entityRiskFlag: {
      findMany: vi.fn(async () => []),
    },
    budgetPool: {
      findMany: vi.fn(async () => []),
    },
  };

  app.decorate("prisma", prisma);
  app.decorate("config", {
    budgetControlMode: "warn",
    appTimezone: "Asia/Shanghai",
  });
  app.decorate("authenticate", async (request) => {
    if (!request.headers.authorization) {
      throw new AppError({ code: "AUTH_001", message: "未登录", statusCode: 401 });
    }

    request.employee = {
      id: employeeId,
      permissionCodes,
      roleCodes: [],
      department_id: DEPARTMENT_ID,
    };
  });
  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.decorate("assertEntityPermission", () => {});
  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(reimbursementRoutes, { prefix: "/api" });
  return { app, prisma };
}

describe("GET /api/reimbursements/:id detail enhancements", () => {
  it("returns department, submittedAt, expanded invoices and printable approvalHistory", async () => {
    const { app } = await buildApp();

    const response = await app.inject({
      method: "GET",
      url: `/api/reimbursements/${REIMBURSEMENT_ID}`,
      headers: { authorization: "Bearer test" },
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data).toMatchObject({
      department: {
        id: DEPARTMENT_ID,
        name: "华东销售部",
      },
      createdAt: "2026-04-10T09:00:00.000Z",
      submittedAt: "2026-04-10T10:00:00.000Z",
      invoices: [
        {
          id: "invoice-1",
          invoiceCode: "FP001",
          invoiceNumber: "0001",
          invoiceDate: "2026-04-09",
          sellerName: "上海供应商",
          totalAmount: "188.80",
          originalName: "receipt.pdf",
          linkedItemId: "item-1",
        },
      ],
      approvalHistory: [
        {
          id: "history-start",
          stepName: "主管审批",
          action: "start",
          actorName: "李四",
          comment: null,
          createdAt: "2026-04-10T10:00:00.000Z",
        },
        {
          id: "history-approve",
          stepName: "主管审批",
          action: "approve",
          actorName: "王经理",
          comment: "同意",
          createdAt: "2026-04-10T12:00:00.000Z",
        },
      ],
    });
    expect(response.json().data.workflowProgress).toMatchObject({
      currentStepIndex: 1,
      totalSteps: 2,
    });

    await app.close();
  });

  it("returns null submittedAt and empty approvalHistory when reimbursement has never been submitted", async () => {
    const reimbursement = buildReimbursementRecord({
      status: "draft",
      workflow_instances: [],
    });
    const { app } = await buildApp({
      reimbursement,
      latestWorkflowInstance: null,
      workflowHistoryRows: [],
    });

    const response = await app.inject({
      method: "GET",
      url: `/api/reimbursements/${REIMBURSEMENT_ID}`,
      headers: { authorization: "Bearer test" },
    });

    expect(response.statusCode).toBe(200);
    expect(response.json().data.submittedAt).toBe(null);
    expect(response.json().data.approvalHistory).toEqual([]);

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