import { baseApi } from '../../../services/api/baseApi';
import type {
  AgentDashboardStats,
  AgentCustomer,
  CollectionEntry,
  CommissionSummary,
  AgentLoanRequest,
  AgentRoute,
  SmsLog,
  CollectionReceipt,
} from '../types/agentTypes';
import {
  MOCK_DASHBOARD_STATS,
  MOCK_CUSTOMERS,
  MOCK_TODAY_COLLECTIONS,
  MOCK_COMMISSION_SUMMARY,
  MOCK_LOAN_REQUESTS,
  MOCK_ROUTE,
  MOCK_SMS_LOGS,
} from '../utils/agentMockData';
import { generateReceiptNumber } from '../utils/agentFormatters';

const delay = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));

export const agentApi = baseApi.injectEndpoints({
  endpoints: (builder) => ({
    // ── Dashboard ──────────────────────────────────────────
    getAgentDashboard: builder.query<AgentDashboardStats, void>({
      queryFn: async () => {
        await delay(600);
        return { data: MOCK_DASHBOARD_STATS };
      },
      providesTags: ['AgentDashboard'],
    }),

    // ── Customers ──────────────────────────────────────────
    getAgentCustomers: builder.query<AgentCustomer[], void>({
      queryFn: async () => {
        await delay(500);
        return { data: MOCK_CUSTOMERS };
      },
      providesTags: ['AgentCustomers'],
    }),

    addAgentCustomer: builder.mutation<AgentCustomer, Partial<AgentCustomer>>({
      queryFn: async (customer) => {
        await delay(400);
        const newCustomer: AgentCustomer = {
          id: `c${Date.now()}`,
          name: customer.name ?? '',
          phone: customer.phone ?? '',
          email: customer.email,
          address: customer.address ?? '',
          city: customer.city ?? '',
          state: customer.state ?? '',
          pincode: customer.pincode ?? '',
          status: 'active',
          kyc: customer.kyc ?? {
            aadhaarNumber: '',
            panNumber: '',
            aadhaarVerified: false,
            panVerified: false,
            status: 'pending',
          },
          accounts: [],
          dueAmount: 0,
          totalCollected: 0,
          joinedDate: new Date().toISOString(),
        };
        return { data: newCustomer };
      },
      invalidatesTags: ['AgentCustomers', 'AgentDashboard'],
    }),

    updateAgentCustomer: builder.mutation<AgentCustomer, AgentCustomer>({
      queryFn: async (customer) => {
        await delay(300);
        return { data: customer };
      },
      invalidatesTags: ['AgentCustomers'],
    }),

    deleteAgentCustomer: builder.mutation<{ id: string }, string>({
      queryFn: async (id) => {
        await delay(300);
        return { data: { id } };
      },
      invalidatesTags: ['AgentCustomers', 'AgentDashboard'],
    }),

    // ── Collections ────────────────────────────────────────
    getTodayCollections: builder.query<CollectionEntry[], void>({
      queryFn: async () => {
        await delay(500);
        return { data: MOCK_TODAY_COLLECTIONS };
      },
      providesTags: ['AgentCollections'],
    }),

    submitCollection: builder.mutation<CollectionReceipt, { entryId: string; amount: number; mode: string }>({
      queryFn: async (params) => {
        await delay(500);
        const receipt: CollectionReceipt = {
          id: `rcp-${Date.now()}`,
          collectionId: params.entryId,
          customerName: 'Customer',
          customerPhone: '9876543000',
          accountNumber: 'CBS00000000',
          amount: params.amount,
          date: new Date().toISOString(),
          mode: params.mode as any,
          agentName: 'Rajesh Kumar',
          agentCode: 'AGT-2024-0147',
          referenceNumber: generateReceiptNumber(),
        };
        return { data: receipt };
      },
      invalidatesTags: ['AgentCollections', 'AgentDashboard'],
    }),

    getCollectionHistory: builder.query<CollectionEntry[], { from?: string; to?: string }>({
      queryFn: async () => {
        await delay(400);
        const history = MOCK_TODAY_COLLECTIONS.map(e => ({ ...e, collectedAt: '2026-05-17T10:00:00Z' }));
        return { data: history };
      },
    }),

    // ── Commission ─────────────────────────────────────────
    getCommissionSummary: builder.query<CommissionSummary, void>({
      queryFn: async () => {
        await delay(500);
        return { data: MOCK_COMMISSION_SUMMARY };
      },
      providesTags: ['AgentCommission'],
    }),

    // ── Loan Requests ──────────────────────────────────────
    getAgentLoanRequests: builder.query<AgentLoanRequest[], void>({
      queryFn: async () => {
        await delay(500);
        return { data: MOCK_LOAN_REQUESTS };
      },
      providesTags: ['AgentLoans'],
    }),

    submitAgentLoanRequest: builder.mutation<AgentLoanRequest, Partial<AgentLoanRequest>>({
      queryFn: async (req) => {
        await delay(600);
        const newRequest: AgentLoanRequest = {
          id: `lr-${Date.now()}`,
          customerId: req.customerId ?? '',
          customerName: req.customerName ?? '',
          customerPhone: req.customerPhone ?? '',
          category: req.category ?? 'Personal',
          amount: req.amount ?? 0,
          tenureMonths: req.tenureMonths ?? 12,
          purpose: req.purpose ?? '',
          monthlyIncome: req.monthlyIncome ?? 0,
          status: 'submitted',
          appliedDate: new Date().toISOString(),
          lastUpdated: new Date().toISOString(),
          documents: req.documents ?? [],
          timeline: [{ stage: 'Submitted', timestamp: new Date().toISOString(), active: true }],
        };
        return { data: newRequest };
      },
      invalidatesTags: ['AgentLoans', 'AgentDashboard'],
    }),

    // ── Route ──────────────────────────────────────────────
    getAgentRoute: builder.query<AgentRoute, void>({
      queryFn: async () => {
        await delay(400);
        return { data: MOCK_ROUTE };
      },
    }),

    // ── SMS ────────────────────────────────────────────────
    getSmsLogs: builder.query<SmsLog[], void>({
      queryFn: async () => {
        await delay(400);
        return { data: MOCK_SMS_LOGS };
      },
      providesTags: ['AgentSms'],
    }),

    sendSms: builder.mutation<SmsLog, { customerId: string; type: string; message: string }>({
      queryFn: async (params) => {
        await delay(500);
        const log: SmsLog = {
          id: `sms-${Date.now()}`,
          customerId: params.customerId,
          customerName: 'Customer',
          customerPhone: '9876543000',
          type: params.type as any,
          message: params.message,
          status: 'sent',
          sentAt: new Date().toISOString(),
          retryCount: 0,
        };
        return { data: log };
      },
      invalidatesTags: ['AgentSms'],
    }),

    // ── Account Opening ────────────────────────────────────
    submitAccountOpening: builder.mutation<{ accountId: string; accountNumber: string }, any>({
      queryFn: async () => {
        await delay(800);
        return {
          data: {
            accountId: `acc-${Date.now()}`,
            accountNumber: `CBS${Date.now().toString().slice(-8)}`,
          },
        };
      },
      invalidatesTags: ['AgentCustomers', 'AgentDashboard'],
    }),
  }),
});

export const {
  useGetAgentDashboardQuery,
  useGetAgentCustomersQuery,
  useAddAgentCustomerMutation,
  useUpdateAgentCustomerMutation,
  useDeleteAgentCustomerMutation,
  useGetTodayCollectionsQuery,
  useSubmitCollectionMutation,
  useGetCollectionHistoryQuery,
  useGetCommissionSummaryQuery,
  useGetAgentLoanRequestsQuery,
  useSubmitAgentLoanRequestMutation,
  useGetAgentRouteQuery,
  useGetSmsLogsQuery,
  useSendSmsMutation,
  useSubmitAccountOpeningMutation,
} = agentApi;