import {
  EmployeeTaxRelief,
  CreateEmployeeTaxReliefPayload,
  UpdateEmployeeTaxReliefPayload,
} from '@/interface/EmployeeTaxRelief';
import { RejectedActionPayload, ServerErrorResponse } from '@/interface/Shared';
import { apiDelete, apiGet, apiPost, apiPut } from '@/services/api/api';
import Helpers from '@/utilities/Helpers';
import { createAsyncThunk, createSlice, Draft, PayloadAction } from '@reduxjs/toolkit';
import { message } from 'antd';
import axios, { AxiosResponse } from 'axios';
import { EmployeeTaxReliefsActions } from './actionTypes';

interface EmployeeTaxReliefsState {
  employeeTaxReliefs: EmployeeTaxRelief[];
  loading: boolean;
  error: string | null;
}

const initialState: EmployeeTaxReliefsState = {
  employeeTaxReliefs: [],
  loading: false,
  error: null,
};

export const fetchEmployeeTaxReliefs = createAsyncThunk(
  EmployeeTaxReliefsActions.FETCH_TAX_RELIEFS_REQUEST,
  async (params?: { employee_id?: string; tax_year?: number; tax_relief_category_id?: string; search?: string }) => {
    const queryParams = new URLSearchParams();
    if (params?.employee_id) queryParams.append('employee_id', params.employee_id);
    if (params?.tax_year) queryParams.append('tax_year', String(params.tax_year));
    if (params?.tax_relief_category_id)
      queryParams.append('tax_relief_category_id', params.tax_relief_category_id);
    if (params?.search) queryParams.append('search', params.search);
    const query = queryParams.toString() ? `?${queryParams.toString()}` : '';
    const response = (await apiGet(
      `/payroll/tax-reliefs${query}`,
    )) as AxiosResponse<EmployeeTaxRelief[]>;
    return response.data;
  },
);

export const createEmployeeTaxRelief = createAsyncThunk(
  EmployeeTaxReliefsActions.CREATE_TAX_RELIEF_REQUEST,
  async (payload: CreateEmployeeTaxReliefPayload, { rejectWithValue }) => {
    try {
      const { employee_id, ...data } = payload;
      const response = (await apiPost(
        `/payroll/employees/${employee_id}/tax-reliefs`,
        data,
      )) as AxiosResponse<{ data: EmployeeTaxRelief }>;
      return response.data.data;
    } catch (error) {
      if (axios.isAxiosError(error) && error.response) {
        return rejectWithValue(error.response.data as ServerErrorResponse);
      }
      throw error;
    }
  },
);

export const updateEmployeeTaxRelief = createAsyncThunk(
  EmployeeTaxReliefsActions.UPDATE_TAX_RELIEF_REQUEST,
  async (payload: UpdateEmployeeTaxReliefPayload, { rejectWithValue }) => {
    try {
      const { id, ...data } = payload;
      const response = (await apiPut(
        `/payroll/tax-reliefs/${id}`,
        data,
      )) as AxiosResponse<{ data: EmployeeTaxRelief }>;
      return response.data.data;
    } catch (error) {
      if (axios.isAxiosError(error) && error.response) {
        return rejectWithValue(error.response.data as ServerErrorResponse);
      }
      throw error;
    }
  },
);

export const deleteEmployeeTaxRelief = createAsyncThunk(
  EmployeeTaxReliefsActions.DELETE_TAX_RELIEF_REQUEST,
  async (id: string, { rejectWithValue }) => {
    try {
      await apiDelete(`/payroll/tax-reliefs/${id}`);
      return id;
    } catch (error) {
      if (axios.isAxiosError(error) && error.response) {
        return rejectWithValue(error.response.data as ServerErrorResponse);
      }
      throw error;
    }
  },
);

export const EmployeeTaxReliefsSlice = createSlice({
  name: 'employeeTaxReliefs',
  initialState,
  reducers: {
    clearEmployeeTaxReliefs(state) {
      state.employeeTaxReliefs = [];
    },
  },
  extraReducers(builder) {
    builder
      .addCase(fetchEmployeeTaxReliefs.pending, (state: Draft<EmployeeTaxReliefsState>) => {
        state.loading = true;
        state.error = null;
      })
      .addCase(
        fetchEmployeeTaxReliefs.fulfilled,
        (
          state: Draft<EmployeeTaxReliefsState>,
          action: PayloadAction<EmployeeTaxRelief[]>,
        ) => {
          state.employeeTaxReliefs = action.payload;
          state.loading = false;
          state.error = null;
        },
      )
      .addCase(fetchEmployeeTaxReliefs.rejected, (state: Draft<EmployeeTaxReliefsState>, action: RejectedActionPayload) => {
        state.loading = false;
        state.error = 'Failed to load tax relief assignments';
        message.error(Helpers.handleServerError(action.payload), 8);
      });

    builder
      .addCase(createEmployeeTaxRelief.pending, (state: Draft<EmployeeTaxReliefsState>) => {
        state.loading = true;
        state.error = null;
      })
      .addCase(
        createEmployeeTaxRelief.fulfilled,
        (state: Draft<EmployeeTaxReliefsState>, action: PayloadAction<EmployeeTaxRelief>) => {
          state.employeeTaxReliefs.push(action.payload);
          state.loading = false;
          state.error = null;
          message.success('Tax relief assigned successfully');
        },
      )
      .addCase(
        createEmployeeTaxRelief.rejected,
        (state: Draft<EmployeeTaxReliefsState>, action: RejectedActionPayload) => {
          state.loading = false;
          state.error = Helpers.handleServerError(action.payload);
          message.error(Helpers.handleServerError(action.payload), 10);
        },
      );

    builder
      .addCase(updateEmployeeTaxRelief.pending, (state: Draft<EmployeeTaxReliefsState>) => {
        state.loading = true;
        state.error = null;
      })
      .addCase(
        updateEmployeeTaxRelief.fulfilled,
        (state: Draft<EmployeeTaxReliefsState>, action: PayloadAction<EmployeeTaxRelief>) => {
          const index = state.employeeTaxReliefs.findIndex((r) => r.id === action.payload.id);
          if (index !== -1) state.employeeTaxReliefs[index] = action.payload;
          state.loading = false;
          state.error = null;
          message.success('Tax relief updated successfully');
        },
      )
      .addCase(
        updateEmployeeTaxRelief.rejected,
        (state: Draft<EmployeeTaxReliefsState>, action: RejectedActionPayload) => {
          state.loading = false;
          state.error = Helpers.handleServerError(action.payload);
          message.error(Helpers.handleServerError(action.payload), 10);
        },
      );

    builder
      .addCase(deleteEmployeeTaxRelief.pending, (state: Draft<EmployeeTaxReliefsState>) => {
        state.loading = true;
        state.error = null;
      })
      .addCase(
        deleteEmployeeTaxRelief.fulfilled,
        (state: Draft<EmployeeTaxReliefsState>, action: PayloadAction<string>) => {
          state.employeeTaxReliefs = state.employeeTaxReliefs.filter(
            (r) => r.id !== action.payload,
          );
          state.loading = false;
          state.error = null;
          message.success('Tax relief removed successfully');
        },
      )
      .addCase(
        deleteEmployeeTaxRelief.rejected,
        (state: Draft<EmployeeTaxReliefsState>, action: RejectedActionPayload) => {
          state.loading = false;
          state.error = Helpers.handleServerError(action.payload);
          message.error(Helpers.handleServerError(action.payload), 10);
        },
      );
  },
});

export const { clearEmployeeTaxReliefs } = EmployeeTaxReliefsSlice.actions;
export default EmployeeTaxReliefsSlice;
export type { EmployeeTaxReliefsState };