import { createReducer } from '@reduxjs/toolkit';
import { addCustomer, resetAddCustomerState } from './thunk';

export interface AddCustomerState {
  loading: boolean;
  error: string | null;
  successMessage: string | null;
}

const initialState: AddCustomerState = {
  loading: false,
  error: null,
  successMessage: null,
};

export const addCustomerReducer = createReducer(initialState, builder => {
  builder
    .addCase(resetAddCustomerState, () => initialState)
    .addCase(addCustomer.pending, acc => {
      acc.loading = true;
      acc.error = null;
      acc.successMessage = null;
    })
    .addCase(addCustomer.fulfilled, (acc, action) => {
      acc.loading = false;
      acc.successMessage = 'Customer Added Successfully.';
      acc.error = null;
    })
    .addCase(addCustomer.rejected, (acc, action) => {
      acc.loading = false;
      acc.error =
        (action.payload as string) ??
        action.error.message ??
        'Failed to add customer';
    });
});

export default addCustomerReducer;