import { createAsyncThunk } from '@reduxjs/toolkit';
import { apiService, Product } from '../../services/api';
import {
  setLoading,
  setError,
  setProducts,
  setCurrentProduct,
  setCategories,
  setStats,
  setPagination,
  addProduct,
  updateProduct,
  removeProduct,
} from './productSlice';

export const fetchProducts = createAsyncThunk(
  'product/fetchProducts',
  async (params: {
    page?: number;
    limit?: number;
    category?: string;
    status?: string;
    search?: string;
    sortBy?: string;
    sortOrder?: string;
  } = {}, { dispatch }) => {
    try {
      dispatch(setLoading(true));
      dispatch(setError(null));

      const response = await apiService.getAllProducts(params);

      if (response.success) {
        dispatch(setProducts(response.data.products));
        dispatch(setPagination(response.data.pagination));
        return response.data;
      } else {
        throw new Error('Failed to fetch products');
      }
    } catch (error: any) {
      const errorMessage = error.message || 'Failed to fetch products';
      dispatch(setError(errorMessage));
      throw error;
    } finally {
      dispatch(setLoading(false));
    }
  }
);

export const fetchProductById = createAsyncThunk(
  'product/fetchProductById',
  async (id: number, { dispatch }) => {
    try {
      dispatch(setLoading(true));
      dispatch(setError(null));

      const response = await apiService.getProductById(id);

      if (response.success) {
        dispatch(setCurrentProduct(response.data));
        return response.data;
      } else {
        throw new Error('Failed to fetch product');
      }
    } catch (error: any) {
      const errorMessage = error.message || 'Failed to fetch product';
      dispatch(setError(errorMessage));
      throw error;
    } finally {
      dispatch(setLoading(false));
    }
  }
);

export const createProduct = createAsyncThunk(
  'product/createProduct',
  async (productData: Partial<Product>, { dispatch }) => {
    try {
      dispatch(setLoading(true));
      dispatch(setError(null));

      const response = await apiService.createProduct(productData);

      if (response.success) {
        dispatch(addProduct(response.data));
        return response.data;
      } else {
        throw new Error('Failed to create product');
      }
    } catch (error: any) {
      const errorMessage = error.message || 'Failed to create product';
      dispatch(setError(errorMessage));
      throw error;
    } finally {
      dispatch(setLoading(false));
    }
  }
);

export const updateProductById = createAsyncThunk(
  'product/updateProductById',
  async ({ id, productData }: { id: number; productData: Partial<Product> }, { dispatch }) => {
    try {
      dispatch(setLoading(true));
      dispatch(setError(null));

      const response = await apiService.updateProduct(id, productData);

      if (response.success) {
        dispatch(updateProduct(response.data));
        return response.data;
      } else {
        throw new Error('Failed to update product');
      }
    } catch (error: any) {
      const errorMessage = error.message || 'Failed to update product';
      dispatch(setError(errorMessage));
      throw error;
    } finally {
      dispatch(setLoading(false));
    }
  }
);

export const deleteProductById = createAsyncThunk(
  'product/deleteProductById',
  async (id: number, { dispatch }) => {
    try {
      dispatch(setLoading(true));
      dispatch(setError(null));

      const response = await apiService.deleteProduct(id);

      if (response.success) {
        dispatch(removeProduct(id));
        return response;
      } else {
        throw new Error('Failed to delete product');
      }
    } catch (error: any) {
      const errorMessage = error.message || 'Failed to delete product';
      dispatch(setError(errorMessage));
      throw error;
    } finally {
      dispatch(setLoading(false));
    }
  }
);

export const fetchProductCategories = createAsyncThunk(
  'product/fetchProductCategories',
  async (_, { dispatch }) => {
    try {
      dispatch(setError(null));

      const response = await apiService.getProductCategories();

      if (response.success) {
        dispatch(setCategories(response.data));
        return response.data;
      } else {
        throw new Error('Failed to fetch product categories');
      }
    } catch (error: any) {
      const errorMessage = error.message || 'Failed to fetch product categories';
      dispatch(setError(errorMessage));
      throw error;
    }
  }
);

export const fetchProductStats = createAsyncThunk(
  'product/fetchProductStats',
  async (_, { dispatch }) => {
    try {
      dispatch(setError(null));

      const response = await apiService.getProductStats();

      if (response.success) {
        dispatch(setStats(response.data));
        return response.data;
      } else {
        throw new Error('Failed to fetch product stats');
      }
    } catch (error: any) {
      const errorMessage = error.message || 'Failed to fetch product stats';
      dispatch(setError(errorMessage));
      throw error;
    }
  }
);