/**
 * Inventory hook for managing inventory state and operations
 */

import { useState, useEffect, useCallback } from 'react';
import { InventoryService } from '../../services/api/inventory.service';
import { 
  Ingredient, 
  IngredientCreate, 
  IngredientUpdate,
  StockLevel,
  StockMovement,
  StockMovementCreate,
  InventoryAlert,
  QualityCheckCreate,
  QualityCheck
} from '../../types/inventory.types';
import { ApiResponse, PaginatedResponse, QueryParams } from '../../types/api.types';

interface InventoryState {
  ingredients: Ingredient[];
  stockLevels: StockLevel[];
  stockMovements: StockMovement[];
  alerts: InventoryAlert[];
  qualityChecks: QualityCheck[];
  isLoading: boolean;
  error: string | null;
  pagination: {
    total: number;
    page: number;
    pages: number;
    limit: number;
  };
}

interface InventoryActions {
  // Ingredients
  fetchIngredients: (params?: QueryParams) => Promise<void>;
  createIngredient: (data: IngredientCreate) => Promise<boolean>;
  updateIngredient: (id: string, data: IngredientUpdate) => Promise<boolean>;
  deleteIngredient: (id: string) => Promise<boolean>;
  getIngredient: (id: string) => Promise<Ingredient | null>;
  
  // Stock Levels
  fetchStockLevels: (params?: QueryParams) => Promise<void>;
  updateStockLevel: (ingredientId: string, quantity: number, reason?: string) => Promise<boolean>;
  
  // Stock Movements
  fetchStockMovements: (params?: QueryParams) => Promise<void>;
  createStockMovement: (data: StockMovementCreate) => Promise<boolean>;
  
  // Alerts
  fetchAlerts: (params?: QueryParams) => Promise<void>;
  markAlertAsRead: (id: string) => Promise<boolean>;
  dismissAlert: (id: string) => Promise<boolean>;
  
  // Quality Checks
  fetchQualityChecks: (params?: QueryParams) => Promise<void>;
  createQualityCheck: (data: QualityCheckCreate) => Promise<boolean>;
  
  // Analytics
  getInventoryAnalytics: (startDate?: string, endDate?: string) => Promise<any>;
  getExpirationReport: () => Promise<any>;
  
  // Utilities
  clearError: () => void;
  refresh: () => Promise<void>;
}

export const useInventory = (): InventoryState & InventoryActions => {
  const [state, setState] = useState<InventoryState>({
    ingredients: [],
    stockLevels: [],
    stockMovements: [],
    alerts: [],
    qualityChecks: [],
    isLoading: false,
    error: null,
    pagination: {
      total: 0,
      page: 1,
      pages: 1,
      limit: 20,
    },
  });

  const inventoryService = new InventoryService();

  // Fetch ingredients
  const fetchIngredients = useCallback(async (params?: QueryParams) => {
    setState(prev => ({ ...prev, isLoading: true, error: null }));
    
    try {
      const response = await inventoryService.getIngredients(params);
      
      if (response.success && response.data) {
        setState(prev => ({
          ...prev,
          ingredients: Array.isArray(response.data) ? response.data : response.data.items || [],
          pagination: response.data.pagination || prev.pagination,
          isLoading: false,
        }));
      } else {
        setState(prev => ({
          ...prev,
          isLoading: false,
          error: response.error || 'Error al cargar ingredientes',
        }));
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        isLoading: false,
        error: 'Error de conexión al servidor',
      }));
    }
  }, [inventoryService]);

  // Create ingredient
  const createIngredient = useCallback(async (data: IngredientCreate): Promise<boolean> => {
    setState(prev => ({ ...prev, error: null }));
    
    try {
      const response = await inventoryService.createIngredient(data);
      
      if (response.success) {
        await fetchIngredients();
        return true;
      } else {
        setState(prev => ({
          ...prev,
          error: response.error || 'Error al crear ingrediente',
        }));
        return false;
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        error: 'Error de conexión al servidor',
      }));
      return false;
    }
  }, [inventoryService, fetchIngredients]);

  // Update ingredient
  const updateIngredient = useCallback(async (id: string, data: IngredientUpdate): Promise<boolean> => {
    setState(prev => ({ ...prev, error: null }));
    
    try {
      const response = await inventoryService.updateIngredient(id, data);
      
      if (response.success) {
        await fetchIngredients();
        return true;
      } else {
        setState(prev => ({
          ...prev,
          error: response.error || 'Error al actualizar ingrediente',
        }));
        return false;
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        error: 'Error de conexión al servidor',
      }));
      return false;
    }
  }, [inventoryService, fetchIngredients]);

  // Delete ingredient
  const deleteIngredient = useCallback(async (id: string): Promise<boolean> => {
    setState(prev => ({ ...prev, error: null }));
    
    try {
      const response = await inventoryService.deleteIngredient(id);
      
      if (response.success) {
        setState(prev => ({
          ...prev,
          ingredients: prev.ingredients.filter(ingredient => ingredient.id !== id),
        }));
        return true;
      } else {
        setState(prev => ({
          ...prev,
          error: response.error || 'Error al eliminar ingrediente',
        }));
        return false;
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        error: 'Error de conexión al servidor',
      }));
      return false;
    }
  }, [inventoryService]);

  // Get single ingredient
  const getIngredient = useCallback(async (id: string): Promise<Ingredient | null> => {
    try {
      const response = await inventoryService.getIngredient(id);
      return response.success ? response.data : null;
    } catch (error) {
      console.error('Error fetching ingredient:', error);
      return null;
    }
  }, [inventoryService]);

  // Fetch stock levels
  const fetchStockLevels = useCallback(async (params?: QueryParams) => {
    setState(prev => ({ ...prev, isLoading: true, error: null }));
    
    try {
      const response = await inventoryService.getStockLevels(params);
      
      if (response.success && response.data) {
        setState(prev => ({
          ...prev,
          stockLevels: Array.isArray(response.data) ? response.data : response.data.items || [],
          isLoading: false,
        }));
      } else {
        setState(prev => ({
          ...prev,
          isLoading: false,
          error: response.error || 'Error al cargar niveles de stock',
        }));
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        isLoading: false,
        error: 'Error de conexión al servidor',
      }));
    }
  }, [inventoryService]);

  // Update stock level
  const updateStockLevel = useCallback(async (ingredientId: string, quantity: number, reason?: string): Promise<boolean> => {
    setState(prev => ({ ...prev, error: null }));
    
    try {
      const response = await inventoryService.updateStockLevel(ingredientId, { 
        quantity, 
        reason: reason || 'Manual adjustment' 
      });
      
      if (response.success) {
        await fetchStockLevels();
        return true;
      } else {
        setState(prev => ({
          ...prev,
          error: response.error || 'Error al actualizar stock',
        }));
        return false;
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        error: 'Error de conexión al servidor',
      }));
      return false;
    }
  }, [inventoryService, fetchStockLevels]);

  // Fetch stock movements
  const fetchStockMovements = useCallback(async (params?: QueryParams) => {
    setState(prev => ({ ...prev, isLoading: true, error: null }));
    
    try {
      const response = await inventoryService.getStockMovements(params);
      
      if (response.success && response.data) {
        setState(prev => ({
          ...prev,
          stockMovements: Array.isArray(response.data) ? response.data : response.data.items || [],
          isLoading: false,
        }));
      } else {
        setState(prev => ({
          ...prev,
          isLoading: false,
          error: response.error || 'Error al cargar movimientos de stock',
        }));
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        isLoading: false,
        error: 'Error de conexión al servidor',
      }));
    }
  }, [inventoryService]);

  // Create stock movement
  const createStockMovement = useCallback(async (data: StockMovementCreate): Promise<boolean> => {
    setState(prev => ({ ...prev, error: null }));
    
    try {
      const response = await inventoryService.createStockMovement(data);
      
      if (response.success) {
        await fetchStockMovements();
        await fetchStockLevels();
        return true;
      } else {
        setState(prev => ({
          ...prev,
          error: response.error || 'Error al crear movimiento de stock',
        }));
        return false;
      }
    } catch (error) {
      setState(prev => ({
        ...prev,
        error: 'Error de conexión al servidor',
      }));
      return false;
    }
  }, [inventoryService, fetchStockMovements, fetchStockLevels]);

  // Fetch alerts
  const fetchAlerts = useCallback(async (params?: QueryParams) => {
    try {
      const response = await inventoryService.getAlerts(params);
      
      if (response.success && response.data) {
        setState(prev => ({
          ...prev,
          alerts: Array.isArray(response.data) ? response.data : response.data.items || [],
        }));
      }
    } catch (error) {
      console.error('Error fetching alerts:', error);
    }
  }, [inventoryService]);

  // Mark alert as read
  const markAlertAsRead = useCallback(async (id: string): Promise<boolean> => {
    try {
      const response = await inventoryService.markAlertAsRead(id);
      
      if (response.success) {
        setState(prev => ({
          ...prev,
          alerts: prev.alerts.map(alert => 
            alert.id === id ? { ...alert, is_read: true } : alert
          ),
        }));
        return true;
      }
      return false;
    } catch (error) {
      console.error('Error marking alert as read:', error);
      return false;
    }
  }, [inventoryService]);

  // Dismiss alert
  const dismissAlert = useCallback(async (id: string): Promise<boolean> => {
    try {
      const response = await inventoryService.dismissAlert(id);
      
      if (response.success) {
        setState(prev => ({
          ...prev,
          alerts: prev.alerts.filter(alert => alert.id !== id),
        }));
        return true;
      }
      return false;
    } catch (error) {
      console.error('Error dismissing alert:', error);
      return false;
    }
  }, [inventoryService]);

  // Fetch quality checks
  const fetchQualityChecks = useCallback(async (params?: QueryParams) => {
    try {
      const response = await inventoryService.getQualityChecks(params);
      
      if (response.success && response.data) {
        setState(prev => ({
          ...prev,
          qualityChecks: Array.isArray(response.data) ? response.data : response.data.items || [],
        }));
      }
    } catch (error) {
      console.error('Error fetching quality checks:', error);
    }
  }, [inventoryService]);

  // Create quality check
  const createQualityCheck = useCallback(async (data: QualityCheckCreate): Promise<boolean> => {
    try {
      const response = await inventoryService.createQualityCheck(data);
      
      if (response.success) {
        await fetchQualityChecks();
        return true;
      }
      return false;
    } catch (error) {
      console.error('Error creating quality check:', error);
      return false;
    }
  }, [inventoryService, fetchQualityChecks]);

  // Get inventory analytics
  const getInventoryAnalytics = useCallback(async (startDate?: string, endDate?: string) => {
    try {
      const response = await inventoryService.getAnalytics(startDate, endDate);
      return response.success ? response.data : null;
    } catch (error) {
      console.error('Error fetching inventory analytics:', error);
      return null;
    }
  }, [inventoryService]);

  // Get expiration report
  const getExpirationReport = useCallback(async () => {
    try {
      const response = await inventoryService.getExpirationReport();
      return response.success ? response.data : null;
    } catch (error) {
      console.error('Error fetching expiration report:', error);
      return null;
    }
  }, [inventoryService]);

  // Clear error
  const clearError = useCallback(() => {
    setState(prev => ({ ...prev, error: null }));
  }, []);

  // Refresh all data
  const refresh = useCallback(async () => {
    await Promise.all([
      fetchIngredients(),
      fetchStockLevels(),
      fetchAlerts(),
    ]);
  }, [fetchIngredients, fetchStockLevels, fetchAlerts]);

  // Initialize data on mount
  useEffect(() => {
    refresh();
  }, []);

  return {
    ...state,
    fetchIngredients,
    createIngredient,
    updateIngredient,
    deleteIngredient,
    getIngredient,
    fetchStockLevels,
    updateStockLevel,
    fetchStockMovements,
    createStockMovement,
    fetchAlerts,
    markAlertAsRead,
    dismissAlert,
    fetchQualityChecks,
    createQualityCheck,
    getInventoryAnalytics,
    getExpirationReport,
    clearError,
    refresh,
  };
};