import { createClient, SupabaseClient } from '@supabase/supabase-js';
import type { Database } from './types';

const supabaseUrl = import.meta.env.SUPABASE_URL;
const supabaseAnonKey = import.meta.env.SUPABASE_ANON_KEY;

if (!supabaseUrl || !supabaseAnonKey) {
  console.warn('Supabase credentials not configured. Set SUPABASE_URL and SUPABASE_ANON_KEY in .env');
}

export const supabase: SupabaseClient<Database> = createClient(
  supabaseUrl || 'http://localhost:54321',
  supabaseAnonKey || 'placeholder-anon-key',
  {
    auth: {
      persistSession: true,
      autoRefreshToken: true,
    },
  }
);

// Admin client with service role key - bypasses RLS
export const supabaseAdmin: SupabaseClient<Database> = createClient(
  supabaseUrl || 'http://localhost:54321',
  supabaseAnonKey || 'placeholder-anon-key',
  {
    auth: {
      persistSession: false,
    },
  }
);

// Database types for Supabase
export interface Database {
  public: {
    Tables: {
      users: {
        Row: {
          id: string;
          email: string;
          name: string | null;
          role: 'customer' | 'vendor' | 'admin';
          avatar_url: string | null;
          phone: string | null;
          created_at: string;
          updated_at: string;
        };
        Insert: {
          id?: string;
          email: string;
          name?: string | null;
          role?: 'customer' | 'vendor' | 'admin';
          avatar_url?: string | null;
          phone?: string | null;
        };
        Update: {
          id?: string;
          email?: string;
          name?: string | null;
          role?: 'customer' | 'vendor' | 'admin';
          avatar_url?: string | null;
          phone?: string | null;
          updated_at?: string;
        };
      };
      profiles: {
        Row: {
          id: string;
          user_id: string;
          first_name: string | null;
          last_name: string | null;
          phone: string | null;
          address: string | null;
          city: string | null;
          province: string | null;
          postal_code: string | null;
          created_at: string;
          updated_at: string;
        };
        Insert: {
          id?: string;
          user_id: string;
          first_name?: string | null;
          last_name?: string | null;
          phone?: string | null;
          address?: string | null;
          city?: string | null;
          province?: string | null;
          postal_code?: string | null;
        };
        Update: {
          first_name?: string | null;
          last_name?: string | null;
          phone?: string | null;
          address?: string | null;
          city?: string | null;
          province?: string | null;
          postal_code?: string | null;
          updated_at?: string;
        };
      };
      categories: {
        Row: {
          id: string;
          name: string;
          slug: string;
          description: string | null;
          image_url: string | null;
          parent_id: string | null;
          sort_order: number;
          is_active: boolean;
          created_at: string;
        };
        Insert: {
          id?: string;
          name: string;
          slug: string;
          description?: string | null;
          image_url?: string | null;
          parent_id?: string | null;
          sort_order?: number;
          is_active?: boolean;
        };
        Update: {
          name?: string;
          slug?: string;
          description?: string | null;
          image_url?: string | null;
          parent_id?: string | null;
          sort_order?: number;
          is_active?: boolean;
        };
      };
      products: {
        Row: {
          id: string;
          vendor_id: string | null;
          category_id: string | null;
          name: string;
          slug: string;
          description: string | null;
          price: number;
          compare_at_price: number | null;
          sku: string | null;
          barcode: string | null;
          inventory: number;
          images: string[];
          status: 'draft' | 'active' | 'archived';
          created_at: string;
          updated_at: string;
        };
        Insert: {
          id?: string;
          vendor_id?: string | null;
          category_id?: string | null;
          name: string;
          slug: string;
          description?: string | null;
          price: number;
          compare_at_price?: number | null;
          sku?: string | null;
          barcode?: string | null;
          inventory?: number;
          images?: string[];
          status?: 'draft' | 'active' | 'archived';
        };
        Update: {
          vendor_id?: string | null;
          category_id?: string | null;
          name?: string;
          slug?: string;
          description?: string | null;
          price?: number;
          compare_at_price?: number | null;
          sku?: string | null;
          barcode?: string | null;
          inventory?: number;
          images?: string[];
          status?: 'draft' | 'active' | 'archived';
          updated_at?: string;
        };
      };
      orders: {
        Row: {
          id: string;
          order_number: string;
          user_id: string | null;
          guest_email: string | null;
          status: 'pending' | 'confirmed' | 'processing' | 'shipped' | 'delivered' | 'cancelled';
          payment_status: 'pending' | 'paid' | 'failed' | 'refunded';
          subtotal: number;
          tax: number;
          shipping: number;
          discount: number;
          total: number;
          shipping_name: string | null;
          shipping_phone: string | null;
          shipping_address: string | null;
          shipping_city: string | null;
          shipping_province: string | null;
          shipping_postal_code: string | null;
          notes: string | null;
          created_at: string;
          updated_at: string;
        };
        Insert: {
          id?: string;
          order_number: string;
          user_id?: string | null;
          guest_email?: string | null;
          status?: 'pending' | 'confirmed' | 'processing' | 'shipped' | 'delivered' | 'cancelled';
          payment_status?: 'pending' | 'paid' | 'failed' | 'refunded';
          subtotal: number;
          tax: number;
          shipping: number;
          discount?: number;
          total: number;
          shipping_name?: string | null;
          shipping_phone?: string | null;
          shipping_address?: string | null;
          shipping_city?: string | null;
          shipping_province?: string | null;
          shipping_postal_code?: string | null;
          notes?: string | null;
        };
        Update: {
          status?: 'pending' | 'confirmed' | 'processing' | 'shipped' | 'delivered' | 'cancelled';
          payment_status?: 'pending' | 'paid' | 'failed' | 'refunded';
          subtotal?: number;
          tax?: number;
          shipping?: number;
          discount?: number;
          total?: number;
          shipping_name?: string | null;
          shipping_phone?: string | null;
          shipping_address?: string | null;
          shipping_city?: string | null;
          shipping_province?: string | null;
          shipping_postal_code?: string | null;
          notes?: string | null;
          updated_at?: string;
        };
      };
      order_items: {
        Row: {
          id: string;
          order_id: string;
          product_id: string;
          product_name: string;
          product_image: string | null;
          price: number;
          quantity: number;
          total: number;
          created_at: string;
        };
        Insert: {
          id?: string;
          order_id: string;
          product_id: string;
          product_name: string;
          product_image?: string | null;
          price: number;
          quantity: number;
          total: number;
        };
        Update: {
          product_name?: string;
          product_image?: string | null;
          price?: number;
          quantity?: number;
          total?: number;
        };
      };
      cart_items: {
        Row: {
          id: string;
          user_id: string;
          product_id: string;
          quantity: number;
          created_at: string;
          updated_at: string;
        };
        Insert: {
          id?: string;
          user_id: string;
          product_id: string;
          quantity: number;
        };
        Update: {
          quantity?: number;
          updated_at?: string;
        };
      };
      payments: {
        Row: {
          id: string;
          order_id: string;
          method: 'promptpay' | 'credit_card' | 'bank_transfer' | 'cash_on_delivery';
          amount: number;
          status: 'pending' | 'processing' | 'completed' | 'failed' | 'refunded';
          reference: string | null;
          metadata: Record<string, unknown> | null;
          created_at: string;
          updated_at: string;
        };
        Insert: {
          id?: string;
          order_id: string;
          method: 'promptpay' | 'credit_card' | 'bank_transfer' | 'cash_on_delivery';
          amount: number;
          status?: 'pending' | 'processing' | 'completed' | 'failed' | 'refunded';
          reference?: string | null;
          metadata?: Record<string, unknown> | null;
        };
        Update: {
          status?: 'pending' | 'processing' | 'completed' | 'failed' | 'refunded';
          reference?: string | null;
          metadata?: Record<string, unknown> | null;
          updated_at?: string;
        };
      };
    };
    Views: {
      [_ in never]: never;
    };
    Functions: {
      [_ in never]: never;
    };
    Enums: {
      [_ in never]: never;
    };
  };
}

// Helper functions for common queries
export async function getProductBySlug(slug: string) {
  const { data, error } = await supabase
    .from('products')
    .select('*, categories(*)')
    .eq('slug', slug)
    .eq('status', 'active')
    .single();
  
  if (error) throw error;
  return data;
}

export async function getProductsByCategory(categorySlug: string, limit = 20, offset = 0) {
  const { data, error } = await supabase
    .from('products')
    .select('*, categories(*)')
    .eq('categories.slug', categorySlug)
    .eq('status', 'active')
    .range(offset, offset + limit - 1);
  
  if (error) throw error;
  return data;
}

export async function getFeaturedProducts(limit = 10) {
  const { data, error } = await supabase
    .from('products')
    .select('*, categories(*)')
    .eq('status', 'active')
    .order('created_at', { ascending: false })
    .limit(limit);
  
  if (error) throw error;
  return data;
}

export async function getUserOrders(userId: string) {
  const { data, error } = await supabase
    .from('orders')
    .select('*, order_items(*, products(*))')
    .eq('user_id', userId)
    .order('created_at', { ascending: false });
  
  if (error) throw error;
  return data;
}

export async function getOrderByNumber(orderNumber: string) {
  const { data, error } = await supabase
    .from('orders')
    .select('*, order_items(*, products(*))')
    .eq('order_number', orderNumber)
    .single();
  
  if (error) throw error;
  return data;
}

export async function updateProductInventory(productId: string, quantity: number) {
  const { data, error } = await supabase.rpc('decrement_inventory', {
    product_id: productId,
    quantity: quantity,
  });
  
  if (error) throw error;
  return data;
}