package com.ecommerce.controller;

import com.ecommerce.dto.response.ApiResponse;
import com.ecommerce.dto.response.ProductResponse;
import com.ecommerce.service.ProductService;
import lombok.RequiredArgsConstructor;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.math.BigDecimal;

@RestController
@RequestMapping("/api/products")
@RequiredArgsConstructor
public class ProductController {
    
    private final ProductService productService;
    
    @GetMapping
    public ResponseEntity<ApiResponse<Page<ProductResponse>>> getAllProducts(
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "12") int size,
            @RequestParam(defaultValue = "createdAt") String sortBy,
            @RequestParam(defaultValue = "desc") String sortDir) {
        
        Sort sort = sortDir.equalsIgnoreCase("asc") ? Sort.by(sortBy).ascending() : Sort.by(sortBy).descending();
        Pageable pageable = PageRequest.of(page, size, sort);
        Page<ProductResponse> products = productService.getAllProducts(pageable);
        return ResponseEntity.ok(ApiResponse.success(products));
    }
    
    @GetMapping("/{id}")
    public ResponseEntity<ApiResponse<ProductResponse>> getProductById(@PathVariable String id) {
        ProductResponse product = productService.getProductById(id);
        return ResponseEntity.ok(ApiResponse.success(product));
    }
    
    @GetMapping("/category/{categoryId}")
    public ResponseEntity<ApiResponse<Page<ProductResponse>>> getProductsByCategory(
            @PathVariable String categoryId,
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "12") int size) {
        
        Pageable pageable = PageRequest.of(page, size);
        Page<ProductResponse> products = productService.getProductsByCategory(categoryId, pageable);
        return ResponseEntity.ok(ApiResponse.success(products));
    }
    
    @GetMapping("/featured")
    public ResponseEntity<ApiResponse<Page<ProductResponse>>> getFeaturedProducts(
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "8") int size) {
        
        Pageable pageable = PageRequest.of(page, size);
        Page<ProductResponse> products = productService.getFeaturedProducts(pageable);
        return ResponseEntity.ok(ApiResponse.success(products));
    }
    
    @GetMapping("/search")
    public ResponseEntity<ApiResponse<Page<ProductResponse>>> searchProducts(
            @RequestParam String q,
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "12") int size) {
        
        Pageable pageable = PageRequest.of(page, size);
        Page<ProductResponse> products = productService.searchProducts(q, pageable);
        return ResponseEntity.ok(ApiResponse.success(products));
    }
    
    @GetMapping("/filter/price")
    public ResponseEntity<ApiResponse<Page<ProductResponse>>> filterByPrice(
            @RequestParam BigDecimal min,
            @RequestParam BigDecimal max,
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "12") int size) {
        
        Pageable pageable = PageRequest.of(page, size);
        Page<ProductResponse> products = productService.filterByPrice(min, max, pageable);
        return ResponseEntity.ok(ApiResponse.success(products));
    }
    
    @GetMapping("/filter/rating")
    public ResponseEntity<ApiResponse<Page<ProductResponse>>> filterByRating(
            @RequestParam double minRating,
            @RequestParam(defaultValue = "0") int page,
            @RequestParam(defaultValue = "12") int size) {
        
        Pageable pageable = PageRequest.of(page, size);
        Page<ProductResponse> products = productService.filterByRating(minRating, pageable);
        return ResponseEntity.ok(ApiResponse.success(products));
    }
}