Commit: 690c1f6

Commit Details

SHA	`690c1f6ce426c62c29e87ac132dda0f8125192ff`
Tree	`5a67fd55b56735ab4e469c7d06c1c73c4c2b4c20`
Author	<f69e50@finnacloud.com> 1766368110 +0300
Committer	<f69e50@finnacloud.com> 1766368110 +0300
Message	initialize backend structure with controllers, DTOs, and configuration files
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File: src/main/java/com/paymentlink/controller/api/ProductApiController.java

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      package com.paymentlink.controller.api;
    
      import com.paymentlink.model.entity.Product;
    
      import com.paymentlink.service.ProductService;
    
      import org.springframework.http.HttpStatus;
    
      import org.springframework.http.ResponseEntity;
    
      import org.springframework.web.bind.annotation.*;
    
      import java.util.HashMap;
    
      import java.util.List;
    
      import java.util.Map;
    
      @RestController
    
      @RequestMapping("/api/products")
    
      public class ProductApiController {
    
          private final ProductService productService;
    
          public ProductApiController(ProductService productService) {
    
              this.productService = productService;
    
          }
    
          /**
    
           * GET /api/products - List products with optional filtering and pagination
    
           */
    
          @GetMapping
    
          public ResponseEntity<Map<String, Object>> getProducts(
    
                  @RequestParam(required = false) String category,
    
                  @RequestParam(required = false) String search,
    
                  @RequestParam(required = false) Boolean inStock,
    
                  @RequestParam(defaultValue = "1") int page,
    
                  @RequestParam(defaultValue = "12") int size) {
    
              try {
    
                  List<Product> products;
    
                  if (search != null && !search.isEmpty()) {
    
                      products = productService.searchProducts(search, category);
    
                  } else if (category != null && !category.isEmpty()) {
    
                      products = productService.getProductsByCategory(category);
    
                  } else {
    
                      products = productService.getAllProducts();
    
                  }
    
                  // Filter by stock if requested
    
                  if (Boolean.TRUE.equals(inStock)) {
    
                      products = products.stream()
    
                              .filter(p -> p.getStock() == null || p.getStock() > 0)
    
                              .toList();
    
                  }
    
                  // Calculate pagination
    
                  int totalProducts = products.size();
    
                  int totalPages = (int) Math.ceil((double) totalProducts / size);
    
                  int startIndex = (page - 1) * size;
    
                  int endIndex = Math.min(startIndex + size, totalProducts);
    
                  // Validate page number
    
                  if (page < 1) page = 1;
    
                  if (page > totalPages && totalPages > 0) page = totalPages;
    
                  // Get paginated results
    
                  List<Product> paginatedProducts = (startIndex < totalProducts) 
    
                      ? products.subList(startIndex, endIndex) 
    
                      : List.of();
    
                  Map<String, Object> response = new HashMap<>();
    
                  response.put("success", true);
    
                  response.put("products", paginatedProducts);
    
                  // Pagination metadata
    
                  Map<String, Object> pagination = new HashMap<>();
    
                  pagination.put("currentPage", page);
    
                  pagination.put("pageSize", size);
    
                  pagination.put("totalProducts", totalProducts);
    
                  pagination.put("totalPages", totalPages);
    
                  pagination.put("hasNextPage", page < totalPages);
    
                  pagination.put("hasPreviousPage", page > 1);
    
                  response.put("pagination", pagination);
    
                  return ResponseEntity.ok(response);
    
              } catch (Exception e) {
    
                  Map<String, Object> error = new HashMap<>();
    
                  error.put("success", false);
    
                  error.put("error", e.getMessage());
    
                  return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
    
              }
    
          }
    
          /**
    
           * GET /api/products/categories/list - Get all categories
    
           */
    
          @GetMapping("/categories/list")
    
          public ResponseEntity<Map<String, Object>> getCategories() {
    
              try {
    
                  List<String> categories = productService.getAllCategories();
    
                  Map<String, Object> response = new HashMap<>();
    
                  response.put("success", true);
    
                  response.put("categories", categories);
    
                  return ResponseEntity.ok(response);
    
              } catch (Exception e) {
    
                  Map<String, Object> error = new HashMap<>();
    
                  error.put("success", false);
    
                  error.put("error", e.getMessage());
    
                  return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
    
              }
    
          }
    
          /**
    
           * GET /api/products/{id} - Get product by ID
    
           */
    
          @GetMapping("/{id}")
    
          public ResponseEntity<Map<String, Object>> getProductById(@PathVariable Long id) {
    
              try {
    
                  return productService.getProductById(id)
    
                          .map(product -> {
    
                              Map<String, Object> response = new HashMap<>();
    
                              response.put("success", true);
    
                              response.put("product", product);
    
                              return ResponseEntity.ok(response);
    
                          })
    
                          .orElseGet(() -> {
    
                              Map<String, Object> error = new HashMap<>();
    
                              error.put("success", false);
    
                              error.put("error", "Product not found");
    
                              return ResponseEntity.status(HttpStatus.NOT_FOUND).body(error);
    
                          });
    
              } catch (Exception e) {
    
                  Map<String, Object> error = new HashMap<>();
    
                  error.put("success", false);
    
                  error.put("error", e.getMessage());
    
                  return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
    
              }
    
          }
    
          /**
    
           * POST /api/products - Create product
    
           */
    
          @PostMapping
    
          public ResponseEntity<Map<String, Object>> createProduct(@RequestBody Product product) {
    
              try {
    
                  if (product.getName() == null || product.getPrice() == null || product.getCurrency() == null) {
    
                      Map<String, Object> error = new HashMap<>();
    
                      error.put("success", false);
    
                      error.put("error", "Name, price, and currency are required");
    
                      return ResponseEntity.badRequest().body(error);
    
                  }
    
                  Product created = productService.createProduct(product);
    
                  Map<String, Object> response = new HashMap<>();
    
                  response.put("success", true);
    
                  response.put("product", created);
    
                  return ResponseEntity.status(HttpStatus.CREATED).body(response);
    
              } catch (Exception e) {
    
                  Map<String, Object> error = new HashMap<>();
    
                  error.put("success", false);
    
                  error.put("error", e.getMessage());
    
                  return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
    
              }
    
          }
    
          /**
    
           * PUT /api/products/{id} - Update product
    
           */
    
          @PutMapping("/{id}")
    
          public ResponseEntity<Map<String, Object>> updateProduct(
    
                  @PathVariable Long id,
    
                  @RequestBody Product updates) {
    
              try {
    
                  return productService.updateProduct(id, updates)
    
                          .map(product -> {
    
                              Map<String, Object> response = new HashMap<>();
    
                              response.put("success", true);
    
                              response.put("product", product);
    
                              return ResponseEntity.ok(response);
    
                          })
    
                          .orElseGet(() -> {
    
                              Map<String, Object> error = new HashMap<>();
    
                              error.put("success", false);
    
                              error.put("error", "Product not found");
    
                              return ResponseEntity.status(HttpStatus.NOT_FOUND).body(error);
    
                          });
    
              } catch (Exception e) {
    
                  Map<String, Object> error = new HashMap<>();
    
                  error.put("success", false);
    
                  error.put("error", e.getMessage());
    
                  return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
    
              }
    
          }
    
          /**
    
           * DELETE /api/products/{id} - Delete product
    
           */
    
          @DeleteMapping("/{id}")
    
          public ResponseEntity<Map<String, Object>> deleteProduct(@PathVariable Long id) {
    
              try {
    
                  boolean deleted = productService.deleteProduct(id);
    
                  if (deleted) {
    
                      Map<String, Object> response = new HashMap<>();
    
                      response.put("success", true);
    
                      response.put("message", "Product deleted");
    
                      return ResponseEntity.ok(response);
    
                  } else {
    
                      Map<String, Object> error = new HashMap<>();
    
                      error.put("success", false);
    
                      error.put("error", "Product not found");
    
                      return ResponseEntity.status(HttpStatus.NOT_FOUND).body(error);
    
                  }
    
              } catch (Exception e) {
    
                  Map<String, Object> error = new HashMap<>();
    
                  error.put("success", false);
    
                  error.put("error", e.getMessage());
    
                  return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
    
              }
    
          }
    
      }

1	package com.paymentlink.controller.api;
2
3	import com.paymentlink.model.entity.Product;
4	import com.paymentlink.service.ProductService;
5	import org.springframework.http.HttpStatus;
6	import org.springframework.http.ResponseEntity;
7	import org.springframework.web.bind.annotation.*;
8
9	import java.util.HashMap;
10	import java.util.List;
11	import java.util.Map;
12
13	@RestController
14	@RequestMapping("/api/products")
15	public class ProductApiController {
16
17	private final ProductService productService;
18
19	public ProductApiController(ProductService productService) {
20	this.productService = productService;
21	}
22
23	/**
24	* GET /api/products - List products with optional filtering and pagination
25	*/
26	@GetMapping
27	public ResponseEntity<Map<String, Object>> getProducts(
28	@RequestParam(required = false) String category,
29	@RequestParam(required = false) String search,
30	@RequestParam(required = false) Boolean inStock,
31	@RequestParam(defaultValue = "1") int page,
32	@RequestParam(defaultValue = "12") int size) {
33
34	try {
35	List<Product> products;
36
37	if (search != null && !search.isEmpty()) {
38	products = productService.searchProducts(search, category);
39	} else if (category != null && !category.isEmpty()) {
40	products = productService.getProductsByCategory(category);
41	} else {
42	products = productService.getAllProducts();
43	}
44
45	// Filter by stock if requested
46	if (Boolean.TRUE.equals(inStock)) {
47	products = products.stream()
48	.filter(p -> p.getStock() == null \|\| p.getStock() > 0)
49	.toList();
50	}
51
52	// Calculate pagination
53	int totalProducts = products.size();
54	int totalPages = (int) Math.ceil((double) totalProducts / size);
55	int startIndex = (page - 1) * size;
56	int endIndex = Math.min(startIndex + size, totalProducts);
57
58	// Validate page number
59	if (page < 1) page = 1;
60	if (page > totalPages && totalPages > 0) page = totalPages;
61
62	// Get paginated results
63	List<Product> paginatedProducts = (startIndex < totalProducts)
64	? products.subList(startIndex, endIndex)
65	: List.of();
66
67	Map<String, Object> response = new HashMap<>();
68	response.put("success", true);
69	response.put("products", paginatedProducts);
70
71	// Pagination metadata
72	Map<String, Object> pagination = new HashMap<>();
73	pagination.put("currentPage", page);
74	pagination.put("pageSize", size);
75	pagination.put("totalProducts", totalProducts);
76	pagination.put("totalPages", totalPages);
77	pagination.put("hasNextPage", page < totalPages);
78	pagination.put("hasPreviousPage", page > 1);
79	response.put("pagination", pagination);
80
81	return ResponseEntity.ok(response);
82
83	} catch (Exception e) {
84	Map<String, Object> error = new HashMap<>();
85	error.put("success", false);
86	error.put("error", e.getMessage());
87	return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
88	}
89	}
90
91	/**
92	* GET /api/products/categories/list - Get all categories
93	*/
94	@GetMapping("/categories/list")
95	public ResponseEntity<Map<String, Object>> getCategories() {
96	try {
97	List<String> categories = productService.getAllCategories();
98	Map<String, Object> response = new HashMap<>();
99	response.put("success", true);
100	response.put("categories", categories);
101	return ResponseEntity.ok(response);
102
103	} catch (Exception e) {
104	Map<String, Object> error = new HashMap<>();
105	error.put("success", false);
106	error.put("error", e.getMessage());
107	return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
108	}
109	}
110
111	/**
112	* GET /api/products/{id} - Get product by ID
113	*/
114	@GetMapping("/{id}")
115	public ResponseEntity<Map<String, Object>> getProductById(@PathVariable Long id) {
116	try {
117	return productService.getProductById(id)
118	.map(product -> {
119	Map<String, Object> response = new HashMap<>();
120	response.put("success", true);
121	response.put("product", product);
122	return ResponseEntity.ok(response);
123	})
124	.orElseGet(() -> {
125	Map<String, Object> error = new HashMap<>();
126	error.put("success", false);
127	error.put("error", "Product not found");
128	return ResponseEntity.status(HttpStatus.NOT_FOUND).body(error);
129	});
130
131	} catch (Exception e) {
132	Map<String, Object> error = new HashMap<>();
133	error.put("success", false);
134	error.put("error", e.getMessage());
135	return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
136	}
137	}
138
139	/**
140	* POST /api/products - Create product
141	*/
142	@PostMapping
143	public ResponseEntity<Map<String, Object>> createProduct(@RequestBody Product product) {
144	try {
145	if (product.getName() == null \|\| product.getPrice() == null \|\| product.getCurrency() == null) {
146	Map<String, Object> error = new HashMap<>();
147	error.put("success", false);
148	error.put("error", "Name, price, and currency are required");
149	return ResponseEntity.badRequest().body(error);
150	}
151
152	Product created = productService.createProduct(product);
153	Map<String, Object> response = new HashMap<>();
154	response.put("success", true);
155	response.put("product", created);
156	return ResponseEntity.status(HttpStatus.CREATED).body(response);
157
158	} catch (Exception e) {
159	Map<String, Object> error = new HashMap<>();
160	error.put("success", false);
161	error.put("error", e.getMessage());
162	return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
163	}
164	}
165
166	/**
167	* PUT /api/products/{id} - Update product
168	*/
169	@PutMapping("/{id}")
170	public ResponseEntity<Map<String, Object>> updateProduct(
171	@PathVariable Long id,
172	@RequestBody Product updates) {
173
174	try {
175	return productService.updateProduct(id, updates)
176	.map(product -> {
177	Map<String, Object> response = new HashMap<>();
178	response.put("success", true);
179	response.put("product", product);
180	return ResponseEntity.ok(response);
181	})
182	.orElseGet(() -> {
183	Map<String, Object> error = new HashMap<>();
184	error.put("success", false);
185	error.put("error", "Product not found");
186	return ResponseEntity.status(HttpStatus.NOT_FOUND).body(error);
187	});
188
189	} catch (Exception e) {
190	Map<String, Object> error = new HashMap<>();
191	error.put("success", false);
192	error.put("error", e.getMessage());
193	return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
194	}
195	}
196
197	/**
198	* DELETE /api/products/{id} - Delete product
199	*/
200	@DeleteMapping("/{id}")
201	public ResponseEntity<Map<String, Object>> deleteProduct(@PathVariable Long id) {
202	try {
203	boolean deleted = productService.deleteProduct(id);
204	if (deleted) {
205	Map<String, Object> response = new HashMap<>();
206	response.put("success", true);
207	response.put("message", "Product deleted");
208	return ResponseEntity.ok(response);
209	} else {
210	Map<String, Object> error = new HashMap<>();
211	error.put("success", false);
212	error.put("error", "Product not found");
213	return ResponseEntity.status(HttpStatus.NOT_FOUND).body(error);
214	}
215
216	} catch (Exception e) {
217	Map<String, Object> error = new HashMap<>();
218	error.put("success", false);
219	error.put("error", e.getMessage());
220	return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
221	}
222	}
223	}
224
225

backend

Commit: 690c1f6

Commit Details

File: src/main/java/com/paymentlink/controller/api/ProductApiController.java