merge Collection Branch

WebService/src/main/java/SAE/ApiREST/WebService/controller/ArticleControler.java

@@ -1,16 +1,21 @@
 package SAE.ApiREST.WebService.controller;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.hateoas.CollectionModel;
+import org.springframework.hateoas.EntityModel;
 import org.springframework.http.MediaType;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
+import SAE.ApiREST.WebService.Response;
 import SAE.ApiREST.WebService.exception.ArticleException;
 import SAE.ApiREST.WebService.model.Article;
 import SAE.ApiREST.WebService.service.IArticleService;
 
 import java.util.ArrayList;
-import java.util.List;
+
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
 
 @Controller
 @RequestMapping("/ArticleWebService")
@@ -19,147 +24,561 @@ public class ArticleControler {
     IArticleService articleService;
 
     // region POST
-
+    @PostMapping(
+        value = "/addArticle",
+        consumes = MediaType.APPLICATION_JSON_VALUE,
+        produces = MediaType.APPLICATION_JSON_VALUE
+        )
+    public @ResponseBody EntityModel<Response> addArticle(
+        @RequestBody Article article
+    ) {
+        Response results = articleService.addArticle(article);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).addArticle(article)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("allArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(article.getId())).withRel("getArticleById"),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(article.getId())).withRel("deleteArticle")
+        );
+    }
     // endregion
 
     // region PUT
+    @PutMapping(
+        value = "/updateTitle/{title}",
+        consumes = MediaType.APPLICATION_JSON_VALUE,
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Article> updateTitle(
+        @PathVariable("title") String title,
+        @RequestBody Article article
+    ) {
+        Article results = articleService.updateTitle(article, title);
+        
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).updateTitle(title, article)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("allArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(article.getId())).withRel("getArticleById"),
+            linkTo(methodOn(ArticleControler.class).getArticlesByTitle(article.getTitle())).withRel("getArticlesByTitle"),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(article.getId())).withRel("deleteArticle")
+        );
+    }
+    
+    @PutMapping(
+        value = "/updateUrl/{url}",
+        consumes = MediaType.APPLICATION_JSON_VALUE,
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Article> updateUrl(
+        @PathVariable("url") String url,
+        @RequestBody Article article
+    ) {
+        Article results = articleService.updateUrl(article, url);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).updateUrl(url, article)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("allArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(article.getId())).withRel("getArticleById"),
+            linkTo(methodOn(ArticleControler.class).getArticlesByUrl(article.getUrl())).withRel("getArticlesByUrl"),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(article.getId())).withRel("deleteArticle")
+        );
+    }
     
+    @PutMapping(
+        value = "/updateDatePublished/{datePublished}",
+        consumes = MediaType.APPLICATION_JSON_VALUE,
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Article> updateDatePublished(
+        @PathVariable("datePublished") String datePublished,
+        @RequestBody Article article
+    ) {
+        Article results = articleService.updateDatePublished(article, datePublished);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).updateDatePublished(datePublished, article)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("allArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(article.getId())).withRel("getArticleById"),
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedBefore(article.getDatePublished().toString())).withRel("getArticlesPublishedBefore"),
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedAfter(article.getDatePublished().toString())).withRel("getArticlesPublishedAfter"),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(article.getId())).withRel("deleteArticle")
+        );
+    }
+    
+    @PutMapping(
+        value = "/updateDateAdded/{dateAdded}",
+        consumes = MediaType.APPLICATION_JSON_VALUE,
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Article> updateDateAdded(
+        @PathVariable("dateAdded") String dateAdded,
+        @RequestBody Article article
+    ) {
+        Article results = articleService.updateDateAdded(article, dateAdded);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).updateDateAdded(dateAdded, article)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("allArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(article.getId())).withRel("getArticleById"),
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedBefore(article.getDateAdded().toString())).withRel("getArticlesAddedBefore"),
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedAfter(article.getDateAdded().toString())).withRel("getArticlesAddedAfter"),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(article.getId())).withRel("deleteArticle")
+        );
+    }
+    
+    @PutMapping(
+        value = "/changeVisibility",
+        consumes = MediaType.APPLICATION_JSON_VALUE,
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Article> changeVisibility(
+        @RequestBody Article article
+    ) {
+        Article results = articleService.changeVisibility(article);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).changeVisibility(article)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("allArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(article.getId())).withRel("getArticleById"),
+            linkTo(methodOn(ArticleControler.class).getVisibleArticles()).withRel("getVisibleArticle"),
+            linkTo(methodOn(ArticleControler.class).getInvisibleArticles()).withRel("getInvisibleArticle"),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(article.getId())).withRel("deleteArticle")
+        );
+    }
+    
+    @PutMapping(
+        value = "/updateType/{type}",
+        consumes = MediaType.APPLICATION_JSON_VALUE,
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Article> updateType(
+        @PathVariable("type") Integer type,
+        @RequestBody Article article
+    ) {
+        Article results = articleService.updateType(article, type);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).updateType(type, article)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("allArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(article.getId())).withRel("getArticleById"),
+            linkTo(methodOn(ArticleControler.class).getArticlesByType(article.getType())).withRel("getArticlesByType"),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(article.getId())).withRel("deleteArticle")
+        );
+    }
     // endregion
 
     // region GET
-
+    @GetMapping(
-    @GetMapping(value = "/getAllArticle", produces = MediaType.APPLICATION_JSON_VALUE)
+        value = "/getAllArticle", 
-    public @ResponseBody List<Article> getAllArticles() {
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getAllArticles() {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getAllArticles();
         
         if(results.isEmpty()) {
             throw new ArticleException("No articles available");
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withSelfRel()
+        );
     }
 
-    @GetMapping(value = "/getArticleById/{id}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody Article getArticlesById(@PathVariable(value = "id") Integer id) {
+        value = "/getArticleById/{id}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Article> getArticleById(@PathVariable(value = "id") Integer id) {
         Article results = articleService.getArticlesById(id);
         
         if(results == null) {
             throw new ArticleException("Undefined id");
         }
         
-        return results;
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticleById(id)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(id)).withRel("deleteArticleFromUrl")
+        );
     }
 
-    @GetMapping(value = "/getArticlesByTitle/{title}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesByTitle(@PathVariable(value = "title") String title) {
+        value = "/getArticlesByTitle/{title}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesByTitle(@PathVariable(value = "title") String title) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesByTitle(title);
         
         if(results.isEmpty()) {
             throw new ArticleException("Undefined title");
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesByTitle(title)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromTitle(title)).withRel("deleteArticleFromTitle")
+        );
+    }
+
+    @GetMapping(
+        value = "/getArticlesByUrl/{url}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesByUrl(@PathVariable(value = "url") String url) {
+        ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesByUrl(url);
+        
+        if(results.isEmpty()) {
+            throw new ArticleException("Undefined title");
+        }
+        
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesByUrl(url)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromUrl(url)).withRel("deleteArticleFromId")
+        );
     }
 
-    @GetMapping(value = "/getArticlesByType/{type}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesByType(@PathVariable(value = "type") Integer type) {
+        value = "/getArticlesByType/{type}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesByType(@PathVariable(value = "type") Integer type) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesByType(type);
 
         if (results.isEmpty()) {
             throw new ArticleException(String.format("No content of type %d", type));
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesByType(type)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromType(type)).withRel("deleteArticleFromType")
+        );
     }
 
-    @GetMapping(value = "/getVisibleArticles", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getVisibleArticles() {
+        value = "/getVisibleArticles", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getVisibleArticles() {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getVisibleArticles();
 
         if (results.isEmpty()) {
             throw new ArticleException("No visible article");
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getVisibleArticles()).withSelfRel()
+        );
     }
 
-    @GetMapping(value = "/getInvisibleArticles", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getInvisibleArticles() {
+        value = "/getInvisibleArticles", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getInvisibleArticles() {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getInvisibleArticles();
 
         if (results.isEmpty()) {
             throw new ArticleException("No invisible article");
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getInvisibleArticles()).withSelfRel()
+        );
     }
 
-    @GetMapping(value = "/getArticlesAddedBefore/{dateAdded}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesAddedBefore(@PathVariable(value = "dateAdded") String dateAdded) {
+        value = "/getArticlesAddedBefore/{dateAdded}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesAddedBefore(@PathVariable(value = "dateAdded") String dateAdded) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesAddedBefore(dateAdded);
 
         if (results.isEmpty()) {
             throw new ArticleException(String.format("No article added before %t", dateAdded));
         }
-        return results;
+        
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedBefore(dateAdded)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticleAddedBefore(dateAdded)).withRel("deleteArticleAddedBefore")
+        );
     }
 
-    @GetMapping(value = "/getArticlesAddedAfter/{dateAdded}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesAddedAfter(@PathVariable(value = "dateAdded") String dateAdded) {
+        value = "/getArticlesAddedAfter/{dateAdded}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesAddedAfter(@PathVariable(value = "dateAdded") String dateAdded) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesAddedAfter(dateAdded);
 
         if (results.isEmpty()) {
             throw new ArticleException(String.format("No article added after %t", dateAdded));
         }
-        return results;
+        
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedAfter(dateAdded)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticleAddedAfter(dateAdded)).withRel("deleteArticleAddedAfter")
+        );
     }
 
-    @GetMapping(value = "/getArticlesAddedBetween/{beginning}/{end}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesAddedAfter(@PathVariable(value = "beginning") String beginning, @PathVariable(value = "end") String end) {
+        value = "/getArticlesAddedBetween/{beginning}/{end}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesAddedBetween(@PathVariable(value = "beginning") String beginning, @PathVariable(value = "end") String end) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesAddedBetween(beginning, end);
 
         if (results.isEmpty()) {
             throw new ArticleException(String.format("No article added between %t and %t", beginning, end));
         }
-        return results;
+        
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedBetween(beginning, end)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticleAddedBetween(beginning, end)).withRel("deleteArticleAddedBetween")
+        );
     }
 
-    @GetMapping(value = "/getArticlesPublishedBefore/{datePublished}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesPublishedBefore(@PathVariable(value = "datePublished") String datePublished) {
+        value = "/getArticlesPublishedBefore/{datePublished}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesPublishedBefore(@PathVariable(value = "datePublished") String datePublished) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesPublishedBefore(datePublished);
 
         if (results.isEmpty()) {
             throw new ArticleException(String.format("No article published before %t", datePublished));
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedBefore(datePublished)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticlePublishedBefore(datePublished)).withRel("deleteArticlePublishedBefore")
+        );
     }
 
-    @GetMapping(value = "/getArticlesPublishedAfter/{datePublished}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesPublishedAfter(@PathVariable(value = "datePublished") String datePublished) {
+        value = "/getArticlesPublishedAfter/{datePublished}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesPublishedAfter(@PathVariable(value = "datePublished") String datePublished) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesPublishedAfter(datePublished);
 
         if (results.isEmpty()) {
             throw new ArticleException(String.format("No article published after %t", datePublished));
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedAfter(datePublished)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticlePublishedAfter(datePublished)).withRel("deleteArticlePublishedAfter")
+        );
     }
 
-    @GetMapping(value = "/getArticlesPublishedBetween/{beginning}/{end}", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(
-    public @ResponseBody List<Article> getArticlesPublishedAfter(@PathVariable(value = "beginning") String beginning, @PathVariable(value = "end") String end) {
+        value = "/getArticlesPublishedBetween/{beginning}/{end}", 
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody CollectionModel<Article> getArticlesPublishedBetween(@PathVariable(value = "beginning") String beginning, @PathVariable(value = "end") String end) {
         ArrayList<Article> results = (ArrayList<Article>) articleService.getArticlesPublishedBetween(beginning, end);
 
         if (results.isEmpty()) {
             throw new ArticleException(String.format("No article published between %t and %t", beginning, end));
         }
         
-        return results;
+        return CollectionModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedBetween(beginning, end)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).deleteArticlePublishedBetween(beginning, end)).withRel("getArticlesPublishedBetween")
+        );
     }
     
     // endregion
 
     // region DELETE
+    @DeleteMapping(
+        value = "/deleteArticleFromId/{id}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticleFromId(
+        @PathVariable("id") Integer id
+    ) {
+        Response results = articleService.deleteArticleFromId(id);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromId(id)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticleById(id)).withRel("getArticleById")
+        );
+    }
+
+    @DeleteMapping(
+        value = "/deleteArticleFromTitle/{title}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticleFromTitle(
+        @PathVariable("title") String title
+    ) {
+        Response results = articleService.deleteArticleFromTitle(title);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromTitle(title)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesByTitle(title)).withRel("getArticleByTitle")
+        );
+    }
 
+    @DeleteMapping(
+        value = "/deleteArticleFromUrl/{url}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticleFromUrl(
+        @PathVariable("url") String url
+    ) {
+        Response results = articleService.deleteArticleFromTitle(url);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromUrl(url)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesByUrl(url)).withRel("getArticlesByUrl")
+        );
+    }
+
+    @DeleteMapping(
+        value = "/deleteArticleFromType/{type}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticleFromType(
+        @PathVariable("type") Integer type
+    ) {
+        Response results = articleService.deleteArticleFromType(type);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticleFromType(type)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesByType(type)).withRel("getArticlesByType")
+        );
+    }
+
+    @DeleteMapping(
+        value = "/deleteArticleAddedBefore/{date}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticleAddedBefore(
+        @PathVariable("date") String date
+    ) {
+        Response results = articleService.deleteArticleAddedBefore(date);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticleAddedBefore(date)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedBefore(date)).withRel("getArticlesAddedBefore")
+        );
+    }
+
+    @DeleteMapping(
+        value = "/deleteArticleAddedAfter/{date}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticleAddedAfter(
+        @PathVariable("date") String date
+    ) {
+        Response results = articleService.deleteArticleAddedAfter(date);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticleAddedAfter(date)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedAfter(date)).withRel("getArticlesAddedAfter")
+        );
+    }
+    
+    @DeleteMapping(
+        value = "/deleteArticleAddedBetween/{beginning}/{end}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticleAddedBetween(
+        @PathVariable("beginning") String beginning,
+        @PathVariable("end") String end
+    ) {
+        Response results = articleService.deleteArticleAddedBetween(beginning, end);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticleAddedBetween(beginning, end)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesAddedBetween(beginning, end)).withRel("getArticlesAddedBetween")
+        );
+    }
+
+    @DeleteMapping(
+        value = "/deleteArticlePublishedBefore/{date}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticlePublishedBefore(
+        @PathVariable("date") String date
+    ) {
+        Response results = articleService.deleteArticlePublishedBefore(date);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticlePublishedBefore(date)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedBefore(date)).withRel("getArticlesPublishedBefore")
+        );
+    }
+
+    @DeleteMapping(
+        value = "/deleteArticlePublishedAfter/{date}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticlePublishedAfter(
+        @PathVariable("date") String date
+    ) {
+        Response results = articleService.deleteArticlePublishedBefore(date);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticlePublishedAfter(date)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedAfter(date)).withRel("getArticlesPublishedAfter")
+        );
+    }
+    
+    @DeleteMapping(
+        value = "/deleteArticlePublishedBetween/{beginning}/{end}",
+        produces = MediaType.APPLICATION_JSON_VALUE
+    )
+    public @ResponseBody EntityModel<Response> deleteArticlePublishedBetween(
+        @PathVariable("beginning") String beginning,
+        @PathVariable("end") String end
+    ) {
+        Response results = articleService.deleteArticlePublishedBetween(beginning, end);
+
+        return EntityModel.of(
+            results,
+            linkTo(methodOn(ArticleControler.class).deleteArticlePublishedBetween(beginning, end)).withSelfRel(),
+            linkTo(methodOn(ArticleControler.class).getAllArticles()).withRel("getAllArticles"),
+            linkTo(methodOn(ArticleControler.class).getArticlesPublishedBetween(beginning, end)).withRel("getArticlesPublishedBetween")
+        );
+    }
     // endregion
 }

WebService/src/main/java/SAE/ApiREST/WebService/controller/CollectController.java

@@ -201,8 +201,8 @@ public class CollectController {
 
         return EntityModel.of(art,
                 linkTo(methodOn(CollectController.class).getCollectionById(results.getId())).withSelfRel(),
-                //linkTo(methodOn(TeacherController.class).getTeachById(results.getTeacher().getId())).withSelfRel(),
+                linkTo(methodOn(TeacherController.class).getTeachById(results.getTeacher().getId())).withSelfRel(),
-                //linkTo(methodOn(ArticleControler.class).getArticleById(art.getId())).withSelfRel(),
+                linkTo(methodOn(ArticleControler.class).getArticleById(art.getId())).withSelfRel(),
                 linkTo(methodOn(CollectController.class).getAllArticlesById(results.getId())
                 ).withRel("getAllArticlesById"),
                 linkTo(methodOn(CollectController.class).deleteColletionById(results.getId())

WebService/src/main/java/SAE/ApiREST/WebService/controller/TeacherController.java

@@ -1,8 +1,11 @@
 package SAE.ApiREST.WebService.controller;
 
+import SAE.ApiREST.WebService.exception.TeacherException;
 import SAE.ApiREST.WebService.model.Teacher;
 import SAE.ApiREST.WebService.service.ITeacherService;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.hateoas.CollectionModel;
+import org.springframework.hateoas.EntityModel;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.stereotype.Controller;
@@ -12,6 +15,9 @@ import javax.print.attribute.standard.Media;
 import java.awt.*;
 import java.util.List;
 
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
+
 @Controller
 @RequestMapping("/ProfWebService")
 public class TeacherController {
@@ -19,21 +25,77 @@ public class TeacherController {
     private ITeacherService iTeacherServ;
 
 
-    public TeacherController() {
+    public TeacherController(ITeacherService iserv) {
+        this.iTeacherServ = iserv;
     }
 
     @GetMapping(value = "/all", produces = MediaType.APPLICATION_JSON_VALUE)
     @ResponseStatus(HttpStatus.OK)
-    public @ResponseBody List<Teacher> getAllTeacher(){
+    public @ResponseBody CollectionModel<Teacher> getAllTeacher(){
-        return iTeacherServ.getAllTeacher();
+        return CollectionModel.of(
+                iTeacherServ.getAllTeacher(),
+                linkTo(methodOn(TeacherController.class).getAllTeacher()).withSelfRel());
     }
-
+    @PostMapping(value = "addTeacher",produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE)
-    @PostMapping(produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE)
     @ResponseStatus(HttpStatus.CREATED)
-    public @ResponseBody Teacher createTeacher( @RequestBody Teacher teach){
+    public @ResponseBody EntityModel<Teacher> createTeacher( @RequestBody Teacher teach){
-        return teach;
-    }
 
-    //@GetMapping(value = "/{id}")
+        return EntityModel.of(teach,
-    //public
+                linkTo(methodOn(TeacherController.class).createTeacher(teach)).withSelfRel(),
+                linkTo(methodOn(TeacherController.class).getAllTeacher()).withRel("all"));
+    }
+    @GetMapping(value = "/getid/{id}")
+    public @ResponseBody EntityModel<Teacher> getTeachById(@PathVariable("id") Integer id){
+        Teacher tt = iTeacherServ.getTeacherById(id);
+        if( tt == null ){
+            throw new TeacherException("No teacher found for this id !");
+        }
+        return EntityModel.of(tt,
+                linkTo(methodOn(TeacherController.class).getTeachById(id)).withSelfRel(),
+                linkTo(methodOn(TeacherController.class).getAllTeacher()).withRel("all"));
+    }
+    @GetMapping(value = "/getusername/{username}")
+    public @ResponseBody EntityModel<Teacher> getTeachByUsername(@PathVariable("username") String username) {
+        Teacher tt = iTeacherServ.getTeacherByUsername(username);
+        if (tt == null) {
+            throw new TeacherException("No teacher found for this username");
+        }
+        return EntityModel.of(tt,
+                linkTo(methodOn(TeacherController.class).getTeachByUsername(username)).withSelfRel(),
+                linkTo(methodOn(TeacherController.class).getAllTeacher()).withRel("all"));
+    }
+    @GetMapping( value = "/getmail/{mail}" )
+    public @ResponseBody EntityModel<Teacher> getTeachByMail(@PathVariable("mail") String mail) {
+        Teacher tt = iTeacherServ.getTeacherByMail(mail);
+        if( tt == null ) {
+            throw new TeacherException("No teacher found for this mail");
+        }
+        return EntityModel.of(tt,
+                linkTo(methodOn(TeacherController.class).getTeachByMail(mail)).withSelfRel(),
+                linkTo(methodOn(TeacherController.class).getAllTeacher()).withRel("all"));
+    }
+    @GetMapping( value = "/getdate/{date}" )
+    public @ResponseBody Teacher getTeachByDate(@PathVariable("date") String date) {
+        Teacher tt = iTeacherServ.getTeacherByMail(date);
+        if( tt == null ) {
+            throw new TeacherException("No teacher found for this mail");
+        }
+        return  tt;
+    }
+    @PutMapping( value = "/modify/{username}" )
+    public @ResponseBody EntityModel<Teacher> modifyTeachUsername(@PathVariable("username") String username, Teacher tt){
+        if( username == "" ){
+            throw new TeacherException("Username provided for modification is empty");
+        }
+        iTeacherServ.modifyUsername(tt,username);
+        return EntityModel.of(tt,
+                linkTo(methodOn(TeacherController.class).modifyTeachUsername(username,tt)).withSelfRel(),
+                linkTo(methodOn(TeacherController.class).getAllTeacher()).withRel("all"));
+    }
+    @DeleteMapping( value = "delete")
+    public @ResponseBody EntityModel<List<Teacher>> deleteTeacher(Integer id){
+        return EntityModel.of(iTeacherServ.deleteTeacher(id),
+                linkTo(methodOn(TeacherController.class).deleteTeacher(id)).withSelfRel(),
+                linkTo(methodOn(TeacherController.class).getAllTeacher()).withRel("all"));
+    }
 }

WebService/src/main/java/SAE/ApiREST/WebService/exception/TeacherAdvice.java

@@ -0,0 +1,17 @@
+package SAE.ApiREST.WebService.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ControllerAdvice
+public class TeacherAdvice {
+    @ResponseBody
+    @ExceptionHandler(TeacherException.class)
+    @ResponseStatus(HttpStatus.NOT_FOUND)
+    public String teacherNFHandler( TeacherException e) {
+        return e.getMessage();
+    }
+}

WebService/src/main/java/SAE/ApiREST/WebService/exception/TeacherException.java

@@ -0,0 +1,7 @@
+package SAE.ApiREST.WebService.exception;
+
+public class TeacherException extends RuntimeException {
+    public TeacherException(String exception) {
+        super(exception);
+    }
+}

WebService/src/main/java/SAE/ApiREST/WebService/model/Article.java

@@ -2,6 +2,7 @@ package SAE.ApiREST.WebService.model;
 
 
 import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
 
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
@@ -12,32 +13,41 @@ import jakarta.persistence.Id;
 public class Article {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
-    String id;
+    Integer id;
     String title;
-    String URL;
+    String url;
     LocalDate dateAdded;
     LocalDate datePublished;
-    Boolean isVisible;
+    Boolean visible;
     Integer type;
     // ArrayList<Keyword> keywords = new ArrayList<>();
 
     public Article() {}
 
-    public Article(String title, String URL, LocalDate dateAdded, LocalDate datePublished, Boolean visibility, Integer type) {
+    public Article(String title, String url, LocalDate dateAdded, LocalDate datePublished, Boolean visibility, Integer type) {
-        this.id = "1";
+        this.id = 1;
         this.title = title;
-        this.URL = URL;
+        this.url = url;
         this.dateAdded = dateAdded;
         this.datePublished = datePublished;
-        this.isVisible = visibility;
+        this.visible = visibility;
         this.type = type;
     }
 
-    public String getId() {
+    public Article(String title, String url, String dateAdded, String datePublished, Boolean visibility, Integer type) {
+        this.id = 1;
+        this.title = title;
+        this.url = url;
+        this.dateAdded = LocalDate.parse(dateAdded, DateTimeFormatter.ofPattern("dd-MM-yyyy"));
+        this.datePublished = LocalDate.parse(datePublished, DateTimeFormatter.ofPattern("dd-MM-yyyy"));
+        this.visible = visibility;
+        this.type = type;
+    }
+    public Integer getId() {
         return this.id;
     }
 
-    public void setId(String id) {
+    public void setId(Integer id) {
         this.id = id;
     }
 
@@ -49,36 +59,36 @@ public class Article {
         this.title = title;
     }
 
-    public String getURL() {
+    public String getUrl() {
-        return this.URL;
+        return this.url;
     }
 
-    public void setURL(String URL) {
+    public void setUrl(String url) {
-        this.URL = URL;
+        this.url = url;
     }
 
     public LocalDate getDateAdded() {
         return this.dateAdded;
     }
 
-    public void setDateAdded(LocalDate dateAdded) {
+    public void setDateAdded(String dateAdded) {
-        this.dateAdded = dateAdded;
+        this.dateAdded = LocalDate.parse(dateAdded, DateTimeFormatter.ofPattern("dd-MM-yyyy"));
     }
 
     public LocalDate getDatePublished() {
         return this.datePublished;
     }
 
-    public void setDatePublished(LocalDate datePublished) {
+    public void setDatePublished(String datePublished) {
-        this.datePublished = datePublished;
+        this.datePublished = LocalDate.parse(datePublished, DateTimeFormatter.ofPattern("dd-MM-yyyy"));
     }
 
-    public Boolean isVisible() {
+    public Boolean getVisible() {
-        return this.isVisible;
+        return this.visible;
     }
 
-    public void setVisibility(Boolean isVisible) {
+    public void setVisibility(Boolean visible) {
-        this.isVisible = isVisible;
+        this.visible = visible;
     }
 
     public Integer getType() {

WebService/src/main/java/SAE/ApiREST/WebService/model/Teacher.java

@@ -4,7 +4,6 @@ import jakarta.persistence.Id;
 
 import java.time.LocalDate;
 import java.time.format.DateTimeFormatter;
-import java.util.Date;
 
 @Entity
 
@@ -38,8 +37,8 @@ public class Teacher {
         return date;
     }
 
-    public void setDate(LocalDate date) {
+    public void setDate(String date) {
-        this.date = date;
+        this.date = LocalDate.parse(date, DateTimeFormatter.ofPattern("dd-MM-yyyy"));
     }
 
     public String getMail() {

WebService/src/main/java/SAE/ApiREST/WebService/service/IArticleService.java

@@ -2,14 +2,29 @@ package SAE.ApiREST.WebService.service;
 
 import java.util.List;
 
+import SAE.ApiREST.WebService.Response;
 import SAE.ApiREST.WebService.model.Article;
 
 public interface IArticleService {
 
+    // region POST
+    public Response addArticle(Article article);
+    // endregion
+
+    // region PUT
+    public Article updateTitle(Article article, String title);
+    public Article updateUrl(Article article, String url);
+    public Article updateDatePublished(Article article, String datePublished);
+    public Article updateDateAdded(Article article, String dateAdded);
+    public Article changeVisibility(Article article);
+    public Article updateType(Article article, Integer type);
+    // endregion
+
     // region GET
     public List<Article> getAllArticles();
     Article getArticlesById(Integer id);
     public List<Article> getArticlesByTitle(String title);
+    public List<Article> getArticlesByUrl(String url);
     public List<Article> getArticlesByType(Integer type);
     public List<Article> getVisibleArticles();
     public List<Article> getInvisibleArticles();
@@ -21,4 +36,16 @@ public interface IArticleService {
     public List<Article> getArticlesPublishedBetween(String beginning, String end);
     // endregion
 
+    // region DELETE
+    public Response deleteArticleFromId(Integer id);
+    public Response deleteArticleFromTitle(String title);
+    public Response deleteArticleFromUrl(String url);
+    public Response deleteArticleFromType(Integer type);
+    public Response deleteArticleAddedBefore(String date);
+    public Response deleteArticleAddedAfter(String date);
+    public Response deleteArticleAddedBetween(String beginning, String end);
+    public Response deleteArticlePublishedBefore(String date);
+    public Response deleteArticlePublishedAfter(String date);
+    public Response deleteArticlePublishedBetween(String beginning, String end);
+    // endregion
 }

WebService/src/main/java/SAE/ApiREST/WebService/service/ITeacherService.java

@@ -1,21 +1,17 @@
 package SAE.ApiREST.WebService.service;
 
+import SAE.ApiREST.WebService.Response;
 import SAE.ApiREST.WebService.model.Teacher;
 
-import java.time.LocalDate;
 import java.util.List;
 
 public interface ITeacherService {
-
-    //Todo() by id, by mail, by username, allProf, by date (order), suppression, ajout, FAIRE DES REGIONS!
     public List<Teacher> getAllTeacher();
-
+    public Teacher getTeacherById(Integer id);
-    Teacher getTeacherById(Integer id);
-
     public Teacher getTeacherByUsername(String username);
     public Teacher getTeacherByMail(String mail);
     public Teacher getTeacherByDate(String date);
     public List<Teacher> addTeacher(Teacher t);
-
     public List<Teacher> deleteTeacher(Integer id);
+    public Response modifyUsername(Teacher t, String newUsername);
 }

WebService/src/main/java/SAE/ApiREST/WebService/service/StubArticleService.java

@@ -7,11 +7,66 @@ import java.util.List;
 
 import org.springframework.stereotype.Service;
 
+import SAE.ApiREST.WebService.Response;
 import SAE.ApiREST.WebService.model.Article;
 
 @Service
 public class StubArticleService implements IArticleService {
     
+    // region POST
+    @Override
+    public Response addArticle(Article article) {
+        return new Response(
+            article.getId(),
+            "Article successfully created"
+        );
+    }
+    // endregion
+
+    // region PUT
+    @Override
+    public Article updateTitle(Article article, String title) {
+        Article newArticle = article;
+        newArticle.setTitle(title);
+        return newArticle;
+    }
+
+    @Override
+    public Article updateUrl(Article article, String url) {
+        Article newArticle = article;
+        newArticle.setUrl(url);
+        return newArticle;
+    }
+
+    @Override
+    public Article updateDatePublished(Article article, String datePublished) {
+        Article newArticle = article;
+        newArticle.setDatePublished(datePublished);
+        return newArticle;
+    }
+
+    @Override
+    public Article updateDateAdded(Article article, String dateAdded) {
+        Article newArticle = article;
+        newArticle.setDateAdded(dateAdded);
+        return newArticle;
+    }
+
+    @Override
+    public Article changeVisibility(Article article) {
+        Article newArticle = article;
+        newArticle.setVisibility(!article.getVisible());
+        return newArticle;
+    }
+
+    @Override
+    public Article updateType(Article article, Integer type) {
+        Article newArticle = article;
+        newArticle.setType(type);
+        return newArticle;
+    }
+    // endregion
+
     // region GET
     @Override
     public List<Article> getAllArticles() {
@@ -80,6 +135,22 @@ public class StubArticleService implements IArticleService {
         return articles;
     }
 
+    @Override
+    public List<Article> getArticlesByUrl(String url) {
+        List<Article> articles = new ArrayList<>();
+
+        articles.add(new Article(
+            "title", 
+            url, 
+            LocalDate.now().minusMonths(1), 
+            LocalDate.now().minusMonths(2), 
+            true, 
+            1)
+            );
+
+        return articles;
+    }
+
     @Override
     public List<Article> getArticlesByType(Integer type) {
         List<Article> articles = new ArrayList<>();
@@ -224,4 +295,86 @@ public class StubArticleService implements IArticleService {
         return articles;
     }
     // endregion
+
+    // region DELETE
+    @Override
+    public Response deleteArticleFromId(Integer id) {
+        return new Response(
+            id,
+            "Article successfully deleted"
+        );
+    }
+    
+    @Override
+    public Response deleteArticleFromUrl(String url) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+    
+    @Override
+    public Response deleteArticleFromType(Integer type) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+
+    @Override
+    public Response deleteArticleFromTitle(String title) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+
+    @Override
+    public Response deleteArticleAddedBefore(String url) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+
+    @Override
+    public Response deleteArticleAddedAfter(String url) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+
+    @Override
+    public Response deleteArticleAddedBetween(String beginning, String end) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+
+    @Override
+    public Response deleteArticlePublishedBefore(String url) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+
+    @Override
+    public Response deleteArticlePublishedAfter(String url) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+
+    @Override
+    public Response deleteArticlePublishedBetween(String beginning, String end) {
+        return new Response(
+            1,
+            "Article successfully deleted"
+        );
+    }
+    // endregion
 }

WebService/src/main/java/SAE/ApiREST/WebService/service/TeacherServiceStub.java

@@ -1,18 +1,16 @@
 package SAE.ApiREST.WebService.service;
 
+import SAE.ApiREST.WebService.Response;
+import SAE.ApiREST.WebService.exception.TeacherException;
 import SAE.ApiREST.WebService.model.Teacher;
 import org.springframework.stereotype.Service;
 
-import java.time.LocalDate;
-import java.time.format.DateTimeFormatter;
-
 import java.util.ArrayList;
 import java.util.List;
 
 @Service
 public class TeacherServiceStub implements ITeacherService {
 
-    //todo() recevoir collections, ajouter collections, supprimer collections
     @Override
     public List<Teacher> getAllTeacher() {
         List<Teacher> allTeacher = new ArrayList<Teacher>();
@@ -31,9 +29,7 @@ public class TeacherServiceStub implements ITeacherService {
     }
 
     @Override
-    public Teacher getTeacherByUsername(String username) {
+    public Teacher getTeacherByUsername(String username) { return new Teacher(12, "30-08-2020", "dadadou@gmail.com", username); }
-        return new Teacher(12, "30-08-2020", "dadadou@gmail.com", username);
-    }
 
     @Override
     public Teacher getTeacherByMail(String mail) {
@@ -59,7 +55,15 @@ public class TeacherServiceStub implements ITeacherService {
         allTeacher.add(new Teacher(1,"12-01-2023", "aline.alipres@gmail.com", "MsGarconManque"));
         allTeacher.add(new Teacher(2, "20-08-2023", "Viviane.Delvecchio@gmail.com", "MmeMath"));
 
-        allTeacher.remove(getTeacherById(id));
+        if(allTeacher.remove(getTeacherById(id))){
             return allTeacher;
+        } else {
+            throw new TeacherException(String.format("Teacher {id} isn't removed", id));
+        }
+    }
+
+    public Response modifyUsername(Teacher t, String newUsername){
+        t.setUsername(newUsername);
+        return new Response(t.getId(),String.format("This user %s has changed username", t.getMail()));
     }
 }