User posts

exam/api/Users/Posts/Posts.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Api\Users\Posts;
+
+use Exception;
+use Khofmann\Api\Api;
+use Khofmann\Models\User\User;
+use Khofmann\Response\Response;
+use Khofmann\ApiError\ApiError;
+use Khofmann\Input\Input;
+
+class Posts extends Api
+{
+  public function get($id): void
+  {
+    // Fetch and constrain all parameters.
+    $page = max(0, intval(Input::get("p", 0)));
+    $limit = constrain(0, 30, intval(Input::get("l", 10)));
+    $sort = Input::get("s", "asc");
+    $sort = in_array($sort, ["asc", "desc"]) ? $sort : "asc";
+
+    // Try and get users posts
+    // Throw errors according to situation.
+    try {
+      Response::json(User::getByID($id)->posts($page, $limit, $sort));
+    } catch (Exception $err) {
+      switch ($err->getMessage()) {
+        case "NotFound":
+          throw ApiError::notFound("user");
+        default:
+          // Due to how the failed field is handled, it's ApiError is inside the models update
+          throw $err;
+      }
+    }
+  }
+}

exam/api/docs/api.yaml

@@ -593,6 +593,62 @@ paths:
                     }
       tags:
         - User
+  /users/{id}/posts:
+    get:
+      summary: Get user posts
+      description: Get a users posts ID.
+      security:
+        - BasicAuth: []
+      parameters:
+        - name: id
+          in: path
+          description: User ID
+          required: true
+          schema:
+            type: integer
+            format: int14
+        - in: query
+          name: p
+          schema:
+            type: integer
+            minimum: 0
+            default: 0
+          description: Current page.
+        - in: query
+          name: l
+          schema:
+            type: integer
+            minimum: 0
+            maximum: 30
+            default: 10
+          description: The number of items to return.
+        - in: query
+          name: s
+          schema:
+            type: string
+            enum:
+              - asc
+              - desc
+            default: asc
+          description: Sort order by time.
+      responses:
+        200:
+          description: Success.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/PostListResponse"
+        404:
+          description: User not found.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/NotFoundResponse"
+              examples:
+                User not found:
+                  value: { "code": "NotFound", "entity": "user" }
+      tags:
+        - User
 
 externalDocs:
   url: https://khofmann.userpage.fu-berlin.de/phpCourse/exam/api/docs/

exam/classes/Models/Post/Post.php

@@ -22,7 +22,7 @@ class Post implements JsonSerializable
   private string $content;
   private DateTime $postedAt;
 
-  private function __construct(int $id, ?User $user, ?string $name, ?string $image, string $content, string $postedAt)
+  public function __construct(int $id, ?User $user, ?string $name, ?string $image, string $content, string $postedAt)
   {
     $this->id = $id;
     $this->user = $user;

exam/classes/Models/User/User.php

@@ -10,6 +10,7 @@ use Khofmann\Config\Config;
 use JsonSerializable;
 use Khofmann\ApiError\ApiError;
 use Khofmann\GUID\GUID;
+use Khofmann\Models\Post\Post;
 use PDOException;
 
 class User implements JsonSerializable
@@ -426,6 +427,48 @@ class User implements JsonSerializable
     return $this;
   }
 
+  public function posts(int $page, int $limit, string $sort)
+  {
+    $db = Database::getInstance();
+    $stmt = $db->prepare(
+      "SELECT
+        COUNT(*)
+      FROM
+        egb_gaestebuch
+      WHERE
+        benutzer_id = :ID"
+    );
+    $stmt->bindValue(":ID", $this->id);
+    $stmt->execute();
+    $count = $stmt->fetch(PDO::FETCH_COLUMN, 0);
+
+
+    $stmt = $db->prepare(
+      "SELECT
+        *
+      FROM
+        egb_gaestebuch
+      WHERE
+        benutzer_id = :ID
+      ORDER BY
+        id $sort
+      LIMIT $limit
+      OFFSET " . ($page * $limit)
+    );
+    $stmt->bindValue(":ID", $this->id);
+    $stmt->execute();
+    $data = $stmt->fetchAll();
+
+    $list = array_map(
+      function ($item) {
+        return new Post($item["id"], $this, null, null, $item["beitrag"], $item["zeitstempel"]);
+      },
+      $data
+    );
+
+    return ["pages" => intdiv($count, $limit + 1) + 1, "data" => $list];
+  }
+
   /*
   * Getters
   */

exam/routes/routes.php

@@ -53,6 +53,8 @@ SimpleRouter::group(["middleware" => Khofmann\Auth\Auth::class], function () {
   SimpleRouter::post("/logout", [Api\Logout\Logout::class, "post"]);
   // Get user
   SimpleRouter::get("/users/{id}", [Api\Users\Users::class, "get"]);
+  // Get user posts
+  SimpleRouter::get("/users/{id}/posts", [Api\Users\Posts\Posts::class, "get"]);
   // Update self
   SimpleRouter::patch("/users/self", [Api\Users\Users::class, "patchSelf"]);
   // Update image self