diff --git a/src/LinkController.php b/src/LinkController.php
new file mode 100644
index 0000000..d64a2fc
--- /dev/null
+++ b/src/LinkController.php
@@ -0,0 +1,185 @@
+<?php
+
+declare(strict_types=1);
+
+final class LinkController
+{
+    public function __construct(
+        private readonly LinkRepository $repository,
+        private readonly JsonExporter $exporter,
+    ) {
+    }
+
+    public function handle(string $method, string $path): void
+    {
+        if ($path === '/links' || $path === '/links/') {
+            match ($method) {
+                'GET'  => $this->listLinks(),
+                'POST' => $this->createLink(),
+                default => $this->methodNotAllowed(),
+            };
+
+            return;
+        }
+
+        if (preg_match('#^/links/(\d+)$#', $path, $matches)) {
+            $id = (int) $matches[1];
+
+            match ($method) {
+                'GET'    => $this->showLink($id),
+                'PUT'    => $this->updateLink($id),
+                'DELETE' => $this->deleteLink($id),
+                default => $this->methodNotAllowed(),
+            };
+
+            return;
+        }
+
+        $this->routeNotFound();
+    }
+
+    private function listLinks(): void
+    {
+        $this->json($this->repository->all());
+    }
+
+    private function showLink(int $id): void
+    {
+        $link = $this->repository->find($id);
+
+        if ($link === null) {
+            $this->json(['error' => 'Lien introuvable.'], 404);
+
+            return;
+        }
+
+        $this->json($link);
+    }
+
+    private function createLink(): void
+    {
+        $data = $this->body();
+        $errors = $this->validate($data);
+
+        if ($errors !== []) {
+            $this->json(['errors' => $errors], 422);
+
+            return;
+        }
+
+        try {
+            $id = $this->repository->create(
+                trim($data['title']),
+                trim((string) ($data['description'] ?? '')),
+                trim($data['link_url']),
+                $this->nullable($data['thumbnail'] ?? null),
+            );
+        } catch (PDOException) {
+            $this->json(['error' => 'Cette URL de vidéo existe déjà.'], 409);
+
+            return;
+        }
+
+        $this->exporter->export();
+        $this->json($this->repository->find($id), 201);
+    }
+
+    private function updateLink(int $id): void
+    {
+        if ($this->repository->find($id) === null) {
+            $this->json(['error' => 'Lien introuvable.'], 404);
+
+            return;
+        }
+
+        $data = $this->body();
+        $errors = $this->validate($data);
+
+        if ($errors !== []) {
+            $this->json(['errors' => $errors], 422);
+
+            return;
+        }
+
+        try {
+            $this->repository->update(
+                $id,
+                trim($data['title']),
+                trim((string) ($data['description'] ?? '')),
+                trim($data['link_url']),
+                $this->nullable($data['thumbnail'] ?? null),
+            );
+        } catch (PDOException) {
+            $this->json(['error' => 'Cette URL de vidéo existe déjà.'], 409);
+
+            return;
+        }
+
+        $this->exporter->export();
+        $this->json($this->repository->find($id));
+    }
+
+    private function deleteLink(int $id): void
+    {
+        if ($this->repository->find($id) === null) {
+            $this->json(['error' => 'Lien introuvable.'], 404);
+
+            return;
+        }
+
+        $this->repository->delete($id);
+        $this->exporter->export();
+        http_response_code(204);
+    }
+
+    private function body(): array
+    {
+        $decoded = json_decode(file_get_contents('php://input'), true);
+
+        return is_array($decoded) ? $decoded : [];
+    }
+
+    private function validate(array $data): array
+    {
+        $errors = [];
+
+        $title = trim((string) ($data['title'] ?? ''));
+        $linkUrl = trim((string) ($data['link_url'] ?? ''));
+
+        if ($title === '') {
+            $errors[] = 'Le champ title est requis.';
+        }
+
+        if ($linkUrl === '') {
+            $errors[] = 'Le champ link_url est requis.';
+        } elseif (!filter_var($linkUrl, FILTER_VALIDATE_URL)) {
+            $errors[] = 'Le champ link_url doit être une URL valide.';
+        }
+
+        return $errors;
+    }
+
+    private function nullable(?string $value): ?string
+    {
+        $value = trim((string) $value);
+
+        return $value === '' ? null : $value;
+    }
+
+    private function json(mixed $data, int $status = 200): void
+    {
+        http_response_code($status);
+        header('Content-Type: application/json; charset=utf-8');
+        echo json_encode($data, JSON_UNESCAPED_UNICODE);
+    }
+
+    private function routeNotFound(): void
+    {
+        $this->json(['error' => 'Route introuvable.'], 404);
+    }
+
+    private function methodNotAllowed(): void
+    {
+        $this->json(['error' => 'Méthode non autorisée.'], 405);
+    }
+}
\ No newline at end of file