1 files changed, 127 insertions, 0 deletions
diff --git a/api/src/modules/categories/categories.controller.ts b/api/src/modules/categories/categories.controller.ts
new file mode 100644
index 0000000..9327932
--- /dev/null
+++ b/api/src/modules/categories/categories.controller.ts
@@ -0,0 +1,127 @@
+/**
+ * categories.controller.ts
+ * Lógica de negócio do CRUD de categorias.
+ */
+
+import type { FastifyReply, FastifyRequest } from 'fastify';
+import {
+  findAllCategories,
+  findCategoryById,
+  findCategoryBySlug,
+  createCategory,
+  updateCategory,
+  deleteCategory,
+} from './categories.repository.js';
+import type {
+  CategoryParams,
+  CreateCategoryBody,
+  UpdateCategoryBody,
+} from './categories.schema.js';
+import { eq, count } from 'drizzle-orm';
+import { tickets } from '@/db/schema.js';
+
+// ─── GET /categories ──────────────────────────────────────────────────────────
+
+export async function listCategoriesHandler(
+  request: FastifyRequest,
+  reply: FastifyReply,
+) {
+  const list = await findAllCategories(request.server.db);
+  return reply.send(list);
+}
+
+// ─── GET /categories/:id ──────────────────────────────────────────────────────
+
+export async function getCategoryHandler(
+  request: FastifyRequest<{ Params: CategoryParams }>,
+  reply: FastifyReply,
+) {
+  const category = await findCategoryById(request.server.db, request.params.id);
+
+  if (!category) {
+    return reply.notFound(`Categoria #${request.params.id} não encontrada.`);
+  }
+
+  return reply.send(category);
+}
+
+// ─── POST /categories ─────────────────────────────────────────────────────────
+
+export async function createCategoryHandler(
+  request: FastifyRequest<{ Body: CreateCategoryBody }>,
+  reply: FastifyReply,
+) {
+  const { name, slug, description } = request.body;
+  const db = request.server.db;
+
+  // Slug deve ser único
+  const existing = await findCategoryBySlug(db, slug);
+  if (existing) {
+    return reply.conflict(`Já existe uma categoria com o slug "${slug}".`);
+  }
+
+  const category = await createCategory(db, {
+    name,
+    slug,
+    description: description ?? null,
+  });
+
+  return reply.code(201).send(category);
+}
+
+// ─── PATCH /categories/:id ────────────────────────────────────────────────────
+
+export async function updateCategoryHandler(
+  request: FastifyRequest<{ Params: CategoryParams; Body: UpdateCategoryBody }>,
+  reply: FastifyReply,
+) {
+  const { id } = request.params;
+  const db = request.server.db;
+
+  const existing = await findCategoryById(db, id);
+  if (!existing) {
+    return reply.notFound(`Categoria #${id} não encontrada.`);
+  }
+
+  // Se o slug está sendo alterado, verifica conflito com outro registro
+  if (request.body.slug && request.body.slug !== existing.slug) {
+    const slugConflict = await findCategoryBySlug(db, request.body.slug);
+    if (slugConflict) {
+      return reply.conflict(`Já existe uma categoria com o slug "${request.body.slug}".`);
+    }
+  }
+
+  const updated = await updateCategory(db, id, request.body);
+  return reply.send(updated);
+}
+
+// ─── DELETE /categories/:id ───────────────────────────────────────────────────
+
+export async function deleteCategoryHandler(
+  request: FastifyRequest<{ Params: CategoryParams }>,
+  reply: FastifyReply,
+) {
+  const { id } = request.params;
+  const db = request.server.db;
+
+  const existing = await findCategoryById(db, id);
+  if (!existing) {
+    return reply.notFound(`Categoria #${id} não encontrada.`);
+  }
+
+  // Protege contra deleção de categoria em uso
+  const [{ total }] = await db
+    .select({ total: count() })
+    .from(tickets)
+    .where(eq(tickets.categoryId, id));
+
+  if (total > 0) {
+    return reply.conflict(
+      `Categoria em uso por ${total} chamado(s). Reclassifique-os antes de excluir.`,
+    );
+  }
+
+  await deleteCategory(db, id);
+
+  return reply.code(204).send();
+}