feat: Add organization logo upload

- Add uploads router with logo upload/delete/serve endpoints
- Add logo_url column migration for organizations table
- Update /organizations/current to include logo_url
- Max 5MB, supports JPG/PNG/WebP/SVG

src/db/postgres.ts

@@ -29,11 +29,28 @@ export async function initDB(): Promise<void> {
   try {
     const result = await client.queryObject`SELECT NOW()`;
     console.log("✅ Database connected:", result.rows[0]);
+    
+    // Run migrations
+    await runMigrations(client);
   } finally {
     client.release();
   }
 }
 
+async function runMigrations(client: ReturnType<Pool["connect"]> extends Promise<infer T> ? T : never): Promise<void> {
+  // Add logo_url column to organizations if not exists
+  try {
+    await client.queryObject`
+      ALTER TABLE organizations 
+      ADD COLUMN IF NOT EXISTS logo_url TEXT
+    `;
+    console.log("✅ Migration: logo_url column checked");
+  } catch (e) {
+    // Column might already exist, that's fine
+    console.log("ℹ️ Migration note:", e instanceof Error ? e.message : String(e));
+  }
+}
+
 export function getPool(): Pool {
   return pool;
 }

src/main.ts

@@ -18,6 +18,7 @@ import { vehiclesRouter } from "./routes/vehicles.ts";
 import { documentsRouter } from "./routes/documents.ts";
 import { customersRouter } from "./routes/customers.ts";
 import { billingRouter } from "./routes/billing.ts";
+import { uploadsRouter } from "./routes/uploads.ts";
 import { errorHandler } from "./middleware/error.ts";
 import { requestLogger } from "./middleware/logger.ts";
 import { initDB } from "./db/postgres.ts";
@@ -77,6 +78,8 @@ app.use(customersRouter.routes());
 app.use(customersRouter.allowedMethods());
 app.use(billingRouter.routes());
 app.use(billingRouter.allowedMethods());
+app.use(uploadsRouter.routes());
+app.use(uploadsRouter.allowedMethods());
 
 // Health check
 app.use((ctx) => {

src/routes/organizations.ts

@@ -110,8 +110,8 @@ organizationsRouter.post("/register", async (ctx) => {
 organizationsRouter.get("/current", authMiddleware, async (ctx) => {
   const { org_id: orgId } = ctx.state.auth.user;
   
-  const org = await queryOne<{ id: string; name: string; slug: string; settings: Record<string, unknown> }>(
-    "SELECT id, name, slug, settings FROM organizations WHERE id = $1",
+  const org = await queryOne<{ id: string; name: string; slug: string; settings: Record<string, unknown>; logo_url: string | null }>(
+    "SELECT id, name, slug, settings, logo_url FROM organizations WHERE id = $1",
     [orgId]
   );
   

src/routes/uploads.ts

@@ -0,0 +1,150 @@
+import { Router } from "@oak/oak";
+import { queryOne, execute } from "../db/postgres.ts";
+import { AppError } from "../middleware/error.ts";
+import { authMiddleware } from "../middleware/auth.ts";
+import { ensureDir } from "https://deno.land/std@0.208.0/fs/ensure_dir.ts";
+
+export const uploadsRouter = new Router({ prefix: "/api/uploads" });
+
+const UPLOAD_DIR = "/app/uploads";
+const MAX_FILE_SIZE = 5 * 1024 * 1024; // 5MB
+const ALLOWED_TYPES = ["image/jpeg", "image/png", "image/webp", "image/svg+xml"];
+
+// Ensure upload directory exists
+await ensureDir(UPLOAD_DIR);
+await ensureDir(`${UPLOAD_DIR}/logos`);
+
+// Upload organization logo (chef only)
+uploadsRouter.post("/logo", authMiddleware, async (ctx) => {
+  const { org_id: orgId, role } = ctx.state.auth.user;
+
+  if (role !== "chef") {
+    throw new AppError("Nur der Chef kann das Logo ändern", 403);
+  }
+
+  const contentType = ctx.request.headers.get("content-type") || "";
+  
+  if (!contentType.includes("multipart/form-data")) {
+    throw new AppError("Multipart form data required", 400);
+  }
+
+  const body = ctx.request.body;
+  const form = await body.formData();
+  const file = form.get("logo");
+
+  if (!file || !(file instanceof File)) {
+    throw new AppError("Keine Datei hochgeladen", 400);
+  }
+
+  // Validate file type
+  if (!ALLOWED_TYPES.includes(file.type)) {
+    throw new AppError("Nur JPG, PNG, WebP oder SVG erlaubt", 400);
+  }
+
+  // Validate file size
+  if (file.size > MAX_FILE_SIZE) {
+    throw new AppError("Datei zu groß (max 5MB)", 400);
+  }
+
+  // Generate unique filename
+  const ext = file.name.split(".").pop() || "png";
+  const filename = `${orgId}-${Date.now()}.${ext}`;
+  const filepath = `${UPLOAD_DIR}/logos/${filename}`;
+
+  // Delete old logo if exists
+  const oldOrg = await queryOne<{ logo_url: string | null }>(
+    "SELECT logo_url FROM organizations WHERE id = $1",
+    [orgId]
+  );
+
+  if (oldOrg?.logo_url) {
+    const oldFilename = oldOrg.logo_url.split("/").pop();
+    if (oldFilename) {
+      try {
+        await Deno.remove(`${UPLOAD_DIR}/logos/${oldFilename}`);
+      } catch {
+        // Ignore if file doesn't exist
+      }
+    }
+  }
+
+  // Save file
+  const arrayBuffer = await file.arrayBuffer();
+  await Deno.writeFile(filepath, new Uint8Array(arrayBuffer));
+
+  // Update organization
+  const logoUrl = `/api/uploads/logos/${filename}`;
+  await execute(
+    "UPDATE organizations SET logo_url = $1 WHERE id = $2",
+    [logoUrl, orgId]
+  );
+
+  ctx.response.body = {
+    message: "Logo hochgeladen",
+    logo_url: logoUrl,
+  };
+});
+
+// Delete organization logo (chef only)
+uploadsRouter.delete("/logo", authMiddleware, async (ctx) => {
+  const { org_id: orgId, role } = ctx.state.auth.user;
+
+  if (role !== "chef") {
+    throw new AppError("Nur der Chef kann das Logo löschen", 403);
+  }
+
+  const org = await queryOne<{ logo_url: string | null }>(
+    "SELECT logo_url FROM organizations WHERE id = $1",
+    [orgId]
+  );
+
+  if (org?.logo_url) {
+    const filename = org.logo_url.split("/").pop();
+    if (filename) {
+      try {
+        await Deno.remove(`${UPLOAD_DIR}/logos/${filename}`);
+      } catch {
+        // Ignore if file doesn't exist
+      }
+    }
+
+    await execute(
+      "UPDATE organizations SET logo_url = NULL WHERE id = $1",
+      [orgId]
+    );
+  }
+
+  ctx.response.body = { message: "Logo gelöscht" };
+});
+
+// Serve uploaded logos (public)
+uploadsRouter.get("/logos/:filename", async (ctx) => {
+  const filename = ctx.params.filename;
+  
+  // Sanitize filename
+  if (filename.includes("..") || filename.includes("/")) {
+    throw new AppError("Ungültiger Dateiname", 400);
+  }
+
+  const filepath = `${UPLOAD_DIR}/logos/${filename}`;
+
+  try {
+    const file = await Deno.readFile(filepath);
+    
+    // Determine content type
+    const ext = filename.split(".").pop()?.toLowerCase();
+    const contentTypes: Record<string, string> = {
+      jpg: "image/jpeg",
+      jpeg: "image/jpeg",
+      png: "image/png",
+      webp: "image/webp",
+      svg: "image/svg+xml",
+    };
+
+    ctx.response.headers.set("Content-Type", contentTypes[ext || ""] || "application/octet-stream");
+    ctx.response.headers.set("Cache-Control", "public, max-age=86400");
+    ctx.response.body = file;
+  } catch {
+    throw new AppError("Logo nicht gefunden", 404);
+  }
+});