Added base entity.

finnow-api/source/app.d

@@ -1,6 +1,17 @@
-import std.stdio;
+import slf4d;
+import handy_httpd;
+import handy_httpd.handlers.path_handler;
 
-void main()
-{
-	writeln("Edit source/app.d to start your project.");
+import model.base;
+
+void main() {
+	ServerConfig cfg;
+	cfg.workerPoolSize = 5;
+	cfg.port = 8080;
+	PathHandler pathHandler = new PathHandler();
+	pathHandler.addMapping(Method.GET, "/status", (ref ctx) {
+		ctx.response.writeBodyString("online");
+	});
+	HttpServer server = new HttpServer(pathHandler, cfg);
+	server.start();
 }

finnow-api/source/model/base.d

@@ -0,0 +1,37 @@
+module model.base;
+
+/**
+ * The base class for all persistent entities with a unique integer id.
+ * It offers some basic utilities like equality and comparison by default.
+ */
+abstract class IdEntity {
+    const ulong id;
+
+    this(ulong id) {
+        this.id = id;
+    }
+
+    override bool opEquals(Object other) const {
+        if (IdEntity e = cast(IdEntity) other) {
+            return e.id == id;
+        }
+        return false;
+    }
+
+    override size_t toHash() const {
+        import std.conv : to;
+        return id.to!size_t;
+    }
+
+    override string toString() const {
+        import std.format : format;
+        return format!"IdEntity(id = %d)"(id);
+    }
+
+    override int opCmp(Object other) const {
+        if (IdEntity e = cast(IdEntity) other) {
+            return this.id < e.id;
+        }
+        return 1;
+    }
+}