Add message model

3 files changed, 41 insertions, 9 deletions

diff --git a/data.json b/data.json
new file mode 100644
index 0000000..5654e35
--- /dev/null
+++ b/data.json
@@ -0,0 +1,7 @@
+{
+    "message": {
+        "author": "John Smith",
+        "date": 0,
+        "content": "hello!"
+    }
+}
diff --git a/server/src/Main.scala b/server/src/Main.scala
index c76304a..47afea4 100644
--- a/server/src/Main.scala
+++ b/server/src/Main.scala
@@ -1,17 +1,16 @@
-package chat
-
+import scala.collection.mutable
 object Main extends cask.MainRoutes {
 
-  var data: String = ""
+  val messages = mutable.ListBuffer.empty[Message]
+
+  messages += Message("John Smith", 0, "Hello, world!")
 
   @cask.get("/")
-  def get() = {
-    data
-  }
+  def get() = upickle.default.write(messages, indent = 2) // indent = 2 to pretty-print
 
-  @cask.post("/")
-  def post(request: cask.Request) = {
-    data = new String(request.readAllBytes())
+  @cask.postJson("/")
+  def post(message: Message) = {
+    messages += message
   }
 
   initialize()
diff --git a/server/src/Message.scala b/server/src/Message.scala
new file mode 100644
index 0000000..55b4602
--- /dev/null
+++ b/server/src/Message.scala
@@ -0,0 +1,26 @@
+import java.time.Instant
+
+case class Message(
+  author: String,
+  date: Long, // seconds since epoch
+  content: String
+)
+
+object Message {
+
+  // A ReadWriter is used to serialize a message to JSON.
+  // The call to macroRW will generate a readwriter through compiler-time
+  // introspection. By default, the mapping of a case class to JSON is pretty
+  // straightforward. A message:
+  //   Message("John Smith", 0, "Hello, World!")
+  // will get rendered as
+  //   {
+  //     "author": "John Smith",
+  //     "date": 0,
+  //     "message": "Hello, World!"
+  //   }
+  //
+  implicit def messageRW: upickle.default.ReadWriter[Message] =
+    upickle.default.macroRW[Message]
+
+}