Adding scheduling module (#15)

Reviewed-on: phoenix/textsender-models#15

src/message/mod.rs

@@ -1,4 +1,5 @@
 pub mod event;
+pub mod scheduling;
 
 use serde::{Deserialize, Serialize};
 

src/message/scheduling/mod.rs

@@ -0,0 +1,27 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+pub struct ScheduledMessageEvent {
+    id: uuid::Uuid,
+    contact_id: uuid::Uuid,
+    message_id: uuid::Uuid,
+    scheduled_message_id: uuid::Uuid,
+    #[serde(with = "time::serde::rfc3339::option")]
+    created: Option<time::OffsetDateTime>,
+}
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+pub struct ScheduledMessage {
+    id: uuid::Uuid,
+    #[serde(with = "time::serde::rfc3339::option")]
+    scheduled: Option<time::OffsetDateTime>,
+    #[serde(with = "time::serde::rfc3339::option")]
+    created: Option<time::OffsetDateTime>,
+    status: String,
+    user_id: uuid::Uuid,
+}
+
+pub const READY: &str = "READY";
+pub const PENDING: &str = "PENDING";
+pub const PROCESSING: &str = "PROCESSING";
+pub const DONE: &str = "DONE";