adds history table

lootalot_db/migrations/2019-10-27-135235_history/down.sql

@@ -0,0 +1 @@
+DROP TABLE history;

lootalot_db/migrations/2019-10-27-135235_history/up.sql

@@ -0,0 +1,8 @@
+CREATE TABLE history (
+       id INTEGER PRIMARY KEY NOT NULL,
+       player_id INTEGER NOT NULL,
+       event_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
+       text VARCHAR NOT NULL,
+       updates VARCHAR,
+       FOREIGN KEY (player_id) REFERENCES players(id)
+);

lootalot_db/src/models/history.rs

@@ -0,0 +1,42 @@
+use diesel::prelude::*;
+use crate::schema::history;
+use crate::{DbConnection, QueryResult};
+
+/// An event in history
+#[derive(Debug, Queryable)]
+pub struct Event {
+    id: i32,
+    player_id: i32,
+    event_date: String,
+    text: String,
+    updates: Option<String>,
+}
+
+#[derive(Debug, Insertable)]
+#[table_name = "history"]
+struct NewEvent<'a> {
+    player_id: i32,
+    text: &'a str,
+    updates: &'a str,
+}
+
+/// Insert a new event
+pub fn insert_event(conn: &DbConnection, id: i32, text: &str, updates: &str) -> QueryResult<Event> {
+    diesel::insert_into(history::table)
+        .values(&NewEvent{
+            player_id: id,
+            text,
+            updates,
+        })
+        .execute(conn)?;
+    history::table
+        .order(history::dsl::id.desc())
+        .first(conn)
+}
+
+pub fn get_last_of_player(conn: &DbConnection, id: i32) -> QueryResult<Event> {
+    history::table
+        .filter(history::dsl::player_id.eq(id))
+        .order(history::dsl::id.desc())
+        .first(conn)
+}