Outsource db pool creation in preparation for unit tests

crates/store/migrations/20231006125208_init.sql

@@ -0,0 +1,17 @@
+CREATE TABLE calendars (
+  id TEXT PRIMARY KEY NOT NULL,
+  name TEXT NOT NULL,
+  owner TEXT NOT NULL,
+  description TEXT,
+  color TEXT,
+  timezone TEXT NOT NULL
+);
+
+CREATE TABLE events (
+  uid TEXT NOT NULL,
+  cid TEXT NOT NULL,
+  ics TEXT NOT NULL,
+  PRIMARY KEY (cid, uid),
+  FOREIGN KEY (cid) REFERENCES calendars(id)
+);
+

crates/store/src/sqlite_store.rs

@@ -1,6 +1,6 @@
 use anyhow::Result;
 use async_trait::async_trait;
-use sqlx::SqlitePool;
+use sqlx::{sqlite::SqliteConnectOptions, Pool, Sqlite, SqlitePool};
 
 use crate::{
     calendar::{Calendar, CalendarStore},
@@ -111,3 +111,17 @@ impl CalendarStore for SqliteCalendarStore {
         Ok(())
     }
 }
+
+pub async fn create_db_pool(db_url: &str, migrate: bool) -> anyhow::Result<Pool<Sqlite>>{
+    let db = SqlitePool::connect_with(
+        SqliteConnectOptions::new()
+            .filename(db_url)
+            .create_if_missing(true),
+    )
+    .await?;
+    if migrate {
+        println!("Running database migrations");
+        sqlx::migrate!("./migrations").run(&db).await?;
+    }
+    Ok(db)
+}