add database model types and a few other db things

migrations/sqlite/20241207082654_initial_table_setup.sql

@@ -7,7 +7,7 @@ CREATE TABLE IF NOT EXISTS books(
     book_id INTEGER PRIMARY KEY,
     book_title TEXT NOT NULL,
     book_description TEXT, 
-    book_creation_date INTEGER NOT NULL,
+    book_creation_date TEXT NOT NULL,
     author_id INTEGER NOT NULL,
     FOREIGN KEY (author_id) REFERENCES users(user_id) ON DELETE CASCADE
 
@@ -17,7 +17,7 @@ CREATE TABLE IF NOT EXISTS chapters(
     chapter_id INTEGER PRIMARY KEY,
     chapter_title TEXT NOT NULL,
     chapter_text TEXT NOT NULL,
-    chapter_creation_date INT NOT NULL,
+    chapter_creation_date TEXT NOT NULL,
     book_id INTEGER NOT NULL,
     author_id INTEGER NOT NULL,
     FOREIGN KEY (book_id) REFERENCES books(book_id) ON DELETE CASCADE,

src/db/mod.rs

@@ -2,6 +2,10 @@
 use log::{info, warn};
 use sqlx::{migrate::MigrateDatabase, PgPool, Postgres, Sqlite, SqlitePool};
 
+pub mod models;
+mod postgres;
+mod sqlite;
+
 /// Utility for interacting with the database
 #[derive(Clone)]
 pub enum DataBase {
@@ -62,4 +66,11 @@ impl DataBase {
 
         Self::Postgres(pool)
     }
+
+    pub fn get_chapter(&self, id: u32) -> models::Chapter {
+        match self {
+            DataBase::Sqlite(pool) => sqlite::sqlite_chapter(pool, id),
+            DataBase::Postgres(pool) => todo!(),
+        }
+    }
 }

src/db/models.rs

@@ -0,0 +1,21 @@
+pub struct Chapter {
+    pub id: u32,
+    pub title: String,
+    pub text: String,
+    pub creation_data: String,
+    pub book_id: u32,
+    pub author_id: u32,
+}
+
+pub struct Book {
+    pub id: u32,
+    pub title: String,
+    pub description: String,
+    pub creation_date: String,
+    pub author_id: u32,
+}
+
+pub struct User {
+    pub id: u32,
+    pub name: String,
+}

src/db/postgres.rs

@@ -0,0 +1 @@
+//! Module containing database code for Postgres

src/db/sqlite.rs

@@ -0,0 +1,5 @@
+//! Module containing database code for SQLite
+
+pub fn sqlite_chapter(pool: &sqlx::Pool<sqlx::Sqlite>, id: u32) -> super::models::Chapter {
+    todo!()
+}