feat: 大范围重构，支持视频合集下载 (#97)

crates/bili_sync/src/database.rs

@@ -1,13 +1,15 @@
 use anyhow::Result;
 use bili_sync_migration::{Migrator, MigratorTrait};
 use sea_orm::{ConnectOptions, Database, DatabaseConnection};
-use tokio::fs;
 
 use crate::config::CONFIG_DIR;
+
+fn database_url() -> String {
+    format!("sqlite://{}?mode=rwc", CONFIG_DIR.join("data.sqlite").to_string_lossy())
+}
+
 pub async fn database_connection() -> Result<DatabaseConnection> {
-    let target = CONFIG_DIR.join("data.sqlite");
-    fs::create_dir_all(&*CONFIG_DIR).await?;
-    let mut option = ConnectOptions::new(format!("sqlite://{}?mode=rwc", target.to_str().unwrap()));
+    let mut option = ConnectOptions::new(database_url());
     option
         .max_connections(100)
         .min_connections(5)
@@ -15,6 +17,9 @@ pub async fn database_connection() -> Result<DatabaseConnection> {
     Ok(Database::connect(option).await?)
 }
 
-pub async fn migrate_database(connection: &DatabaseConnection) -> Result<()> {
-    Ok(Migrator::up(connection, None).await?)
+pub async fn migrate_database() -> Result<()> {
+    // 注意此处使用内部构造的 DatabaseConnection，而不是通过 database_connection() 获取
+    // 这是因为使用多个连接的 Connection 会导致奇怪的迁移顺序问题，而使用默认的连接选项不会
+    let connection = Database::connect(database_url()).await?;
+    Ok(Migrator::up(&connection, None).await?)
 }