feat: 添加配置目录环境变量 (#632)

* feat: 添加配置目录环境变量

* feat: 添加配置目录命令行参数

* feat: 添加配置目录短参数

* refactor: 调整一下写法

---------

Co-authored-by: amtoaer <amtoaer@gmail.com>

crates/bili_sync/src/config/args.rs

@@ -1,4 +1,5 @@
 use std::borrow::Cow;
+use std::path::PathBuf;
 use std::sync::LazyLock;
 
 use clap::Parser;
@@ -16,6 +17,9 @@ pub struct Args {
 
     #[arg(short, long, env = "DISABLE_CREDENTIAL_REFRESH")]
     pub disable_credential_refresh: bool,
+
+    #[arg(short, long, env = "BILI_SYNC_CONFIG_DIR")]
+    pub config_dir: Option<PathBuf>,
 }
 
 mod built_info {

crates/bili_sync/src/config/current.rs

@@ -8,6 +8,7 @@ use serde::{Deserialize, Serialize};
 use validator::Validate;
 
 use crate::bilibili::{Credential, DanmakuOption, FilterOption};
+use crate::config::args::ARGS;
 use crate::config::default::{
     default_auth_token, default_bind_address, default_collection_path, default_favorite_path, default_submission_path,
     default_time_format,
@@ -16,8 +17,12 @@ use crate::config::item::{ConcurrentLimit, NFOTimeType, SkipOption, Trigger};
 use crate::notifier::Notifier;
 use crate::utils::model::{load_db_config, save_db_config};
 
-pub static CONFIG_DIR: LazyLock<PathBuf> =
+pub static CONFIG_DIR: LazyLock<PathBuf> = LazyLock::new(|| {
-    LazyLock::new(|| dirs::config_dir().expect("No config path found").join("bili-sync"));
+    ARGS.config_dir
+        .clone()
+        .or_else(|| dirs::config_dir().map(|dir| dir.join("bili-sync")))
+        .expect("No config path found")
+});
 
 #[derive(Serialize, Deserialize, Validate, Clone)]
 pub struct Config {