feat: 添加收藏功能 API

- models.rs: 添加 is_favorite 字段到 WeatherData 和 WeatherDataBrief
- db.rs: 添加 get_favorites_list 和 set_weather_favorite 函数
- handlers/favorites.rs: 新建收藏 API 处理器
- handlers/mod.rs: 导出 favorites 模块
- main.rs: 注册收藏 API 路由

src/handlers/favorites.rs

@@ -0,0 +1,93 @@
+use actix_web::{web, delete, get, post, HttpResponse, Responder};
+use sqlx::postgres::PgPool;
+use tracing::{debug, error, info};
+
+use crate::db;
+use crate::models::Claims;
+
+// GET /api/favorites - 获取收藏列表
+#[get("/api/favorites")]
+pub async fn get_favorites(
+    query: web::Query<serde_json::Value>,
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+) -> impl Responder {
+    let page = query.get("page").and_then(|v| v.as_i64()).unwrap_or(1).max(1) as i32;
+    let limit = query.get("limit").and_then(|v| v.as_i64()).unwrap_or(10).clamp(1, 100) as i32;
+
+    debug!("获取收藏列表, 页码: {}, 每页条数: {}", page, limit);
+
+    match db::get_favorites_list(pool.get_ref(), claims.user_id, page, limit).await {
+        Ok(response) => {
+            HttpResponse::Ok().json(serde_json::json!({
+                "success": true,
+                "data": response.list,
+                "page": page,
+                "limit": limit,
+                "total": response.total
+            }))
+        }
+        Err(error_msg) => {
+            error!("获取收藏列表失败: {}", error_msg);
+            HttpResponse::Ok().json(serde_json::json!({
+                "success": false,
+                "errcode": 500,
+                "errmsg": error_msg
+            }))
+        }
+    }
+}
+
+// POST /api/favorites/{id} - 添加收藏
+#[post("/api/favorites/{id}")]
+pub async fn add_favorite(
+    path: web::Path<i32>,
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+) -> impl Responder {
+    let weather_id = path.into_inner();
+    info!("添加收藏, weather_id: {}", weather_id);
+
+    match db::set_weather_favorite(pool.get_ref(), weather_id, claims.user_id, true).await {
+        Ok(_) => HttpResponse::Ok().json(serde_json::json!({
+            "success": true,
+            "message": format!("已添加收藏")
+        })),
+        Err(error_msg) => {
+            error!("添加收藏失败: {}", error_msg);
+            let errcode = if error_msg.starts_with("未找到") { 404 } else { 500 };
+            HttpResponse::Ok().json(serde_json::json!({
+                "success": false,
+                "errcode": errcode,
+                "errmsg": error_msg
+            }))
+        }
+    }
+}
+
+// DELETE /api/favorites/{id} - 取消收藏
+#[delete("/api/favorites/{id}")]
+pub async fn remove_favorite(
+    path: web::Path<i32>,
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+) -> impl Responder {
+    let weather_id = path.into_inner();
+    info!("取消收藏, weather_id: {}", weather_id);
+
+    match db::set_weather_favorite(pool.get_ref(), weather_id, claims.user_id, false).await {
+        Ok(_) => HttpResponse::Ok().json(serde_json::json!({
+            "success": true,
+            "message": format!("已取消收藏")
+        })),
+        Err(error_msg) => {
+            error!("取消收藏失败: {}", error_msg);
+            let errcode = if error_msg.starts_with("未找到") { 404 } else { 500 };
+            HttpResponse::Ok().json(serde_json::json!({
+                "success": false,
+                "errcode": errcode,
+                "errmsg": error_msg
+            }))
+        }
+    }
+}

src/handlers/mod.rs

@@ -1,6 +1,7 @@
 // handlers 模块 - 按功能拆分路由处理器
 pub mod admin;
 pub mod auth;
+pub mod favorites;
 pub mod health;
 pub mod payment;
 pub mod static_files;
@@ -16,6 +17,7 @@ pub static TEMPLATES_DIR: Dir = include_dir!("$CARGO_MANIFEST_DIR/templates");
 pub use admin::admin_get_user;
 pub use admin::admin_update_user_payment;
 pub use auth::login;
+pub use favorites::{add_favorite, get_favorites, remove_favorite};
 pub use health::health_check;
 pub use static_files::serve_static_files;
 pub use user::get_current_user_profile;