细节调整及优化(26.8.3)
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@@ -9,10 +9,10 @@ use axum::{
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Router,
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};
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use serde::{Deserialize, Serialize};
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use tauri::{AppHandle, Emitter, Manager};
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use tauri::{AppHandle, Emitter};
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use super::engine::DownloadEngine;
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use super::task::DownloadTask;
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use super::task::{DownloadTask, TaskStatus};
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/// 扩展 HTTP API 服务器
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pub struct ExtensionServer;
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@@ -114,6 +114,14 @@ async fn create_download(
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return Err((StatusCode::UNAUTHORIZED, Json(ErrorResponse { error: "未授权".into() })));
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}
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// 去重:同 URL 已有非终态任务(活跃/排队/暂停)时直接返回既有任务,
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// 避免浏览器重复转发同一下载造成重复下载
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if let Some(existing) = state.engine.get_tasks().into_iter().find(|t| {
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matches!(t.status, TaskStatus::Active | TaskStatus::Queued | TaskStatus::Paused) && t.url == req.url
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}) {
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return Ok(Json(CreateDownloadResponse { id: existing.id }));
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}
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match state.engine.add_task(req.url, req.filename, req.dir, req.headers, true).await {
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Ok(id) => {
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// 浏览器扩展发起下载:置前主窗口并通知前端跳到下载画面(替代原桌面通知)
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@@ -146,7 +154,11 @@ async fn remove_download(
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return Err((StatusCode::UNAUTHORIZED, Json(ErrorResponse { error: "未授权".into() })));
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}
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match state.engine.remove_task(&id, false) {
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Ok(()) => Ok(StatusCode::NO_CONTENT),
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Ok(()) => {
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// 通知前端刷新任务列表(扩展删除时前端无从感知,否则列表残留已删除任务)
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let _ = state.app_handle.emit(crate::constants::events::DOWNLOAD_REMOVED, serde_json::json!({ "id": id }));
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Ok(StatusCode::NO_CONTENT)
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}
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Err(e) => Err((StatusCode::NOT_FOUND, Json(ErrorResponse { error: e }))),
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}
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}
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