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Summary of ChangesHello @kazukokawagawa, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request significantly upgrades the application's download system, focusing on reliability, performance, and user control. Key improvements include enabling concurrent downloads, ensuring download tasks persist across application restarts, and providing a mechanism to cancel ongoing downloads. These changes aim to deliver a more stable and user-friendly download experience. Highlights
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Code Review
This pull request introduces a significant and well-executed refactoring of the download management system. Key improvements include support for concurrent downloads, download cancellation, and robust state restoration on application startup. The code has been made more modular and readable, particularly by extracting the complex lyric processing logic into a separate method. My review focuses on further improving type safety and streamlining some of the new logic for better maintainability.
| const item = downloadItems.get(songId); | ||
| if (item) { | ||
| item.cancel(); | ||
| downloadItems.delete(songId); |
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The downloadItems.delete(songId) call here is redundant. The finally block in the download-file handler already ensures that the item is deleted from downloadItems after the download completes, fails, or is cancelled. Removing this line will centralize the cleanup logic and prevent potential confusion. The item.cancel() call will cause the download() promise to reject, which will trigger the finally block in download-file.
| // 1. 重置下载中状态为等待中 (应用重启后的恢复) | ||
| dataStore.downloadingSongs.forEach((item) => { | ||
| if (item.status === "downloading") { | ||
| dataStore.updateDownloadStatus(item.song.id, "waiting"); | ||
| dataStore.updateDownloadProgress(item.song.id, 0, "0MB", "0MB"); | ||
| } | ||
| }); | ||
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| // 2. 将等待中的任务加入队列 | ||
| dataStore.downloadingSongs.forEach((item) => { | ||
| if (item.status === "waiting") { | ||
| const isQueued = this.queue.some((t) => t.song.id === item.song.id); | ||
| const isActive = this.activeDownloads.has(item.song.id); | ||
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| if (!isQueued && !isActive) { | ||
| this.queue.push({ song: item.song, quality: item.quality }); | ||
| } | ||
| } | ||
| }); |
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The init method currently iterates over dataStore.downloadingSongs twice. This can be optimized by combining the two loops into one. This improves both performance and readability by processing each item in a single pass.
// 1. 重置下载中状态为等待中 (应用重启后的恢复) 并加入队列
dataStore.downloadingSongs.forEach((item) => {
let isWaiting = item.status === "waiting";
if (item.status === "downloading") {
dataStore.updateDownloadStatus(item.song.id, "waiting");
dataStore.updateDownloadProgress(item.song.id, 0, "0MB", "0MB");
isWaiting = true;
}
if (isWaiting) {
const isQueued = this.queue.some((t) => t.song.id === item.song.id);
const isActive = this.activeDownloads.has(item.song.id);
if (!isQueued && !isActive) {
this.queue.push({ song: item.song, quality: item.quality });
}
}
});| } catch (error) { | ||
| console.error("Download failed:", error); |
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For better type safety, it's recommended to type error as unknown in catch blocks. This ensures that you perform necessary type checks before accessing properties on the error object.
} catch (error: unknown) {
console.error("Download failed:", error);
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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/gemini review |
| .filter((item: any) => item.login !== "type-bot" && item.type !== "Bot") | ||
| .map((item: any) => ({ |
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为了提高代码的可读性和可维护性，建议为从 GitHub API 获取的贡献者数据定义一个明确的类型（例如 GithubContributor），而不是使用 any。这有助于类型检查并使数据结构更清晰。
| this.failSkipCount++; | ||
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| // 连续跳过 3 首直接暂停 | ||
| if (this.failSkipCount >= 3) { |
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这里的数字 3 是一个“魔术数字”。建议将其定义为一个具有描述性名称的常量（例如 MAX_CONSECUTIVE_FAIL_SKIPS），以提高代码的可读性，并使其在将来更易于修改。
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