fix #34: ID冲突时不要把原有的歌曲删掉

[Starrah]

Fix #34 .

[gemini-code-assist]

Summary of Changes

Hello @Starrah, 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!

此拉取请求旨在解决一个关键错误，即在导入歌曲时，如果新歌曲的ID与现有歌曲冲突，并且导入过程失败，系统会错误地删除原有的歌曲。通过引入一个条件检查，此修复确保了只有在歌曲创建步骤成功后才考虑删除操作，从而有效保护了现有数据不被意外删除。

Highlights

• 修复导入歌曲时ID冲突导致原有歌曲被删除的问题: 在导入歌曲过程中，如果发生ID冲突且导入失败，现在会检查导入步骤。如果失败发生在创建乐曲之前（即乐曲XML未成功创建），则不会尝试删除该乐曲。这解决了在ID冲突时错误删除原有歌曲的问题，避免了数据丢失。

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

这个 PR 修复了一个在导入过程中因 ID 冲突可能导致原有歌曲被误删的严重 bug。修改逻辑正确，通过检查导入步骤，只在乐曲创建成功后的步骤中失败才执行删除回滚，有效避免了问题。此外，我建议对回滚操作中的删除失败情况增加错误处理，而不是静默忽略，以提高系统的健壮性和可维护性。

[gemini-code-assist]

在回滚操作中，删除部分导入的乐曲时，如果 api.DeleteMusic 调用失败，错误会被静默地忽略。这可能会导致系统中残留部分导入的数据，而用户却不知情。建议在 catch 块中至少记录一条错误日志，或者向用户显示一个警告信息，告知清理失败。

          } catch (deleteError: any) {
            console.error(`Failed to delete music ${music.id} during rollback:`, deleteError);
            const message = deleteError?.error?.message || deleteError?.error?.detail || deleteError?.message || deleteError?.toString();
            errors.value.push({ level: MessageLevel.Warning, message: `Failed to clean up partially imported music: ${message}`, name: music.name });
          }