[Feature Request] WebDAV 同步数据

[adamwangxx]

如题，现在数据备份需要每次手动导出，希望是不是能增加一个 WebDAV 定时的备份功能。

[github-actions]

Thank you for this feature suggestion.

Feasibility assessment:
This is a meaningful addition. The current codebase only supports manual CSV export of usage logs, and there is no automated backup infrastructure. Adding WebDAV scheduled backup would require building new components.

Related existing code:

• `src/actions/usage-logs.ts` (lines 403-434) — existing manual CSV export for usage logs (`downloadUsageLogsExport`), which could serve as a reference for data serialization
• `src/instrumentation.ts` (lines 159-189) — `setInterval`-based scheduler pattern already used for cloud price sync, log cleanup, and endpoint probing
• `src/lib/notification/notification-queue.ts` — Bull queue with cron scheduling for notification tasks, which could be extended for backup jobs
• `src/drizzle/schema.ts` — 19 database tables (users, keys, providers, provider_endpoints, message_request, system_settings, usage_ledger, audit_log, etc.) that would need to be included in a backup

Implementation considerations:

• Data scope: The project stores both configuration data (providers, keys, settings) and operational data (usage logs, audit logs, message requests). A backup solution would need to decide which tables to include and handle the large volume of operational data.
• Scheduling: The project already has scheduling patterns (`setInterval` in `instrumentation.ts` and Bull queue cron jobs). Either approach could be adapted for periodic WebDAV uploads.
• Configuration: System settings are managed through the `system_settings` table (`src/drizzle/schema.ts` lines 723-868) and configured via `src/app/[locale]/settings/config/page.tsx`. WebDAV endpoint, credentials, and schedule would fit here.
• No WebDAV client library is currently in the project. A dependency like `webdav` would need to be added.
• Security: Credentials for the WebDAV server would need secure storage (environment variables or encrypted fields), not plain text in the database.

Dependencies affected:

• Database layer (`src/drizzle/schema.ts`, `src/repository/`) — new backup configuration fields
• Settings UI (`src/app/[locale]/settings/config/`) — new configuration form sections
• Scheduling layer (`src/instrumentation.ts` or `src/lib/notification/`) — new backup job registration
• A new backup module for data serialization and WebDAV upload

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Automated response from Claude AI

[ding113]

感谢建议。目前 CCH 正在酝酿重构版本，我们会在新版本的规划中考虑这个建议。