feat: |Worker| support multi language

[dreamhunter2333]

PR Type

enhancement, dependencies

---

Description

• Added multi-language support to the Worker.

• Implemented language-specific messages in English and Chinese.

• Updated dependencies and version numbers.

• Included language context in API requests and responses.

---

Changes walkthrough 📝

	Relevant files
Enhancement	15 files worker.ts Add multi-language support in Worker                                          +31/-16  index.ts Add language support to mail API                                                  +16/-9    zh.ts Add Chinese language messages                                                        +24/-0    en.ts Add English language messages                                                        +24/-0    index.ts Add language support to admin API                                                +4/-1      send_mail_api.ts Add language support to send mail API                                        +4/-1      miniapp.ts Add language support to Telegram miniapp                                  +4/-1      user.ts Add language support to user API                                                  +4/-1      type.ts Define type for locale messages                                                    +20/-0    types.d.ts Add language context to types                                                        +2/-0      i18n.ts Initialize i18n for frontend                                                          +15/-0    index.ts Add language message retrieval logic                                          +16/-0    constants.ts Update version constant                                                                    +1/-1      index.js Include language header in API requests                                    +4/-3      main.js Import i18n in main frontend file                                                +1/-12
Dependencies	5 files pnpm-lock.yaml Update dependencies                                                                            +308/-308 package.json Update version and dependencies                                                    +6/-6      package.json Update version and dependencies                                                    +4/-4      package.json Update version and dependencies                                                    +2/-2      package.json Update version and dependencies                                                    +2/-2
Documentation	1 files CHANGELOG.md Update changelog for version 0.9.0                                              +5/-1
Additional files	2 files pnpm-lock.yaml +208/-284 pnpm-lock.yaml +207/-199

---

Need help?

Type /help how to ... in the comments thread for any questions about PR-Agent usage.

Check out the documentation for more information.

[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 4 🔵🔵🔵🔵⚪

🔒 No security concerns identified

⚡ Recommended focus areas for review Possible Issue The code sets the lang variable from the request headers but does not validate it against supported languages. This could lead to unexpected behavior if an unsupported language is provided. // save language in context const lang = c.req.raw.headers.get("x-lang"); if (lang) { c.set("lang", lang); } const msgs = i18n.getMessages(lang || c.env.DEFAULT_LANG); Error Handling The error messages returned in various parts of the code are now dependent on the i18n messages. Ensure that all possible error scenarios are covered in the i18n files to avoid returning undefined messages. return c.text(msgs.KVNotAvailableMsg, 400); } if (!getBooleanValue(c.env.ENABLE_WEBHOOK)) { return c.text(msgs.WebhookNotEnabledMsg, 403); } } if (!c.env.DB) { return c.text(msgs.DBNotAvailableMsg, 400); } if (!c.env.JWT_SECRET) { return c.text(msgs.JWTSecretNotSetMsg, 400);

[github-actions]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Possible issue	Handle unsupported language cases Ensure that i18n.getMessages handles cases where the lang parameter might not match any supported languages, to avoid potential runtime errors. worker/src/admin_api/index.ts [45] -const msgs = i18n.getMessages(lang); +const msgs = i18n.getMessages(lang) || i18n.getMessages(c.env.DEFAULT_LANG); Suggestion importance[1-10]: 8 __ Why: This suggestion ensures that the application does not encounter runtime errors when an unsupported language is provided. It adds a fallback mechanism to use the default language if the provided language is unsupported, enhancing robustness.	Medium
General	Validate language codes Add a check to ensure c.get("lang") and c.env.DEFAULT_LANG are valid language codes before using them to fetch messages. worker/src/mails_api/index.ts [46] -const lang = c.get("lang") || c.env.DEFAULT_LANG; +const lang = ['en', 'zh'].includes(c.get("lang")) ? c.get("lang") : c.env.DEFAULT_LANG; Suggestion importance[1-10]: 7 __ Why: This suggestion adds validation for language codes, ensuring that only supported languages are used. This prevents potential issues with unsupported languages and improves the reliability of the language selection process.	Medium
	Validate header language input Ensure that c.req.raw.headers.get("x-lang") is validated to be a supported language before setting it in the context. worker/src/worker.ts [30] -const lang = c.req.raw.headers.get("x-lang"); +const lang = ['en', 'zh'].includes(c.req.raw.headers.get("x-lang")) ? c.req.raw.headers.get("x-lang") : c.env.DEFAULT_LANG; Suggestion importance[1-10]: 7 __ Why: This suggestion ensures that the language specified in the request headers is validated before being used. This prevents potential issues with unsupported languages and ensures that the application behaves as expected.	Medium
	Validate locale value Add error handling for cases where i18n.global.locale.value might be undefined or not a supported language. frontend/src/api/index.js [27] -'x-lang': i18n.global.locale.value, +'x-lang': ['en', 'zh'].includes(i18n.global.locale.value) ? i18n.global.locale.value : 'en', Suggestion importance[1-10]: 7 __ Why: This suggestion adds validation for the locale value, ensuring that only supported languages are used. This prevents potential issues with unsupported languages and improves the reliability of the language selection process.	Medium