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feat: add multi-language (i18n) support for vendor dashboard and storefront

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- Add database fields for language preferences:
  - Vendor: dashboard_language, storefront_language, storefront_languages
  - User: preferred_language
  - Customer: preferred_language

- Add language middleware for request-level language detection:
  - Cookie-based persistence
  - Browser Accept-Language fallback
  - Vendor storefront language constraints

- Add language API endpoints (/api/v1/language/*):
  - POST /set - Set language preference
  - GET /current - Get current language info
  - GET /list - List available languages
  - DELETE /clear - Clear preference

- Add i18n utilities (app/utils/i18n.py):
  - JSON-based translation loading
  - Jinja2 template integration
  - Language resolution helpers

- Add reusable language selector macros for templates
- Add languageSelector() Alpine.js component
- Add translation files (en, fr, de, lb) in static/locales/
- Add architecture rules documentation for language implementation
- Update marketplace-product-detail.js to use native language names

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Samir Boulahtit
2025-12-13 22:36:09 +01:00
parent d21cd366dc
commit d2b05441fc
30 changed files with 4615 additions and 33 deletions
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64
app/templates/vendor/partials/header.html vendored
View File

@@ -36,6 +36,70 @@
</button>
</li>
<!-- Language selector -->
<li class="relative" x-data="{
isLangOpen: false,
currentLang: '{{ request.state.language|default("fr") }}',
languages: ['en', 'fr', 'de', 'lb'],
languageNames: { 'en': 'English', 'fr': 'Francais', 'de': 'Deutsch', 'lb': 'Letzebuerg' },
languageFlags: { 'en': 'gb', 'fr': 'fr', 'de': 'de', 'lb': 'lu' },
async setLanguage(lang) {
if (lang === this.currentLang) {
this.isLangOpen = false;
return;
}
try {
const response = await fetch('/api/v1/language/set', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ language: lang })
});
if (response.ok) {
this.currentLang = lang;
window.location.reload();
}
} catch (error) {
console.error('Failed to set language:', error);
}
this.isLangOpen = false;
}
}">
<button
@click="isLangOpen = !isLangOpen"
@click.outside="isLangOpen = false"
class="p-1 rounded-md focus:outline-none focus:shadow-outline-purple"
aria-label="Change language"
>
<span class="fi text-lg" :class="'fi-' + languageFlags[currentLang]"></span>
</button>
<div
x-show="isLangOpen"
x-cloak
x-transition:enter="transition ease-out duration-100"
x-transition:enter-start="transform opacity-0 scale-95"
x-transition:enter-end="transform opacity-100 scale-100"
x-transition:leave="transition ease-in duration-75"
x-transition:leave-start="transform opacity-100 scale-100"
x-transition:leave-end="transform opacity-0 scale-95"
class="absolute right-0 w-44 mt-2 bg-white dark:bg-gray-700 rounded-lg shadow-lg border border-gray-100 dark:border-gray-600 py-1 z-50"
>
<template x-for="lang in languages" :key="lang">
<button
@click="setLanguage(lang)"
type="button"
class="flex items-center gap-3 w-full px-4 py-2 text-sm font-medium transition-colors"
:class="currentLang === lang
? 'bg-purple-50 dark:bg-purple-900/20 text-purple-700 dark:text-purple-300'
: 'text-gray-700 dark:text-gray-300 hover:bg-gray-100 dark:hover:bg-gray-600'"
>
<span class="fi" :class="'fi-' + languageFlags[lang]"></span>
<span x-text="languageNames[lang]"></span>
<span x-show="currentLang === lang" x-html="$icon('check', 'w-4 h-4 ml-auto')" class="text-purple-600 dark:text-purple-400"></span>
</button>
</template>
</div>
</li>
<!-- Notifications menu -->
<li class="relative">
<button class="relative align-middle rounded-md focus:outline-none focus:shadow-outline-purple"