# Walkthrough - Internationalization Updates

I have implemented full internationalization support for the "Focus Mode", "Tasks" page calendar, and "Week" page.

## Changes

### 1. Translation Infrastructure
- Created `useDateLocale` hook `client/src/hooks/use-date-locale.ts` to automatically provide the correct `date-fns` locale (English or German) based on the active language.
- Updated `en.json` and `de.json` with new translation keys for Focus Mode.

### 2. Focus Mode (`client/src/components/FocusMode.tsx`)
- Replaced all hardcoded text (Greetings, Statistics headers, "View All" card, "Focus List" headers) with dynamic translations.
- Greeting now correctly switches between "Good morning/afternoon/evening" and "Guten Morgen/Tag/Abend" based on time of day and language.

### 3. Tasks Calendar (`client/src/components/TasksWithCalendar.tsx`)
- Fixed previous syntax errors in the component.
- Implemented `useDateLocale` to format the calendar dates (Day names, Month names) in the selected language.
- Preserved all original functionality (Drag & Drop, Context Menus).

### 4. Week View (`client/src/components/WeekListView.tsx`)
- Implemented `useDateLocale` to format the week range and day headers in the selected language.
- Added translation hooks for all static text.

### 5. Settings & Persistence
- Verified that language selection in Settings is persisted to `localStorage`.
- **Note**: A page reload might be required for date formats to fully update if the language is changed dynamically, although the text should update immediately.

## Verification

### Automated Verification
- Browser tests confirmed that changing the language in Settings updates the UI (Sidebar).
- Persistence was verified (Sidebar remained in German after reload).
- `FocusMode` and Calendar translations were updated to use the robust locale hook.

### Manual Verification Steps
1. Go to **Settings** and switch language to **German**.
2. **Reload the page** (ensure persistence works).
3. Check **Focus Mode**: Greeting should be "Guten Tag" (depending on time).
4. Check **Tasks**: Calendar days should be "Mo, Di, Mi...".
5. Check **Week**: Calendar headers should be "Mo, Di, Mi...".

![Settings Page](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/settings_page_1765294338152.png)
![German Focus Mode](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/focus_german_clean_1765295409984.png)
![German Tasks Calendar](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/tasks_german_clean_1765295427185.png)
![German Week View](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/week_german_clean_1765295450344.png)
![German Sidebar "Fokus"](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/sidebar_focus_german_1765295602884.png)
![Gamification Level Bar](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/sidebar_check_1765296520834.png)
![Energy Task Verification](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/verified_gamification_1765296371775.png)

### 6. Gamification & Advanced Tasks Verification
- **Goals API**: Verified `POST /api/goals` handles creation correctly.
- **Achievements Page**: Verified UI for Goals and Analytics.
- **Energy & Duration**: Fixed a bug where Energy Level and Duration were not persisting. Verified "High Energy" badge appears on task card.

![Achievements Page](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/final_achievements_page_1765298273635.png)
![Tasks Page with High Energy Badge](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/final_tasks_page_1765298260385.png)

### 7. Gamification Polish
- **Translations**: Fully translated Achievements page, including "from last week" and Goal placeholders.
- **UI Improvements**: 
    - Fixed "Double Flame" issue.
    - Made Gamification Bar clickable to show **Level Details Modal** with correct translated reward text ("Erweiterte Analysen...").
    - Enabled **Monthly** analytics tab with data fetching.
- **Level Logic**: Implemented consistent XP/Level calculation logic.

![German Level Details Modal](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/gamification_modal_german_1765312810755.png)
*(Note: Latest translations for modal reward text and "from last week" are applied in code and build, requiring container restart to view)*
![German Achievements Page](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/achievements_page_german_1765312826743.png)

### 8. Analytics & Roadmap
- **Analytics Fixes**: 
    - Enabled **Monthly** view (previously hidden).
    - Fully translated all chart labels ("Mo/Di", "Jan/Feb").
    - **Refined UI**: Added Glassmorphism Tooltips and Calendar Week ("KW") labels for monthly view.
    - **Label Fix**: Implemented robust handling for both legacy "Week X" data and new "KW 50" numeric data.
    - **CRITICAL FIX**: Rebuilt Docker image to ensure server-side API changes Propagated.
- **Reward Shop (Implemented)**:
    - Added `rewards` and `user_rewards` tables.
    - Implemented `POST /api/rewards/buy` with XP deduction logic.
    - Created `RewardCard` UI with "Buy" / "Owned" states.
    - Added "Rewards" tab to Achievements page.
    - **Note**: Database schema update (`npm run db:push`) is pending (requires manual confirmation).
- **Roadmap**: Created .

### 9. Calendar Refinements
- **Week Numbers**: Added "KW {Number}" badge to the Calendar Header.
- **Grid View**: Added Week Number indicators to the start of each week (Mondays) in the calendar grid.

![Refined Analytics & Calendar](/Users/paul/.gemini/antigravity/brain/27001a49-c79d-4fe4-a719-5cc8b2b01d7f/calendar_week_numbers_fixed_1765315289351.png)