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miku-discord/readmes/JAPANESE_MODE_WEB_UI_COMPLETE.md

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Japanese Language Mode - Complete Implementation Summary

✅ Implementation Complete!

Successfully implemented Japanese language mode for the Miku Discord bot with a full Web UI integration.

📋 What Was Built

Backend Components (Python)

Files Modified:

  1. globals.py

    • Added JAPANESE_TEXT_MODEL = "swallow" constant
    • Added LANGUAGE_MODE = "english" global variable

  2. utils/context_manager.py

    • Added get_japanese_miku_prompt() function
    • Added get_japanese_miku_lore() function
    • Added get_japanese_miku_lyrics() function
    • Updated get_complete_context() to check language mode
    • Updated get_context_for_response_type() to check language mode

  3. utils/llm.py

    • Updated query_llama() model selection logic
    • Now checks LANGUAGE_MODE and selects Swallow when Japanese

  4. api.py

    • Added GET /language endpoint
    • Added POST /language/toggle endpoint
    • Added POST /language/set?language=X endpoint

Files Created:

  1. miku_prompt_jp.txt - Japanese-mode prompt with language instruction
  2. miku_lore_jp.txt - Japanese-mode lore
  3. miku_lyrics_jp.txt - Japanese-mode lyrics

Frontend Components (HTML/JavaScript)

File Modified: bot/static/index.html

  1. Tab Navigation (Line ~660)

    • Added "⚙️ LLM Settings" tab between Status and Image Generation
    • Updated all subsequent tab IDs (tab4→tab5, tab5→tab6, etc.)

  2. LLM Settings Tab (Line ~1177)

    • Language Mode toggle section with blue highlight
    • Current status display showing language and model
    • Information panel explaining how it works
    • Two-column layout for better organization

  3. JavaScript Functions (Line ~2320)

    • refreshLanguageStatus() - Fetches and displays current language
    • toggleLanguageMode() - Switches between English and Japanese

  4. Page Initialization (Line ~1617)

    • Added refreshLanguageStatus() to DOMContentLoaded event
    • Ensures language status is loaded when page opens

🎯 How It Works

Language Switching Flow

User clicks "Toggle Language" button
         ↓
toggleLanguageMode() sends POST to /language/toggle
         ↓
API updates globals.LANGUAGE_MODE ("english" ↔ "japanese")
         ↓
Next message:
  - If Japanese: Use Swallow model + miku_prompt_jp.txt
  - If English: Use llama3.1 model + miku_prompt.txt
         ↓
Response generated in selected language
         ↓
UI updates to show new language and model

Design Philosophy

No Full Translation Needed!

  • English context helps model understand Miku's personality
  • Language instruction appended to prompt ensures Japanese response
  • Swallow model is trained to follow instructions and respond in Japanese
  • Minimal maintenance - one source of truth for prompts

🖥️ Web UI Features

LLM Settings Tab (tab4)

Language Mode Section

  • Blue-highlighted toggle button
  • Current language display in cyan text
  • Explanation of English vs Japanese modes
  • Easy-to-understand bullet points

Status Display

  • Shows current language (English or 日本語)
  • Shows active model (llama3.1 or swallow)
  • Shows available languages
  • Refresh button to sync with server

Information Panel

  • Orange-highlighted info section
  • Explains how each language mode works
  • Notes about global scope and conversation history

Button Styling

  • Toggle Button: Blue (#4a7bc9) with cyan border, bold, 1rem font
  • Refresh Button: Standard styling, lightweight
  • Hover effects work with existing CSS
  • Fully responsive design

📡 API Endpoints

GET /language

Returns current language status:

{
  "language_mode": "english",
  "available_languages": ["english", "japanese"],
  "current_model": "llama3.1"
}

POST /language/toggle

Toggles between languages:

{
  "status": "ok",
  "language_mode": "japanese",
  "model_now_using": "swallow",
  "message": "Miku is now speaking in JAPANESE!"
}

POST /language/set?language=japanese

Sets specific language:

{
  "status": "ok",
  "language_mode": "japanese",
  "model_now_using": "swallow",
  "message": "Miku is now speaking in JAPANESE!"
}

🔧 Technical Details

Component English Japanese
Model llama3.1 swallow
Prompt miku_prompt.txt miku_prompt_jp.txt
Lore miku_lore.txt miku_lore_jp.txt
Lyrics miku_lyrics.txt miku_lyrics_jp.txt
Language Instruction None "Respond entirely in Japanese"

Model Selection Priority

  1. Evil Mode takes highest priority (uses DarkIdol)
  2. Language Mode second (uses Swallow for Japanese)
  3. Default is English mode (uses llama3.1)

✨ Features

✅ Complete Language Toggle - Switch English ↔ Japanese instantly ✅ Automatic Model Switching - Swallow loads when needed, doesn't interfere with other models ✅ Web UI Integration - Beautiful, intuitive interface with proper styling ✅ Status Display - Shows current language and model in real-time ✅ Real-time Updates - UI refreshes immediately on page load and after toggle ✅ Backward Compatible - Works with all existing features (moods, evil mode, etc.) ✅ Conversation Continuity - History preserved across language switches ✅ Global Scope - One setting affects all servers and DMs ✅ Notification Feedback - User gets confirmation when language changes

🧪 Testing Guide

Quick Test (Via API)

# Check current language
curl http://localhost:8000/language

# Toggle to Japanese
curl -X POST http://localhost:8000/language/toggle

# Set to English specifically
curl -X POST "http://localhost:8000/language/set?language=english"

Full UI Test

  1. Open web UI at http://localhost:8000/static/
  2. Go to "⚙️ LLM Settings" tab (between Status and Image Generation)
  3. Click "🔄 Toggle Language (English ↔ Japanese)" button
  4. Observe current language changes in display
  5. Click "🔄 Refresh Status" to sync
  6. Send a message to Miku in Discord
  7. Check if response is in Japanese
  8. Toggle back and verify English responses

📁 Files Summary

Modified Files

  • bot/globals.py - Added language constants
  • bot/utils/context_manager.py - Added language-aware context loaders
  • bot/utils/llm.py - Added language-based model selection
  • bot/api.py - Added 3 new language endpoints
  • bot/static/index.html - Added LLM Settings tab and functions

Created Files

  • bot/miku_prompt_jp.txt - Japanese prompt variant
  • bot/miku_lore_jp.txt - Japanese lore variant
  • bot/miku_lyrics_jp.txt - Japanese lyrics variant
  • JAPANESE_MODE_IMPLEMENTATION.md - Technical documentation
  • JAPANESE_MODE_QUICK_START.md - Quick reference guide
  • WEB_UI_LANGUAGE_INTEGRATION.md - Web UI documentation
  • JAPANESE_MODE_WEB_UI_SUMMARY.md - This file

🚀 Future Enhancements

Phase 2 Ideas

  1. Per-Server Language - Store language preference in servers_config.json
  2. Per-Channel Language - Different channels can have different languages
  3. Language Auto-Detection - Detect user's language and auto-switch
  4. More Languages - Easily add other languages (Spanish, French, etc.)
  5. Language-Specific Moods - Different mood descriptions per language
  6. Language Status in Main Status Tab - Show language in status overview
  7. Language Preference Persistence - Remember user's preferred language

⚠️ Important Notes

  1. Swallow Model must be available in llama-swap with name "swallow"
  2. Language Mode is Global - affects all servers and DMs
  3. Evil Mode Takes Priority - evil mode's model selection wins if both active
  4. Conversation History - stores both English and Japanese messages seamlessly
  5. No Translation Burden - English prompts work fine with Swallow

📚 Documentation Files

  1. JAPANESE_MODE_IMPLEMENTATION.md - Technical architecture and design decisions
  2. JAPANESE_MODE_QUICK_START.md - API endpoints and quick reference
  3. WEB_UI_LANGUAGE_INTEGRATION.md - Detailed Web UI changes
  4. This file - Complete summary

✅ Checklist

  • Backend language mode support
  • Model switching logic
  • Japanese context files created
  • API endpoints implemented
  • Web UI tab added
  • JavaScript functions added
  • Page initialization updated
  • Styling and layout finalized
  • Error handling implemented
  • Documentation completed

🎉 You're Ready!

The Japanese language mode is fully implemented and ready to use:

  1. Visit the Web UI
  2. Go to "⚙️ LLM Settings" tab
  3. Click the toggle button
  4. Miku will now respond in Japanese!

Enjoy your bilingual Miku! 🎤✨

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