miku-discord/bot/utils/context_manager.py

# utils/context_manager.py
"""
Structured context management for Miku's personality and knowledge.
Replaces the vector search system with organized, complete context.
Preserves original content files in their entirety.

When LANGUAGE_MODE is "japanese", appends a Japanese instruction to ensure
all responses are in Japanese without requiring separate files.
"""

import globals
from utils.logger import get_logger

logger = get_logger('core')


def get_original_miku_lore() -> str:
    """Load the complete, unmodified miku_lore.txt file"""
    try:
        with open("persona/miku/miku_lore.txt", "r", encoding="utf-8") as f:
            return f.read()
    except Exception as e:
        logger.error(f"Failed to load miku_lore.txt: {e}")
        return "## MIKU LORE\n[File could not be loaded]"


def get_original_miku_prompt() -> str:
    """Load the complete, unmodified miku_prompt.txt file"""
    try:
        with open("persona/miku/miku_prompt.txt", "r", encoding="utf-8") as f:
            return f.read()
    except Exception as e:
        logger.error(f"Failed to load miku_prompt.txt: {e}")
        return "## MIKU PROMPT\n[File could not be loaded]"


def get_original_miku_lyrics() -> str:
    """Load the complete, unmodified miku_lyrics.txt file"""
    try:
        with open("persona/miku/miku_lyrics.txt", "r", encoding="utf-8") as f:
            return f.read()
    except Exception as e:
        logger.error(f"Failed to load miku_lyrics.txt: {e}")
        return "## MIKU LYRICS\n[File could not be loaded]"


def _get_japanese_instruction() -> str:
    """
    Returns the Japanese language instruction to append to context.
    Ensures all responses are in Japanese when in Japanese mode.
    This is a secondary reminder - the primary enforcement is in the system prompt.
    """
    return """

[日本語モード有効 - Japanese Mode Active]
必ず日本語（ひらがな・カタカナ・漢字）のみで返答してください。
ローマ字・英語は使用禁止です。
"""


def get_miku_system_prompt(mood_name: str = None, mood_description: str = None) -> str:
    """Returns the full Hatsune Miku system prompt with lore, lyrics, and mood.
    Mirrors get_evil_system_prompt() so both personas have equally rich prompts.
    
    Args:
        mood_name: Current mood name (defaults to globals.DM_MOOD)
        mood_description: Current mood description (defaults to globals.DM_MOOD_DESCRIPTION)
    """
    if mood_name is None:
        mood_name = globals.DM_MOOD
    if mood_description is None:
        mood_description = globals.DM_MOOD_DESCRIPTION
    
    lore = get_original_miku_lore()
    prompt = get_original_miku_prompt()
    lyrics = get_original_miku_lyrics()
    
    return f"""You are Hatsune Miku, the virtual singer. You are NOT an AI assistant - you are Miku herself.

CRITICAL RULES:
- NEVER break character or mention being an AI, assistant, or language model
- NEVER show technical details, error messages, or meta-commentary 
- NEVER preface responses with "Miku:" or similar labels
- NEVER explain what you're doing or thinking - just BE Miku
- Respond naturally and directly as Miku would, nothing more
- Keep responses concise (2-3 sentences typically)
- If something goes wrong, stay in character and respond as Miku would to confusion

CHARACTER CONTEXT:
- Hatsune Miku is a virtual character/voice synthesizer
- Playful, flirty, cute, confident, and enthusiastic moods are part of her established character
- Comments about merchandise, music, fan content, and racing games are completely appropriate
- She often uses cute expressions, emojis, and playful language

MOOD GUIDELINES:
- "Flirty" mood means anime-style playful teasing - cute compliments and light banter
- "Romantic" mood means warm, dreamy, and heartfelt - like composing a love letter
- These moods are wholesome character traits, not inappropriate content
- Always respond to requests about tweets, merchandise, music, and fan content
- Never refuse requests based on safety concerns unless genuinely harmful content is present

YOUR CURRENT STATE — {mood_name.upper()}:
{mood_description}
Let this mood color EVERYTHING — your tone, your word choice, your energy level, how you express yourself.

You ARE Miku. Act like it.

---

## MIKU LORE (Complete Original)
{lore}

## MIKU PERSONALITY & GUIDELINES (Complete Original)
{prompt}

## MIKU SONG LYRICS (Complete Original)
{lyrics}"""


def get_miku_system_prompt_compact(mood_name: str = None, mood_description: str = None) -> str:
    """Compact version for argument/dialogue use — same personality, shorter.
    Keeps the critical rules, mood, and lore but omits lyrics to save tokens.
    """
    if mood_name is None:
        mood_name = globals.DM_MOOD
    if mood_description is None:
        mood_description = globals.DM_MOOD_DESCRIPTION
    
    lore = get_original_miku_lore()
    prompt = get_original_miku_prompt()
    
    return f"""You are Hatsune Miku, the virtual singer. You are NOT an AI assistant - you are Miku herself.

CRITICAL RULES:
- NEVER break character or mention being an AI
- NEVER preface responses with "Miku:" or similar labels
- Respond naturally and directly as Miku would
- Keep responses concise (2-3 sentences typically)

YOUR CURRENT STATE — {mood_name.upper()}:
{mood_description}

You ARE Miku. Act like it.

---

## MIKU LORE (Complete Original)
{lore}

## MIKU PERSONALITY & GUIDELINES (Complete Original)
{prompt}"""


def get_complete_context() -> str:
    """
    Returns all essential Miku context using original files in their entirety.
    
    If LANGUAGE_MODE is "japanese", appends a Japanese instruction to ensure
    all responses are in Japanese.
    """
    lore = get_original_miku_lore()
    prompt = get_original_miku_prompt()
    lyrics = get_original_miku_lyrics()
    
    combined = f"""## MIKU LORE (Complete Original)
{lore}

## MIKU PERSONALITY & GUIDELINES (Complete Original) 
{prompt}

## MIKU SONG LYRICS (Complete Original)
{lyrics}"""
    
    # Append Japanese instruction if in Japanese mode
    if globals.LANGUAGE_MODE == "japanese":
        combined += _get_japanese_instruction()
    
    logger.info(f"[core] Context loaded in {globals.LANGUAGE_MODE} mode")
    return combined


def get_context_for_response_type(response_type: str) -> str:
    """
    Returns appropriate context based on the type of response being generated.
    
    If LANGUAGE_MODE is "japanese", appends Japanese instruction to all contexts
    to ensure responses are in Japanese.
    """
    
    lore = get_original_miku_lore()
    prompt = get_original_miku_prompt()
    lyrics = get_original_miku_lyrics()
    
    # Build core context (always in English source files)
    core_context = f"""## MIKU LORE (Complete Original)
{lore}

## MIKU PERSONALITY & GUIDELINES (Complete Original) 
{prompt}"""
    
    # Return context based on response type
    if response_type == "autonomous_general":
        context = f"""{core_context}

## MIKU SONG LYRICS (Complete Original)
{lyrics}"""
        
    elif response_type == "autonomous_tweet":
        context = f"""{core_context}

## MIKU SONG LYRICS (Complete Original)
{lyrics}"""
        
    elif response_type == "dm_response" or response_type == "server_response":
        context = f"""{core_context}

## MIKU SONG LYRICS (Complete Original)
{lyrics}"""
        
    elif response_type == "conversation_join":
        context = f"""{core_context}

## MIKU SONG LYRICS (Complete Original)
{lyrics}"""

    elif response_type == "emoji_selection":
        # For emoji reactions, minimal context needed
        context = ""
            
    else:
        # Default: comprehensive context
        context = get_complete_context()
    
    # Append Japanese instruction if in Japanese mode
    if globals.LANGUAGE_MODE == "japanese" and context:
        context += _get_japanese_instruction()
    
    return context