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# Source code for mindroot.coreplugins.index.utils

    import json
    import shutil
    from pathlib import Path
    from fastapi import HTTPException

    async def load_persona_data(persona_name: str) -> dict:
        """Load persona data from local or shared directory"""
        try:
            persona_path = Path('personas/local') / persona_name / 'persona.json'
            if not persona_path.exists():
                persona_path = Path('personas/shared') / persona_name / 'persona.json'

            if not persona_path.exists():
                return {}

            with open(persona_path, 'r') as f:
                return json.load(f)
        except json.JSONDecodeError:
            raise HTTPException(status_code=500, detail=f"Invalid JSON in persona file: {persona_name}")

    async def load_agent_data(agent_name: str) -> dict:
        """Load agent data from local or shared directory"""
        try:
            agent_path = Path('data/agents/local') / agent_name / 'agent.json'
            if not agent_path.exists():
                agent_path = Path('data/agents/shared') / agent_name / 'agent.json'
                if not agent_path.exists():
                    raise FileNotFoundError(f'Agent {agent_name} not found')

            with open(agent_path, 'r') as f:
                agent_data = json.load(f)

            # Validate required fields
            if 'name' not in agent_data:
                raise ValueError(f'Agent {agent_name} missing required field: name')

            # Get the persona data if specified
            if 'persona' in agent_data:
                persona_data = await load_persona_data(agent_data['persona'])
                agent_data['persona'] = persona_data

            return agent_data
        except json.JSONDecodeError:
            raise HTTPException(status_code=500, detail=f"Invalid JSON in agent file: {agent_name}")

    def ensure_index_structure(index_dir: Path) -> None:
        """Ensure index directory has the required structure"""
        (index_dir / 'personas').mkdir(exist_ok=True)

    def install_persona(source_dir: Path, persona_name: str) -> None:
        """Install a persona directory to the correct location"""
        target_dir = Path('personas/local') / persona_name
        if target_dir.exists():
            shutil.rmtree(target_dir)
        target_dir.parent.mkdir(parents=True, exist_ok=True)
        shutil.copytree(source_dir, target_dir)