"""
Router de testes de gestão de arquivos
Endpoints para testar criação, listagem e download de arquivos
"""
from fastapi import APIRouter, HTTPException
from typing import List
from pathlib import Path

from api.models.requests import FileCreateRequest
from api.models.responses import FileInfoResponse, MessageResponse
from api.utils.logger import setup_logger

router = APIRouter()
logger = setup_logger(__name__)


@router.post("/create", response_model=MessageResponse)
async def create_test_file(request: FileCreateRequest):
    """
    **Cria arquivo de teste.**

    Útil para testar sistema de arquivos e permissões.
    """
    try:
        from files.files_manager import FilesManager

        fm = FilesManager()

        # Criar arquivo
        filepath = fm.save_text_file(
            content=request.content,
            filename=request.filename,
            acordao_id=request.acordao_id
        )

        logger.info(f"✅ Test file created: {filepath}")

        return MessageResponse(
            message="File created successfully",
            details={
                "filepath": str(filepath),
                "filename": request.filename,
                "size": len(request.content)
            }
        )

    except Exception as e:
        logger.error(f"Error creating file: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/list", response_model=List[FileInfoResponse])
async def list_files(acordao_id: str = None, limit: int = 100):
    """
    **Lista arquivos.**

    Args:
        acordao_id: Filtrar por ID de acórdão (opcional)
        limit: Limite de resultados
    """
    try:
        from files.files_manager import FilesManager

        fm = FilesManager()

        files = fm.list_files(
            acordao_id=acordao_id,
            limit=limit
        )

        return [
            FileInfoResponse(
                filename=f["filename"],
                size_bytes=f["size_bytes"],
                hash_sha256=f.get("hash", "unknown"),
                created_at=f.get("created_at")
            )
            for f in files
        ]

    except Exception as e:
        logger.error(f"Error listing files: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/info/{filename}")
async def get_file_info(filename: str):
    """
    **Informações sobre um arquivo específico.**
    """
    try:
        from files.files_manager import FilesManager

        fm = FilesManager()

        info = fm.get_file_info(filename)

        if not info:
            raise HTTPException(status_code=404, detail="File not found")

        return info

    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error getting file info: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.delete("/{filename}")
async def delete_file(filename: str):
    """
    **Deleta arquivo.**

    Args:
        filename: Nome do arquivo a deletar
    """
    try:
        from files.files_manager import FilesManager

        fm = FilesManager()

        success = fm.delete_file(filename)

        if success:
            logger.info(f"🗑️  File deleted: {filename}")
            return MessageResponse(
                message="File deleted successfully",
                details={"filename": filename}
            )
        else:
            raise HTTPException(status_code=404, detail="File not found")

    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error deleting file: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/storage/info")
async def storage_info():
    """
    **Informações sobre armazenamento.**

    Retorna uso de disco e estatísticas.
    """
    try:
        from files.files_manager import FilesManager
        import shutil

        fm = FilesManager()

        # Pegar info de disco
        total, used, free = shutil.disk_usage(fm.base_path)

        return {
            "base_path": str(fm.base_path),
            "storage": {
                "total_gb": total / (1024**3),
                "used_gb": used / (1024**3),
                "free_gb": free / (1024**3),
                "percent_used": (used / total) * 100
            },
            "total_files": len(list(Path(fm.base_path).rglob("*.*")))
        }

    except Exception as e:
        logger.error(f"Error getting storage info: {e}")
        raise HTTPException(status_code=500, detail=str(e))