from fastapi import APIRouter, HTTPException, Depends
from typing import List, Optional, Dict, Any
from pydantic import BaseModel, validator
import urllib.parse

from utils.logger import logger
from utils.auth_utils import get_current_user_id_from_jwt
from .domain.entities import MCPCredential, MCPCredentialProfile
from .domain.exceptions import (
    CredentialNotFoundError, ProfileNotFoundError,
    CredentialAccessDeniedError, ProfileAccessDeniedError
)

router = APIRouter()

credential_manager = None


class StoreCredentialRequest(BaseModel):
    mcp_qualified_name: str
    display_name: str
    config: Dict[str, Any]
    
    @validator('config')
    def validate_config_not_empty(cls, v):
        if not v:
            raise ValueError('Config cannot be empty')
        return v


class StoreCredentialProfileRequest(BaseModel):
    mcp_qualified_name: str
    profile_name: str
    display_name: str
    config: Dict[str, Any]
    is_default: bool = False
    
    @validator('config')
    def validate_config_not_empty(cls, v):
        if not v:
            raise ValueError('Config cannot be empty')
        return v


class CredentialResponse(BaseModel):
    credential_id: str
    mcp_qualified_name: str
    display_name: str
    config_keys: List[str]
    is_active: bool
    last_used_at: Optional[str]
    created_at: str
    updated_at: str


class CredentialProfileResponse(BaseModel):
    profile_id: str
    mcp_qualified_name: str
    profile_name: str
    display_name: str
    config_keys: List[str]
    is_active: bool
    is_default: bool
    last_used_at: Optional[str]
    created_at: str
    updated_at: str


class SetDefaultProfileRequest(BaseModel):
    profile_id: str


class TestCredentialResponse(BaseModel):
    success: bool
    message: str
    error_details: Optional[str] = None


@router.post("/credentials", response_model=CredentialResponse)
async def store_mcp_credential(
    request: StoreCredentialRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.info(f"Storing credential for {request.mcp_qualified_name} for user {user_id}")
    
    try:
        credential_id = await credential_manager.store_credential(
            user_id,
            request.mcp_qualified_name,
            request.display_name,
            request.config
        )
        
        credential = await credential_manager.get_credential(user_id, request.mcp_qualified_name)
        if not credential:
            raise HTTPException(status_code=500, detail="Failed to retrieve stored credential")
        
        return CredentialResponse(
            credential_id=credential.credential_id,
            mcp_qualified_name=credential.mcp_qualified_name,
            display_name=credential.display_name,
            config_keys=list(credential.config.keys()),
            is_active=credential.is_active,
            last_used_at=credential.last_used_at.isoformat() if credential.last_used_at and hasattr(credential.last_used_at, 'isoformat') else (str(credential.last_used_at) if credential.last_used_at else None),
            created_at=credential.created_at.isoformat() if credential.created_at and hasattr(credential.created_at, 'isoformat') else (str(credential.created_at) if credential.created_at else ""),
            updated_at=credential.updated_at.isoformat() if credential.updated_at and hasattr(credential.updated_at, 'isoformat') else (str(credential.updated_at) if credential.updated_at else "")
        )
    except Exception as e:
        logger.error(f"Error storing credential: {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to store credential: {str(e)}")

@router.get("/credentials", response_model=List[CredentialResponse])
async def get_user_credentials(
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.info(f"Getting credentials for user {user_id}")
    
    try:
        credentials = await credential_manager.get_user_credentials(user_id)
        
        logger.debug(f"Found {len(credentials)} credentials for user {user_id}")
        for cred in credentials:
            logger.debug(f"Credential: '{cred.mcp_qualified_name}' (ID: {cred.credential_id})")
        
        return [
            CredentialResponse(
                credential_id=cred.credential_id,
                mcp_qualified_name=cred.mcp_qualified_name,
                display_name=cred.display_name,
                config_keys=list(cred.config.keys()),
                is_active=cred.is_active,
                last_used_at=cred.last_used_at.isoformat() if cred.last_used_at and hasattr(cred.last_used_at, 'isoformat') else (str(cred.last_used_at) if cred.last_used_at else None),
                created_at=cred.created_at.isoformat() if cred.created_at and hasattr(cred.created_at, 'isoformat') else (str(cred.created_at) if cred.created_at else ""),
                updated_at=cred.updated_at.isoformat() if cred.updated_at and hasattr(cred.updated_at, 'isoformat') else (str(cred.updated_at) if cred.updated_at else "")
            )
            for cred in credentials
        ]
    except Exception as e:
        logger.error(f"Error getting user credentials: {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to get credentials: {str(e)}")

@router.delete("/credentials/{mcp_qualified_name:path}")
async def delete_mcp_credential(
    mcp_qualified_name: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    try:
        decoded_name = urllib.parse.unquote(mcp_qualified_name)
        logger.info(f"Deleting credential for '{decoded_name}' (raw: '{mcp_qualified_name}') for user {user_id}")
        
        existing_credential = await credential_manager.get_credential(user_id, decoded_name)
        if not existing_credential:
            logger.warning(f"Credential not found: '{decoded_name}' for user {user_id}")
            raise HTTPException(status_code=404, detail=f"Credential not found: {decoded_name}")
        
        success = await credential_manager.delete_credential(user_id, decoded_name)
        if not success:
            logger.error(f"Failed to delete credential: '{decoded_name}' for user {user_id}")
            raise HTTPException(status_code=404, detail="Credential not found")
        
        logger.info(f"Successfully deleted credential: '{decoded_name}' for user {user_id}")
        return {"message": "Credential deleted successfully"}
        
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error deleting credential '{decoded_name}': {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to delete credential: {str(e)}")

@router.post("/credential-profiles", response_model=CredentialProfileResponse)
async def store_credential_profile(
    request: StoreCredentialProfileRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.info(f"Storing credential profile '{request.profile_name}' for {request.mcp_qualified_name} for user {user_id}")
    
    try:
        profile_id = await credential_manager.store_credential_profile(
            user_id,
            request.mcp_qualified_name,
            request.profile_name,
            request.display_name,
            request.config,
            request.is_default
        )
        
        profile = await credential_manager.get_credential_by_profile(user_id, profile_id)
        if not profile:
            raise HTTPException(status_code=500, detail="Failed to retrieve stored profile")
        
        return CredentialProfileResponse(
            profile_id=profile.profile_id,
            mcp_qualified_name=profile.mcp_qualified_name,
            profile_name=profile.profile_name,
            display_name=profile.display_name,
            config_keys=list(profile.config.keys()),
            is_active=profile.is_active,
            is_default=profile.is_default,
            last_used_at=profile.last_used_at.isoformat() if profile.last_used_at and hasattr(profile.last_used_at, 'isoformat') else (str(profile.last_used_at) if profile.last_used_at else None),
            created_at=profile.created_at.isoformat() if profile.created_at and hasattr(profile.created_at, 'isoformat') else (str(profile.created_at) if profile.created_at else ""),
            updated_at=profile.updated_at.isoformat() if profile.updated_at and hasattr(profile.updated_at, 'isoformat') else (str(profile.updated_at) if profile.updated_at else "")
        )
    except Exception as e:
        logger.error(f"Error storing credential profile: {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to store credential profile: {str(e)}")

@router.get("/credential-profiles", response_model=List[CredentialProfileResponse])
async def get_all_user_credential_profiles(
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.info(f"Getting all credential profiles for user {user_id}")
    
    try:
        profiles = await credential_manager.get_all_user_credential_profiles(user_id)
        
        return [
            CredentialProfileResponse(
                profile_id=profile.profile_id,
                mcp_qualified_name=profile.mcp_qualified_name,
                profile_name=profile.profile_name,
                display_name=profile.display_name,
                config_keys=list(profile.config.keys()),
                is_active=profile.is_active,
                is_default=profile.is_default,
                last_used_at=profile.last_used_at.isoformat() if profile.last_used_at and hasattr(profile.last_used_at, 'isoformat') else (str(profile.last_used_at) if profile.last_used_at else None),
                created_at=profile.created_at.isoformat() if profile.created_at and hasattr(profile.created_at, 'isoformat') else (str(profile.created_at) if profile.created_at else ""),
                updated_at=profile.updated_at.isoformat() if profile.updated_at and hasattr(profile.updated_at, 'isoformat') else (str(profile.updated_at) if profile.updated_at else "")
            )
            for profile in profiles
        ]
    except Exception as e:
        logger.error(f"Error getting all user credential profiles: {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to get credential profiles: {str(e)}")

@router.get("/credential-profiles/{mcp_qualified_name:path}", response_model=List[CredentialProfileResponse])
async def get_credential_profiles_for_mcp(
    mcp_qualified_name: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    try:
        decoded_name = urllib.parse.unquote(mcp_qualified_name)
        logger.info(f"Getting credential profiles for '{decoded_name}' for user {user_id}")
        
        profiles = await credential_manager.get_credential_profiles(user_id, decoded_name)
        
        return [
            CredentialProfileResponse(
                profile_id=profile.profile_id,
                mcp_qualified_name=profile.mcp_qualified_name,
                profile_name=profile.profile_name,
                display_name=profile.display_name,
                config_keys=list(profile.config.keys()),
                is_active=profile.is_active,
                is_default=profile.is_default,
                last_used_at=profile.last_used_at.isoformat() if profile.last_used_at and hasattr(profile.last_used_at, 'isoformat') else (str(profile.last_used_at) if profile.last_used_at else None),
                created_at=profile.created_at.isoformat() if profile.created_at and hasattr(profile.created_at, 'isoformat') else (str(profile.created_at) if profile.created_at else ""),
                updated_at=profile.updated_at.isoformat() if profile.updated_at and hasattr(profile.updated_at, 'isoformat') else (str(profile.updated_at) if profile.updated_at else "")
            )
            for profile in profiles
        ]
    except Exception as e:
        logger.error(f"Error getting credential profiles for '{decoded_name}': {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to get credential profiles: {str(e)}")

@router.get("/credential-profiles/profile/{profile_id}", response_model=CredentialProfileResponse)
async def get_credential_profile_by_id(
    profile_id: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.info(f"Getting credential profile {profile_id} for user {user_id}")
    
    try:
        profile = await credential_manager.get_credential_by_profile(user_id, profile_id)
        if not profile:
            raise HTTPException(status_code=404, detail="Credential profile not found")
        
        return CredentialProfileResponse(
            profile_id=profile.profile_id,
            mcp_qualified_name=profile.mcp_qualified_name,
            profile_name=profile.profile_name,
            display_name=profile.display_name,
            config_keys=list(profile.config.keys()),
            is_active=profile.is_active,
            is_default=profile.is_default,
            last_used_at=profile.last_used_at.isoformat() if profile.last_used_at and hasattr(profile.last_used_at, 'isoformat') else (str(profile.last_used_at) if profile.last_used_at else None),
            created_at=profile.created_at.isoformat() if profile.created_at and hasattr(profile.created_at, 'isoformat') else (str(profile.created_at) if profile.created_at else ""),
            updated_at=profile.updated_at.isoformat() if profile.updated_at and hasattr(profile.updated_at, 'isoformat') else (str(profile.updated_at) if profile.updated_at else "")
        )
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error getting credential profile {profile_id}: {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to get credential profile: {str(e)}")

@router.put("/credential-profiles/{profile_id}/set-default")
async def set_default_credential_profile(
    profile_id: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.info(f"Setting credential profile {profile_id} as default for user {user_id}")
    
    try:
        success = await credential_manager.set_default_profile(user_id, profile_id)
        if not success:
            raise HTTPException(status_code=404, detail="Credential profile not found")
        
        return {"message": "Default profile set successfully"}
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error setting default profile {profile_id}: {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to set default profile: {str(e)}")

@router.delete("/credential-profiles/{profile_id}")
async def delete_credential_profile(
    profile_id: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.info(f"Deleting credential profile {profile_id} for user {user_id}")
    
    try:
        success = await credential_manager.delete_credential_profile(user_id, profile_id)
        if not success:
            raise HTTPException(status_code=404, detail="Credential profile not found")
        
        return {"message": "Credential profile deleted successfully"}
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error deleting credential profile {profile_id}: {str(e)}")
        raise HTTPException(status_code=500, detail=f"Failed to delete credential profile: {str(e)}")