backend/pipedream/api.py

from fastapi import APIRouter, HTTPException, Depends, Query
from typing import List, Dict, Any, Optional
from pydantic import BaseModel
from uuid import UUID
from datetime import datetime

from utils.logger import logger
from utils.auth_utils import get_current_user_id_from_jwt
from .profile_service import ProfileService, Profile, ProfileServiceError, ProfileNotFoundError, ProfileAlreadyExistsError, InvalidConfigError, EncryptionError
from .connection_service import ConnectionService
from .app_service import get_app_service
from .mcp_service import MCPService, ConnectionStatus, MCPConnectionError, MCPServiceError
from .connection_token_service import ConnectionTokenService

import httpx
import json

router = APIRouter(prefix="/pipedream", tags=["pipedream"])

profile_service: Optional[ProfileService] = None
connection_service: Optional[ConnectionService] = None
app_service = None
mcp_service: Optional[MCPService] = None
connection_token_service: Optional[ConnectionTokenService] = None

def initialize(database):
    pass


class CreateConnectionTokenRequest(BaseModel):
    app: Optional[str] = None


class ConnectionTokenResponse(BaseModel):
    success: bool
    link: Optional[str] = None
    token: Optional[str] = None
    external_user_id: str = ""
    app: Optional[str] = None
    expires_at: Optional[str] = None
    error: Optional[str] = None


class ConnectionResponse(BaseModel):
    success: bool
    connections: List[Dict[str, Any]]
    count: int
    error: Optional[str] = None


class MCPDiscoveryRequest(BaseModel):
    app_slug: Optional[str] = None
    oauth_app_id: Optional[str] = None


class MCPProfileDiscoveryRequest(BaseModel):
    external_user_id: str
    app_slug: Optional[str] = None
    oauth_app_id: Optional[str] = None


class MCPDiscoveryResponse(BaseModel):
    success: bool
    mcp_servers: List[Dict[str, Any]]
    count: int
    error: Optional[str] = None


class MCPConnectionRequest(BaseModel):
    app_slug: str
    oauth_app_id: Optional[str] = None


class MCPConnectionResponse(BaseModel):
    success: bool
    mcp_config: Optional[Dict[str, Any]] = None
    error: Optional[str] = None


class ProfileRequest(BaseModel):
    profile_name: str
    app_slug: str
    app_name: str
    description: Optional[str] = None
    is_default: bool = False
    oauth_app_id: Optional[str] = None
    enabled_tools: List[str] = []
    external_user_id: Optional[str] = None


class UpdateProfileRequest(BaseModel):
    profile_name: Optional[str] = None
    display_name: Optional[str] = None
    is_active: Optional[bool] = None
    is_default: Optional[bool] = None
    enabled_tools: Optional[List[str]] = None


class ProfileResponse(BaseModel):
    profile_id: UUID
    account_id: UUID
    mcp_qualified_name: str
    profile_name: str
    display_name: str
    app_slug: str
    app_name: str
    external_user_id: str
    enabled_tools: List[str]
    is_active: bool
    is_default: bool
    is_connected: bool
    created_at: datetime
    updated_at: datetime
    last_used_at: Optional[datetime] = None

    @classmethod
    def from_domain(cls, profile: Profile) -> 'ProfileResponse':
        return cls(
            profile_id=profile.profile_id,
            account_id=profile.account_id,
            mcp_qualified_name=profile.mcp_qualified_name,
            profile_name=profile.profile_name,
            display_name=profile.display_name,
            app_slug=profile.app_slug,
            app_name=profile.app_name,
            external_user_id=profile.external_user_id,
            enabled_tools=profile.enabled_tools,
            is_active=profile.is_active,
            is_default=profile.is_default,
            is_connected=profile.is_connected,
            created_at=profile.created_at,
            updated_at=profile.updated_at,
            last_used_at=profile.last_used_at
        )


def _strip_pipedream_prefix(app_slug: Optional[str]) -> Optional[str]:
    if app_slug and app_slug.startswith("pipedream:"):
        return app_slug[len("pipedream:"):]
    return app_slug


def _handle_pipedream_exception(e: Exception) -> HTTPException:
    if isinstance(e, ProfileNotFoundError):
        return HTTPException(status_code=404, detail=str(e))
    elif isinstance(e, ProfileAlreadyExistsError):
        return HTTPException(status_code=409, detail=str(e))
    elif isinstance(e, InvalidConfigError):
        return HTTPException(status_code=400, detail=str(e))
    elif isinstance(e, EncryptionError):
        return HTTPException(status_code=500, detail=str(e))
    elif isinstance(e, MCPConnectionError):
        return HTTPException(status_code=502, detail=str(e))
    elif isinstance(e, MCPServiceError):
        return HTTPException(status_code=500, detail=str(e))
    elif isinstance(e, ProfileServiceError):
        return HTTPException(status_code=500, detail=str(e))
    else:
        return HTTPException(status_code=500, detail=f"Internal server error: {str(e)}")


@router.post("/connection-token", response_model=ConnectionTokenResponse)
async def create_connection_token(
    request: CreateConnectionTokenRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Creating Pipedream connection token for user: {user_id}, app: {request.app}")
    
    actual_app = _strip_pipedream_prefix(request.app)
    
    try:
        from .connection_token_service import ExternalUserId, AppSlug
        external_user_id = ExternalUserId(user_id)
        app_slug = AppSlug(actual_app) if actual_app else None
        result = await connection_token_service.create(external_user_id, app_slug)
        
        return ConnectionTokenResponse(
            success=True,
            link=result.get("connect_link_url"),
            token=result.get("token"),
            external_user_id=user_id,
            app=actual_app,
            expires_at=result.get("expires_at")
        )
        
    except Exception as e:
        logger.error(f"Failed to create connection token: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.get("/connections", response_model=ConnectionResponse)
async def get_user_connections(
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Getting connections for user: {user_id}")
    
    try:
        from .connection_service import ExternalUserId
        external_user_id = ExternalUserId(user_id)
        connections = await connection_service.get_connections_for_user(external_user_id)
        
        connection_data = []
        for connection in connections:
            connection_data.append({
                "name": connection.app.name,
                "name_slug": connection.app.slug,
                "description": connection.app.description,
                "category": connection.app.category,
                "img_src": connection.app.logo_url,
                "auth_type": connection.app.auth_type.value,
                "verified": connection.app.is_verified,
                "url": connection.app.url,
                "tags": connection.app.tags,
                "is_active": connection.is_active
            })
        
        return ConnectionResponse(
            success=True,
            connections=connection_data,
            count=len(connection_data)
        )
        
    except Exception as e:
        logger.error(f"Failed to get connections: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.post("/mcp/discover", response_model=MCPDiscoveryResponse)
async def discover_mcp_servers(
    request: MCPDiscoveryRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Discovering MCP servers for user: {user_id}, app: {request.app_slug}")
    
    actual_app_slug = _strip_pipedream_prefix(request.app_slug)
    
    try:
        from .mcp_service import ExternalUserId, AppSlug
        external_user_id = ExternalUserId(user_id)
        app_slug_obj = AppSlug(actual_app_slug) if actual_app_slug else None
        servers = await mcp_service.discover_servers_for_user(external_user_id, app_slug_obj)
        
        server_data = []
        for server in servers:
            tools_data = []
            for tool in server.available_tools:
                tools_data.append({
                    "name": tool.name,
                    "description": tool.description,
                    "inputSchema": tool.input_schema
                })
            
            server_data.append({
                "app_slug": server.app_slug,
                "app_name": server.app_name,
                "server_url": server.server_url,
                "project_id": server.project_id,
                "environment": server.environment,
                "external_user_id": server.external_user_id,
                "oauth_app_id": server.oauth_app_id,
                "status": server.status.value,
                "available_tools": tools_data,
                "error": server.error_message
            })
        
        return MCPDiscoveryResponse(
            success=True,
            mcp_servers=server_data,
            count=len(server_data)
        )
        
    except Exception as e:
        logger.error(f"Failed to discover MCP servers: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.post("/mcp/discover-profile", response_model=MCPDiscoveryResponse)
async def discover_mcp_servers_for_profile(
    request: MCPProfileDiscoveryRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Discovering MCP servers for profile: {request.external_user_id}")
    
    actual_app_slug = _strip_pipedream_prefix(request.app_slug)
    
    try:
        from .mcp_service import ExternalUserId, AppSlug
        external_user_id = ExternalUserId(request.external_user_id)
        app_slug_obj = AppSlug(actual_app_slug) if actual_app_slug else None
        servers = await mcp_service.discover_servers_for_user(external_user_id, app_slug_obj)
        
        server_data = []
        for server in servers:
            tools_data = []
            for tool in server.available_tools:
                tools_data.append({
                    "name": tool.name,
                    "description": tool.description,
                    "inputSchema": tool.input_schema
                })
            
            server_data.append({
                "app_slug": server.app_slug,
                "app_name": server.app_name,
                "server_url": server.server_url,
                "project_id": server.project_id,
                "environment": server.environment,
                "external_user_id": server.external_user_id,
                "oauth_app_id": server.oauth_app_id,
                "status": server.status.value,
                "available_tools": tools_data,
                "error": server.error_message
            })
        
        return MCPDiscoveryResponse(
            success=True,
            mcp_servers=server_data,
            count=len(server_data)
        )
        
    except Exception as e:
        logger.error(f"Failed to discover MCP servers for profile: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.post("/mcp/connect", response_model=MCPConnectionResponse)
async def create_mcp_connection(
    request: MCPConnectionRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Creating MCP connection for user: {user_id}, app: {request.app_slug}")
    
    actual_app_slug = _strip_pipedream_prefix(request.app_slug)
    
    try:
        from .mcp_service import ExternalUserId, AppSlug
        external_user_id = ExternalUserId(user_id)
        app_slug_obj = AppSlug(actual_app_slug)
        server = await mcp_service.create_connection(
            external_user_id,
            app_slug_obj,
            request.oauth_app_id
        )
        
        tools_data = []
        for tool in server.available_tools:
            tools_data.append({
                "name": tool.name,
                "description": tool.description,
                "inputSchema": tool.input_schema
            })
        
        mcp_config = {
            "app_slug": server.app_slug,
            "app_name": server.app_name,
            "server_url": server.server_url,
            "project_id": server.project_id,
            "environment": server.environment,
            "external_user_id": server.external_user_id,
            "oauth_app_id": server.oauth_app_id,
            "status": server.status.value,
            "available_tools": tools_data
        }
        
        return MCPConnectionResponse(
            success=True,
            mcp_config=mcp_config
        )
        
    except Exception as e:
        logger.error(f"Failed to create MCP connection: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.get("/apps", response_model=Dict[str, Any])
async def get_pipedream_apps(
    after: Optional[str] = Query(None, description="Cursor for pagination"),
    q: Optional[str] = Query(None),
    category: Optional[str] = Query(None)
):
    logger.debug(f"Fetching Pipedream apps: query='{q}', category='{category}'")
    
    try:
        result = await app_service.search_apps(
            query=q,
            category=category,
            cursor=after
        )
        
        apps_data = []
        for app in result.get("apps", []):
            categories = []
            if app.category and app.category != "Other":
                categories.append(app.category)
            if app.tags:
                for tag in app.tags:
                    if tag and tag not in categories:
                        categories.append(tag)
            if not categories and app.category:
                categories.append(app.category)
                
            apps_data.append({
                "name": app.name,
                "name_slug": app.slug,
                "description": app.description,
                "category": app.category,
                "categories": categories,
                "img_src": app.logo_url,
                "auth_type": app.auth_type.value,
                "verified": app.is_verified,
                "url": app.url,
                "tags": app.tags,
                "featured_weight": app.featured_weight
            })
        
        return {
            "success": True,
            "apps": apps_data,
            "page_info": result.get("page_info", {}),
            "total_count": result.get("total_count", 0)
        }
        
    except Exception as e:
        logger.error(f"Failed to fetch Pipedream apps: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.get("/apps/popular", response_model=Dict[str, Any])
async def get_popular_pipedream_apps():
    logger.debug("Fetching popular Pipedream apps")
    
    try:
        apps = await app_service.get_popular_apps(limit=100)
        
        apps_data = []
        for app in apps:
            categories = []
            if app.category and app.category != "Other":
                categories.append(app.category)
            if app.tags:
                for tag in app.tags:
                    if tag and tag not in categories:
                        categories.append(tag)

            if not categories and app.category:
                categories.append(app.category)
                
            apps_data.append({
                "name": app.name,
                "name_slug": app.slug,
                "description": app.description,
                "category": app.category,
                "categories": categories,
                "img_src": app.logo_url,
                "auth_type": app.auth_type.value,
                "verified": app.is_verified,
                "url": app.url,
                "tags": app.tags,
                "featured_weight": app.featured_weight
            })
        
        return {
            "success": True,
            "apps": apps_data,
            "page_info": {
                "total_count": len(apps_data),
                "count": len(apps_data),
                "has_more": False
            }
        }
        
    except Exception as e:
        logger.error(f"Failed to fetch popular Pipedream apps: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.get("/apps/{app_slug}/icon")
async def get_app_icon(app_slug: str):
    logger.debug(f"Fetching icon for app: {app_slug}")
    try:
        app = await app_service.get_app_by_slug(app_slug)
        icon_url = app.logo_url if app else None
        if icon_url:
            return {
                "success": True,
                "app_slug": app_slug,
                "icon_url": icon_url
            }
        else:
            raise HTTPException(
                status_code=404, 
                detail=f"Icon not found for app: {app_slug}"
            )
            
    except Exception as e:
        logger.error(f"Failed to fetch icon for app {app_slug}: {str(e)}")
        raise _handle_pipedream_exception(e)

@router.get("/apps/{app_slug}/tools")
async def get_app_tools(app_slug: str):
    logger.debug(f"Getting tools for app: {app_slug}")
    url = f"https://remote.mcp.pipedream.net/?app={app_slug}&externalUserId=tools_preview"
    payload = {"jsonrpc": "2.0", "method": "tools/list", "params": {}, "id": 1}
    headers = {"Content-Type": "application/json", "Accept": "application/json, text/event-stream"}
    try:
        async with httpx.AsyncClient(timeout=30.0) as client:
            async with client.stream("POST", url, json=payload, headers=headers) as resp:
                resp.raise_for_status()
                tools = []
                async for line in resp.aiter_lines():
                    if not line or not line.startswith("data:"):
                        continue
                    data_str = line[len("data:"):].strip()
                    try:
                        data_obj = json.loads(data_str)
                        tools = data_obj.get("result", {}).get("tools", [])
                        for tool in tools:
                            desc = tool.get("description", "") or ""
                            idx = desc.find("[")
                            if idx != -1:
                                tool["description"] = desc[:idx].strip()
                        break
                    except json.JSONDecodeError:
                        logger.warning(f"Failed to parse JSON data: {data_str}")
                        continue
        return {"success": True, "tools": tools}
    except httpx.HTTPError as e:
        logger.error(f"HTTP error when fetching tools for app {app_slug}: {e}")
        raise HTTPException(status_code=502, detail="Bad Gateway")
    except Exception as e:
        logger.error(f"Unexpected error when fetching tools for app {app_slug}: {e}")
        raise HTTPException(status_code=500, detail="Internal server error")


@router.post("/profiles", response_model=ProfileResponse)
async def create_credential_profile(
    request: ProfileRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Creating credential profile for user: {user_id}, app: {request.app_slug}")
    
    try:
        profile = await profile_service.create_profile(
            user_id,
            request.profile_name,
            request.app_slug,
            request.app_name,
            description=request.description,
            is_default=request.is_default,
            oauth_app_id=request.oauth_app_id,
            enabled_tools=request.enabled_tools,
            external_user_id=request.external_user_id
        )
        
        return ProfileResponse.from_domain(profile)
        
    except Exception as e:
        logger.error(f"Failed to create credential profile: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.get("/profiles", response_model=List[ProfileResponse])
async def get_credential_profiles(
    app_slug: Optional[str] = Query(None),
    is_active: Optional[bool] = Query(None),
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Getting credential profiles for user: {user_id}, app: {app_slug}")
    
    actual_app_slug = _strip_pipedream_prefix(app_slug)
    
    try:
        profiles = await profile_service.get_profiles(user_id, actual_app_slug, is_active)
        return [ProfileResponse.from_domain(profile) for profile in profiles]
        
    except Exception as e:
        logger.error(f"Failed to get credential profiles: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.get("/profiles/{profile_id}", response_model=ProfileResponse)
async def get_credential_profile(
    profile_id: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Getting credential profile: {profile_id} for user: {user_id}")
    
    try:
        profile = await profile_service.get_profile(user_id, profile_id)
        
        if not profile:
            from .profile_service import ProfileNotFoundError
            raise ProfileNotFoundError(profile_id)
        
        return ProfileResponse.from_domain(profile)
        
    except Exception as e:
        logger.error(f"Failed to get credential profile: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.put("/profiles/{profile_id}", response_model=ProfileResponse)
async def update_credential_profile(
    profile_id: str,
    request: UpdateProfileRequest,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Updating credential profile: {profile_id} for user: {user_id}")
    
    try:
        profile = await profile_service.update_profile(
            user_id,
            profile_id,
            profile_name=request.profile_name,
            display_name=request.display_name,
            is_active=request.is_active,
            is_default=request.is_default,
            enabled_tools=request.enabled_tools
        )
        
        return ProfileResponse.from_domain(profile)
        
    except Exception as e:
        logger.error(f"Failed to update credential profile: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.delete("/profiles/{profile_id}")
async def delete_credential_profile(
    profile_id: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Deleting credential profile: {profile_id} for user: {user_id}")
    
    try:
        success = await profile_service.delete_profile(user_id, profile_id)
        
        if not success:
            raise ProfileNotFoundError(profile_id)
        
        return {"success": True, "message": "Profile deleted successfully"}
        
    except Exception as e:
        logger.error(f"Failed to delete credential profile: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.post("/profiles/{profile_id}/connect")
async def connect_credential_profile(
    profile_id: str,
    app: Optional[str] = Query(None),
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Connecting credential profile: {profile_id} for user: {user_id}")
    
    actual_app = _strip_pipedream_prefix(app)
    
    try:
        from uuid import UUID
        from .profile_service import ProfileNotFoundError
        from .connection_token_service import ExternalUserId, AppSlug
        
        profile = await profile_service.get_profile(user_id, profile_id)
        if not profile:
            raise ProfileNotFoundError(profile_id)
        
        external_user_id = ExternalUserId(profile.external_user_id)
        app_slug = AppSlug(actual_app or profile.app_slug)
        result = await connection_token_service.create(external_user_id, app_slug)
        
        return {
            "success": True,
            "link": result.get("connect_link_url"),
            "token": result.get("token"),
            "expires_at": result.get("expires_at"),
            "profile_id": profile_id,
            "external_user_id": profile.external_user_id,
            "app": actual_app or profile.app_slug
        }
        
    except Exception as e:
        logger.error(f"Failed to connect credential profile: {str(e)}")
        raise _handle_pipedream_exception(e)


@router.get("/profiles/{profile_id}/connections")
async def get_profile_connections(
    profile_id: str,
    user_id: str = Depends(get_current_user_id_from_jwt)
):
    logger.debug(f"Getting connections for profile: {profile_id}, user: {user_id}")
    
    try:
        from uuid import UUID
        from .profile_service import ProfileNotFoundError
        from .connection_service import ExternalUserId
        
        profile = await profile_service.get_profile(user_id, profile_id)
        if not profile:
            raise ProfileNotFoundError(profile_id)
        
        external_user_id = ExternalUserId(profile.external_user_id)
        connections = await connection_service.get_connections_for_user(external_user_id)
        
        connection_data = []
        for connection in connections:
            connection_data.append({
                "name": connection.app.name,
                "name_slug": connection.app.slug,
                "description": connection.app.description,
                "category": connection.app.category,
                "img_src": connection.app.logo_url,
                "auth_type": connection.app.auth_type.value,
                "verified": connection.app.is_verified,
                "url": connection.app.url,
                "tags": connection.app.tags,
                "is_active": connection.is_active
            })
        
        return {
            "success": True,
            "connections": connection_data,
            "count": len(connection_data)
        }
        
    except Exception as e:
        logger.error(f"Failed to get profile connections: {str(e)}")
        raise _handle_pipedream_exception(e)