from fastapi import APIRouter, Depends, status
from fastapi.responses import JSONResponse
from pydantic import SecretStr

from openhands.core.logger import openhands_logger as logger
from openhands.integrations.provider import (
    PROVIDER_TOKEN_TYPE,
    ProviderHandler,
)
from openhands.integrations.service_types import (
    AuthenticationError,
    Branch,
    Repository,
    SuggestedTask,
    UnknownException,
    User,
)
from openhands.server.dependencies import get_dependencies
from openhands.server.shared import server_config
from openhands.server.user_auth import (
    get_access_token,
    get_provider_tokens,
    get_user_id,
)

app = APIRouter(prefix='/api/user', dependencies=get_dependencies())


@app.get('/repositories', response_model=list[Repository])
async def get_user_repositories(
    sort: str = 'pushed',
    provider_tokens: PROVIDER_TOKEN_TYPE | None = Depends(get_provider_tokens),
    access_token: SecretStr | None = Depends(get_access_token),
    user_id: str | None = Depends(get_user_id),
) -> list[Repository] | JSONResponse:
    if provider_tokens:
        client = ProviderHandler(
            provider_tokens=provider_tokens,
            external_auth_token=access_token,
            external_auth_id=user_id,
        )

        try:
            return await client.get_repositories(sort, server_config.app_mode)

        except AuthenticationError as e:
            logger.info(
                f'Returning 401 Unauthorized - Authentication error for user_id: {user_id}, error: {str(e)}'
            )
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_401_UNAUTHORIZED,
            )

        except UnknownException as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            )

    logger.info(
        f'Returning 401 Unauthorized - Git provider token required for user_id: {user_id}'
    )
    return JSONResponse(
        content='Git provider token required. (such as GitHub).',
        status_code=status.HTTP_401_UNAUTHORIZED,
    )


@app.get('/info', response_model=User)
async def get_user(
    provider_tokens: PROVIDER_TOKEN_TYPE | None = Depends(get_provider_tokens),
    access_token: SecretStr | None = Depends(get_access_token),
    user_id: str | None = Depends(get_user_id),
) -> User | JSONResponse:
    if provider_tokens:
        client = ProviderHandler(
            provider_tokens=provider_tokens, external_auth_token=access_token
        )

        try:
            user: User = await client.get_user()
            return user

        except AuthenticationError as e:
            logger.info(
                f'Returning 401 Unauthorized - Authentication error for user_id: {user_id}, error: {str(e)}'
            )
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_401_UNAUTHORIZED,
            )

        except UnknownException as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            )

    logger.info(
        f'Returning 401 Unauthorized - Git provider token required for user_id: {user_id}'
    )
    return JSONResponse(
        content='Git provider token required. (such as GitHub).',
        status_code=status.HTTP_401_UNAUTHORIZED,
    )


@app.get('/search/repositories', response_model=list[Repository])
async def search_repositories(
    query: str,
    per_page: int = 5,
    sort: str = 'stars',
    order: str = 'desc',
    provider_tokens: PROVIDER_TOKEN_TYPE | None = Depends(get_provider_tokens),
    access_token: SecretStr | None = Depends(get_access_token),
    user_id: str | None = Depends(get_user_id),
) -> list[Repository] | JSONResponse:
    if provider_tokens:
        client = ProviderHandler(
            provider_tokens=provider_tokens, external_auth_token=access_token
        )
        try:
            repos: list[Repository] = await client.search_repositories(
                query, per_page, sort, order
            )
            return repos

        except AuthenticationError as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_401_UNAUTHORIZED,
            )

        except UnknownException as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            )

    logger.info(
        f'Returning 401 Unauthorized - GitHub token required for user_id: {user_id}'
    )
    return JSONResponse(
        content='GitHub token required.',
        status_code=status.HTTP_401_UNAUTHORIZED,
    )


@app.get('/suggested-tasks', response_model=list[SuggestedTask])
async def get_suggested_tasks(
    provider_tokens: PROVIDER_TOKEN_TYPE | None = Depends(get_provider_tokens),
    access_token: SecretStr | None = Depends(get_access_token),
    user_id: str | None = Depends(get_user_id),
) -> list[SuggestedTask] | JSONResponse:
    """Get suggested tasks for the authenticated user across their most recently pushed repositories.

    Returns:
    - PRs owned by the user
    - Issues assigned to the user.
    """
    if provider_tokens:
        client = ProviderHandler(
            provider_tokens=provider_tokens, external_auth_token=access_token
        )
        try:
            tasks: list[SuggestedTask] = await client.get_suggested_tasks()
            return tasks

        except AuthenticationError as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_401_UNAUTHORIZED,
            )

        except UnknownException as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            )
    logger.info(f'Returning 401 Unauthorized - No providers set for user_id: {user_id}')

    return JSONResponse(
        content='No providers set.',
        status_code=status.HTTP_401_UNAUTHORIZED,
    )


@app.get('/repository/branches', response_model=list[Branch])
async def get_repository_branches(
    repository: str,
    provider_tokens: PROVIDER_TOKEN_TYPE | None = Depends(get_provider_tokens),
    access_token: SecretStr | None = Depends(get_access_token),
    user_id: str | None = Depends(get_user_id),
) -> list[Branch] | JSONResponse:
    """Get branches for a repository.

    Args:
        repository: The repository name in the format 'owner/repo'

    Returns:
        A list of branches for the repository
    """
    if provider_tokens:
        client = ProviderHandler(
            provider_tokens=provider_tokens, external_auth_token=access_token
        )
        try:
            branches: list[Branch] = await client.get_branches(repository)
            return branches

        except AuthenticationError as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_401_UNAUTHORIZED,
            )

        except UnknownException as e:
            return JSONResponse(
                content=str(e),
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            )

    logger.info(
        f'Returning 401 Unauthorized - Git provider token required for user_id: {user_id}'
    )

    return JSONResponse(
        content='Git provider token required. (such as GitHub).',
        status_code=status.HTTP_401_UNAUTHORIZED,
    )