from abc import abstractmethod
import asyncio
import aiohttp

class Api:
    _api_key: str | None

    _client_session =  aiohttp.ClientSession()

    @abstractmethod
    def __init__(self, api_key: str | None = None):
        if (asyncio.get_event_loop().run_until_complete(self.is_rate_limited())):
            raise Exception('Api is rate limited.')

        self._api_key = api_key

    @abstractmethod
    async def get_release(
        self, repository: str, all: bool = False, prerelease: bool = False
    ) -> dict | list:
        """Gets the release(s) for a repository.

        Args:
                repository (str): The repository to get releases for.
                all (bool, optional): Whether to get all releases or not. Defaults to False.
                prerelease (bool, optional): Whether to get prereleases or not. Defaults to False.
        Returns:
                dict | list: The release(s) for the repository.
        """
        raise NotImplementedError

    @abstractmethod
    async def get_contributor(self, repository):
        """Gets the contributors for a repository.

        Args:
                repository (str): The repository to get contributors for.
        """
        raise NotImplementedError

    @abstractmethod
    async def get_members(self, organization):
        '''Gets the team for an organization.

        Args:
                organization (str): The organization to get the team for.
        '''
        raise NotImplementedError
    
    @abstractmethod
    async def is_rate_limited(self) -> bool:
        """Checks if the api is rate limited.

        Returns:
                bool: Whether the api is rate limited or not.
        """
        raise NotImplementedError

class GitHubApi(Api):
    def __init__(self):
        super().__init__()
        pass

    async def get_contributor(self, repository):
        def transform_contributor(contributor: dict) -> dict:
            """Transforms a contributor into a dict.

            Args:
                    contributor (dict): The contributor to transform.

            Returns:
                    dict: The transformed contributor.
            """

            return {
                "username": contributor["login"],
                "avatar": contributor["avatar_url"],  # TODO: Proxy via a CDN.
                "link": contributor["html_url"],
                "contributions": contributor["contributions"],
            }

        def sort_and_delete_key(contributor: dict) -> int:
            contributions = contributor["contributions"]
            del contributor["contributions"]
            return contributions

        async with self._client_session.get(f"https://api.github.com/repos/{repository}/contributors") as resp:
            contributors = await resp.json()
            contributors = list(
                map(transform_contributor, contributors)
            )
            contributors.sort(key=sort_and_delete_key, reverse=True)
            return contributors

    async def get_release(
        self, repository: str, all: bool = False, prerelease: bool = False
    ) -> dict | list:
        def transform_release(release: dict) -> dict:
            """Transforms a release dict into a dict.

            Args:
                    release (dict): The release dict to transform.

            Returns:
                    dict: The transformed release dict.
            """

            return {
                # TODO: Check if theres any need for this: 'id': release['id'].
                "tag": release["tag_name"],
                "prerelease": release["prerelease"],
                "published_at": release["published_at"],
                "assets": [
                    {
                        "name": asset["name"],
                        "download_url": asset[
                            "browser_download_url"
                        ],  # TODO: Proxy via a CDN.
                    }
                    for asset in release["assets"]
                ],
            }

        # A little bit of code duplication but more readable than a ternary operation.
        if all:
            async with self._client_session.get(f"https://api.github.com/repos/{repository}/releases") as resp:
                releases = await resp.json()
                return list(map(transform_release, releases))
        else:
            async with self._client_session.get(f"https://api.github.com/repos/{repository}/releases/latest?prerelease={prerelease}") as resp:
                latest_release = await resp.json()
                return transform_release(latest_release)

    async def get_members(self, organization):
        def transform_team_member(member: dict) -> dict:
            '''Transforms a team member into a dict.

            Args:
                    member (dict): The member to transform.

            Returns:
                    dict: The transformed member.
            '''

            return {
                'username': member['login'],
                'avatar': member['avatar_url'],  # TODO: Proxy via a CDN.
                'link': member['html_url']
            }

        async with self._client_session.get(f'https://api.github.com/orgs/{organization}/members') as resp:
            members = await resp.json()
            return list(map(transform_team_member, members))
    
    async def is_rate_limited(self) -> bool:
        async with self._client_session.get('https://api.github.com/rate_limit') as resp:
            return (await resp.json())["rate"]["remaining"] == 0