from pmcp.mcp_server.github_server.utils.github_api import GithubClient


class ContentService:
    """Commits and file-content helpers."""

    def __init__(self, client: GithubClient):
        self.client = client

    async def recent_commits(
        self, owner: str, repo: str, branch: str, per_page: int = 10
    ):
        """
        Retrieve the most recent commits on a branch.

        Args:
            owner (str):    Repository owner.
            repo (str):     Repository name.
            branch (str):   Branch ref (e.g. ``main``).
            per_page (int): Max commits to return (<=100).

        Returns:
            List of commit dicts.
        """
        params = {"sha": branch, "per_page": per_page}
        return await self.client.GET(f"{owner}/{repo}/commits", params=params)
    
    async def get_commit_details(
        self, owner: str, repo: str, sha: str
    ) -> dict:
        """
        Retrieve a single commit’s metadata *and* its file-level diff.

        Args:
            owner (str): Repository owner.
            repo (str):  Repository name.
            sha (str):   Commit SHA.

        Returns:
            Full JSON payload for the commit, including `commit.message` and
            a `files` array where each entry has a `patch` (the diff).
        """
        return await self.client.GET(f"{owner}/{repo}/commits/{sha}")

    async def get_file(
        self, owner: str, repo: str, path: str, ref: str | None = None
    ):
        """
        Download a file’s blob (Base64) from a repo.

        Args:
            owner (str): Repository owner.
            repo (str):  Repository name.
            path (str):  File path within the repo.
            ref (str):   Optional commit SHA / branch / tag.

        Returns:
            GitHub ``contents`` API response including ``content``.
        """
        params = {"ref": ref} if ref else None
        return await self.client.GET(f"{owner}/{repo}/contents/{path}", params=params)