helpers/git.py

from git import Git, Repo
from giturlparse import parse
from datetime import datetime
from dataclasses import dataclass
import os
import subprocess
import base64
import re
from urllib.parse import urlparse, urlunparse
from helpers import files


def strip_auth_from_url(url: str) -> str:
    """Remove any authentication info from URL."""
    if not url:
        return url
    parsed = urlparse(url)
    if not parsed.hostname:
        return url
    clean_netloc = parsed.hostname
    if parsed.port:
        clean_netloc += f":{parsed.port}"
    return urlunparse((parsed.scheme, clean_netloc, parsed.path, '', '', ''))


def extract_author_repo(url: str) -> tuple[str, str]:
    parsed = parse(strip_auth_from_url(url.strip()))
    author = (parsed.owner or "").strip()
    repo = (parsed.repo or parsed.name or "").strip()
    if not parsed.valid or not author or not repo:
        raise ValueError("Could not derive plugin name from URL")
    if repo.endswith(".git"):
        repo = repo[:-4]
    if not author or not repo:
        raise ValueError("Could not derive plugin name from URL")
    return author, repo


@dataclass
class GitHeadInfo:
    hash: str
    short_hash: str
    message: str
    author: str
    committed_at: str
    authored_at: str


@dataclass
class GitReleaseInfo:
    tag: str
    short_tag: str
    version: str
    released_at: str


@dataclass
class GitRemoteReleaseInfo:
    tag: str
    commit_hash: str
    short_commit_hash: str
    released_at: str


@dataclass
class GitRemoteReleasesResult:
    is_git_repo: bool
    is_remote: bool
    author: str
    repo: str
    releases: list[GitRemoteReleaseInfo]
    error: str = ""


@dataclass
class GitRemoteCommitsInfo:
    is_git_repo: bool
    is_remote: bool
    path: str
    branch: str
    remote_branch: str
    commits_since_local: int
    last_remote_commit_at: str
    error: str = ""


@dataclass
class GitRepoReleaseInfo:
    is_git_repo: bool
    is_remote: bool
    path: str
    author: str
    repo: str
    branch: str
    head: GitHeadInfo | None
    release: GitReleaseInfo | None
    error: str = ""


def _format_git_timestamp(timestamp: int) -> str:
    return datetime.fromtimestamp(timestamp).strftime('%Y-%m-%d %H:%M:%S')


def _split_describe_version(describe: str) -> tuple[str, int]:
    normalized = describe.strip()
    match = re.fullmatch(r"(.+)-(\d+)-g[0-9a-f]+", normalized)
    if not match:
        return normalized, 0
    return match.group(1), int(match.group(2))


def _format_release_version(
    branch: str,
    short_tag: str,
    commits_since_tag: int,
    commit_hash: str,
) -> str:
    version_prefix = branch[0].upper() if branch else "D"
    version_core = short_tag or commit_hash[:7]

    if (
        short_tag
        and commits_since_tag > 0
        and branch.strip().lower() != "main"
    ):
        version_core = f"{short_tag}+{commits_since_tag}"

    return f"{version_prefix} {version_core}"


def get_remote_releases(author: str, repo: str) -> GitRemoteReleasesResult:
    try:
        author = author.strip()
        repo = repo.strip()

        if not author or not repo:
            return GitRemoteReleasesResult(
                is_remote=False,
                is_git_repo=False,
                author=author,
                repo=repo,
                releases=[],
                error="Both author and repo are required.",
            )

        remote_url = f"https://github.com/{author}/{repo}.git"

        env = os.environ.copy()
        env['GIT_TERMINAL_PROMPT'] = '0'

        try:
            output = Git().ls_remote('--tags', '--refs', '--', remote_url, with_extended_output=False, env=env)
        except Exception as e:
            return GitRemoteReleasesResult(
                is_remote=True,
                is_git_repo=False,
                author=author,
                repo=repo,
                releases=[],
                error=f"Git remote query failed: {str(e)}",
            )

        releases: list[GitRemoteReleaseInfo] = []

        for line in output.splitlines():
            line = line.strip()
            if not line:
                continue

            parts = line.split()
            if len(parts) != 2:
                continue

            commit_hash, ref_name = parts
            prefix = 'refs/tags/'
            if not ref_name.startswith(prefix):
                continue

            tag_name = ref_name[len(prefix):]
            releases.append(GitRemoteReleaseInfo(
                tag=tag_name,
                commit_hash=commit_hash,
                short_commit_hash=commit_hash[:7],
                released_at="",
            ))

        releases.sort(key=lambda release: release.tag, reverse=True)

        return GitRemoteReleasesResult(
            is_git_repo=True,
            is_remote=True,
            author=author,
            repo=repo,
            releases=releases,
        )
    except Exception as e:
        return GitRemoteReleasesResult(
            is_git_repo=False,
            is_remote=False,
            author=author,
            repo=repo,
            releases=[],
            error=str(e),
        )


def get_remote_commits_since_local(repo_path: str) -> GitRemoteCommitsInfo:
    try:
        repo = Repo(repo_path)
        if repo.bare:
            return GitRemoteCommitsInfo(
                is_git_repo=False,
                is_remote=False,
                path=repo_path,
                branch="",
                remote_branch="",
                commits_since_local=0,
                last_remote_commit_at="",
                error=f"Repository at {repo_path} is bare and cannot be used.",
            )

        if repo.head.is_detached:
            return GitRemoteCommitsInfo(
                is_git_repo=True,
                is_remote=False,
                path=repo_path,
                branch="",
                remote_branch="",
                commits_since_local=0,
                last_remote_commit_at="",
                error="Repository HEAD is detached.",
            )

        branch = repo.active_branch.name

        tracking_branch = repo.active_branch.tracking_branch()
        if tracking_branch is None:
            return GitRemoteCommitsInfo(
                is_git_repo=True,
                is_remote=False,
                path=repo_path,
                branch=branch,
                remote_branch="",
                commits_since_local=0,
                last_remote_commit_at="",
                error="Current branch has no tracking remote branch.",
            )

        remote_name = tracking_branch.remote_name
        remote = repo.remotes[remote_name]
        env = os.environ.copy()
        env['GIT_TERMINAL_PROMPT'] = '0'
        with repo.git.custom_environment(**env):
            remote.fetch(repo.active_branch.name)

        remote_commit = tracking_branch.commit
        commits = list(repo.iter_commits(f"{repo.head.commit.hexsha}..{tracking_branch.path}"))

        return GitRemoteCommitsInfo(
            is_git_repo=True,
            is_remote=True,
            path=repo_path,
            branch=branch,
            remote_branch=tracking_branch.path,
            commits_since_local=len(commits),
            last_remote_commit_at=_format_git_timestamp(remote_commit.committed_date) if commits else "",
        )
    except Exception as e:
        return GitRemoteCommitsInfo(
            is_git_repo=False,
            is_remote=False,
            path=repo_path,
            branch="",
            remote_branch="",
            commits_since_local=0,
            last_remote_commit_at="",
            error=str(e),
        )


def get_repo_release_info(repo_path: str) -> GitRepoReleaseInfo:
    try:
        repo = Repo(repo_path)
        if repo.bare:
            return GitRepoReleaseInfo(
                is_git_repo=False,
                is_remote=False,
                path=repo_path,
                author="",
                repo="",
                branch="",
                head=None,
                release=None,
                error=f"Repository at {repo_path} is bare and cannot be used.",
            )

        commit = repo.head.commit
        author = ""
        repo_name = ""
        is_remote = False

        try:
            if repo.remotes:
                author, repo_name = extract_author_repo(repo.remotes.origin.url)
                is_remote = bool(author and repo_name)
        except Exception:
            author = ""
            repo_name = ""
            is_remote = False

        branch = ""
        try:
            branch = repo.active_branch.name if repo.head.is_detached is False else ""
        except Exception:
            branch = ""

        tag = ""
        short_tag = ""
        release_time = ""
        commits_since_tag = 0
        try:
            tag = repo.git.describe(tags=True, always=True)
            short_tag, commits_since_tag = _split_describe_version(tag)

            tag_ref = next((t for t in repo.tags if t.name == short_tag), None)
            if tag_ref:
                release_commit = tag_ref.commit
                release_time = _format_git_timestamp(release_commit.committed_date)
        except Exception:
            tag = ""
            short_tag = ""
            release_time = ""
            commits_since_tag = 0

        version = _format_release_version(
            branch,
            short_tag,
            commits_since_tag,
            commit.hexsha,
        )

        return GitRepoReleaseInfo(
            is_git_repo=True,
            is_remote=is_remote,
            path=repo_path,
            author=author,
            repo=repo_name,
            branch=branch,
            head=GitHeadInfo(
                hash=commit.hexsha,
                short_hash=commit.hexsha[:7],
                message=str(commit.message).split("\n")[0][:200],
                author=str(commit.author),
                committed_at=_format_git_timestamp(commit.committed_date),
                authored_at=_format_git_timestamp(commit.authored_date),
            ),
            release=GitReleaseInfo(
                tag=tag,
                short_tag=short_tag,
                version=version,
                released_at=release_time,
            ),
        )
    except Exception as e:
        return GitRepoReleaseInfo(
            is_git_repo=False,
            is_remote=False,
            path=repo_path,
            author="",
            repo="",
            branch="",
            head=None,
            release=None,
            error=str(e),
        )


def get_git_info():
    # Get the current working directory (assuming the repo is in the same folder as the script)
    repo_path = files.get_base_dir()

    state = get_repo_release_info(repo_path)
    if not state.is_git_repo:
        raise ValueError(state.error or f"Repository at {repo_path} is not usable.")

    return {
        "branch": state.branch,
        "commit_hash": state.head.hash if state.head else "",
        "commit_time": state.head.committed_at if state.head else "",
        "tag": state.release.tag if state.release else "",
        "short_tag": state.release.short_tag if state.release else "",
        "version": state.release.version if state.release else "",
    }

def get_version():
    try:
        git_info = get_git_info()
        return str(git_info.get("short_tag", "")).strip() or "unknown"
    except Exception:
        return "unknown"


def is_official_agent_zero_repo() -> bool:
    """Return True when origin points to agent0ai/agent-zero."""
    try:
        repo = Repo(files.get_base_dir())
        if not repo.remotes:
            return False

        remote_url = strip_auth_from_url(repo.remotes.origin.url).lower().rstrip("/")

        if remote_url.endswith(".git"):
            remote_url = remote_url[:-4]

        allowed_repos = [
            "agent0ai/agent-zero",
            "frdel/agent-zero",
        ]
        return any(
            remote_url.endswith(f"github.com/{repo_name}")
            or remote_url.endswith(f"github.com:{repo_name}")
            for repo_name in allowed_repos
        )
    except Exception:
        return False


def clone_repo(url: str, dest: str, token: str | None = None):
    """Clone a git repository. Uses http.extraHeader for token auth (never stored in URL/config)."""
    cmd = ['git']
    
    if token:
        # GitHub Git HTTP requires Basic Auth, not Bearer
        auth_string = f"x-access-token:{token}"
        auth_base64 = base64.b64encode(auth_string.encode()).decode()
        cmd.extend(['-c', f'http.extraHeader=Authorization: Basic {auth_base64}'])
    
    cmd.extend(['clone', '--progress', '--', url, dest])
    
    env = os.environ.copy()
    env['GIT_TERMINAL_PROMPT'] = '0'
    
    result = subprocess.run(cmd, capture_output=True, text=True, env=env)
    
    if result.returncode != 0:
        error_msg = result.stderr.strip() or result.stdout.strip() or 'Unknown error'
        raise Exception(f"Git clone failed: {error_msg}")
    
    return Repo(dest)


def update_repo(repo_path: str) -> Repo:
    repo = Repo(repo_path)
    if repo.bare:
        raise ValueError(f"Repository at {repo_path} is bare and cannot be updated.")

    if repo.head.is_detached:
        raise ValueError("Repository HEAD is detached.")

    branch = repo.active_branch.name
    tracking_branch = repo.active_branch.tracking_branch()
    if tracking_branch is None:
        raise ValueError("Current branch has no tracking remote branch.")

    env = os.environ.copy()
    env['GIT_TERMINAL_PROMPT'] = '0'

    with repo.git.custom_environment(**env):
        repo.remotes[tracking_branch.remote_name].pull(branch)

    return repo


# Files to ignore when checking dirty status (A0 project metadata)
A0_IGNORE_PATTERNS = {".a0proj", ".a0proj/"}


def get_repo_status(repo_path: str) -> dict:
    """Get Git repository status, ignoring A0 project metadata files."""
    try:
        repo = Repo(repo_path)
        if repo.bare:
            return {"is_git_repo": False, "error": "Repository is bare"}
        
        # Remote URL (always strip auth info for security)
        remote_url = ""
        try:
            if repo.remotes:
                remote_url = strip_auth_from_url(repo.remotes.origin.url)
        except Exception:
            pass
        
        # Current branch
        try:
            current_branch = repo.active_branch.name if not repo.head.is_detached else f"HEAD@{repo.head.commit.hexsha[:7]}"
        except Exception:
            current_branch = "unknown"
        
        # Check dirty status, excluding A0 metadata
        def is_a0_file(path: str) -> bool:
            return path.startswith(".a0proj") or path == ".a0proj"
        
        # Filter out A0 files from diff and untracked
        changed_files = [d.a_path for d in repo.index.diff(None)] + [d.a_path for d in repo.index.diff("HEAD")]
        untracked = repo.untracked_files
        
        real_changes = [f for f in changed_files if not is_a0_file(f)]
        real_untracked = [f for f in untracked if not is_a0_file(f)]
        
        is_dirty = len(real_changes) > 0 or len(real_untracked) > 0
        untracked_count = len(real_untracked)
        
        last_commit = None
        try:
            commit = repo.head.commit
            last_commit = {
                "hash": commit.hexsha[:7],
                "message": str(commit.message).split("\n")[0][:80],
                "author": str(commit.author),
                "date": datetime.fromtimestamp(commit.committed_date).strftime('%Y-%m-%d %H:%M')
            }
        except Exception:
            pass
        
        return {
            "is_git_repo": True,
            "remote_url": remote_url,
            "current_branch": current_branch,
            "is_dirty": is_dirty,
            "untracked_count": untracked_count,
            "last_commit": last_commit
        }
    except Exception as e:
        return {"is_git_repo": False, "error": str(e)}