from typing import List

from src.analyzers.git_repository import GitRepository
from src.models import RiskyCommitAnalysis


class RiskyCommitDetector:
    """Detect risky and potentially problematic commits."""

    def __init__(
        self,
        repo: GitRepository,
        days: int = 30,
        large_commit_threshold: int = 500,
    ) -> None:
        """Initialize RiskyCommitDetector."""
        self.repo = repo
        self.days = days
        self.large_commit_threshold = large_commit_threshold

    def analyze(self) -> RiskyCommitAnalysis:
        """Detect risky commits."""
        commits = self.repo.get_commits(since_days=self.days)

        if not commits:
            return RiskyCommitAnalysis()

        large_commits = []
        merge_commits = []
        revert_commits = []

        for commit in commits:
            if commit.lines_changed_count >= self.large_commit_threshold:
                large_commits.append(commit)

            if commit.is_merge:
                merge_commits.append(commit)

            if "revert" in commit.message.lower():
                revert_commits.append(commit)

        return RiskyCommitAnalysis(
            large_commits=large_commits[:20],
            merge_commits=merge_commits[:20],
            revert_commits=revert_commits[:20],
            total_risky=len(large_commits) + len(merge_commits) + len(revert_commits),
        )