"""Tools for Gitea pull request operations."""

import json
from typing import Any
from gitea.client import GiteaClient
from gitea.models import PullRequestModel, CommentModel


class PRTools:
    """Tools for Gitea pull request operations."""

    def __init__(self, client: GiteaClient) -> None:
        self._client = client

    def get_pull_request(self, owner: str, repo: str, pull_number: int) -> str:
        try:
            pr: PullRequestModel = self._client.get_pull_request(owner, repo, pull_number)
            return pr.model_dump_json(indent=2)
        except Exception as e:
            return f"Error getting pull request: {str(e)}"

    def close_pull_request(self, owner: str, repo: str, pull_number: int) -> str:
        try:
            self._client.close_pull_request(owner, repo, pull_number)
            return f"Pull request #{pull_number} closed successfully."
        except Exception as e:
            return f"Error closing pull request: {str(e)}"

    def get_pull_request_comments(self, owner: str, repo: str, pull_number: int) -> str:
        try:
            comments: list[CommentModel] = self._client.get_pull_request_comments(owner, repo, pull_number)
            return json.dumps([c.model_dump() for c in comments], indent=2)
        except Exception as e:
            return f"Error getting PR comments: {str(e)}"

    def list_assigned_pull_requests(self) -> list[dict[str, Any]]:
        try:
            repos = self._client.list_all_user_repos()
            all_prs: list[dict[str, Any]] = []
            for repo_info in repos:
                repo_owner = repo_info.owner
                repo_name = repo_info.name
                prs = self._client.list_assigned_pull_requests(repo_owner, repo_name)
                if prs:
                    all_prs.extend([pr.model_dump() if hasattr(pr, 'model_dump') else pr for pr in prs])
            return all_prs
        except Exception as e:
            print(f"DEBUG: list_assigned_pull_requests error: {e}")
            return []

    def list_pull_requests(self, owner: str, repo: str, state: str = "open") -> str:
        try:
            prs = self._client.list_repo_pull_requests(owner, repo, state)
            if not prs:
                return f"No PRs in {owner}/{repo}."
            summary = [f"#{pr.number}: {pr.title}" for pr in prs]
            return "\n".join(summary)
        except Exception as e:
            return f"Error listing PRs: {str(e)}"

    def create_pull_request(self, owner: str, repo: str, head: str, base: str, title: str, description: str = "") -> str:
        try:
            pr = self._client.create_pr_via_tea(owner, repo, title, description, head, base)
            return pr.model_dump_json(indent=2)
        except Exception as e:
            return f"Error creating PR: {str(e)}"

    def add_label_to_pr(self, owner: str, repo: str, pr_number: int, label: str) -> str:
        try:
            self._client.add_label_pr(owner, repo, pr_number, label)
            return f"Label '{label}' added to PR #{pr_number}."
        except Exception as e:
            return f"Error adding label to PR #{pr_number}: {e}"

    def get_pull_request_diff(self, owner: str, repo: str, pull_number: int) -> str:
        try:
            return self._client.get_pull_request_diff(owner, repo, pull_number)
        except Exception as e:
            return f"Error getting PR diff: {str(e)}"

    def get_pull_request_patch(self, owner: str, repo: str, pull_number: int) -> str:
        try:
            return self._client.get_pull_request_patch(owner, repo, pull_number)
        except Exception as e:
            return f"Error getting PR patch: {str(e)}"

    def approve_pull_request(self, owner: str, repo: str, pull_number: int, comment: str) -> str:
        try:
            self._client.approve_pr(owner, repo, pull_number, comment)
            return f"Approved PR #{pull_number}."
        except Exception as e:
            return f"Error approving PR: {str(e)}"

    def request_changes(self, owner: str, repo: str, pull_number: int, comment: str) -> str:
        try:
            self._client.request_changes_pr(owner, repo, pull_number, comment)
            return f"Requested changes on PR #{pull_number}."
        except Exception as e:
            return f"Error requesting changes: {str(e)}"