import json
from typing import Any
from unittest.mock import MagicMock
from gitea.client import GiteaClient
from gitea.models import IssueModel, CommentModel, LabelModel, RepositoryModel
from gitea.tools.issue_tools import IssueTools


def _create_mock_client() -> MagicMock:
    """Create a mock GiteaClient with sub-client attributes."""
    mock_client: MagicMock = MagicMock(spec=GiteaClient)
    mock_client.issues = MagicMock()
    mock_client.repos = MagicMock()
    return mock_client


def test_get_issue_success() -> None:
    mock_client = _create_mock_client()
    issue: IssueModel = IssueModel(number=1, title="Test Issue", state="open")
    mock_client.issues.get_issue.return_value = issue

    issue_tools: IssueTools = IssueTools(mock_client)
    res: IssueModel = issue_tools.get_issue("owner", "repo", 1)

    assert isinstance(res, IssueModel)
    assert res.number == 1
    assert res.title == "Test Issue"
    mock_client.issues.get_issue.assert_called_once_with("owner", "repo", 1)


def test_get_issue_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.get_issue.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    try:
        issue_tools.get_issue("owner", "repo", 1)
        assert False, "Expected Exception"
    except Exception as e:
        assert str(e) == "API Error"


def test_close_issue_success() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.close_issue.return_value = IssueModel(number=1, state="closed")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.close_issue("owner", "repo", 1)
    assert res == "Issue #1 closed successfully."
    mock_client.issues.close_issue.assert_called_once_with("owner", "repo", 1)


def test_close_issue_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.close_issue.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.close_issue("owner", "repo", 1)
    assert "Error closing issue: API Error" in res


def test_get_issue_comments_success() -> None:
    mock_client = _create_mock_client()
    comment: CommentModel = CommentModel(id=123, body="Comment body")
    mock_client.issues.get_issue_comments.return_value = [comment]

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.get_issue_comments("owner", "repo", 1)
    data: list[dict[str, Any]] = json.loads(res)
    assert len(data) == 1
    assert data[0]["body"] == "Comment body"


def test_get_issue_comments_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.get_issue_comments.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.get_issue_comments("owner", "repo", 1)
    assert "Error getting issue comments: API Error" in res


def test_list_assigned_issues_success() -> None:
    mock_client = _create_mock_client()
    repo: RepositoryModel = RepositoryModel(name="repo1", owner="owner1")
    issue: IssueModel = IssueModel(number=1, title="Test Issue")
    mock_client.repos.list_all_user_repos.return_value = [repo]
    mock_client.issues.list_assigned_issues.return_value = [issue]

    issue_tools: IssueTools = IssueTools(mock_client)
    res: list[dict[str, Any]] = issue_tools.list_assigned_issues()
    assert len(res) == 1
    assert res[0]["number"] == 1
    mock_client.repos.list_all_user_repos.assert_called_once()
    mock_client.issues.list_assigned_issues.assert_called_once_with("owner1", "repo1")


def test_list_assigned_issues_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.repos.list_all_user_repos.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: list[dict[str, Any]] = issue_tools.list_assigned_issues()
    assert res == []


def test_list_issues_success() -> None:
    mock_client = _create_mock_client()
    issue: IssueModel = IssueModel(number=1, title="Test Issue")
    mock_client.issues.list_repo_issues.return_value = [issue]

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.list_issues("owner", "repo")
    assert "#1: Test Issue" in res


def test_list_issues_empty() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.list_repo_issues.return_value = []

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.list_issues("owner", "repo")
    assert res == "No issues in owner/repo."


def test_list_issues_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.list_repo_issues.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.list_issues("owner", "repo")
    assert "Error listing issues: API Error" in res


def test_create_issue_success() -> None:
    mock_client = _create_mock_client()
    issue: IssueModel = IssueModel(number=2)
    mock_client.issues.create_issue.return_value = issue

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.create_issue(
        "owner", "repo", "Title", "Body", ["label1"], ["assignee1"]
    )
    assert res == "Issue #2 created successfully in owner/repo."
    mock_client.issues.create_issue.assert_called_once_with(
        "owner", "repo", "Title", "Body", ["label1"], ["assignee1"]
    )


def test_create_issue_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.create_issue.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.create_issue("owner", "repo", "Title", "Body")
    assert "Error creating issue: API Error" in res


def test_add_label_to_issue_success() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.add_label.return_value = LabelModel(name="bug")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.add_label_to_issue("owner", "repo", 1, "bug")
    assert res == "Label 'bug' added to issue #1."


def test_add_label_to_issue_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.add_label.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.add_label_to_issue("owner", "repo", 1, "bug")
    assert "Error adding label to issue #1: API Error" in res


def test_add_comment_to_issue_success() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.add_comment.return_value = CommentModel(id=1)

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.add_comment_to_issue("owner", "repo", 1, "body")
    assert res == "Comment added to issue #1."


def test_add_comment_to_issue_failure() -> None:
    mock_client = _create_mock_client()
    mock_client.issues.add_comment.side_effect = Exception("API Error")

    issue_tools: IssueTools = IssueTools(mock_client)
    res: str = issue_tools.add_comment_to_issue("owner", "repo", 1, "body")
    assert "Error adding comment to issue #1: API Error" in res