# MIT License
#
# Copyright (c) 2022 Clivern
#
# This software is licensed under the MIT License. The full text of the license
# is provided below.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

from github import GithubObject
from okazaki.exception import NotFound


class Issue:
    """
    The Issue class provides methods to interact with GitHub issues.
    """

    def __init__(self, app):
        """
        Initializes the Issue class with the given application instance.
        """
        self._app = app

    def get_issue(self, repo, number):
        """
        Retrieves a specific issue by its number.
        """
        try:
            return self._get_repo(repo).get_issue(number=number)
        except Exception:
            return None

    def get_issues(self, repo, state="open"):
        """
        Retrieves issues by state
        """
        try:
            return self._get_repo(repo).get_issues(state=state)
        except Exception:
            return None

    def create_issue(
        self,
        repo,
        title,
        body,
        assignees=GithubObject.NotSet,
        labels=GithubObject.NotSet,
        milestone=GithubObject.NotSet,
    ):
        """
        Creates a new issue in the specified repository.
        """
        return self._get_repo(repo).create_issue(
            title=title,
            body=body,
            assignees=assignees,
            labels=labels,
            milestone=milestone,
        )

    def get_labels(self, repo, labels=[]):
        """
        Retrieves specific labels by their names.
        """
        result = []

        for label in labels:
            result.append(self._get_repo(repo).get_label(label))

        return result if len(result) > 0 else None

    def close_issue(self, repo, number):
        """
        Closes a specific issue by its number.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            issue.edit(state="closed")
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def reopen_issue(self, repo, number):
        """
        Reopens a specific issue by its number.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            issue.edit(state="open")
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def edit_issue(
        self,
        repo,
        number,
        title,
        body,
        assignees=GithubObject.NotSet,
        labels=GithubObject.NotSet,
        milestone=GithubObject.NotSet,
        state=GithubObject.NotSet,
    ):
        """
        Edits an existing issue.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            issue.edit(
                title=title,
                body=body,
                assignees=assignees,
                labels=labels,
                milestone=milestone,
                state=state,
            )
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def add_comment(self, repo, number, body):
        """
        Adds a comment to a specific issue.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            return issue.create_comment(body)
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def get_comments(self, repo, number):
        """
        Retrieves comments from a specific issue.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            return issue.get_comments()
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def add_labels(self, repo, number, labels):
        """
        Adds labels to a specific issue.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            return issue.add_to_labels(*labels)
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def remove_label(self, repo, number, label):
        """
        Removes a label from a specific issue.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            return issue.remove_from_labels(label)
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def get_events(self, repo, number):
        """
        Retrieves events from a specific issue.
        """
        issue = self.get_issue(repo, number)

        if issue is not None:
            return issue.get_events()
        else:
            raise NotFound(
                f"Repository '{repo}' Issue with number '{number}' not found"
            )

    def create_milestone(
        self, repo, title, state="open", description=None, due_on=None
    ):
        """
        Creates a new milestone in the specified repository.
        """
        return self._get_repo(repo).create_milestone(
            title, state=state, description=description, due_on=due_on
        )

    def get_milestones(self, repo, state="open"):
        """
        Retrieves milestones from the specified repository.
        """
        return self._get_repo(repo).get_milestones(state=state)

    def search_issues(self, query):
        """
        Searches for issues based on a query.
        """
        return self._app.get_client().search_issues(query)

    def _get_repo(self, repo):
        """
        Helper method to get a repository object from the GitHub client.
        """
        return self._app.get_client().get_repo(repo)
