#!/usr/bin/env python3


import json
import math


from commands.base import BaseCommand
from submission import Submission


class Comments(BaseCommand):
    width = 5

    @staticmethod
    def sort_comments(comments):
        result = {}

        for comment in comments:
            author = comment["author"]["username"], comment["author"]["name"]
            if author not in result:
                result[author] = dict()

            file_path = (
                comment["position"]["new_path"] if "position" in comment else None
            )
            if file_path not in result[author]:
                result[author][file_path] = list()

            result[author][file_path].append(comment)

        # sort by lines
        for author in result:
            for file_path in result[author]:
                result[author][file_path].sort(
                    key=lambda comment: comment["position"]["new_line"]
                    if "position" in comment
                    else math.inf
                )

        return result

    @staticmethod
    def print_comments(comments):
        comments = Comments.sort_comments(comments)

        for author in comments:
            login, name = author
            header = f"***** {name} ({login}) *****".center(40, "*").center(80)
            print(header)

            for file_path in comments[author]:
                if file_path is not None:
                    filename = file_path.split('/')[-1]
                    print(f"\n`{filename}`\n{'-'*(len(filename) + 2)}")
                for comment in comments[author][file_path]:
                    if comment["system"]:
                        continue

                    if comment["type"] == "DiffNote":
                        body = comment["body"].replace(
                            "\n", "\n" + " " * (len(str(comment["position"]["new_line"])) + 5)
                        )

                        print(
                            f"""- L{comment["position"]["new_line"]}: {body}"""
                        )
                    else:
                        print(f"""[{comment["created_at"]}]\n{comment["body"]}""")
            print(header)

    def exec(self, submission: Submission) -> None:
        mrs = self.gitlab.get_mrs_for_branch(submission.branch)
        if not mrs:
            return

        iid = mrs[0]["iid"]
        comments = self.gitlab.get_comments(iid)

        branch = f"### {submission.branch.center(20)} ###".upper().center(80, "#")

        print(branch)
        self.print_comments(comments)
        print(branch)