from datetime import datetime
import locale
from textwrap import fill

from review.topic import Message, Topic
from review.aliases import Aliases


LENGTH_LINE = 80


class Review:
    def __init__(self):
        self.participants = []
        self.topics = []
        self.messages = []
        self.owner = None
        self.started = False
        self.ended = False
        self.start_time = None
        self.end_time = None

    @property
    def is_started(self):
        return self.started

    @property
    def is_ended(self):
        return self.ended

    @property
    def last_topic(self):
        if len(self.topics) >= 2:
            return self.topics[-2]

    @property
    def current_topic(self):
        if len(self.topics) > 0:
            return self.topics[-1]

    @property
    def has_participants(self):
        return len(self.participants) > 0

    @property
    def individual_topics(self):
        return [topic for topic in self.topics if topic.individual]

    @property
    def collective_topics(self):
        return [topic for topic in self.topics if topic.collective]

    @property
    def has_individual_topic(self):
        return len(self.individual_topics) > 0

    @property
    def has_collective_topic(self):
        return len(self.collective_topics) > 0

    @property
    def user_count(self):
        return len(self.participants)

    @property
    def duration(self):
        return (self.end_time - self.start_time).seconds // 60 if self.ended else None

    @property
    def year(self):
        return self.start_time.year

    def is_owner(self, owner):
        return owner.lower() == self.owner.lower()

    def new_topic(self, title, collective=True):
        self.topics.append(Topic(title, collective))

    def new_collective_topic(self, title):
        self.new_topic(title)

    def new_individual_topic(self, title):
        self.new_topic(title, False)

    def add_message(self, sender, message):
        self.messages.append(Message(sender, message))

    def add_input(self, sender, message):
        if self.current_topic:
            if sender not in self.participants:
                self.participants.append(sender)
            self.current_topic.add_message(sender, message)

    def start(self, owner):
        self.started = True
        self.owner = owner
        self.start_time = datetime.today()

    def close(self):
        self.ended = True
        self.end_time = datetime.today()

    def cancel(self):
        self.participants = []
        self.topics = []
        self.messages = []
        self.owner = None
        self.started = False
        self.ended = False
        self.start_time = None
        self.end_time = None

    def report(self, stats, user_aliases_filepath):
        locale.setlocale(locale.LC_ALL, "fr_FR.utf8")
        formatter = "%A %d %B %Y"
        hour_formatter = "%Hh%M"

        aliases = Aliases(user_aliases_filepath)

        def add_center(text, character=" "):
            text_size = len(text) + 2
            left_size = (LENGTH_LINE - text_size) // 2
            right_size = LENGTH_LINE - left_size - text_size
            result = character * left_size + " " + text
            if character != " ":
                result += " " + character * right_size
            result += "\n"
            return result

        content = "=" * LENGTH_LINE + "\n"
        content += add_center("Revue de la semaine en cours")
        content += "\n"
        content += add_center(self.start_time.strftime(formatter))
        content += "=" * LENGTH_LINE + "\n"
        content += "\n"
        content += "\n"
        content += "=" * LENGTH_LINE + "\n"
        content += "\n"
        content += add_center("Personnes participantes", "-")
        for participant in self.participants:
            content += f"* {aliases[participant]} ({participant})\n"

        if self.has_individual_topic:
            for participant in self.participants:
                content += "\n"
                content += "=" * LENGTH_LINE + "\n"
                content += "\n"
                content += add_center(f"{aliases[participant]} ({participant})", "-")
                for topic in self.individual_topics:
                    if topic.has_participant(participant):
                        content += "\n"
                        content += f"===  {topic.title}  ===\n"
                        content += "\n"
                        for message in topic.get_messages(participant):
                            content += fill(f"* {message.text}", width=LENGTH_LINE)
                            content += "\n"

        if self.has_collective_topic:
            for topic in self.collective_topics:
                content += "\n"
                content += "=" * LENGTH_LINE + "\n"
                content += add_center(topic.title)
                content += "=" * LENGTH_LINE + "\n"
                content += "\n"
                for message in topic.get_messages():
                    content += fill(
                        f"* {message.author} : {message.text}",
                        width=LENGTH_LINE,
                    )
                    content += "\n"

        content += "\n"
        content += add_center("Log IRC brut")
        content += "\n"
        for message in self.messages:
            content += fill(f"* {message.author} : {message.text}\n", width=LENGTH_LINE)
            content += "\n"

        # Add statistics
        content += "\n"
        content += add_center("Statistiques")
        content += "\n"
        content += (
            f"C'était la {stats.size + 1}e revue hebdomadaire de l'April, "
            f"la {stats.year_review(self.year) + 1}e de l'année {self.year}.\n"
        )
        content += (
            "Horaire de début de la revue : "
            f"{self.start_time.strftime(hour_formatter)}\n"
        )
        content += (
            "Horaire de fin de la revue : "
            f"{self.end_time.strftime(hour_formatter)}\n"
        )
        content += f"Durée de la revue : {self.duration} minutes\n"
        content += f"Nombre de personnes participantes : {self.user_count}\n"
        if self.user_count < stats.max_users:
            content += (
                "La participation moyenne aux revues est "
                f"de {stats.avg_users:.1f} personnes.\n"
            )
        elif self.user_count == stats.max_users:
            content += (
                "\\o/ Record de participation égalé \\o/ Le précédent record "
                f"de {stats.max_users} personnes était le "
                f"{stats.biggest.date.strftime(formatter)}.\n"
            )
        else:
            content += (
                f"*\\o/* Nouveau record de participation : {self.user_count} "
                "personnes ! *\\o/* Le précédent record était de "
                f"{stats.max_users} personnes le "
                f"{stats.biggest.date.strftime(formatter)}.\n"
            )

        percentage = (
            stats.users_board.datas[self.user_count] / stats.users_board.sum * 100
        )
        content += fill(
            "Statistiques sur la participation à la revue "
            f"({self.user_count} personnes) : position "
            f"{stats.users_board.position(self.user_count)} "
            f"(min.={stats.users_board.min}, "
            f"moy.={stats.users_board.avg:.1f}, "
            f"max.={stats.users_board.max}) "
            f"fréquence {stats.users_board[self.user_count]}"
            f"/{stats.users_board.sum} "
            f"({percentage:.0f} %) ",
            width=LENGTH_LINE,
        )
        content += "\n"

        percentage = (
            stats.users_board.datas[self.user_count] / stats.users_board.sum * 100
        )
        content += fill(
            "Statistiques sur la durée de la revue "
            f"({self.duration} min) : position "
            f"{stats.durations_board.position(self.duration)} "
            f"(min.={stats.durations_board.min} min, "
            f"moy.={stats.durations_board.avg:.1f} min, "
            f"max.={stats.durations_board.max} min) "
            f"fréquence {stats.durations_board[self.duration]}"
            f"/{stats.durations_board.sum} "
            f"({percentage:.0f} %) ",
            width=LENGTH_LINE,
        )
        content += "\n"

        return content