from django.db import models
from . import Event, CustomUser, FederalMatchCategory, FederalCategory, FederalLevelCategory, FederalAgeCategory
import uuid
from django.utils import timezone, formats

class Tournament(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=True)
    event = models.ForeignKey(Event, blank=True, null=True, on_delete=models.CASCADE)
    creator = models.ForeignKey(CustomUser, blank=True, null=True, on_delete=models.CASCADE)
    name = models.CharField(max_length=200, null=True, blank=True)
    start_date = models.DateTimeField()
    end_date = models.DateTimeField(null=True, blank=True)
    creation_date = models.DateTimeField()
    is_private = models.BooleanField(default=False)
    # format = models.IntegerField(default=FederalMatchCategory.NINE_GAMES, choices=FederalMatchCategory.choices, null=True, blank=True)
    round_format = models.IntegerField(default=FederalMatchCategory.NINE_GAMES, choices=FederalMatchCategory.choices, null=True, blank=True)
    group_stage_format = models.IntegerField(default=FederalMatchCategory.NINE_GAMES, choices=FederalMatchCategory.choices, null=True, blank=True)
    loser_round_format = models.IntegerField(default=FederalMatchCategory.NINE_GAMES, choices=FederalMatchCategory.choices, null=True, blank=True)
    bracket_sort_mode = models.IntegerField(default=0)
    group_stage_count = models.IntegerField(default=0)
    rank_source_date = models.DateTimeField(null=True, blank=True)
    day_duration = models.IntegerField(default=0)
    team_count = models.IntegerField(default=0)
    team_sorting = models.IntegerField(default=0)
    federal_category = models.IntegerField(default=FederalCategory.MEN, choices=FederalCategory.choices) # optional ?
    federal_level_category = models.IntegerField(default=FederalLevelCategory.P100, choices=FederalLevelCategory.choices)
    federal_age_category = models.IntegerField(default=FederalAgeCategory.SENIOR, choices=FederalAgeCategory.choices)
    group_stage_court_count = models.IntegerField(null=True, blank=True)
    seed_count = models.IntegerField(default=0)
    closed_registration_date = models.DateTimeField(null=True, blank=True)
    group_stage_additional_qualified = models.IntegerField(default=0)
    court_count = models.IntegerField(null=True, blank=True)
    prioritize_club_members = models.BooleanField()
    qualified_per_group_stage = models.IntegerField(default=0)
    teams_per_group_stage = models.IntegerField(default=0)

    def __str__(self):
        if self.name:
            return self.name
        elif self.event:
            return self.event.display_name()
        else:
            return '--'

    def level(self):
        return self.get_federal_level_category_display()

    def category(self):
        return self.get_federal_category_display()

    def formatted_start_date(self):
        return self.start_date.strftime("%d/%m/%y")

    def in_progress(self):
        return self.end_date is None

    def team_summons(self):
        summons = []
        for team_registration in self.teamregistration_set.all():
            next_match = team_registration.next_match()
            if next_match:
                names = team_registration.team_names()
                stage = next_match.stage_name()
                weight = team_registration.weight()
                summon = TeamSummon(names, next_match.start_date, weight, stage, team_registration.logo)
                summons.append(summon)

        summons.sort(key=lambda s: s.weight)
        return summons

    def match_groups(self, broadcasted, group_stage_id, round_id):

        match_groups = []
        if group_stage_id:
            group_stage = self.groupstage_set.filter(id=group_stage_id).first()
            match_groups.append(self.group_stage_match_group(group_stage, broadcasted, hide_empty_matches=False))
        elif round_id:
            round = self.round_set.filter(id=round_id).first()
            match_groups = self.round_match_groups(round, broadcasted, hide_empty_matches=False)
        else:
            match_groups = self.all_groups(broadcasted)

        return match_groups

    def all_groups(self, broadcasted):
        groups = []
        for round in self.round_set.all():
            groups.extend(self.round_match_groups(round, broadcasted, hide_empty_matches=True))
        for group_stage in self.groupstage_set.all():
            group = self.group_stage_match_group(group_stage, broadcasted, hide_empty_matches=True)
            if group:
                groups.append(group)
        return groups

    def group_stage_match_group(self, group_stage, broadcasted, hide_empty_matches):
        matches = group_stage.match_set.all()
        if hide_empty_matches:
            matches = [m for m in matches if m.should_appear()]

        if matches:
            return self.create_match_group(group_stage.name(), matches, broadcasted)
        else:
            return None

    def round_match_groups(self, round, broadcasted, hide_empty_matches):
        groups = []

        matches = round.match_set.all()
        if hide_empty_matches:
            matches = [m for m in matches if m.should_appear()]

        if matches:
            group = self.create_match_group(round.name(), round.match_set.all(), broadcasted)
            groups.append(group)

            ranking_matches = round.ranking_matches(hide_empty_matches)
            if len(ranking_matches) > 0:
                group = self.create_match_group('Matchs de classement', ranking_matches, broadcasted)
                groups.append(group)

        return groups

    def create_match_group(self, name, matches, broadcasted):
        matches = list(matches)
        # if not broadcasted:
        #     matches = [m for m in matches if m.should_appear()]
        matches.sort(key=lambda m: m.order)
        live_matches = [match.live_match() for match in matches]
        return MatchGroup(name, live_matches)

    def live_group_stages(self):
        return [gs.live_group_stages() for gs in self.groupstage_set.all()]

    def broadcast_content(self):

        now = timezone.now()

        today_matches = [match for match in self.all_matches() if match.start_date.date() == now]
        today_matches.sort(key=lambda m: m.start_date)

        matches, group_stages = self.broadcasted_matches_and_group_stages()
        group_stages_dicts = [gs.to_dict() for gs in group_stages]

        # if now is before the first match, we want to show the summons + group stage or first matches
        if today_matches and now < today_matches[0].start_date:
            team_summons_dicts = [summon.to_dict() for summon in self.team_summons()]
            if group_stages:
                return {
                    'matches': [],
                    'group_stages': group_stages_dicts,
                    'summons': team_summons_dicts,
                }
            else:
                live_matches_dicts = [match.live_match().to_dict() for match in matches]
                return {
                    'matches': live_matches_dicts,
                    'group_stages': [],
                    'summons': team_summons_dicts,
                }
        else: # we want to display the broadcasted content
            live_matches_dicts = [match.live_match().to_dict() for match in matches]
            return {
                'matches': live_matches_dicts,
                'group_stages': group_stages_dicts,
                'summons': [],
            }

    def broadcasted_matches_and_group_stages(self):

        matches = []
        group_stages = []
        last_started_match = self.last_started_match()
        current_round = last_started_match.round
        if current_round:

            previous_round = self.round_for_index(current_round.index + 1)
            if previous_round:
                matches.extend(current_round.get_matches_recursive(False))
                matches.extend(previous_round.get_matches_recursive(False))
            else:
                matches.extend(current_round.all_matches())
                group_stages = self.live_group_stages()
        else:
            matches = self.group_stages_matches()

        return matches, group_stages

    def all_matches(self):
        matches = []
        for round in self.round_set.all():
            matches.extend(round.all_matches())
        for group_stage in self.groupstage_set.all():
            matches.extend(group_stage.match_set.all())
        return matches

    def last_started_match(self):
        matches = [m for m in self.all_matches() if m.start_date]
        matches.sort(key=lambda m: m.start_date, reverse=True)
        return matches[0]

    def round_for_index(self, index):
        return self.round_set.filter(index=index,loser=None).first()

    def group_stages_matches(self):
        matches = []
        for group_stage in self.groupstage_set.all():
            matches.extend(group_stage.match_set.all())
        matches = [m for m in matches if m.should_appear()]
        matches.sort(key=lambda m: m.start_date, reverse=True)
        return matches

class MatchGroup:
    def __init__(self, name, matches):
        self.name = name
        self.matches = matches

    def add_match(self, match):
        self.matches.append(match)

    def add_matches(self, matches):
            self.matches = matches

class TeamSummon:
    def __init__(self, names, date, weight, stage, image):
        self.names = names
        self.date = date
        self.weight = weight
        self.stage = stage
        self.image = image

    def formatted_date(self):
        timezoned_datetime = timezone.localtime(self.date)
        return formats.date_format(timezoned_datetime, format='H:i')

    def to_dict(self):
        return {
            "names": self.names,
            "date": self.formatted_date(),
            "weight": self.weight,
            "stage": self.stage,
            "image": self.image,
        }