from django.db import models
from . import Event, TournamentPayment, 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)
    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)
    payment = models.IntegerField(default=TournamentPayment.FREE, choices=TournamentPayment.choices, null=True, blank=True)

    def __str__(self):
        if self.name:
            return self.name
        else:
            return self.display_name()

    def display_name(self):
        if self.name:
            return self.name
        else:
            return f"{self.level()} {self.category()}"

    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():
            if team_registration.is_valid_for_summon():
                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.filter(parent=None).all().order_by('index'):
            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.order_by('index').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.index)
        live_matches = [match.live_match() for match in matches]
        return MatchGroup(name, live_matches)

    def live_group_stages(self):
        group_stages = list(self.groupstage_set.all())
        group_stages.sort(key=lambda gs: gs.index)
        return [gs.live_group_stages() for gs in group_stages]

    def broadcast_content(self):

        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 timezone.now() < self.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 = []

        if self.group_stages_running():
            matches = self.group_stages_matches()
        else:
            last_started_match = self.first_unfinished_match()
            current_round = last_started_match.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()

        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 group_stages_running(self):
        if len(self.groupstage_set.all()) > 0:
            running_group_stage_matches = Match.objects.filter(group_stage__is_null=False, end_date=None)
            return len(running_group_stage_matches) > 0
        else:
            return False

    def first_unfinished_match(self):
        matches = [m for m in self.all_matches() if m.start_date and m.end_date is None]
        matches.sort(key=lambda m: m.start_date)
        return matches[0]

    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,parent=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):
        if self.date:
            timezoned_datetime = timezone.localtime(self.date)
            return formats.date_format(timezoned_datetime, format='H:i')
        else:
            return None

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