from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from django.utils import timezone
from django.contrib.admin.models import LogEntry, ADDITION, CHANGE, DELETION
from django.utils.html import escape
from django.urls import reverse
from django.utils.safestring import mark_safe

from .models import Club, TeamScore, Tournament, CustomUser, Event, Round, GroupStage, Match, TeamRegistration, PlayerRegistration, Purchase, Court, DateInterval, FailedApiCall, Log, DeviceToken, DrawLog, UnregisteredTeam, UnregisteredPlayer, Image
from .forms import CustomUserCreationForm, CustomUserChangeForm
from .filters import TeamScoreTournamentListFilter, MatchTournamentListFilter, SimpleTournamentListFilter, MatchTypeListFilter, SimpleIndexListFilter, StartDateRangeFilter

from sync.admin import SyncedObjectAdmin

class CustomUserAdmin(UserAdmin):
    form = CustomUserChangeForm
    add_form = CustomUserCreationForm
    model = CustomUser
    search_fields = ['username', 'email', 'phone', 'first_name', 'last_name', 'licence_id']

    list_display = ['email', 'first_name', 'last_name', 'username', 'date_joined', 'latest_event_club_name', 'is_active', 'event_count', 'origin', 'registration_payment_mode', 'licence_id']
    list_filter = ['is_active', 'origin']
    ordering = ['-date_joined']
    raw_id_fields = ['agents']
    fieldsets = [
        (None, {'fields': ['id', 'username', 'email', 'password', 'first_name', 'last_name', 'is_active', 'registration_payment_mode',
            'clubs', 'country', 'phone', 'licence_id', 'umpire_code',
            'summons_message_body', 'summons_message_signature', 'summons_available_payment_methods',
            'summons_display_format', 'summons_display_entry_fee', 'summons_use_full_custom_message',
            'match_formats_default_duration', 'bracket_match_format_preference', 'group_stage_match_format_preference',
            'loser_bracket_match_format_preference', 'device_id', 'loser_bracket_mode', 'groups', 'origin', 'agents', 'should_synchronize'
        ]}),
        ]
    add_fieldsets = [
        (
            None,
            {
                "classes": ["wide"],
                "fields": ['username', 'email', 'password1', 'password2', 'first_name', 'last_name', 'clubs', 'country', 'phone', 'licence_id', 'umpire_code', 'groups'],
            },
        ),
    ]

    def save_model(self, request, obj, form, change):
        obj.last_update = timezone.now()
        super().save_model(request, obj, form, change)

class EventAdmin(SyncedObjectAdmin):
    list_display = ['creation_date', 'name', 'club', 'creator', 'creator_full_name', 'tenup_id', 'display_images']
    list_filter = ['creator', 'tenup_id']
    raw_id_fields = ['creator']
    ordering = ['-creation_date']
    readonly_fields = ['display_images_preview']

    fieldsets = [
        (None, {'fields': ['name', 'club', 'creator', 'creation_date', 'tenup_id']}),
        ('Images', {'fields': ['display_images_preview'], 'classes': ['collapse']}),
    ]

    def display_images(self, obj):
        count = obj.images.count()
        return count if count > 0 else '-'
    display_images.short_description = 'Images'

    def display_images_preview(self, obj):
        html = '<div style="display: flex; flex-wrap: wrap; gap: 10px;">'
        for image in obj.images.all():
            html += f'''
            <div style="text-align: center; margin-bottom: 15px;">
                <img src="{image.image.url}" style="max-width: 150px; max-height: 150px; object-fit: contain;" />
                <p style="margin: 5px 0 0 0; font-size: 12px;">
                    <strong>{image.title or "Untitled"}</strong><br>
                    Type: {image.get_image_type_display()}<br>
                </p>
            </div>
            '''
        html += '</div>'
        if not obj.images.exists():
            html = '<p>No images uploaded for this event.</p>'
        return mark_safe(html)
    display_images_preview.short_description = 'Images Preview'

class TournamentAdmin(SyncedObjectAdmin):
    list_display = ['display_name', 'event', 'is_private', 'start_date', 'payment', 'creator', 'is_canceled']
    list_filter = [StartDateRangeFilter, 'is_deleted', 'event__creator']
    ordering = ['-start_date']
    search_fields = ['id']

class TeamRegistrationAdmin(SyncedObjectAdmin):
    list_display = ['player_names', 'group_stage', 'name', 'tournament', 'registration_date']
    list_filter = [SimpleTournamentListFilter]
    search_fields = ['id']

class TeamScoreAdmin(SyncedObjectAdmin):
    list_display = ['team_registration', 'score', 'walk_out', 'match']
    list_filter = [TeamScoreTournamentListFilter]
    search_fields = ['id']
    raw_id_fields = ['team_registration', 'match']  # Add this line
    list_per_page = 50  # Controls pagination on the list view

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('team_registration', 'match')

class RoundAdmin(SyncedObjectAdmin):
    list_display = ['tournament', 'name', 'parent', 'index']
    list_filter = [SimpleTournamentListFilter, SimpleIndexListFilter]
    search_fields = ['id']
    ordering = ['parent', 'index']
    raw_id_fields = ['parent']  # Add this line
    list_per_page = 50  # Controls pagination on the list view

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('parent')

class PlayerRegistrationAdmin(SyncedObjectAdmin):
    list_display = ['first_name', 'last_name', 'licence_id', 'rank']
    search_fields = ['id', 'first_name', 'last_name', 'licence_id__icontains']
    list_filter = ['registered_online', TeamScoreTournamentListFilter]
    ordering = ['last_name', 'first_name']
    raw_id_fields = ['team_registration']  # Add this line
    list_per_page = 50  # Controls pagination on the list view

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('team_registration')

class MatchAdmin(SyncedObjectAdmin):
    list_display = ['__str__', 'round', 'group_stage', 'start_date', 'end_date', 'index']
    list_filter = [MatchTypeListFilter, MatchTournamentListFilter, SimpleIndexListFilter]
    ordering = ['-group_stage', 'round', 'index']
    raw_id_fields = ['round', 'group_stage']  # Add this line
    list_per_page = 50  # Controls pagination on the list view

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('round', 'group_stage')

class GroupStageAdmin(SyncedObjectAdmin):
    list_display = ['tournament', 'start_date', 'index']
    list_filter = [SimpleTournamentListFilter]
    ordering = ['-start_date', 'index']

class ClubAdmin(SyncedObjectAdmin):
    list_display = ['name', 'acronym', 'city', 'creator', 'events_count', 'broadcast_code']
    search_fields = ['name', 'acronym', 'city']
    ordering = ['creator']
    raw_id_fields = ['creator', 'related_user']

class PurchaseAdmin(SyncedObjectAdmin):
    list_display = ['id', 'user', 'product_id', 'quantity', 'purchase_date', 'revocation_date', 'expiration_date']
    list_filter = ['user']
    ordering = ['-purchase_date']

class CourtAdmin(SyncedObjectAdmin):
    list_display = ['index', 'name', 'club']
    ordering = ['club']

class DateIntervalAdmin(SyncedObjectAdmin):
    list_display = ['court_index', 'event']

class FailedApiCallAdmin(admin.ModelAdmin):
    list_display = ['date', 'user', 'type', 'error']
    list_filter = ['user']

class LogAdmin(admin.ModelAdmin):
    list_display = ['date', 'user', 'message']
    list_filter = ['user']

class DeviceTokenAdmin(admin.ModelAdmin):
    list_display = ['user', 'value']
    list_filter = ['user']

class DrawLogAdmin(SyncedObjectAdmin):
    list_display = ['tournament', 'draw_date', 'draw_seed', 'draw_match_index', 'draw_team_position']
    list_filter = [SimpleTournamentListFilter]
    ordering = ['draw_date']

class UnregisteredTeamAdmin(admin.ModelAdmin):
    list_display = ['player_names', 'tournament']
    list_filter = [SimpleTournamentListFilter]

class UnregisteredPlayerAdmin(admin.ModelAdmin):
    list_display = ['first_name', 'last_name', 'licence_id']
    search_fields = ['first_name', 'last_name']
    list_filter = []
    ordering = ['last_name', 'first_name']

class ImageAdmin(admin.ModelAdmin):
    list_display = ['title', 'event', 'image_type', 'order', 'uploaded_at', 'file_size', 'image_preview_small']
    list_filter = ['event', 'image_type', 'uploaded_at']
    search_fields = ['title', 'description', 'event__name']
    ordering = ['order']
    readonly_fields = ['id', 'uploaded_at', 'image_preview', 'file_size']
    raw_id_fields = ['event']

    def image_preview(self, obj):
        if obj.image:
            return mark_safe(f'<img src="{obj.image.url}" width="150" height="auto" style="max-height: 150px; object-fit: contain;" />')
        return "No Image"
    image_preview.short_description = 'Preview'

    def image_preview_small(self, obj):
        if obj.image:
            return mark_safe(f'<img src="{obj.image.url}" width="50" height="auto" style="max-height: 50px; object-fit: contain;" />')
        return "No Image"
    image_preview_small.short_description = 'Preview'

    def file_size(self, obj):
        if obj.image and hasattr(obj.image, 'size'):
            # Convert bytes to KB or MB
            size_bytes = obj.image.size
            if size_bytes < 1024:
                return f"{size_bytes} bytes"
            elif size_bytes < 1024 * 1024:
                return f"{size_bytes/1024:.1f} KB"
            else:
                return f"{size_bytes/(1024*1024):.1f} MB"
        return "Unknown"
    file_size.short_description = 'File Size'


action_flags = {
    ADDITION: 'Addition',
    CHANGE: 'Change',
    DELETION: 'Deletion',
}

@admin.register(LogEntry)
class LogEntryAdmin(admin.ModelAdmin):
    date_hierarchy = 'action_time'
    list_filter = ['user', 'content_type', 'action_flag']
    search_fields = ['object_repr', 'change_message']
    list_display = ['action_time', 'user', 'content_type', 'object_link', 'action_flag_display', 'change_message']
    readonly_fields = [field.name for field in LogEntry._meta.get_fields()]

    def has_add_permission(self, request):
        return False

    def has_change_permission(self, request, obj=None):
        return False

    def has_delete_permission(self, request, obj=None):
        return False

    def object_link(self, obj):
        if obj.action_flag == DELETION:
            link = escape(obj.object_repr)
        else:
            ct = obj.content_type
            try:
                link = '<a href="%s">%s</a>' % (
                    reverse('admin:%s_%s_change' % (ct.app_label, ct.model),
                            args=[obj.object_id]),
                    escape(obj.object_repr),
                )
            except:
                link = escape(obj.object_repr)
        return mark_safe(link)
    object_link.short_description = 'Object'

    def action_flag_display(self, obj):
        return action_flags.get(obj.action_flag, '')
    action_flag_display.short_description = 'Action'

admin.site.register(CustomUser, CustomUserAdmin)
admin.site.register(Club, ClubAdmin)
admin.site.register(Event, EventAdmin)
admin.site.register(Round, RoundAdmin)
admin.site.register(GroupStage, GroupStageAdmin)
admin.site.register(Match, MatchAdmin)
admin.site.register(TeamScore, TeamScoreAdmin)
admin.site.register(TeamRegistration, TeamRegistrationAdmin)
admin.site.register(Tournament, TournamentAdmin)
admin.site.register(PlayerRegistration, PlayerRegistrationAdmin)
admin.site.register(Purchase, PurchaseAdmin)
admin.site.register(Court, CourtAdmin)
admin.site.register(DateInterval, DateIntervalAdmin)
admin.site.register(FailedApiCall, FailedApiCallAdmin)
admin.site.register(Log, LogAdmin)
admin.site.register(DeviceToken, DeviceTokenAdmin)
admin.site.register(DrawLog, DrawLogAdmin)
admin.site.register(UnregisteredTeam, UnregisteredTeamAdmin)
admin.site.register(UnregisteredPlayer, UnregisteredPlayerAdmin)
admin.site.register(Image, ImageAdmin)