from django.contrib import admin
from django.utils.html import format_html
from import_export.admin import ImportExportMixin, ImportExportModelAdmin
from simple_history.admin import SimpleHistoryAdmin

from .models import CloudKitConfiguration, CloudKitSyncState, CloudKitSyncJob
from .resources import CloudKitConfigurationResource, CloudKitSyncStateResource, CloudKitSyncJobResource


@admin.register(CloudKitConfiguration)
class CloudKitConfigurationAdmin(ImportExportMixin, SimpleHistoryAdmin):
    resource_class = CloudKitConfigurationResource
    list_display = [
        'name',
        'environment',
        'container_id',
        'is_active_badge',
        'auto_sync_after_scrape',
        'batch_size',
    ]
    list_filter = ['environment', 'is_active']
    search_fields = ['name', 'container_id']
    readonly_fields = ['created_at', 'updated_at']

    fieldsets = [
        (None, {
            'fields': ['name', 'environment', 'is_active']
        }),
        ('CloudKit Credentials', {
            'fields': ['container_id', 'key_id', 'private_key', 'private_key_path'],
            'description': 'Enter your private key content directly OR provide a file path'
        }),
        ('Sync Settings', {
            'fields': ['batch_size', 'auto_sync_after_scrape']
        }),
        ('Metadata', {
            'fields': ['created_at', 'updated_at'],
            'classes': ['collapse']
        }),
    ]

    actions = ['run_sync', 'test_connection']

    def is_active_badge(self, obj):
        if obj.is_active:
            return format_html(
                '<span style="color: green; font-weight: bold;">● ACTIVE</span>'
            )
        return format_html('<span style="color: gray;">○ Inactive</span>')
    is_active_badge.short_description = 'Status'

    @admin.action(description='Run sync with selected configuration')
    def run_sync(self, request, queryset):
        from cloudkit.tasks import run_cloudkit_sync
        for config in queryset:
            run_cloudkit_sync.delay(config.id)
        self.message_user(request, f'Started {queryset.count()} sync jobs.')

    @admin.action(description='Test CloudKit connection')
    def test_connection(self, request, queryset):
        from django.contrib import messages
        for config in queryset:
            try:
                client = config.get_client()
                if client.test_connection():
                    self.message_user(
                        request,
                        f'✓ {config.name}: Connection successful!',
                        messages.SUCCESS
                    )
                else:
                    self.message_user(
                        request,
                        f'✗ {config.name}: Connection failed',
                        messages.ERROR
                    )
            except Exception as e:
                self.message_user(
                    request,
                    f'✗ {config.name}: {str(e)}',
                    messages.ERROR
                )


@admin.register(CloudKitSyncState)
class CloudKitSyncStateAdmin(ImportExportModelAdmin):
    resource_class = CloudKitSyncStateResource
    list_display = [
        'record_id',
        'record_type',
        'sync_status_badge',
        'last_synced',
        'retry_count',
    ]
    list_filter = ['sync_status', 'record_type']
    search_fields = ['record_id', 'cloudkit_record_name']
    ordering = ['-updated_at']
    readonly_fields = [
        'record_type',
        'record_id',
        'cloudkit_record_name',
        'local_hash',
        'remote_change_tag',
        'last_synced',
        'last_error',
        'retry_count',
        'created_at',
        'updated_at',
    ]

    actions = ['mark_pending', 'retry_failed']

    def has_add_permission(self, request):
        return False

    def sync_status_badge(self, obj):
        colors = {
            'pending': '#f0ad4e',
            'synced': '#5cb85c',
            'failed': '#d9534f',
            'deleted': '#999',
        }
        color = colors.get(obj.sync_status, '#999')
        return format_html(
            '<span style="background-color: {}; color: white; padding: 3px 8px; '
            'border-radius: 3px; font-size: 11px;">{}</span>',
            color,
            obj.sync_status.upper()
        )
    sync_status_badge.short_description = 'Status'

    @admin.action(description='Mark selected as pending sync')
    def mark_pending(self, request, queryset):
        updated = queryset.update(sync_status='pending')
        self.message_user(request, f'{updated} records marked as pending.')

    @admin.action(description='Retry failed syncs')
    def retry_failed(self, request, queryset):
        updated = queryset.filter(sync_status='failed').update(
            sync_status='pending',
            retry_count=0
        )
        self.message_user(request, f'{updated} failed records queued for retry.')


@admin.register(CloudKitSyncJob)
class CloudKitSyncJobAdmin(ImportExportModelAdmin):
    resource_class = CloudKitSyncJobResource
    list_display = [
        'id',
        'configuration',
        'status_badge',
        'triggered_by',
        'started_at',
        'duration_display',
        'records_summary',
    ]
    list_filter = ['status', 'configuration', 'triggered_by']
    date_hierarchy = 'created_at'
    ordering = ['-created_at']
    readonly_fields = [
        'configuration',
        'status',
        'triggered_by',
        'started_at',
        'finished_at',
        'duration_display',
        'records_synced',
        'records_created',
        'records_updated',
        'records_deleted',
        'records_failed',
        'sport_filter',
        'record_type_filter',
        'error_message',
        'celery_task_id',
        'created_at',
        'updated_at',
    ]

    def has_add_permission(self, request):
        return False

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

    def status_badge(self, obj):
        colors = {
            'pending': '#999',
            'running': '#f0ad4e',
            'completed': '#5cb85c',
            'failed': '#d9534f',
            'cancelled': '#777',
        }
        color = colors.get(obj.status, '#999')
        return format_html(
            '<span style="background-color: {}; color: white; padding: 3px 8px; '
            'border-radius: 3px; font-size: 11px;">{}</span>',
            color,
            obj.status.upper()
        )
    status_badge.short_description = 'Status'

    def records_summary(self, obj):
        if obj.records_synced == 0 and obj.status != 'completed':
            return '-'
        return format_html(
            '<span title="Created: {}, Updated: {}, Deleted: {}, Failed: {}">'
            '{} synced ({} new)</span>',
            obj.records_created, obj.records_updated, obj.records_deleted, obj.records_failed,
            obj.records_synced, obj.records_created
        )
    records_summary.short_description = 'Records'