from django.contrib import admin
from django.utils.safestring import mark_safe
from quiz.models import QuizUser


@admin.register(QuizUser)
class QuizUserAdmin(admin.ModelAdmin):
    """Admin interface for Quiz Users"""
    list_display = ['id', 'session_preview', 'result_count', 'score_percentage', 'created_at']
    list_filter = ['created_at']
    search_fields = ['session_key']
    readonly_fields = ['session_key', 'created_at', 'full_session_key']
    fieldsets = [
        ('User Info', {
            'fields': ['full_session_key', 'created_at']
        }),
    ]

    def session_preview(self, obj):
        """Show session key preview"""
        return f"{obj.session_key[:12]}..."
    session_preview.short_description = 'Session'

    def result_count(self, obj):
        """Show number of quiz results"""
        return obj.results.count()
    result_count.short_description = '# Answers'

    def score_percentage(self, obj):
        """Show score percentage"""
        total = obj.results.count()
        if total == 0:
            return '-'
        correct = obj.results.filter(is_correct=True).count()
        percentage = (correct / total * 100)
        color = 'green' if percentage >= 70 else 'orange' if percentage >= 50 else 'red'
        return mark_safe(
            f'<span style="color: {color}; font-weight: bold;">{percentage:.1f}%</span> ({correct}/{total})'
        )
    score_percentage.short_description = 'Score'

    def full_session_key(self, obj):
        """Show full session key"""
        return obj.session_key
    full_session_key.short_description = 'Full Session Key'