from django.contrib import admin
from django.utils.html import format_html
from django.db.models import Avg
from .models import Ride, RollerCoasterStats

class RollerCoasterStatsInline(admin.StackedInline):
    model = RollerCoasterStats
    can_delete = False
    extra = 0
    fieldsets = (
        ('Basic Stats', {
            'fields': (
                ('height_ft', 'length_ft'),
                ('speed_mph', 'inversions'),
                'ride_time_seconds'
            )
        }),
        ('Track Details', {
            'fields': (
                'track_type',
                'launch_type'
            )
        }),
        ('Train Configuration', {
            'fields': (
                'train_style',
                ('trains_count', 'cars_per_train', 'seats_per_car')
            )
        }),
    )

@admin.register(Ride)
class RideAdmin(admin.ModelAdmin):
    list_display = ('id', 'name', 'park', 'category', 'get_status', 'manufacturer', 'opening_date', 'get_avg_rating')
    list_filter = ('status', 'category', 'manufacturer', 'park')
    search_fields = ('name', 'park__name', 'manufacturer__name', 'description')
    prepopulated_fields = {'slug': ('name',)}
    inlines = [RollerCoasterStatsInline]
    readonly_fields = ('id', 'created_at', 'updated_at')
    actions = ['mark_as_operating', 'mark_as_closed', 'mark_as_under_maintenance', 'mark_as_removed']

    fieldsets = (
        ('Basic Information', {
            'fields': (
                'name',
                'slug',
                'description',
                'park',
                'park_area'
            )
        }),
        ('Ride Details', {
            'fields': (
                'category',
                'manufacturer',
                'model_name',
                'status'
            )
        }),
        ('Dates', {
            'fields': (
                'opening_date',
                'closing_date',
                'status_since'
            )
        }),
        ('Requirements', {
            'fields': (
                'min_height_in',
                'max_height_in',
                'accessibility_options'
            )
        }),
        ('Capacity', {
            'fields': (
                'capacity_per_hour',
                'ride_duration_seconds'
            )
        }),
        ('Metadata', {
            'fields': ('id', 'created_at', 'updated_at'),
            'classes': ('collapse',)
        }),
    )

    def get_status(self, obj):
        status_colors = {
            'OPERATING': 'green',
            'CLOSED_TEMP': 'orange',
            'CLOSED_PERM': 'red',
            'UNDER_CONSTRUCTION': 'blue',
            'DEMOLISHED': 'grey',
            'RELOCATED': 'purple'
        }
        return format_html(
            '<span style="color: {};">{}</span>',
            status_colors.get(obj.status, 'black'),
            obj.get_status_display()
        )
    get_status.short_description = 'Status'

    def get_avg_rating(self, obj):
        avg = obj.reviews.filter(is_published=True).aggregate(avg_rating=Avg('rating'))['avg_rating']
        if avg:
            rating_str = '{:.1f}'.format(float(avg))
            return format_html(
                '<span style="color: gold;">★ {}</span>',
                rating_str
            )
        return '-'
    get_avg_rating.short_description = 'Rating'

    def mark_as_operating(self, request, queryset):
        queryset.update(status='OPERATING')
    mark_as_operating.short_description = "Mark selected rides as operating"

    def mark_as_closed(self, request, queryset):
        queryset.update(status='CLOSED_TEMP')
    mark_as_closed.short_description = "Mark selected rides as temporarily closed"

    def mark_as_under_maintenance(self, request, queryset):
        queryset.update(status='CLOSED_TEMP')
    mark_as_under_maintenance.short_description = "Mark selected rides as under maintenance"

    def mark_as_removed(self, request, queryset):
        queryset.update(status='DEMOLISHED')
    mark_as_removed.short_description = "Mark selected rides as demolished"

@admin.register(RollerCoasterStats)
class RollerCoasterStatsAdmin(admin.ModelAdmin):
    list_display = ('ride', 'height_ft', 'length_ft', 'speed_mph', 'inversions', 'get_capacity')
    list_filter = ('launch_type', 'track_type', 'train_style')
    search_fields = ('ride__name', 'track_type')
    readonly_fields = ('id', 'ride')
    
    fieldsets = (
        ('Basic Stats', {
            'fields': (
                'id',
                'ride',
                ('height_ft', 'length_ft'),
                ('speed_mph', 'inversions'),
                'ride_time_seconds'
            )
        }),
        ('Track Details', {
            'fields': (
                'track_type',
                'launch_type'
            )
        }),
        ('Train Configuration', {
            'fields': (
                'train_style',
                ('trains_count', 'cars_per_train', 'seats_per_car')
            )
        }),
    )

    def get_capacity(self, obj):
        if obj.trains_count and obj.cars_per_train and obj.seats_per_car:
            capacity = obj.trains_count * obj.cars_per_train * obj.seats_per_car
            return format_html(
                '{} seats total',
                str(capacity)
            )
        return '-'
    get_capacity.short_description = 'Total Capacity'