import random
from datetime import time, timedelta
from django.core.management.base import BaseCommand
from django.utils import timezone
from core.models import (
    AppUser, Library, Genre, ContentRating, MediaSource, 
    Series, MediaItem, Channel, ScheduleTemplate, ScheduleBlock, Airing
)

class Command(BaseCommand):
    help = 'Seeds the database with mock PYTV data including users, libraries, media, and channels.'

    def handle(self, *args, **kwargs):
        self.stdout.write("Flushing existing data...")
        # Since we cascade everything, deleting users usually drops almost everything
        AppUser.objects.filter(username__startswith='mock_').delete()
        Genre.objects.all().delete()
        ContentRating.objects.all().delete()
        
        self.stdout.write("Seeding Users...")
        admin_user = AppUser.objects.create_superuser('mock_admin', 'admin@pytv.local', 'admin')
        viewer_user = AppUser.objects.create_user('mock_viewer', 'viewer@pytv.local', 'password')

        self.stdout.write("Seeding Genres & Ratings...")
        g_action = Genre.objects.create(name="Action")
        g_comedy = Genre.objects.create(name="Comedy")
        g_drama = Genre.objects.create(name="Drama")
        g_scifi = Genre.objects.create(name="Sci-Fi")
        g_promo = Genre.objects.create(name="Promo/Bumper")
        
        r_pg = ContentRating.objects.create(system_name="TV Parental Guidelines", code="TV-PG", min_age=8)
        r_14 = ContentRating.objects.create(system_name="TV Parental Guidelines", code="TV-14", min_age=14)
        r_ma = ContentRating.objects.create(system_name="TV Parental Guidelines", code="TV-MA", min_age=17)

        self.stdout.write("Seeding Library & Media Sources...")
        lib = Library.objects.create(
            owner_user=admin_user, 
            name="Main Broadcasting Library", 
            visibility="public",
            description="The core streaming library for PYTV mock."
        )
        
        source_movies = MediaSource.objects.create(
            library=lib,
            name="Mocked Local Movies",
            source_type="local_directory",
            uri="/mock/movies"
        )
        
        source_tv = MediaSource.objects.create(
            library=lib,
            name="Mocked Local TV Shows",
            source_type="local_directory",
            uri="/mock/tv"
        )

        source_bumpers = MediaSource.objects.create(
            library=lib,
            name="Network Bumpers",
            source_type="local_directory",
            uri="/mock/bumpers"
        )
        
        self.stdout.write("Seeding Series & Media Items...")
        
        # Movies
        m1 = MediaItem.objects.create(
            media_source=source_movies,
            title="Space Rangers 3000",
            item_kind="movie",
            release_year=1999,
            runtime_seconds=5400, # 1.5 hours
            file_path="/mock/movies/space_rangers.mp4",
            content_rating=r_pg
        )
        m1.genres.add(g_action, g_scifi)

        m2 = MediaItem.objects.create(
            media_source=source_movies,
            title="The Laughing Policeman",
            item_kind="movie",
            release_year=2005,
            runtime_seconds=6300, # 1.75 hours
            file_path="/mock/movies/laughing_policeman.mp4",
            content_rating=r_14
        )
        m2.genres.add(g_comedy, g_action)

        # Series
        s1 = Series.objects.create(title="Neon City Nights", description="Cyberpunk detective drama.", release_year=2024)
        
        for ep in range(1, 6):
            ep_item = MediaItem.objects.create(
                media_source=source_tv,
                series=s1,
                title=f"Episode {ep}",
                item_kind="episode",
                season_number=1,
                episode_number=ep,
                runtime_seconds=2700, # 45 mins
                file_path=f"/mock/tv/neon_city_nights/s01e0{ep}.mkv",
                content_rating=r_ma
            )
            ep_item.genres.add(g_drama, g_scifi)
            
        # Bumpers
        for b in range(1, 4):
            bump = MediaItem.objects.create(
                media_source=source_bumpers,
                title=f"Station Bumper {b}",
                item_kind="bumper",
                runtime_seconds=15,
                file_path=f"/mock/bumpers/ident_{b}.mp4"
            )
            bump.genres.add(g_promo)
            
        self.stdout.write("Seeding Channels and Scheduling Blocks...")
        ch1 = Channel.objects.create(
            owner_user=admin_user,
            library=lib,
            name="PYTV One",
            slug="pytv-1",
            channel_number=1,
            description="The flagship generic network.",
            scheduling_mode="template_driven",
            visibility="public"
        )
        
        template = ScheduleTemplate.objects.create(
            channel=ch1,
            name="Standard Weekday",
            timezone_name="UTC",
            priority=10
        )
        
        # Prime time block
        b_prime = ScheduleBlock.objects.create(
            schedule_template=template,
            name="Prime Time Drama",
            block_type="programming",
            start_local_time=time(20, 0),
            end_local_time=time(23, 0),
            day_of_week_mask=127, # Everyday
            default_genre=g_drama,
            rotation_strategy="sequential",
            pad_strategy="fill_with_interstitials"
        )

        ch2 = Channel.objects.create(
            owner_user=admin_user,
            library=lib,
            name="Tears of Steel Channel",
            slug="tears-of-steel",
            channel_number=2,
            description="All Sci-Fi all the time.",
            scheduling_mode="template_driven",
            visibility="public"
        )
        
        template2 = ScheduleTemplate.objects.create(
            channel=ch2,
            name="Sci-Fi Everyday",
            timezone_name="UTC",
            priority=10
        )
        
        ScheduleBlock.objects.create(
            schedule_template=template2,
            name="Sci-Fi Block",
            block_type="programming",
            start_local_time=time(0, 0),
            end_local_time=time(23, 59, 59),
            day_of_week_mask=127,
            default_genre=g_scifi,
            rotation_strategy="random",
            pad_strategy="none"
        )

        ch3 = Channel.objects.create(
            owner_user=admin_user,
            library=lib,
            name="Sintel Classics",
            slug="sintel-classics",
            channel_number=3,
            description="Classic movies and animation.",
            scheduling_mode="template_driven",
            visibility="public"
        )

        template3 = ScheduleTemplate.objects.create(
            channel=ch3,
            name="Comedy and Action",
            timezone_name="UTC",
            priority=10
        )

        ScheduleBlock.objects.create(
            schedule_template=template3,
            name="Action Comedy",
            block_type="programming",
            start_local_time=time(0, 0),
            end_local_time=time(23, 59, 59),
            day_of_week_mask=127,
            default_genre=g_action,
            rotation_strategy="random",
            pad_strategy="none"
        )

        self.stdout.write(self.style.SUCCESS("Successfully seeded the PYTV database with mock data."))