"""
Django Management Command: populate_book_references

Creates 10 Islamic Hadith BookReference objects with related images.
Usage: python manage.py populate_book_references
"""

import os
import random
from django.core.management.base import BaseCommand
from django.core.files import File
from django.conf import settings
from apps.hadis.models import BookReference, BookReferenceImage

class Command(BaseCommand):
    help = 'Create 10 Islamic Hadith BookReference objects with images'

    def handle(self, *args, **options):
        # ---------------------------------------------------------
        # 1. CLEANUP: Delete existing data
        # ---------------------------------------------------------
        self.stdout.write(self.style.WARNING('Deleting existing BookReferences...'))
        count = BookReference.objects.all().delete()[0]
        self.stdout.write(self.style.SUCCESS(f'✓ Deleted {count} existing records.'))

        # ---------------------------------------------------------
        # 2. SETUP PATHS
        # ---------------------------------------------------------
        base_dir = settings.BASE_DIR
        seeds_path = os.path.join(base_dir, 'seeds', 'images')
        
        # We will cycle through book1.png to book5.png
        image_filenames = [f'book{i}.png' for i in range(1, 6)]

        # Verify directory exists
        if not os.path.exists(seeds_path):
            self.stdout.write(self.style.ERROR(f"Directory not found: {seeds_path}"))
            return

        # ---------------------------------------------------------
        # 3. DEFINE DATA (10 Islamic Hadith Books)
        # ---------------------------------------------------------
        references_data = [
            {
                "title_en": "Sahih al-Bukhari",
                "title_fa": "صحیح بخاری",
                "desc": "One of the most authentic collections of Hadith in Sunni Islam.",
                "publisher": "Darussalam",
                "year": "846",
                "vol": "9"
            },
            {
                "title_en": "Al-Kafi",
                "title_fa": "الکافی",
                "desc": "The most significant collection of Shia Hadith by Kulayni.",
                "publisher": "Dar al-Kutub al-Islamiyya",
                "year": "941",
                "vol": "8"
            },
            {
                "title_en": "Sahih Muslim",
                "title_fa": "صحیح مسلم",
                "desc": "Considered the second most authentic book after Bukhari.",
                "publisher": "Dar-us-Salam",
                "year": "875",
                "vol": "7"
            },
            {
                "title_en": "Nahj al-Balagha",
                "title_fa": "نهج البلاغه",
                "desc": "A collection of sermons, letters, and sayings of Imam Ali (AS).",
                "publisher": "Ansariyan Publications",
                "year": "1010",
                "vol": "1"
            },
            {
                "title_en": "Sunan Abu Dawood",
                "title_fa": "سنن ابوداوود",
                "desc": "A collection of Hadith focusing on legal matters (Fiqh).",
                "publisher": "Maktabah al-Assriya",
                "year": "888",
                "vol": "5"
            },
            {
                "title_en": "Man La Yahduruhu al-Faqih",
                "title_fa": "من لا یحضره الفقیه",
                "desc": "For him who is not in the presence of a jurisprudent - Shia collection.",
                "publisher": "Jami'at al-Mudarisin",
                "year": "991",
                "vol": "4"
            },
            {
                "title_en": "Jami` at-Tirmidhi",
                "title_fa": "جامع ترمذی",
                "desc": "Known for categorizing Hadith by authenticity (Sahih, Hasan, Da'if).",
                "publisher": "Dar al-Gharb al-Islami",
                "year": "892",
                "vol": "6"
            },
            {
                "title_en": "Tahdhib al-Ahkam",
                "title_fa": "تهذیب الاحکام",
                "desc": "A classic Shia Hadith collection by Shaykh Tusi.",
                "publisher": "Dar al-Adwa",
                "year": "1067",
                "vol": "10"
            },
            {
                "title_en": "Sunan an-Nasa'i",
                "title_fa": "سنن نسائی",
                "desc": "Highly regarded collection with very few weak hadiths.",
                "publisher": "Dar al-Ma'rifa",
                "year": "915",
                "vol": "6"
            },
            {
                "title_en": "Bihar al-Anwar",
                "title_fa": "بحار الانوار",
                "desc": "The most comprehensive collection of Shia traditions by Majlisi.",
                "publisher": "Al-Wafa",
                "year": "1698",
                "vol": "110"
            }
        ]

        # ---------------------------------------------------------
        # 4. CREATE RECORDS
        # ---------------------------------------------------------
        self.stdout.write("Starting creation process...")

        for index, data in enumerate(references_data):
            try:
                # A. Create the BookReference
                book_ref = BookReference.objects.create(
                    title=[
                        {"language_code": "en", "text": data["title_en"]},
                        {"language_code": "fa", "text": data["title_fa"]}
                    ],
                    description=[
                        {"language_code": "en", "text": data["desc"]},
                        {"language_code": "fa", "text": f"توضیحات درباره {data['title_fa']}"}
                    ],
                    language=[
                        {"language_code": "en", "text": "Arabic/English"},
                        {"language_code": "fa", "text": "عربی/فارسی"}
                    ],
                    isbn=f"978-{random.randint(100,999)}-{random.randint(1000,9999)}-{index}",
                    volume=data["vol"],
                    year_of_publication=data["year"],
                    number_page=random.randint(300, 1500),
                    # Slug is handled by model .save() method automatically
                    publisher=[
                        {"language_code": "en", "text": data["publisher"]},
                        {"language_code": "fa", "text": data["publisher"]}
                    ],
                    rate=round(random.uniform(4.0, 5.0), 2)
                )

                # B. Create and Save the Image (BookReferenceImage)
                # Cycle through images: 0->book1, 1->book2... 5->book1
                img_name = image_filenames[index % len(image_filenames)]
                img_path = os.path.join(seeds_path, img_name)

                if os.path.exists(img_path):
                    with open(img_path, 'rb') as f:
                        # Create the Image object
                        ref_image = BookReferenceImage(
                            book_reference=book_ref,
                            order=0,
                            description=[{"language_code": "en", "text": f"Cover of {data['title_en']}"}]
                        )
                        # Save file content (THIS COPIES IT TO MEDIA VOLUME)
                        ref_image.image.save(img_name, File(f), save=True)
                else:
                    self.stdout.write(self.style.WARNING(f"Image not found: {img_name}"))

                self.stdout.write(self.style.SUCCESS(f"✓ Created: {data['title_en']}"))

            except Exception as e:
                self.stdout.write(self.style.ERROR(f"Error creating {data['title_en']}: {e}"))

        self.stdout.write(self.style.SUCCESS('\n=========================================='))
        self.stdout.write(self.style.SUCCESS(f'Successfully populated {len(references_data)} BookReferences!'))