"""
Diagnostic script to check why domain dropdown shows no data.

This script will:
1. Check if taxonomy data exists in the database
2. Test the api_load_categories endpoint
3. Verify the data structure matches what the frontend expects
"""

import os
import sys
import django

# Setup Django
sys.path.insert(0, '/home/ismail/projects/HH')
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
django.setup()

from apps.complaints.models import ComplaintCategory
from apps.organizations.models import Hospital

print("=" * 80)
print("DIAGNOSTIC: Domain Dropdown Issue")
print("=" * 80)

# 1. Check total categories in database
print("\n1. Checking total categories in database...")
total_categories = ComplaintCategory.objects.count()
print(f"   Total categories: {total_categories}")

if total_categories == 0:
    print("   ❌ ERROR: No categories found in database!")
    print("   SOLUTION: Run: python manage.py load_shct_taxonomy")
    sys.exit(1)

# 2. Check categories by level
print("\n2. Checking categories by level...")
for level_num, level_name in [
    (1, "DOMAIN"),
    (2, "CATEGORY"),
    (3, "SUBCATEGORY"),
    (4, "CLASSIFICATION")
]:
    count = ComplaintCategory.objects.filter(level=level_num).count()
    print(f"   Level {level_num} ({level_name}): {count}")

# 3. Check Level 1 (Domain) categories
print("\n3. Level 1 Domain categories:")
domains = ComplaintCategory.objects.filter(level=1)
print(f"   Found {domains.count()} domain(s)")
for domain in domains:
    print(f"   - ID: {domain.id}, Name: {domain.name_en} ({domain.name_ar}), Type: {domain.domain_type}, Active: {domain.is_active}")

if domains.count() == 0:
    print("   ❌ ERROR: No Level 1 domains found!")
    print("   SOLUTION: Run: python manage.py load_shct_taxonomy")
    sys.exit(1)

# 4. Check hospitals
print("\n4. Checking hospitals...")
hospitals = Hospital.objects.filter(status="active")
print(f"   Active hospitals: {hospitals.count()}")
for hospital in hospitals:
    category_count = hospital.complaint_categories.count()
    print(f"   - {hospital.name} (ID: {hospital.id}): {category_count} hospital-specific categories")

# 5. Test API endpoint query (simulating what the frontend does)
print("\n5. Testing API endpoint query...")
if hospitals.count() > 0:
    test_hospital = hospitals.first()
    print(f"   Using hospital: {test_hospital.name} (ID: {test_hospital.id})")
    
    # This is what api_load_categories does
    from django.db.models import Q
    categories_queryset = (
        ComplaintCategory.objects.filter(
            Q(hospitals__id=test_hospital.id) | Q(hospitals__isnull=True),
            is_active=True
        )
        .distinct()
        .order_by("level", "order", "name_en")
    )
    
    print(f"   Query returned {categories_queryset.count()} categories")
    
    # Check for Level 1
    level_1_categories = categories_queryset.filter(level=1)
    print(f"   Level 1 categories in query: {level_1_categories.count()}")
    
    if level_1_categories.count() == 0:
        print("   ❌ ERROR: No Level 1 categories returned by query!")
        print("   This explains why the domain dropdown is empty.")
    else:
        print("   ✓ Level 1 categories found for domain dropdown:")
        for cat in level_1_categories:
            print(f"     - {cat.name_en}")
else:
    print("   ⚠️  No active hospitals found")
    print("   Testing with no hospital (system-wide categories)...")
    
    # System-wide only
    categories_queryset = ComplaintCategory.objects.filter(
        hospitals__isnull=True,
        is_active=True
    ).order_by("level", "order", "name_en")
    
    print(f"   Query returned {categories_queryset.count()} system-wide categories")
    level_1_categories = categories_queryset.filter(level=1)
    print(f"   Level 1 system-wide categories: {level_1_categories.count()}")

# 6. Check is_active flag
print("\n6. Checking is_active flag for domains...")
inactive_domains = ComplaintCategory.objects.filter(level=1, is_active=False)
print(f"   Inactive Level 1 domains: {inactive_domains.count()}")
if inactive_domains.count() > 0:
    print("   ⚠️  Warning: Some domains are inactive:")
    for domain in inactive_domains:
        print(f"     - {domain.name_en} (inactive)")

# 7. Sample API response format
print("\n7. Sample API response for Level 1 categories...")
from django.db.models import Q

# Get a sample hospital or use system-wide
if hospitals.exists():
    hospital_id = hospitals.first().id
    categories_queryset = (
        ComplaintCategory.objects.filter(
            Q(hospitals__id=hospital_id) | Q(hospitals__isnull=True),
            is_active=True
        )
        .distinct()
        .order_by("level", "order", "name_en")
    )
else:
    categories_queryset = ComplaintCategory.objects.filter(
        hospitals__isnull=True,
        is_active=True
    ).order_by("level", "order", "name_en")

categories = categories_queryset.values(
    "id", "name_en", "name_ar", "code", "parent_id", "level", "domain_type", "description_en", "description_ar"
)

level_1_data = [cat for cat in categories if cat['level'] == 1]

print(f"   Level 1 categories that would be sent to frontend: {len(level_1_data)}")
for cat in level_1_data:
    print(f"   - ID: {cat['id']}, Name: {cat['name_en']}, Type: {cat['domain_type']}")

# Summary
print("\n" + "=" * 80)
print("DIAGNOSTIC SUMMARY")
print("=" * 80)

if ComplaintCategory.objects.filter(level=1, is_active=True).count() > 0:
    print("✓ Database contains active Level 1 (Domain) categories")
    
    if hospitals.exists():
        if categories_queryset.filter(level=1).count() > 0:
            print("✓ API query should return Level 1 categories for the selected hospital")
            print("\n💡 POSSIBLE ISSUE: Frontend JavaScript might not be calling the API correctly")
            print("   Check browser console for JavaScript errors")
            print("   Check network tab to see if API call is being made")
        else:
            print("❌ API query returns 0 Level 1 categories")
            print("\n💡 ISSUE: Categories exist but query is not returning them")
            print("   POSSIBLE CAUSES:")
            print("   - All domains are hospital-specific but don't match selected hospital")
            print("   - All domains have is_active=False")
    else:
        print("⚠️  No active hospitals in database")
        print("   Cannot test hospital-specific category loading")
else:
    print("❌ No active Level 1 (Domain) categories in database")
    print("\n💡 SOLUTION: Run: python manage.py load_shct_taxonomy")

print("\n" + "=" * 80)