#!/usr/bin/env python3
"""
Seed German Universities directly into the edu-search-service universities table.

This script imports the same university data as load_university_seeds.py
but writes directly to the PostgreSQL universities table used by the crawler.
"""

import psycopg2
import os
import sys

# Add the backend scripts path to import university data
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '../../backend/scripts'))
from load_university_seeds import (
    UNIVERSITAETEN, FACHHOCHSCHULEN, PAEDAGOGISCHE_HOCHSCHULEN,
    KUNSTHOCHSCHULEN, PRIVATE_HOCHSCHULEN
)

# Database connection from environment or defaults
DATABASE_URL = os.environ.get(
    'DATABASE_URL',
    'postgresql://breakpilot:breakpilot@localhost:5432/breakpilot_db'
)


def get_uni_type(original_type: str) -> str:
    """Map the type from seed data to database uni_type."""
    type_map = {
        'UNI': 'UNI',
        'FH': 'HAW',  # Fachhochschule -> HAW (Hochschule für Angewandte Wissenschaften)
        'PH': 'PH',   # Pädagogische Hochschule
        'KUNST': 'KUNST',
        'PRIVATE': 'PRIVATE',
    }
    return type_map.get(original_type, 'UNI')


def seed_universities():
    """Load all universities into the database."""
    # Collect all universities with their types
    all_unis = []

    for uni in UNIVERSITAETEN:
        all_unis.append({**uni, 'uni_type': 'UNI'})

    for uni in FACHHOCHSCHULEN:
        all_unis.append({**uni, 'uni_type': 'HAW'})

    for uni in PAEDAGOGISCHE_HOCHSCHULEN:
        all_unis.append({**uni, 'uni_type': 'PH'})

    for uni in KUNSTHOCHSCHULEN:
        all_unis.append({**uni, 'uni_type': 'KUNST'})

    for uni in PRIVATE_HOCHSCHULEN:
        all_unis.append({**uni, 'uni_type': 'PRIVATE'})

    print(f"Total universities to seed: {len(all_unis)}")
    print(f"  - Universitäten: {len(UNIVERSITAETEN)}")
    print(f"  - Fachhochschulen: {len(FACHHOCHSCHULEN)}")
    print(f"  - Pädagogische Hochschulen: {len(PAEDAGOGISCHE_HOCHSCHULEN)}")
    print(f"  - Kunst-/Musikhochschulen: {len(KUNSTHOCHSCHULEN)}")
    print(f"  - Private Hochschulen: {len(PRIVATE_HOCHSCHULEN)}")

    try:
        conn = psycopg2.connect(DATABASE_URL)
        cur = conn.cursor()

        inserted = 0
        skipped = 0
        errors = []

        for uni in all_unis:
            try:
                # Generate a short name from the full name
                name = uni['name']
                short_name = None

                # Try to extract common abbreviations
                if 'KIT' in name:
                    short_name = 'KIT'
                elif 'TUM' in name or name == 'Technische Universität München':
                    short_name = 'TUM'
                elif 'LMU' in name or 'Ludwig-Maximilians' in name:
                    short_name = 'LMU'
                elif 'RWTH' in name:
                    short_name = 'RWTH'
                elif 'FAU' in name or 'Friedrich-Alexander' in name:
                    short_name = 'FAU'
                elif name.startswith('Universität '):
                    short_name = 'Uni ' + name.replace('Universität ', '')[:15]
                elif name.startswith('Technische Universität '):
                    short_name = 'TU ' + name.replace('Technische Universität ', '')[:12]
                elif name.startswith('Hochschule '):
                    short_name = 'HS ' + name.replace('Hochschule ', '')[:15]

                cur.execute("""
                    INSERT INTO universities (name, short_name, url, state, uni_type)
                    VALUES (%s, %s, %s, %s, %s)
                    ON CONFLICT (url) DO NOTHING
                    RETURNING id
                """, (
                    uni['name'],
                    short_name,
                    uni['url'],
                    uni.get('state'),
                    uni['uni_type']
                ))

                result = cur.fetchone()
                if result:
                    inserted += 1
                else:
                    skipped += 1

            except Exception as e:
                errors.append(f"{uni['name']}: {str(e)}")

        conn.commit()
        cur.close()
        conn.close()

        print(f"\nResults:")
        print(f"  Inserted: {inserted}")
        print(f"  Skipped (duplicates): {skipped}")

        if errors:
            print(f"  Errors: {len(errors)}")
            for err in errors[:5]:
                print(f"    - {err}")

        print(f"\nDone! Total universities in database: {inserted + skipped}")
        return True

    except psycopg2.Error as e:
        print(f"Database error: {e}")
        return False


if __name__ == "__main__":
    print("=" * 60)
    print("Seeding Universities into edu-search-service database")
    print("=" * 60)

    success = seed_universities()
    sys.exit(0 if success else 1)