"""Migration: Create indexes on date columns used by the 18:00 daily reminder.

Run this script to add indexes on the date columns that the Discord bot's
daily reminder queries (Match.date, TeamMatch.date, Tryout.date,
OneOnOneRequest.date). The app uses create_all() for new tables, but existing
production databases need these added explicitly.

Usage: python migrations/add_reminder_date_indexes.py
"""

import sys
import os
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from app.app import create_app
from app.extensions import db
from sqlalchemy import text

app = create_app()

with app.app_context():
    indexes = [
        ('ix_matches_date', 'matches', 'date'),
        ('ix_team_matches_date', 'team_matches', 'date'),
        ('ix_tryouts_date', 'tryouts', 'date'),
        ('ix_one_on_one_requests_date', 'one_on_one_requests', 'date'),
    ]

    for index_name, table, column in indexes:
        db.session.execute(text(
            f'CREATE INDEX IF NOT EXISTS {index_name} ON {table} ({column})'
        ))
        print(f'Index {index_name} on {table}({column}) ensured.')

    db.session.commit()
    print('Migration complete.')