#!/bin/sh
# =============================================================================
# prestart.sh — Container entrypoint for CRM API container
#
# Responsibilities:
#   1. Run Alembic DB migrations (alembic upgrade head) using the owner user.
#   2. Set the crm_runtime password (for RLS-enforced app access).
#   3. Start uvicorn as PID 1 (so signals like SIGTERM are forwarded correctly).
#
# Notes:
#   - `set -e` ensures the container crashes loudly if migrations fail.
#   - The ARQ worker runs in a separate container (see worker.sh / docker-compose).
#   - Migrations use MIGRATION_DATABASE_URL (crm_user, owner, can bypass RLS).
#   - The app uses DATABASE_URL (crm_runtime, NOSUPERUSER, NOBYPASSRLS).
# =============================================================================

set -e

# Use MIGRATION_DATABASE_URL for alembic (falls back to DATABASE_URL for backwards compat)
export ALEMBIC_DATABASE_URL="${MIGRATION_DATABASE_URL:-$DATABASE_URL}"

# Configure alembic to use the migration database URL
export ALEMBIC_DATABASE_URL

echo "[prestart] $(date -u +%Y-%m-%dT%H:%M:%SZ) - Running alembic upgrade head (owner user)..."
# Temporarily override DATABASE_URL for alembic
DATABASE_URL="$ALEMBIC_DATABASE_URL" alembic upgrade head
echo "[prestart] DB migrations completed successfully."

# Set passwords for all application DB roles (crm_api, crm_auth, crm_worker, crm_migration)
# Migration 0070 creates these roles without passwords; we set them here so the
# API/Worker/Auth connections can authenticate.
echo "[prestart] Setting DB role passwords..."
cat > /tmp/set_role_passwords.py << 'PYEOF'
import asyncio
import os
import re
from sqlalchemy.ext.asyncio import create_async_engine
from sqlalchemy import text

async def set_passwords():
    db_url = os.environ.get('MIGRATION_DATABASE_URL', os.environ.get('DATABASE_URL', ''))
    if not db_url:
        print('[prestart] WARNING: No DB URL for password setup')
        return
    match = re.search(r'://([^:]+):([^@]+)@', db_url)
    if not match:
        print('[prestart] WARNING: Could not extract password from DB URL')
        return
    pwd = match.group(2)
    engine = create_async_engine(db_url)
    roles = ['crm_api', 'crm_auth', 'crm_worker', 'crm_migration']
    try:
        async with engine.begin() as conn:
            for role in roles:
                try:
                    await conn.execute(text(f"ALTER ROLE {role} WITH LOGIN PASSWORD '{pwd}'"))
                    print(f'[prestart] Password set for {role}')
                except Exception as e:
                    print(f'[prestart] WARNING: Could not set password for {role}: {e}')
        print('[prestart] DB role passwords set.')
    except Exception as e:
        print(f'[prestart] WARNING: Could not set DB role passwords: {e}')
    finally:
        await engine.dispose()

asyncio.run(set_passwords())
PYEOF
python3 /tmp/set_role_passwords.py
rm -f /tmp/set_role_passwords.py

# Set crm_runtime password if RUNTIME_DB_PASSWORD is set (legacy support)
if [ -n "$RUNTIME_DB_PASSWORD" ]; then
    echo "[prestart] Setting crm_runtime password..."
    python3 -c "
import asyncio
import os
from sqlalchemy.ext.asyncio import create_async_engine
from sqlalchemy import text

async def set_password():
    db_url = os.environ.get('MIGRATION_DATABASE_URL', os.environ.get('DATABASE_URL', ''))
    if not db_url:
        print('[prestart] WARNING: No DB URL for password setup')
        return
    engine = create_async_engine(db_url)
    pwd = os.environ.get('RUNTIME_DB_PASSWORD', '')
    try:
        async with engine.begin() as conn:
            await conn.execute(text(
                "ALTER ROLE crm_runtime WITH LOGIN PASSWORD :pwd NOSUPERUSER NOBYPASSRLS"
            ), {"pwd": pwd})
        print('[prestart] crm_runtime password set.')
    except Exception as e:
        print(f'[prestart] WARNING: Could not set crm_runtime password: {e}')
    finally:
        await engine.dispose()

asyncio.run(set_password())
"
fi

echo "[prestart] Starting uvicorn on 0.0.0.0:8000 (workers=1)..."
exec uvicorn app.main:app \
    --host 0.0.0.0 \
    --port 8000 \
    --workers 1