"""Application configuration."""

import logging
import os

from dotenv import load_dotenv
from sqlalchemy.pool import NullPool
from sqlalchemy.pool import StaticPool

# Load environment variables from a .env file
dotenv_path = os.path.abspath(
    os.path.join(os.path.dirname(__file__), os.path.pardir, '.env'))
load_dotenv(dotenv_path)

# Service information
SERVICE_NAME = 'ows-lyrics'
SERVICE_VERSION = '0.0.1'

# Production environment
PROD_ENVIRONMENT = 'prod'
DEV_ENVIRONMENT = 'dev'
QA_ENVIRONMENT = 'qa'
TEST_ENVIRONMENT = 'test'
ENVIRONMENT = os.environ.get('Environment', DEV_ENVIRONMENT)

# Errors and loggers
SENTRY = os.environ.get('SENTRY_DSN') or None
LOGGER_LEVEL = logging.INFO
LOGGER_NAME = 'ows1'

# Generic handlers
HEALTH_CHECK = '/hello/'

# Swagger documentation path
SWAGGER_FILE_PATH = 'spec/ows_lyrics-1.0.0.yaml'

# Database credentials
DB_CREDENTIALS = {
    'database': os.environ.get('AR_MYSQL_DATABASE'),
    'host': os.environ.get('AR_MYSQL_HOST'),
    'password': os.environ.get('AR_MYSQL_PASSWORD'),
    'port': os.environ.get('AR_MYSQL_PORT'),
    'user': os.environ.get('AR_MYSQL_USER')
}

# Database config
if ENVIRONMENT == TEST_ENVIRONMENT:
    DB_URL = 'sqlite://'
    POOL_CLASS = StaticPool
    CONNECT_ARGS = {'check_same_thread': False}
else:  # pragma: no cover
    # We must explicitly set utf8 encoding for MySQL connections
    DB_URL = (
        'mysql+pymysql://{user}:{password}@{host}/{db}?charset={charset}'
        .format(
            user=DB_CREDENTIALS.get('user'),
            password=DB_CREDENTIALS.get('password'),
            host=DB_CREDENTIALS.get('host'),
            db=DB_CREDENTIALS.get('database'),
            charset='utf8mb4'))
    POOL_CLASS = NullPool
    CONNECT_ARGS = {}