from typing import TypedDict
from pathlib import Path
import os

from quart_common.web.env import env_bool, env_int
from server.Server import Server

class RunConfig(TypedDict):
  host: str
  port: int
  debug: bool

def build_server_from_env(default_snake_type:str) -> Server:
  data_path = str(Path(__file__).resolve().parent.parent)
  redis_url = os.environ.get('REDIS_URL', 'redis://localhost:6379/0')

  metrics_backend = os.environ.get('METRICS_BACKEND', None)
  if metrics_backend is None:
    metrics_backend = os.environ.get('BACKEND', 'memory')

  metrics_redis_url = os.environ.get('METRICS_REDIS_URL', redis_url)
  metrics_ttl_sec_raw = os.environ.get('METRICS_TTL_SEC', None)
  metrics_ttl_sec = env_int('METRICS_TTL_SEC', 900) if metrics_ttl_sec_raw is not None else None

  gameplay_db_enabled = env_bool('GAMEPLAY_DB_ENABLED', True)
  gameplay_db_backend = os.environ.get('GAMEPLAY_DB_BACKEND', 'sqlite')
  gameplay_db_path = os.environ.get(
    'GAMEPLAY_DB_PATH',
    os.path.join(data_path, 'data', 'database', 'gameplay.sqlite3'),
  )
  gameplay_db_busy_timeout_ms = env_int('GAMEPLAY_DB_BUSY_TIMEOUT_MS', 5000)
  gameplay_db_pg_dsn = os.environ.get('GAMEPLAY_DB_PG_DSN', None)

  server = Server(
    data_path=data_path,
    snake_type=os.environ.get('SNAKE', default_snake_type),
    storage_type=os.environ.get('STORAGE', 'LocalStorage'),
    debug=env_bool('DEBUG_SERVER'),
    check_tls_security=False,
    metrics_backend=metrics_backend,
    metrics_redis_url=metrics_redis_url,
    metrics_ttl_sec=metrics_ttl_sec,
    gameplay_db_enabled=gameplay_db_enabled,
    gameplay_db_backend=gameplay_db_backend,
    gameplay_db_path=gameplay_db_path,
    gameplay_db_busy_timeout_ms=gameplay_db_busy_timeout_ms,
    gameplay_db_pg_dsn=gameplay_db_pg_dsn,
  )

  if env_bool('STORE_GAME_HISTORY'):
    server.enable_store_game_state()

  return server

def build_run_config() -> RunConfig:
  return {
    'host': os.environ.get('HOST', '0.0.0.0'),
    'port': env_int('PORT', 8000),
    'debug': env_bool('DEBUG'),
  }