import json
import logging
import os


def env_true(value):
    return value.lower() in ('yes', 'y', '1', 'on', 'true', 't')


def env_false(value):
    return value.lower() in ('no', 'n', '0', 'off', 'false', 'f')

PROXMOX_READONLY = env_true(os.environ.get('PROXMOX_READONLY', '0'))
MIKROTIK_READONLY = env_true(os.environ.get('MIKROTIK_READONLY', '0'))

class ProxmoxConfig:
    HOST = os.environ.get('PROXMOX_HOST')
    USER = os.environ.get('PROXMOX_USER')
    PASS = os.environ.get('PROXMOX_PASS')
    NODE = os.environ.get('PROXMOX_NODE')
    READONLY = PROXMOX_READONLY
    MAX_MEM = int(os.environ.get('PROXMOX_MAX_MEM', 8192))
    MAX_DISK = int(os.environ.get('PROXMOX_MAX_DISK', 100))
    MAX_CORES = int(os.environ.get('PROXMOX_MAX_CORES', 8))
    CREATE_LXC_TIMEOUT = int(os.environ.get('PROXMOX_CREATE_LXC_TIMEOUT', 600))
    DEFAULT_STORAGE = os.environ.get('PROXMOX_DEFAULT_STORAGE', 'local')


class MikrotikConfig:
    HOST = os.environ.get('MIKROTIK_HOST')
    USER = os.environ.get('MIKROTIK_USER')
    PASS = os.environ.get('MIKROTIK_PASS')
    IP_8 = os.environ.get('MIKROTIK_IP_8', '192,172')
    READONLY = MIKROTIK_READONLY
    ROOT_NETWORKS = os.environ.get('MIKROTIK_ROOT_NETWORKS', '192.168.1.0,192.168.107.0').split(',')


class DatabaseConfig:
    HOST = os.environ.get('DATABASE_HOST', 'localhost') or 'localhost'
    ENGINE = os.environ.get('DATABASE_ENGINE', 'sqlite3') or 'sqlite3'
    USER = os.environ.get('DATABASE_USER', '') or ''
    PASSWORD = os.environ.get('DATABASE_PASSWORD', '') or ''
    NAME = os.environ.get('DATABASE_NAME', '')
    PORT = os.environ.get('DATABASE_PORT', 5432) or 5432


class AuthLDAPConfig:
    HOST = os.environ.get('AUTH_LDAP_HOST')
    BIND_DN = os.environ.get('AUTH_LDAP_BIND_DN')
    BIND_PASSWORD = os.environ.get('AUTH_LDAP_BIND_PASSWORD')
    USER_BASE = os.environ.get('AUTH_LDAP_USER_BASE')
    USER_FILTER = os.environ.get('AUTH_LDAP_USER_FILTER')
    GROUP_SEARCH_BASE = os.environ.get('AUTH_LDAP_GROUP_SEARCH_BASE')
    GROUP_SEARCH_FILTER = os.environ.get('AUTH_LDAP_GROUP_SEARCH_FILTER')
    USER_ATTR_MAP = json.loads(os.environ.get('AUTH_LDAP_USER_ATTR_MAP'))
    USER_FLAGS_BY_GROUP = json.loads(os.environ.get('AUTH_LDAP_USER_FLAGS_BY_GROUP'))
    FIND_GROUP_PERMS = os.environ.get('AUTH_LDAP_FIND_GROUP_PERMS')
    CACHE_GROUPS = os.environ.get('AUTH_LDAP_CACHE_GROUPS')
    GROUP_CACHE_TIMEOUT = os.environ.get('AUTH_LDAP_GROUP_CACHE_TIMEOUT')


_missing = []
for cfg in ['Proxmox', 'Mikrotik', 'Database', ('AuthLDAP', 'AUTH_LDAP')]:
    if isinstance(cfg, tuple):
        cfg, mapname = cfg
    else:
        mapname = cfg.upper()
    cls = globals()[cfg + 'Config']
    for k, v in cls.__dict__.items():
        if k.startswith(mapname + '_'):
            if v is None:
                _missing.append(f'{cfg}.{k}')
if _missing:
    raise Exception(f'Missing environment variables: \n{"\n".join(_missing)}\n')

logging.debug(f'ProxmoxConfig: {ProxmoxConfig.__dict__}')
logging.debug(f'MikrotikConfig: {MikrotikConfig.__dict__}')
logging.debug(f'DatabaseConfig: {DatabaseConfig.__dict__}')
logging.debug(f'AuthLDAPConfig: {AuthLDAPConfig.__dict__}')