import os
import yaml
from enum import Enum

from utils import hmac_sha256_digest


class OrderStatus(Enum):
    pending = 0
    paid = 1
    transmitting = 2
    sent = 3
    received = 4
    cancelled = 5
    expired = 6


class InvoiceStatus(Enum):
    pending = 0
    paid = 1
    expired = 2


class Regions(Enum):
    g18 = 0
    e113 = 1
    t11n_afr = 2
    t11n_eu = 3
    t18v_c = 4
    t18v_ku = 5


# NOTE: an id field equals to "region.value + 1" is required for
# backward compatibility with the previous Ruby-based implementation.
SATELLITE_REGIONS = {
    Regions.g18: {
        'id': Regions.g18.value + 1,
        'satellite_name': 'Galaxy 18',
        'coverage': 'North America',
        'has_receiver': True
    },
    Regions.e113: {
        'id': Regions.e113.value + 1,
        'satellite_name': 'Eutelsat 113',
        'coverage': 'South America',
        'has_receiver': True
    },
    Regions.t11n_afr: {
        'id': Regions.t11n_afr.value + 1,
        'satellite_name': 'Telstar 11N',
        'coverage': 'Africa',
        'has_receiver': False
    },
    Regions.t11n_eu: {
        'id': Regions.t11n_eu.value + 1,
        'satellite_name': 'Telstar 11N',
        'coverage': 'Europe',
        'has_receiver': False
    },
    Regions.t18v_c: {
        'id': Regions.t18v_c.value + 1,
        'satellite_name': 'Telstar 18V C',
        'coverage': 'Asia Pacific',
        'has_receiver': True
    },
    Regions.t18v_ku: {
        'id': Regions.t18v_ku.value + 1,
        'satellite_name': 'Telstar 18V Ku',
        'coverage': 'Asia Pacific',
        'has_receiver': True
    },
}

db_yaml_path = os.path.join("config", 'database.yml')
with open(db_yaml_path, 'r') as fd:
    db_conf = yaml.safe_load(fd)

env = os.getenv('ENV', 'development')

EXPIRE_PENDING_ORDERS_AFTER_DAYS = 1
MESSAGE_FILE_RETENTION_TIME_DAYS = 31

SERVER_PORT = 9292
CALLBACK_URI_ROOT = os.getenv('CALLBACK_URI_ROOT',
                              "http://localhost:{}".format(SERVER_PORT))
CHARGE_API_TOKEN = os.getenv('CHARGE_API_TOKEN', 'mySecretToken')
LIGHTNING_WEBHOOK_KEY = hmac_sha256_digest('charged-token', CHARGE_API_TOKEN)

CHARGE_ROOT = os.getenv('CHARGE_ROOT',
                        f'http://api-token:{CHARGE_API_TOKEN}@localhost:9112')
CONNECTION_TIMEOUT = 2
DB_FILE = db_conf[env]['database']
DB_ROOT = os.path.dirname(DB_FILE)
LN_INVOICE_EXPIRY = 60 * 60  # one hour
LN_INVOICE_DESCRIPTION = 'Blockstream Satellite Transmission' if os.getenv(
    'ENV') == 'production' else 'BSS Test'

MAX_MESSAGE_SIZE = 2**20
MAX_TEXT_MSG_LEN = 1024  # valid for message (not file)

MIN_BID = int(os.getenv('MIN_BID', 1000))
MIN_MESSAGE_SIZE = 1
MIN_PER_BYTE_BID = float(os.getenv('MIN_PER_BYTE_BID', 1))
MSG_STORE_PATH = os.path.join(DB_ROOT, 'messages')
PAGE_SIZE = 20
MAX_PAGE_SIZE = 100
RESPONSE_TIMEOUT = 2

FORCE_PAYMENT = os.getenv('FORCE_PAYMENT', False)

DEFAULT_TX_RATE = 1000  # bytes per second
TRANSMIT_RATE = int(os.getenv('TRANSMIT_RATE',
                              DEFAULT_TX_RATE))  # bytes per second

LOGGING_FORMAT = '%(asctime)s %(levelname)s %(name)s : %(message)s'
REDIS_URI = os.getenv('REDIS_URI', 'redis://127.0.0.1:6379')

SUB_CHANNELS = ['transmissions']