import json
from os import getenv

import newrelic.agent
from notifications_utils import DAILY_MESSAGE_LIMIT

from app.cloudfoundry_config import cloud_config


class Config(object):
    NOTIFY_APP_NAME = "admin"
    NOTIFY_ENVIRONMENT = getenv("NOTIFY_ENVIRONMENT", "development")
    API_HOST_NAME = getenv("API_HOST_NAME", "localhost")
    ADMIN_BASE_URL = getenv("ADMIN_BASE_URL", "http://localhost:6012")
    HEADER_COLOUR = (
        "#81878b"  # mix(govuk-colour("dark-grey"), govuk-colour("mid-grey"))
    )
    LOGO_CDN_DOMAIN = (
        "static-logos.notifications.service.gov.uk"  # TODO use our own CDN
    )
    ASSETS_DEBUG = False

    # Credentials
    ADMIN_CLIENT_SECRET = getenv("ADMIN_CLIENT_SECRET")
    ADMIN_CLIENT_USER_NAME = getenv("ADMIN_CLIENT_USERNAME")
    SECRET_KEY = getenv("SECRET_KEY")
    DANGEROUS_SALT = getenv("DANGEROUS_SALT")
    # ZENDESK_API_KEY = getenv('ZENDESK_API_KEY')
    ROUTE_SECRET_KEY_1 = getenv("ROUTE_SECRET_KEY_1", "dev-route-secret-key-1")
    ROUTE_SECRET_KEY_2 = getenv("ROUTE_SECRET_KEY_2", "dev-route-secret-key-2")

    NR_ACCOUNT_ID = getenv("NR_ACCOUNT_ID")
    NR_TRUST_KEY = getenv("NR_TRUST_KEY")
    NR_AGENT_ID = getenv("NR_AGENT_ID")
    NR_APP_ID = getenv("NR_APP_ID")
    NR_BROWSER_KEY = getenv("NR_BROWSER_KEY")
    settings = newrelic.agent.global_settings()
    NR_MONITOR_ON = settings and settings.monitor_mode

    TEMPLATE_PREVIEW_API_HOST = getenv(
        "TEMPLATE_PREVIEW_API_HOST", "http://localhost:9999"
    )
    TEMPLATE_PREVIEW_API_KEY = getenv("TEMPLATE_PREVIEW_API_KEY", "my-secret-key")

    GOVERNMENT_EMAIL_DOMAIN_NAMES = ["gov"]

    # Logging
    NOTIFY_LOG_LEVEL = getenv("NOTIFY_LOG_LEVEL", "INFO")

    DEFAULT_SERVICE_LIMIT = 50

    GLOBAL_SERVICE_MESSAGE_LIMIT = DAILY_MESSAGE_LIMIT

    EMAIL_EXPIRY_SECONDS = 3600  # 1 hour
    INVITATION_EXPIRY_SECONDS = 3600 * 24 * 2  # 2 days - also set on api
    EMAIL_2FA_EXPIRY_SECONDS = 1800  # 30 Minutes
    PERMANENT_SESSION_LIFETIME = 20 * 60 * 60  # 20 hours
    SEND_FILE_MAX_AGE_DEFAULT = 365 * 24 * 60 * 60  # 1 year
    REPLY_TO_EMAIL_ADDRESS_VALIDATION_TIMEOUT = 45
    ACTIVITY_STATS_LIMIT_DAYS = 7
    SESSION_COOKIE_HTTPONLY = True
    SESSION_COOKIE_NAME = "notify_admin_session"
    SESSION_COOKIE_SECURE = True
    # don't send back the cookie if it hasn't been modified by the request. this means that the expiry time won't be
    # updated unless the session is changed - but it's generally refreshed by `save_service_or_org_after_request`
    # every time anyway, except for specific endpoints (png/pdfs generally) where we've disabled that handler.
    SESSION_REFRESH_EACH_REQUEST = False
    WTF_CSRF_ENABLED = True
    WTF_CSRF_TIME_LIMIT = None
    CHECK_PROXY_HEADER = False

    REDIS_URL = cloud_config.redis_url
    REDIS_ENABLED = getenv("REDIS_ENABLED", "1") == "1"

    # TODO: reassign this
    NOTIFY_SERVICE_ID = "d6aa2c68-a2d9-4437-ab19-3ae8eb202553"

    NOTIFY_BILLING_DETAILS = json.loads(getenv("NOTIFY_BILLING_DETAILS") or "null") or {
        "account_number": "98765432",
        "sort_code": "01-23-45",
        "IBAN": "GB33BUKB20201555555555",
        "swift": "ABCDEF12",
        "notify_billing_email_addresses": [
            "generic@digital.cabinet-office.gov.uk",
            "first.last@digital.cabinet-office.gov.uk",
        ],
    }


def _s3_credentials_from_env(bucket_prefix):
    return {
        "bucket": getenv(
            f"{bucket_prefix}_BUCKET_NAME", f"{bucket_prefix}-test-bucket-name"
        ),
        "access_key_id": getenv(f"{bucket_prefix}_AWS_ACCESS_KEY_ID"),
        "secret_access_key": getenv(f"{bucket_prefix}_AWS_SECRET_ACCESS_KEY"),
        "region": getenv(f"{bucket_prefix}_AWS_REGION"),
    }


class Development(Config):
    DEBUG = True
    SESSION_COOKIE_SECURE = False
    SESSION_PROTECTION = None
    HTTP_PROTOCOL = "http"
    ASSET_DOMAIN = ""
    ASSET_PATH = "/static/"
    NOTIFY_LOG_LEVEL = "DEBUG"

    # Buckets
    CSV_UPLOAD_BUCKET = _s3_credentials_from_env("CSV")
    LOGO_UPLOAD_BUCKET = _s3_credentials_from_env("LOGO")

    # credential overrides
    DANGEROUS_SALT = "development-notify-salt"
    SECRET_KEY = "dev-notify-secret-key"  # nosec B105 - only used in development
    # ADMIN_CLIENT_USER_NAME is called ADMIN_CLIENT_ID in api repo, they should match
    ADMIN_CLIENT_USER_NAME = "notify-admin"
    ADMIN_CLIENT_SECRET = (
        "dev-notify-secret-key"  # nosec B105 - only used in development
    )


class Test(Development):
    TESTING = True
    WTF_CSRF_ENABLED = False
    ASSET_DOMAIN = "static.example.com"
    ASSET_PATH = "https://static.example.com/"

    API_HOST_NAME = "http://you-forgot-to-mock-an-api-call-to"
    REDIS_URL = "redis://you-forgot-to-mock-a-redis-call-to"
    LOGO_CDN_DOMAIN = "static-logos.test.com"


class Production(Config):
    HEADER_COLOUR = "#005EA5"  # $govuk-blue
    HTTP_PROTOCOL = "https"
    ASSET_DOMAIN = ""  # TODO use a CDN
    ASSET_PATH = "/static/"  # TODO use a CDN
    DEBUG = False

    # buckets
    CSV_UPLOAD_BUCKET = cloud_config.s3_credentials(
        f"notify-api-csv-upload-bucket-{getenv('NOTIFY_ENVIRONMENT')}"
    )
    LOGO_UPLOAD_BUCKET = cloud_config.s3_credentials(
        f"notify-admin-logo-upload-bucket-{getenv('NOTIFY_ENVIRONMENT')}"
    )


class Staging(Production):
    HEADER_COLOUR = "#00ff00"  # $green


class Demo(Staging):
    HEADER_COLOUR = "#6F72AF"  # $mauve


class Sandbox(Staging):
    HEADER_COLOUR = "#ff0000"  # $red


class Scanning(Production):
    HTTP_PROTOCOL = "http"
    API_HOST_NAME = "https://notify-api-staging.app.cloud.gov/"
    SECRET_KEY = "dev-notify-secret-key"  # nosec B105 - only used in development
    ADMIN_CLIENT_USER_NAME = "notify-admin"
    ADMIN_CLIENT_SECRET = (
        "dev-notify-secret-key"  # nosec B105 - only used in development
    )


configs = {
    "development": Development,
    "test": Test,
    "scanning": Scanning,
    "staging": Staging,
    "demo": Demo,
    "sandbox": Sandbox,
    "production": Production,
}