"""
Django settings for healthchecks project.

For the full list of settings and their values, see
https://docs.djangoproject.com/en/4.2/ref/settings/
"""
from __future__ import annotations

import os
from collections.abc import Mapping
from pathlib import Path
from typing import Any

import django_stubs_ext

django_stubs_ext.monkeypatch()
BASE_DIR = Path(__file__).resolve().parent.parent


def envbool(s: str, default: str) -> bool:
    v = os.getenv(s, default=default)
    if v not in ("", "True", "False"):
        msg = "Unexpected value %s=%s, use 'True' or 'False'" % (s, v)
        raise Exception(msg)
    return v == "True"


def envint(s: str, default: str) -> int | None:
    v = os.getenv(s, default)
    if v == "None":
        return None

    return int(v)


SECRET_KEY = os.getenv("SECRET_KEY", "---")
METRICS_KEY = os.getenv("METRICS_KEY")
DEBUG = envbool("DEBUG", "True")
ALLOWED_HOSTS = os.getenv("ALLOWED_HOSTS", "*").split(",")
DEFAULT_FROM_EMAIL = os.getenv("DEFAULT_FROM_EMAIL", "healthchecks@example.org")
SUPPORT_EMAIL = os.getenv("SUPPORT_EMAIL")
USE_PAYMENTS = envbool("USE_PAYMENTS", "False")
REGISTRATION_OPEN = envbool("REGISTRATION_OPEN", "True")
if admins := os.getenv("ADMINS"):
    ADMINS = [(email, email) for email in admins.split(",")]

VERSION = ""

with (BASE_DIR / "CHANGELOG.md").open(encoding="utf-8") as f:
    for line in f.readlines():
        if line.startswith("## v"):
            VERSION = line.split()[1]
            break


INSTALLED_APPS = (
    "hc.accounts",
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.humanize",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "compressor",
    "hc.api",
    "hc.front",
    "hc.logs",
    "hc.payments",
)


MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "whitenoise.middleware.WhiteNoiseMiddleware",
    "django.contrib.sessions.middleware.SessionMiddleware",
    "django.middleware.common.CommonMiddleware",
    "django.middleware.csrf.CsrfViewMiddleware",
    "django.contrib.auth.middleware.AuthenticationMiddleware",
    "hc.accounts.middleware.CustomHeaderMiddleware",
    "django.contrib.messages.middleware.MessageMiddleware",
    "django.middleware.clickjacking.XFrameOptionsMiddleware",
    "hc.accounts.middleware.TeamAccessMiddleware",
]

if envbool("USE_GZIP_MIDDLEWARE", "False"):
    MIDDLEWARE.append("django.middleware.gzip.GZipMiddleware")

AUTHENTICATION_BACKENDS = [
    "hc.accounts.backends.EmailBackend",
    "hc.accounts.backends.ProfileBackend",
]

REMOTE_USER_HEADER = os.getenv("REMOTE_USER_HEADER")
if REMOTE_USER_HEADER:
    AUTHENTICATION_BACKENDS = ["hc.accounts.backends.CustomHeaderBackend"]

ROOT_URLCONF = "hc.urls"

TEMPLATES = [
    {
        "BACKEND": "django.template.backends.django.DjangoTemplates",
        "DIRS": [BASE_DIR / "templates"],
        "APP_DIRS": True,
        "OPTIONS": {
            "context_processors": [
                "django.template.context_processors.debug",
                "django.template.context_processors.request",
                "django.contrib.auth.context_processors.auth",
                "django.contrib.messages.context_processors.messages",
                "hc.front.context_processors.branding",
                "hc.payments.context_processors.payments",
            ]
        },
    }
]

# Extend Django logging to log unhandled exceptions
# and all logs from hc.* loggers to the database.
LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "handlers": {
        "db": {
            "level": "DEBUG",
            "class": "hc.logs.Handler",
        },
    },
    "loggers": {
        "django.request": {"level": "ERROR", "handlers": ["db"]},
        "hc": {"level": "DEBUG", "handlers": ["db"]},
    },
}

WSGI_APPLICATION = "hc.wsgi.application"
TEST_RUNNER = "hc.api.tests.CustomRunner"
DEFAULT_EXCEPTION_REPORTER_FILTER = "hc.debug.ExceptionReporterFilter"


# Default database engine is SQLite. So one can just check out code,
# install requirements.txt and do manage.py runserver and it works
DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
DATABASES: Mapping[str, Any] = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": os.getenv("DB_NAME", BASE_DIR / "hc.sqlite"),
    }
}

# You can switch database engine to postgres or mysql using environment
# variable 'DB'. Travis CI does this.
if os.getenv("DB") == "postgres":
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.postgresql",
            "HOST": os.getenv("DB_HOST", ""),
            "PORT": os.getenv("DB_PORT", ""),
            "NAME": os.getenv("DB_NAME", "hc"),
            "USER": os.getenv("DB_USER", "postgres"),
            "PASSWORD": os.getenv("DB_PASSWORD", ""),
            "CONN_MAX_AGE": envint("DB_CONN_MAX_AGE", "0"),
            "TEST": {"CHARSET": "UTF8"},
            "OPTIONS": {
                "sslmode": os.getenv("DB_SSLMODE", "prefer"),
                "target_session_attrs": os.getenv(
                    "DB_TARGET_SESSION_ATTRS", "read-write"
                ),
            },
        }
    }

if os.getenv("DB") == "mysql":
    DATABASES = {
        "default": {
            "ENGINE": "django.db.backends.mysql",
            "HOST": os.getenv("DB_HOST", ""),
            "PORT": os.getenv("DB_PORT", ""),
            "NAME": os.getenv("DB_NAME", "hc"),
            "USER": os.getenv("DB_USER", "root"),
            "PASSWORD": os.getenv("DB_PASSWORD", ""),
            "TEST": {"CHARSET": "UTF8"},
        }
    }

USE_TZ = True
TIME_ZONE = "UTC"
USE_I18N = False

SITE_ROOT = os.getenv("SITE_ROOT", "http://localhost:8000")
SITE_NAME = os.getenv("SITE_NAME", "Mychecks")
SITE_LOGO_URL = os.getenv("SITE_LOGO_URL")
MASTER_BADGE_LABEL = os.getenv("MASTER_BADGE_LABEL", SITE_NAME)
PING_ENDPOINT = os.getenv("PING_ENDPOINT", SITE_ROOT + "/ping/")
PING_EMAIL_DOMAIN = os.getenv("PING_EMAIL_DOMAIN", "localhost")
PING_BODY_LIMIT = envint("PING_BODY_LIMIT", "10000")
# If PING_BODY_LIMIT is higher than the default value for DATA_UPLOAD_MAX_MEMORY_SIZE,
# then we need to bump up DATA_UPLOAD_MAX_MEMORY_SIZE too:
if PING_BODY_LIMIT and PING_BODY_LIMIT > 2621440:
    DATA_UPLOAD_MAX_MEMORY_SIZE = PING_BODY_LIMIT
STATIC_URL = "/static/"
STATICFILES_DIRS = [BASE_DIR / "static"]
STATIC_ROOT = BASE_DIR / "static-collected"
STATICFILES_FINDERS = (
    "django.contrib.staticfiles.finders.FileSystemFinder",
    "django.contrib.staticfiles.finders.AppDirectoriesFinder",
    "compressor.finders.CompressorFinder",
)
COMPRESS_OFFLINE = True
COMPRESS_CSS_HASHING_METHOD = "content"
COMPRESS_STORAGE = "compressor.storage.GzipCompressorFileStorage"
# Use CssRelativeFilter instead of CssAbsoluteFilter to fix
# icon font loading when serving Healthchecks from a subdirectory
COMPRESS_FILTERS = {
    "css": [
        "compressor.filters.css_default.CssRelativeFilter",
        "compressor.filters.cssmin.rCSSMinFilter",
    ],
    "js": ["compressor.filters.jsmin.rJSMinFilter"],
}


def immutable_file_test(path: Any, url: str) -> bool:
    return "/static/CACHE/" in url or "/static/fonts/" in url


WHITENOISE_IMMUTABLE_FILE_TEST = immutable_file_test

# SMTP credentials for sending email
EMAIL_HOST = os.getenv("EMAIL_HOST", "")
EMAIL_PORT = envint("EMAIL_PORT", "587")
EMAIL_HOST_USER = os.getenv("EMAIL_HOST_USER", "")
EMAIL_HOST_PASSWORD = os.getenv("EMAIL_HOST_PASSWORD", "")
EMAIL_USE_TLS = envbool("EMAIL_USE_TLS", "True")
EMAIL_USE_SSL = envbool("EMAIL_USE_SSL", "False")
EMAIL_USE_VERIFICATION = envbool("EMAIL_USE_VERIFICATION", "True")
EMAIL_MAIL_FROM_TMPL = os.getenv("EMAIL_MAIL_FROM_TMPL", "")

# WebAuthn
RP_ID = os.getenv("RP_ID")

# Object storage credentials for storing large ping bodies.
# (Optional. If not specified, will store ping bodies in the database.)
S3_ACCESS_KEY = os.getenv("S3_ACCESS_KEY")
S3_SECRET_KEY = os.getenv("S3_SECRET_KEY")
S3_ENDPOINT = os.getenv("S3_ENDPOINT")
S3_REGION = os.getenv("S3_REGION")
S3_BUCKET = os.getenv("S3_BUCKET")
S3_TIMEOUT = envint("S3_TIMEOUT", "60")
S3_SECURE = envbool("S3_SECURE", "True")

# To enable statsd metric collection, set STATSD_HOST="host:hostport"
# (example: "localhost:8125")
STATSD_HOST = os.getenv("STATSD_HOST")

# Integrations

# Apprise
APPRISE_ENABLED = envbool("APPRISE_ENABLED", "False")

# Discord integration
DISCORD_CLIENT_ID = os.getenv("DISCORD_CLIENT_ID")
DISCORD_CLIENT_SECRET = os.getenv("DISCORD_CLIENT_SECRET")


# LINE Notify
LINENOTIFY_CLIENT_ID = os.getenv("LINENOTIFY_CLIENT_ID")
LINENOTIFY_CLIENT_SECRET = os.getenv("LINENOTIFY_CLIENT_SECRET")

# Matrix
MATRIX_HOMESERVER = os.getenv("MATRIX_HOMESERVER")
MATRIX_USER_ID = os.getenv("MATRIX_USER_ID")
MATRIX_ACCESS_TOKEN = os.getenv("MATRIX_ACCESS_TOKEN")

# Mattermost
MATTERMOST_ENABLED = envbool("MATTERMOST_ENABLED", "True")

# MS Teams
MSTEAMS_ENABLED = envbool("MSTEAMS_ENABLED", "True")

# Opsgenie
OPSGENIE_ENABLED = envbool("OPSGENIE_ENABLED", "True")

# PagerTree
PAGERTREE_ENABLED = envbool("PAGERTREE_ENABLED", "True")

# PagerDuty
PD_ENABLED = envbool("PD_ENABLED", "True")
PD_APP_ID = os.getenv("PD_APP_ID")

# Prometheus
PROMETHEUS_ENABLED = envbool("PROMETHEUS_ENABLED", "True")

# Pushover integration
PUSHOVER_API_TOKEN = os.getenv("PUSHOVER_API_TOKEN")
PUSHOVER_SUBSCRIPTION_URL = os.getenv("PUSHOVER_SUBSCRIPTION_URL")
PUSHOVER_EMERGENCY_RETRY_DELAY = int(os.getenv("PUSHOVER_EMERGENCY_RETRY_DELAY", "300"))
PUSHOVER_EMERGENCY_EXPIRATION = int(os.getenv("PUSHOVER_EMERGENCY_EXPIRATION", "86400"))

# Pushbullet integration
PUSHBULLET_CLIENT_ID = os.getenv("PUSHBULLET_CLIENT_ID")
PUSHBULLET_CLIENT_SECRET = os.getenv("PUSHBULLET_CLIENT_SECRET")

# Rocket.Chat
ROCKETCHAT_ENABLED = envbool("ROCKETCHAT_ENABLED", "True")

# Local shell commands
SHELL_ENABLED = envbool("SHELL_ENABLED", "False")

# Signal
SIGNAL_CLI_SOCKET = os.getenv("SIGNAL_CLI_SOCKET")

# Slack integration
SLACK_CLIENT_ID = os.getenv("SLACK_CLIENT_ID")
SLACK_CLIENT_SECRET = os.getenv("SLACK_CLIENT_SECRET")
SLACK_ENABLED = envbool("SLACK_ENABLED", "True")

# Spike.sh
SPIKE_ENABLED = envbool("SPIKE_ENABLED", "True")

# Telegram integration -- override in local_settings.py
TELEGRAM_BOT_NAME = os.getenv("TELEGRAM_BOT_NAME", "ExampleBot")
TELEGRAM_TOKEN = os.getenv("TELEGRAM_TOKEN")

# SMS and WhatsApp (Twilio) integration
TWILIO_ACCOUNT = os.getenv("TWILIO_ACCOUNT")
TWILIO_AUTH = os.getenv("TWILIO_AUTH")
TWILIO_FROM = os.getenv("TWILIO_FROM")
TWILIO_MESSAGING_SERVICE_SID = os.getenv("TWILIO_MESSAGING_SERVICE_SID")
TWILIO_USE_WHATSAPP = envbool("TWILIO_USE_WHATSAPP", "False")
WHATSAPP_DOWN_CONTENT_SID = os.getenv("WHATSAPP_DOWN_CONTENT_SID")
WHATSAPP_UP_CONTENT_SID = os.getenv("WHATSAPP_UP_CONTENT_SID")

# Trello
TRELLO_APP_KEY = os.getenv("TRELLO_APP_KEY")

# VictorOps
VICTOROPS_ENABLED = envbool("VICTOROPS_ENABLED", "True")

# Webhooks
WEBHOOKS_ENABLED = envbool("WEBHOOKS_ENABLED", "True")
INTEGRATIONS_ALLOW_PRIVATE_IPS = envbool("INTEGRATIONS_ALLOW_PRIVATE_IPS", "False")

# Zulip
ZULIP_ENABLED = envbool("ZULIP_ENABLED", "True")

# Read additional configuration from hc/local_settings.py if it exists
if (BASE_DIR / "hc/local_settings.py").exists():
    from .local_settings import *  # noqa: F403