#!/usr/bin/env bash
set -euo pipefail

rand_hex() {
  openssl rand -hex "$1"
}

prompt_default() {
  local name="$1" default="$2" val
  read -rp "Enter $name [$default]: " val
  printf -v "$name" '%s' "${val:-$default}"
}

prompt_autogen() {
  local name="$1" bytes="$2" val
  read -rp "Enter $name (leave blank to auto-generate): " val
  if [[ -z "$val" ]]; then
    printf -v "$name" '%s' "$(rand_hex "$bytes")"
  else
    printf -v "$name" '%s' "$val"
  fi
}

prompt_default        EVIBES_PROJECT_NAME        "eVibes"
prompt_default        EVIBES_FRONTEND_DOMAIN     "evibes.com"
prompt_default        EVIBES_BASE_DOMAIN         "evibes.com"
prompt_default        SENTRY_DSN                 ""
prompt_default        DEBUG                      "1"

prompt_autogen        SECRET_KEY                 32
prompt_autogen        JWT_SIGNING_KEY            64

prompt_default        ALLOWED_HOSTS              "evibes.com api.evibes.com b2b.evibes.com"
prompt_default        CSRF_TRUSTED_ORIGINS       "https://evibes.com https://api.evibes.com https://www.evibes.com https://b2b.evibes.com"
prompt_default        CORS_ALLOWED_ORIGINS       "$CSRF_TRUSTED_ORIGINS"

prompt_default        POSTGRES_DB                "evibes"
prompt_default        POSTGRES_USER              "evibes_user"
prompt_autogen        POSTGRES_PASSWORD          16

prompt_default        DBBACKUP_SFTP_HOST         "Your SFTP backup host"
prompt_default        DBBACKUP_SFTP_USER         "The username to use to log in to that host"
prompt_default        DBBACKUP_SFTP_PASS         "The password to use to log in to that host"

prompt_autogen        ELASTIC_PASSWORD           16
prompt_autogen        REDIS_PASSWORD             16

prompt_default        PROMETHEUS_USER            "evibes"
prompt_autogen        PROMETHEUS_PASSWORD        16

prompt_default        EMAIL_BACKEND              "django.core.mail.backends.smtp.EmailBackend"
prompt_default        EMAIL_HOST                 "smtp.whatever.evibes.com"
prompt_default        EMAIL_PORT                 "465"
prompt_default        EMAIL_USE_TLS              "0"
prompt_default        EMAIL_USE_SSL              "1"
prompt_default        EMAIL_HOST_USER            "your-email-user@whatever.evibes.com"
prompt_default        EMAIL_FROM                 "$EMAIL_HOST_USER"
prompt_default        EMAIL_HOST_PASSWORD        "SUPERSECRETEMAILHOSTPASSWORD"

prompt_default        COMPANY_NAME               "eVibes, Inc."
prompt_default        COMPANY_PHONE_NUMBER       "+888888888888"
prompt_default        COMPANY_ADDRESS            "The place that does not exist"

prompt_default        OPENAI_API_KEY             "Haha, really?"
prompt_default        ABSTRACT_API_KEY           "Haha, really? x2"
prompt_default        DEEPL_AUTH_KEY             "Haha, really? x3"

if [[ -f .env ]]; then
  read -rp ".env already exists and will be overwritten. Press ENTER to continue or Ctrl+C to abort. "
fi

cat > .env <<EOF
EVIBES_PROJECT_NAME="${EVIBES_PROJECT_NAME}"
EVIBES_FRONTEND_DOMAIN="${EVIBES_FRONTEND_DOMAIN}"
EVIBES_BASE_DOMAIN="${EVIBES_BASE_DOMAIN}"
SENTRY_DSN="${SENTRY_DSN}"
DEBUG=${DEBUG}

SECRET_KEY="${SECRET_KEY}"
JWT_SIGNING_KEY="${JWT_SIGNING_KEY}"

ALLOWED_HOSTS="${ALLOWED_HOSTS}"
CSRF_TRUSTED_ORIGINS="${CSRF_TRUSTED_ORIGINS}"
CORS_ALLOWED_ORIGINS="${CORS_ALLOWED_ORIGINS}"

POSTGRES_DB="${POSTGRES_DB}"
POSTGRES_USER="${POSTGRES_USER}"
POSTGRES_PASSWORD="${POSTGRES_PASSWORD}"

DBBACKUP_SFTP_HOST="${DBBACKUP_SFTP_HOST}"
DBBACKUP_SFTP_USER="${DBBACKUP_SFTP_USER}"
DBBACKUP_SFTP_PASS="${DBBACKUP_SFTP_PASS}"

ELASTIC_PASSWORD="${ELASTIC_PASSWORD}"

REDIS_PASSWORD="${REDIS_PASSWORD}"

CELERY_BROKER_URL="redis://:${REDIS_PASSWORD}@redis:6379/0"
CELERY_RESULT_BACKEND="redis://:${REDIS_PASSWORD}@redis:6379/0"

PROMETHEUS_USER="${PROMETHEUS_USER}"
PROMETHEUS_PASSWORD="${PROMETHEUS_PASSWORD}"

EMAIL_BACKEND="${EMAIL_BACKEND}"
EMAIL_HOST="${EMAIL_HOST}"
EMAIL_PORT="${EMAIL_PORT}"
EMAIL_USE_TLS=${EMAIL_USE_TLS}
EMAIL_USE_SSL=${EMAIL_USE_SSL}
EMAIL_HOST_USER="${EMAIL_HOST_USER}"
EMAIL_HOST_PASSWORD="${EMAIL_HOST_PASSWORD}"
EMAIL_FROM="${EMAIL_FROM}"

COMPANY_NAME="${COMPANY_NAME}"
COMPANY_PHONE_NUMBER="${COMPANY_PHONE_NUMBER}"
COMPANY_ADDRESS="${COMPANY_ADDRESS}"

OPENAI_API_KEY="${OPENAI_API_KEY}"
ABSTRACT_API_KEY="${ABSTRACT_API_KEY}"
DEEPL_AUTH_KEY="${DEEPL_AUTH_KEY}"
EOF

echo ".env file generated with fresh values."