#!/usr/bin/env bash

function env::on_load() {
  env::defaults
  env::load_globals
}

function env::artifact::path()     { path::relative_to_root "$(ctx::artifact::path env)"; }
function env::artifact::resolved() { path::relative_to_root "$(ctx::artifact::path env)/${ENVIRONMENT}.resolved.env"; }
function env::project::name()      { echo "${PROJECT_NAME}"; }

# ============================================
# Defaults
# ============================================

function env::defaults() {
  : "${PROJECT_NAME:=$(basename "$(ctx::root)")}"
  : "${APP_FRAMEWORK:=yii2-advanced}"
  : "${APP_PORT:=auto:8080}"
  : "${TLD:="lan"}"
  : "${DB_DRIVER:=db}"
  : "${DB_IMAGE:=mariadb:latest}"
  : "${DB_ENGINE:=mysql}"
  : "${DB_PORT:=auto}"
  : "${PROXY_SERVICE:=traefik}"
  : "${PROXY_NETWORK:=proxy}"

  # Environment
  : "${ENVIRONMENT:=dev}"
}

function env::defaults::derived() {
  APP_IMAGE="${APP_IMAGE:-${PROJECT_NAME}-app}"
  DB_NAME="${DB_NAME:-${PROJECT_NAME}}"
  DB_HOST="${DB_HOST:-${PROJECT_NAME}-${DB_DRIVER}}"
  DOMAIN="${DOMAIN:-${PROJECT_NAME}.${TLD}}"
  BACKEND_DOMAIN="${BACKEND_DOMAIN:-admin.${DOMAIN}}"
}

# ============================================

function env::load_globals() {
  load_file required "$(ctx::env)/globals.env";
  env::defaults::derived
}

function env::load_environment() {
  load_file optional "$(ctx::artifact::path env)/${ENVIRONMENT}.env"
  env::defaults::derived
}

function env::load_environment_resolved() {
  load_file optional "$(env::artifact::resolved)"
}

function env::load_env_files() {
  set -a

  env::load_globals || { set +a; exit 1; }
  env::load_environment
  env::load_environment_resolved

  set +a
}

function env::set_env_var() {
  local key="$1"
  local value="$2"
  local file="${3:-$(ctx::artifact::path env)/${ENVIRONMENT}.env}"

  touch "$file"

  if grep -q "^${key}=" "$file"; then
    fs::sed_inplace "s/^${key}=.*/${key}=${value}/" "$file"
  else
    printf "\n%s=%s" "$key" "$value" >> "$file"
  fi
}

# ============================================
# Derived
# ============================================

function env::derive() {
  APP_IMAGE="${PROJECT_NAME}-app"
  DOMAIN="${PROJECT_NAME}.${TLD}"
  BACKEND_DOMAIN="admin-${PROJECT_NAME}.${TLD}"
  DB_HOST="${PROJECT_NAME}-db"
  DB_NAME="${PROJECT_NAME}"

  export APP_IMAGE DOMAIN BACKEND_DOMAIN DB_HOST DB_NAME
}