// Package config provides global configuration management for the application.
// This is a simplified implementation suitable for the experimental phase.
package config

import (
	"os"

	"github.com/joho/godotenv"
)

var (
	// Endpoint is the OpenSearch cluster endpoint URL.
	Endpoint string

	// Region is the AWS region where the OpenSearch cluster is located.
	Region string

	// AccessKey is the AWS access key ID for authentication.
	AccessKey string

	// SecretKey is the AWS secret access key for authentication.
	SecretKey string
)

// Load loads configuration from a .env file and then from environment variables.
// If the file does not exist, it only loads from environment variables without error.
func Load(filePath string) error {
	// Load .env file if it exists
	// This will set environment variables from the file
	_ = godotenv.Load(filePath)

	// Initialize global config from environment variables
	Endpoint = os.Getenv("ES_ENDPOINT")
	AccessKey = os.Getenv("AWS_ACCESS_KEY_ID")
	SecretKey = os.Getenv("AWS_SECRET_ACCESS_KEY")
	Region = os.Getenv("AWS_REGION")

	return nil
}

// Init initializes the global configuration from environment variables.
func Init() {
	Endpoint = os.Getenv("ES_ENDPOINT")
	AccessKey = os.Getenv("AWS_ACCESS_KEY_ID")
	SecretKey = os.Getenv("AWS_SECRET_ACCESS_KEY")
	Region = os.Getenv("AWS_REGION")
}