package config

import (
	"os"
	"strings"
)

// Config holds all application configuration
type Config struct {
	Debug          bool
	Hostname       string
	Port           string
	LogLevel       string
	SecretKey      string
	DatabasePath   string
	SlackConfig    SlackConfig
	TelegramConfig TelegramConfig
}

// SlackConfig holds Slack platform configuration
type SlackConfig struct {
	Token               string
	BotOAuthAccessToken string
}

// TelegramConfig holds Telegram platform configuration
type TelegramConfig struct {
	Token string
}

// Load loads configuration from environment variables
func Load() (*Config, error) {
	config := &Config{
		Debug:        getEnv("DEBUG", "n") == "y",
		Hostname:     getEnv("BUTTERROBOT_HOSTNAME", "butterrobot-dev.int.fmartingr.network"),
		Port:         getEnv("PORT", "8080"),
		LogLevel:     getEnv("LOG_LEVEL", "ERROR"),
		SecretKey:    getEnv("SECRET_KEY", "1234"),
		DatabasePath: getEnv("DATABASE_PATH", "butterrobot.db"),
		SlackConfig: SlackConfig{
			Token:               getEnv("SLACK_TOKEN", ""),
			BotOAuthAccessToken: getEnv("SLACK_BOT_OAUTH_ACCESS_TOKEN", ""),
		},
		TelegramConfig: TelegramConfig{
			Token: getEnv("TELEGRAM_TOKEN", ""),
		},
	}

	return config, nil
}

// getEnv retrieves an environment variable value or returns a default value
func getEnv(key, defaultValue string) string {
	value := os.Getenv(key)
	if strings.TrimSpace(value) == "" {
		return defaultValue
	}
	return value
}