// Path: Backend/internal/config/config.go

package config

import (
	"os"
	"strings"
)

type Config struct {
	Port           string
	Environment    string
	AllowedOrigins string
	DatabaseURL    string
	JWTSecret      string
	SessionCookie  string
	AIReviewEndpoint string
	AIReviewAPIKey   string
	AIReviewModel    string
}

func Load() *Config {
	return &Config{
		Port:           getEnv("BACKEND_INTERNAL_PORT", "8081"),
		Environment:    getEnv("GO_ENV", "development"),
		AllowedOrigins: getEnv("ALLOWED_ORIGINS", "http://localhost:3000,http://localhost:4321,http://localhost:8080,http://windows-wsl:8080"),
		DatabaseURL:    getEnv("DATABASE_URL", "postgres://boostai:boostai_dev_password@localhost:5439/boostai?sslmode=disable"),
		JWTSecret:      getEnv("JWT_SECRET", "boostai-dev-jwt-secret-change-me"),
		SessionCookie:  getEnv("SESSION_COOKIE_NAME", "boostai_session"),
		AIReviewEndpoint: getEnv("AI_REVIEW_ENDPOINT", ""),
		AIReviewAPIKey:   getEnv("AI_REVIEW_API_KEY", ""),
		AIReviewModel:    getEnv("AI_REVIEW_MODEL", ""),
	}
}

func (c *Config) IsDevelopment() bool {
	return strings.ToLower(c.Environment) == "development"
}

func (c *Config) IsProduction() bool {
	return strings.ToLower(c.Environment) == "production"
}

func getEnv(key, fallback string) string {
	if value, exists := os.LookupEnv(key); exists {
		return value
	}

	return fallback
}