package config

import (
	"bufio"
	"os"
	"strings"
)

type Config struct {
	Port              string
	BaseURL           string
	DataDir           string
	UploadDir         string
	DBPath            string
	SessionSecret     string
	WebControlURL     string
	GoogleClientID    string
	GoogleClientSecret string
}

func Load() *Config {
	loadDotEnv(".env")

	port := getEnv("PORT", "8085")
	baseURL := getEnv("BASE_URL", "http://localhost:"+port)
	dataDir := getEnv("DATA_DIR", "./data")
	uploadDir := dataDir + "/uploads"
	dbPath := dataDir + "/compartir.db"

	return &Config{
		Port:               port,
		BaseURL:            strings.TrimRight(baseURL, "/"),
		DataDir:            dataDir,
		UploadDir:          uploadDir,
		DBPath:             dbPath,
		SessionSecret:      getEnv("SESSION_SECRET", "super-secret-compartir-key-2026"),
		WebControlURL:      getEnv("WEBCONTROL_API_URL", "https://api.siax-system.net"),
		GoogleClientID:     getEnv("GOOGLE_CLIENT_ID", ""),
		GoogleClientSecret: getEnv("GOOGLE_CLIENT_SECRET", ""),
	}
}

func getEnv(key, fallback string) string {
	if val := os.Getenv(key); val != "" {
		return val
	}
	return fallback
}

func loadDotEnv(filepath string) {
	file, err := os.Open(filepath)
	if err != nil {
		return
	}
	defer file.Close()

	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		line := strings.TrimSpace(scanner.Text())
		if line == "" || strings.HasPrefix(line, "#") {
			continue
		}
		parts := strings.SplitN(line, "=", 2)
		if len(parts) == 2 {
			k := strings.TrimSpace(parts[0])
			v := strings.Trim(strings.TrimSpace(parts[1]), `"'`)
			if os.Getenv(k) == "" {
				os.Setenv(k, v)
			}
		}
	}
}