package config

import (
	"os"
	"path/filepath"
	"strings"

	"github.com/joho/godotenv"
)

type Config struct {
	Addr       string
	DataDir    string
	SessionKey string // random string
	BaseURL    string // external URL used in clone instructions, e.g. https://gitgud.ikuro.dev
}

func (c Config) DBPath() string {
	return filepath.Join(c.DataDir, "app.db")
}

func (c Config) ReposDir() string {
	return filepath.Join(c.DataDir, "repos")
}

func Load() (Config, error) {
	// Load .env if present; in containers config comes from real env vars.
	_ = godotenv.Load()

	dataDir, err := filepath.Abs(os.Getenv("GITGUD_DATA_DIR"))
	if err != nil {
		return Config{}, err
	}

	baseURL := os.Getenv("GITGUD_BASE_URL")
	if baseURL == "" {
		addr := os.Getenv("GITGUD_ADDR")
		if strings.HasPrefix(addr, ":") {
			addr = "localhost" + addr
		}
		baseURL = "http://" + addr
	}
	baseURL = strings.TrimRight(baseURL, "/")

	return Config{
		Addr:       os.Getenv("GITGUD_ADDR"),
		DataDir:    dataDir,
		SessionKey: os.Getenv("GITGUD_SESSION_KEY"),
		BaseURL:    baseURL,
	}, nil
}