package apiserver

import (
	"fmt"
	"os"
	"strconv"
)

type Config struct {
	ListenAddr    string
	DBHost        string
	DBPort        int
	DBUser        string
	DBPass        string
	DBName        string
	DBSSL         string
	WebhookSecret string
	GiteaURL      string
	GiteaToken    string
}

func (c *Config) DatabaseDSN() string {
	return fmt.Sprintf("postgres://%s:%s@%s:%d/%s?sslmode=%s",
		c.DBUser, c.DBPass, c.DBHost, c.DBPort, c.DBName, c.DBSSL)
}

func LoadConfig() (*Config, error) {
	dbPort, err := strconv.Atoi(getenv("DBPORT", "5432"))
	if err != nil {
		return nil, fmt.Errorf("invalid DBPORT: %w", err)
	}
	return &Config{
		ListenAddr:    getenv("LISTEN_ADDR", ":8000"),
		DBHost:        getenv("DBHOST", "localhost"),
		DBPort:        dbPort,
		DBUser:        getenv("DBUSER", "forgebot"),
		DBPass:        getenv("DBPASS", ""),
		DBName:        getenv("DBNAME", "forgebot"),
		DBSSL:         getenv("DBSSL", "disable"),
		WebhookSecret: getenv("WEBHOOK_SECRET", ""),
		GiteaURL:      getenv("GITEA_URL", "https://git.unkin.net"),
		GiteaToken:    getenv("GITEA_TOKEN", ""),
	}, nil
}

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