package config

import (
	"fmt"
	"os"
)

type Config struct {
	Project  string
	Instance string
	Database string
	Host     string
}

func Load() (Config, error) {
	c := Config{
		Project:  os.Getenv("SPANNER_PROJECT"),
		Instance: os.Getenv("SPANNER_INSTANCE"),
		Database: os.Getenv("SPANNER_DATABASE"),
		Host:     os.Getenv("SPANNER_EMULATOR_HOST"),
	}
	if c.Project == "" || c.Instance == "" || c.Database == "" {
		fmt.Printf("%v, %v, %v", c.Project, c.Instance, c.Database)
		fmt.Println()
		return c, fmt.Errorf("Missing .env credential")
	}
	return c, nil
}