config.go

package main

import (
	"flag"
	"net/url"
	"os"
	"strconv"
)

type Config struct {
	BaseURL string
	Silent  bool
	Debug   bool
	Timeout int64
	Copy    bool
}

// loadConfig sets up defaults and loads overrides from different sources.
func loadConfig() *Config {
	conf := Config{
		BaseURL: "https://www.logpasta.com",
		Silent:  true,
		Timeout: 5,
	}

	loadEnv(&conf)
	loadFlags(&conf)

	if conf.Debug {
		printDebugInfo(&conf)
	}

	return &conf
}

// loadEnv loads config from environmental variables and overrides provided values.
func loadEnv(config *Config) {
	if u, e := url.Parse(os.Getenv("LOGPASTA_URL")); e == nil && len(u.String()) > 0 {
		config.BaseURL = u.String()
	}
	if v, e := strconv.ParseBool(os.Getenv("LOGPASTA_SILENT")); e == nil {
		config.Silent = v
	}
	if v, e := strconv.ParseBool(os.Getenv("LOGPASTA_DEBUG")); e == nil {
		config.Debug = v
	}
	if v, e := strconv.ParseInt(os.Getenv("LOGPASTA_TIMEOUT"), 10, 64); e == nil {
		config.Timeout = v
	}
	if v, e := strconv.ParseBool(os.Getenv("LOGPASTA_COPY")); e == nil {
		config.Copy = v
	}
}

func loadFlags(config *Config) {
	flag.StringVar(&config.BaseURL, "u", config.BaseURL, "logpasta base url, without trailing slash")
	flag.BoolVar(&config.Silent, "s", config.Silent, "silent mode - suppress logs unless request fails")
	flag.BoolVar(&config.Debug, "d", config.Debug, "debug mode - output debug information")
	flag.Int64Var(&config.Timeout, "t", config.Timeout, "timeout - http client timeout in seconds")
	flag.BoolVar(&config.Copy, "c", config.Copy, "copy the log url to clipboard")
	flag.Parse()
}