// Bamboo is the site agent: run it inside a private network to expose services from there.
package main

import (
	"context"
	"flag"
	"log"
	"os"
	"os/signal"
	"strings"

	"git.veillax.com/Veillax/bamboo"
	"git.veillax.com/Veillax/reef/dotenv"
	"git.veillax.com/Veillax/reef/selfupdate"
)

// version is set at build time (deploy/build.sh).
var version = "dev"

func env(k, def string) string {
	if v := os.Getenv(k); v != "" {
		return v
	}
	return def
}

func main() {
	// secrets (tokens, DNS-provider credentials) can live in a .env file instead of the command line
	envFile := dotenv.ArgPath(os.Args[1:], ".env")
	if _, err := dotenv.Load(envFile); err != nil {
		log.Fatalf("read %s: %v", envFile, err)
	}
	hh := flag.String("hammerhead", env("BAMBOO_HAMMERHEAD", ""), "URL of hammerhead")
	token := flag.String("token", env("BAMBOO_TOKEN", ""), "site token from the hammerhead UI")
	data := flag.String("data", env("BAMBOO_DATA", "./bamboo-data"), "directory for this agent's WireGuard key")
	dockerOn := flag.Bool("docker", os.Getenv("BAMBOO_DOCKER") == "1", "report local Docker containers so they can be picked as targets in the UI")
	flag.String("env", ".env", "file to read secrets and settings from")
	autoUpdate := flag.Bool("auto-update", os.Getenv("BAMBOO_AUTO_UPDATE") == "1", "check for new releases every few hours and update and restart by itself (Linux and macOS)")
	showVersion := flag.Bool("version", false, "print the version and exit")
	flag.Parse()
	if *showVersion {
		os.Stdout.WriteString("bamboo " + version + "\n")
		return
	}
	if *hh == "" || *token == "" {
		flag.Usage()
		os.Exit(2)
	}
	log.Printf("bamboo %s starting", version)
	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt)
	defer stop()
	upd := selfupdate.Config{Server: "https://git.veillax.com", Repo: "Veillax/bamboo", App: "bamboo", Current: version, Logf: log.Printf}
	if *autoUpdate {
		go selfupdate.Run(ctx, upd)
	}
	b, err := bamboo.New(bamboo.Config{Hammerhead: strings.TrimRight(*hh, "/"), Token: *token, DataDir: *data, Docker: *dockerOn,
		Version: version, AutoUpdate: *autoUpdate,
		UpdateNow: func(ctx context.Context) (string, error) { return selfupdate.CheckOnce(ctx, upd) }})
	if err != nil {
		log.Fatal(err)
	}
	b.Run(ctx)
}