package main

import (
	"embed"
	"fmt"
	"net/http"
	"os"
	"time"

	"go.wit.com/dev/alexflint/arg"
	"go.wit.com/gui"
	"go.wit.com/lib/protobuf/forgepb"
	"go.wit.com/log"
)

// are sent via -ldflags at buildtime
var VERSION string
var BUILDTIME string
var ARGNAME string = "forged"

//go:embed resources/*
var resources embed.FS

var HOSTNAME string = "forge.wit.com"
var LIBDIR string = "/var/lib/forged/" // need to deprecate this
// var FORGEDIR string = "/home/forge" // deprecated?

func main() {
	me = new(mainType)
	gui.InitArg()
	me.pp = arg.MustParse(&argv)

	if argv.Bash {
		argv.doBash()
		os.Exit(0)
	}
	if len(argv.BashAuto) != 0 {
		argv.doBashAuto()
		os.Exit(0)
	}

	if argv.Hostname != "" {
		HOSTNAME = argv.Hostname
	}

	// the default forged dir is /home/forge
	if os.Getenv("FORGE_GOSRC") == "" {
		os.Setenv("FORGE_GOSRC", "/home/forge")
	}

	if os.Getenv("FORGE_PATCHDIR") == "" {
		os.Setenv("FORGE_PATCHDIR", "/var/lib/forged")
	}

	me.forge = forgepb.RawInitPB()

	if err := me.forge.InitPatchsets(); err != nil {
		log.Info("patches failed to open", err)
	}

	if argv.List != nil {
		doList()
		okExit("")
	}

	if argv.Merge != nil {
		if err := doMerge(); err != nil {
			badExit(err)
		}
		okExit("")
	}

	if argv.Pull != nil {
		log.Info("pull here")
		okExit("")
	}

	if argv.Daemon == true {
		mux := http.NewServeMux()
		okHandlerFunc := http.HandlerFunc(okHandler)

		// Set a limit of 50 kilobytes for requests to this handler.
		// Adjust this value to your needs.
		const maxUploadSize = 1025 * 1024 // 1 MB
		mux.Handle("/", http.MaxBytesHandler(okHandlerFunc, maxUploadSize))

		p := fmt.Sprintf(":%d", argv.Port)
		log.Printf("Server starting on port %s...\n", p)
		log.Printf("Test with: curl -d 'hello world' http://localhost:%s/\n", p)

		server := &http.Server{
			Addr:         p,
			Handler:      mux,
			ReadTimeout:  5 * time.Minute,
			WriteTimeout: 10 * time.Second,
			IdleTimeout:  120 * time.Second,
		}

		log.Printf("Server starting on port %s with a 1 MB request body limit...\n", p)
		if err := server.ListenAndServe(); err != nil {
			log.Fatal("Could not start server: %s\n", err)
		}
		okExit("")
	}

	/*
		// --- Best Practice: Create a custom http.Server ---
		server := &http.Server{
			Addr:    p,
			Handler: mux,

			// ReadTimeout is the total time to read the entire request, including the body.
			// Increase this to a value that can accommodate your largest expected uploads.
			// For example, 5 minutes.
			ReadTimeout: 5 * time.Minute,

			// WriteTimeout is the maximum duration before timing out writes of the response.
			WriteTimeout: 10 * time.Second,

			// IdleTimeout is the maximum amount of time to wait for the
			// next request when keep-alives are enabled.
			IdleTimeout: 120 * time.Second,
		}
	*/

	/*
			log.Println(argv.Version(), "HOSTNAME set to:", HOSTNAME)
			log.Println("Running on port", "http://localhost"+p)
			log.Println("Running on port", "http://localhost"+p+"/ipv6.png")
			// if err := http.ListenAndServe(p, nil); err != nil {
			if err := server.ListenAndServe(); err != nil {
				log.Fatalf("Could not start server: %s\n", err)
			}
			/*
				log.Info("Running in --daemon mode")
				http.HandleFunc("/", okHandler)
				// go https() // use caddy instead
				p := fmt.Sprintf(":%d", argv.Port)
				log.Println(argv.Version(), "HOSTNAME set to:", HOSTNAME)
				log.Println("Running on port", "http://localhost"+p)
				log.Println("Running on port", "http://localhost"+p+"/ipv6.png")
				err := http.ListenAndServe(p, nil)
				if err != nil {
					log.Println("Error starting server:", err)
				}
			return
		}
	*/
	log.Info("--daemon was not set. Just list the patches.")
	// doList()
}

func formatDuration(d time.Duration) string {
	seconds := int(d.Seconds()) % 60
	minutes := int(d.Minutes()) % 60
	hours := int(d.Hours()) % 24
	days := int(d.Hours()) / 24

	result := ""
	if days > 0 {
		result += fmt.Sprintf("%dd ", days)
		return result
	}
	if hours > 0 {
		result += fmt.Sprintf("%dh ", hours)
		return result
	}
	if minutes > 0 {
		result += fmt.Sprintf("%dm ", minutes)
		return result
	}
	if seconds > 0 {
		result += fmt.Sprintf("%ds", seconds)
	}
	return result
}