package main

import (
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"path"
	"path/filepath"
	"strconv"
	"strings"
)

func main() {
	dir, _ := os.Getwd()
	os.Chdir("web")
	run("npm", "run", "build-js")
	os.Chdir(dir)

	compileHtml := "web/dest/"

	fs, _ := ioutil.ReadDir(compileHtml)
	for _, f := range fs {
		if strings.HasSuffix(f.Name(), ".html") {
			name := filenameWithoutExtension(f.Name())
			fmt.Println("Create template go:", "src/server/web/pages/template/"+name+"_html.go")
			out, err := os.Create("src/server/web/pages/template/" + name + "_html.go")
			if err != nil {
				fmt.Println("Error create file", err)
				os.Exit(1)
				return
			}

			fmt.Println("Read html:", compileHtml+f.Name())
			buf, err := ioutil.ReadFile(compileHtml + f.Name())
			if err != nil {
				fmt.Println("Error read file", err)
				os.Exit(1)
				return
			}
			fmt.Println("Write template...")
			out.Write([]byte("package template \n\nvar " + strings.Title(name) + "Html = []byte{"))
			for _, b := range buf {
				out.Write([]byte(strconv.Itoa(int(b)) + ", "))
			}
			out.Write([]byte("}"))
			out.Close()

			fmt.Println("go fmt template...")
			run("go", "fmt", "src/server/web/pages/template/"+name+"_html.go")
			fmt.Println("Complete OK")
		}
	}
}

func run(name string, args ...string) {
	cmd := exec.Command(name, args...)
	cmd.Stderr = os.Stderr
	cmd.Stdout = os.Stdout
	cmd.Run()
}

func filenameWithoutExtension(fn string) string {
	return strings.TrimSuffix(filepath.Base(fn), path.Ext(fn))
}