// +build ignore

package main

import (
	"bufio"
	"io/ioutil"
	"log"
	"os"
	"path/filepath"
	"strings"
	"text/template"
)

func main() {
	dir := os.Args[1]

	files, err := ioutil.ReadDir(dir)
	if err != nil {
		log.Fatal(err)
	}

	var str strings.Builder

	for _, file := range files {
		if name := file.Name(); filepath.Ext(name) == ".gots" {
			str.WriteString("\n" + `{{define "`)
			str.WriteString(strings.TrimSuffix(name, ".gots"))
			str.WriteString(`"}}<script>`)

			func() {
				in, err := os.Open(filepath.Join(dir, name))
				if err != nil {
					log.Fatal(err)
				}
				defer in.Close()

				scanner := bufio.NewScanner(in)
				for scanner.Scan() {
					line := strings.TrimSpace(scanner.Text())
					if line != "" {
						str.WriteString(line)
						str.WriteRune('\n')
					}
				}
				if err := scanner.Err(); err != nil {
					log.Fatal(err)
				}
			}()

			str.WriteString("</script>{{end}}")
		}
	}

	out, err := os.Create("generated.go")
	if err != nil {
		log.Fatal(err)
	}

	err = generator.Execute(out, str.String())
	if err != nil {
		log.Fatal(err)
	}

	err = out.Close()
	if err != nil {
		log.Fatal(err)
	}
}

var generator = template.Must(template.New("").Parse(`// Code generated by zenity; DO NOT EDIT.
// +build darwin

package osa

import "html/template"

var scripts = template.Must(template.New("").Parse(` + "`{{.}}`" + `))
`))