filelist.go

package main

import (
	"fmt"
	"git.sch.bme.hu/insert-epic-projlab-team-name-here/tooling/plab/helpers"
	"io/fs"
	"io/ioutil"
	"os/exec"
	"path/filepath"
	"strconv"
	"strings"
	"time"
	"unicode"
)

type fileinfo struct {
	name  string
	size  string
	date  string
	notes string
}

var Filelist = helpers.Subcommand{
	Name: "filelist",
	Command: func(args []string) {
		if len(args) != 2 {
			fmt.Println("usage: <dirname> <filelist>")
			return
		}

		list := readFile(args[1])
		list_map := mapizator(list)
		files := getData(args[0], list_map)
		genLatex(files)
	},
	Help: "generate file list", // TODO
}

func readFile(filename string) []string {
	b, e := ioutil.ReadFile(filename)
	if e != nil {
		panic(e)
	}
	str := string(b)
	return strings.Split(str, "\n")
}

func mapizator(list []string) map[string]string {
	list_map := make(map[string]string)

	for _, v := range list {
		elements := strings.Split(v, "=")
		list_map[elements[0]] = elements[1]
	}
	return list_map
}

func getCreateTime(filepath string) string {
	b, e := exec.Command("git", "log", "--format=%ai", filepath).Output()
	if e != nil {
		b = make([]byte, 0)
	}

	str := string(b)
	lines := strings.Split(str, "\n")
	str = lines[len(lines)-1]

	if strings.Contains(str, "") {
		str = time.Now().Format("2006-01-02 15:04:05")
	}

	return str
}

func latexizeName(name string) string {
	cop := ""
	for i, ch := range name {
		if i != 0 && unicode.IsUpper(ch) {
			cop += `\-`
		}
		cop += string(ch)
	}
	return cop
}

func getData(dirname string, list map[string]string) []fileinfo {
	var files []fileinfo

	e := filepath.Walk(dirname, func(path string, info fs.FileInfo, err error) error {
		if err != nil {
			return err
		}

		if data, ok := list[info.Name()]; ok {
			file := fileinfo{
				name:  latexizeName(info.Name()),
				size:  strconv.FormatInt(info.Size(), 10) + " byte",
				date:  getCreateTime(path + info.Name()),
				notes: data,
			}
			files = append(files, file)
		}

		return nil
	})

	if e != nil {
		panic(e)
	}

	return files
}

func genLatex(files []fileinfo) {
	fmt.Println("\\newcolumntype{P}[1]{>{\\hspace{0pt}}p{#1}}") // TODO: rm % if needed
	fmt.Println("\\noindent\\begin{xltabular}{\\textwidth}{|P|l|l|X|}")
	fmt.Println("\\hline Fájlnév & Méret & Keletkezés ideje & Tartalom \\\\ \\hline \\hline \\endhead")

	for _, file := range files {
		fmt.Printf("%s & %s & %s & %s \\\\ \\hline\n", file.name, file.size, file.date, file.notes)
	}

	fmt.Println("\\end{xltabular}")

}