package main

import (
	"fmt"
	"io/fs"
	"os/exec"
	"path/filepath"
	"regexp"
)

func main() {
	dir := "/home/jacob/Notes/Journal/"
	journalRegex, err := regexp.Compile("^(\\d\\d\\d\\d)/(\\d\\d) - ([^/]*)/(\\d\\d) - ([^/]*)$")
	if err != nil {
		panic(err)
	}
	filepath.Walk(dir, func(path string, info fs.FileInfo, err error) error {
		path = path[len(dir):]
		matches := journalRegex.FindStringSubmatch(path)
		if len(matches) == 0 {
			return nil
		}

		year, month := matches[1], matches[2]
		monthName := matches[3]
		day, title := matches[4], matches[5]
		newPath := fmt.Sprintf("%s/%s - %s/%s-%s-%s - %s", year, month, monthName, year, month, day, title)
		mvCommand := exec.Command("git", "mv", path, newPath)
		mvCommand.Dir = dir
		output, err := mvCommand.CombinedOutput()
		if err != nil {
			fmt.Printf("error moving '%s' to '%s':\n%s\n\n", path, newPath, output)
		}
		return nil
	})
}