main.go

package main

import (
	"fmt"
	"os"
	"path"
)

// Global Variables
var (
	output string
	pre    bool
	block  bool
	list   bool
	err    error

	filePath    string
	outPath     string
	customTitle string
)

// Defaults
var templatePath = "html_template.tmpl"
var titleCase = "none"

const noInput = `
meow: You might be missing an argument or entered a wrong option.
Try 'meow --help' for more information.
`

func parseArgs(x uint) {
	switch os.Args[x] {
	case "--help":
		// Print Help
		if len(os.Args) > 2 {
			fmt.Println("WARNING: --help doesn't expect any more arguments.")
		}
		fmt.Println(help)
		os.Exit(0)

	case "--generate":
		// Write template and css variable to file.
		if len(os.Args) > 2 {
			fmt.Println("WARNING: --generate option don't expect any more arguments.")
		}
		err = os.WriteFile(templatePath, []byte(templateFile), 0644)
		if err != nil {
			fmt.Println("ERROR: failed to generate template file")
			os.Exit(1)
		}
		err = os.WriteFile("style.css", []byte(cssFile), 0644)
		if err != nil {
			fmt.Println("ERROR: failed to generate css file")
			os.Exit(1)
		}
		os.Exit(0)

	case "-o", "--output":
		if len(os.Args) < 3 {
			fmt.Println(noInput)
			os.Exit(0)
		}
		outPath = os.Args[x+1]
		_, err = os.Stat(outPath)
		if os.IsNotExist(err) {
			fmt.Println("ERROR: output directory does not exist")
			//TODO: Ask user to create the directory ? mkdir -p <path>
			os.Exit(1)
		}
		parseArgs(x + 2)

	case "-t", "--template":
		if len(os.Args)-int(x) < 3 {
			fmt.Println(noInput)
			os.Exit(0)
		}
		templatePath = os.Args[x+1]
		parseArgs(x + 2)

	case "-c", "--setcase":
		if len(os.Args)-int(x) < 3 {
			fmt.Println(noInput)
			os.Exit(0)
		}
		titleCase = os.Args[x+1]
		parseArgs(x + 2)

	default:
		filePath = os.Args[x]
	}
}

func main() {
	if len(os.Args) == 1 {
		fmt.Println(noInput)
		os.Exit(0)
	}

	// passing 1st argument to parseArgs to check
	parseArgs(1)
	f, err := os.Stat(filePath)
	if os.IsNotExist(err) {
		fmt.Println("ERROR: input file/directory doesn't exist")
		os.Exit(1)
	}
	if !f.IsDir() {
		generateOutput()
		os.Exit(0)
	}

	files, err := os.ReadDir(filePath)
	if err != nil {
		fmt.Println("ERROR: can't read input directory")
	}
	copyPath := filePath
	for _, file := range files {
		if !file.IsDir() {
			filePath = path.Join(copyPath, file.Name())
			generateOutput()
		}
	}
	os.Exit(0)
}