import fs from "fs"
import { relative } from "path"

import { markdownPath } from "./config"

// converts file path to url
export function path2URL(pathToConvert: string): string {
	return `/${relative(markdownPath, pathToConvert)}`
		.replace(/\.[^/.]+$/, "") // remove the file extension
		.replace(/ /g, "-") // replace all space with a dash
}

// gets the text after the last slash
export function path2FileOrFolderName(inputPath: string): string {
	// remove trailing slash
	if (inputPath[-1] == "/")
		inputPath = inputPath.slice(0, inputPath.length - 1)

	// get the last section
	return inputPath.slice(inputPath.lastIndexOf("/") + 1)
}

// gets the nth occurance of a pattern in string
// returns -1 if nothing is found
// https://stackoverflow.com/a/14482123/12979111
export function nthIndex(str: string, pat: string, n: number) {
	let i = -1

	while (n-- && i++ < str.length) {
		i = str.indexOf(pat, i)
		if (i < 0) break
	}

	return i
}

export function writeToJSON(JSONFilePath: string, dataToWrite: string) {
	// create directory to put json content files
	fs.mkdirSync(JSONFilePath.slice(0, JSONFilePath.lastIndexOf("/")), {
		recursive: true,
	})

	// write content to json file
	fs.writeFileSync(JSONFilePath, dataToWrite)
}