package helper

import (
	"regexp"
)

func removeTrailingWhitespace(str string) string {
	re := regexp.MustCompile(`(^\s+)|(\s+$)`)
	return re.ReplaceAllString(str, "")
}

func removeDuplicateWhitespace(str string) string {
	re := regexp.MustCompile(`\s{2,}`)
	return re.ReplaceAllString(str, " ")
}

func removeNewlines(str string) string {
	re := regexp.MustCompile(`\n+`)
	return re.ReplaceAllString(str, "")
}

func removeDuplicateNewlines(str string) string {
	re := regexp.MustCompile(`\n{2,}`)
	return re.ReplaceAllString(str, "\n")
}

func CleanTitle(title string) string {
	title = removeDuplicateWhitespace(title)
	title = removeNewlines(title)
	return removeTrailingWhitespace(title)
}

func CleanContents(contents string) string {
	contents = removeDuplicateWhitespace(contents)
	contents = removeDuplicateNewlines(contents)
	return removeTrailingWhitespace(contents)
}