package main

import (
	"regexp"
	"strings"
	"time"
)

// IsValidDate checks if the date string is in YYYYMMDD format
func IsValidDate(date string) bool {
	// Check basic format with regex
	matched, err := regexp.MatchString(`^\d{8}$`, date)
	if err != nil || !matched {
		return false
	}

	// Parse date to verify it's a valid date
	_, err = time.Parse("20060102", date)
	return err == nil
}

// SanitizeFilename replaces invalid filename characters to match arxiva's sanitization
func SanitizeFilename(s string) string {
	s = strings.ReplaceAll(s, ":", "_")
	s = strings.ReplaceAll(s, " ", "_")
	return s
}