package global

import (
	"net/http"
	"time"
)

var LAST_MODIFIED = time.Now()

var MimeTypes = map[string]string{
    "css":  "text/css; charset=utf-8",
    "png":  "image/png",
    "jpg":  "image/jpg",
    "webp": "image/webp",
    "html": "text/html",
    "asc":  "text/plain",
    "pub":  "text/plain",
    "js":   "application/javascript",
}

func IsModified(req *http.Request, last_modified time.Time) bool {
    if len(req.Header["If-Modified-Since"]) == 0 || len(req.Header["If-Modified-Since"][0]) == 0 {
        return true
    }
    request_time, err := time.Parse(http.TimeFormat, req.Header["If-Modified-Since"][0])
    if err != nil {
        return true
    }
    if request_time.Before(last_modified) {
        return true
    }
    return false
}