class Cyclone {
    constructor() {
      tmp = location.pathname.split('/service')[1]
  
      tmp = tmp.substring(1, tmp.length);
      let re = /(http(s|):)/g
  
      //if (tmp.match(re)) {
      tmp = tmp.replace("http://", '')
      tmp = tmp.replace("https://", '')
      tmp = tmp.replace("http:/", '')
      tmp = tmp.replace("https:/", '')
      tmp = location.protocol + "//" + tmp
  
      document._location = new URL(tmp);
  
      this.url = new URL(document._location.href);
  
      this.bareEndpoint = location.host + "/service";
  
      if (this.url.pathname == "/") {
        this.paths = ['/']
      } else {
        this.paths = this.url.pathname.split('/')
      }
      this.host = 'https://' + this.url.host
  
      this.targetAttrs = ['href', 'src', 'action', 'srcdoc', 'srcset'];
  
      console.log("Cyclone Injected with paths of:", this.paths, this.url.pathname)
  
      /*const LocationHandler = {
        get(target, prop, reciver) {
          return loc[prop]
        },
        set(target, prop, val) {
          return 'hi'
        }
      }
      document._location = new Proxy(LocationHandler, loc)*/
    }
  
    rewriteUrl(link) {
      var rewritten;
  
      if (link.startsWith('https://') || link.startsWith('http://') || link.startsWith('//')) {
        if (link.startsWith('//')) {
          rewritten = 'https:' + link;
        } else {
          rewritten = link;
        };
      } else {
        if (link.startsWith('.')) {
          let offset = 1;
          if (link.startsWith('..')) {
            offset = 2;
          }
          let file = link.substr(link.indexOf('.') + 1 + offset, link.length)
  
          rewritten = this.url.hostname + file
        } else {
          if (link.startsWith('/')) {
            rewritten = this.host + link
          } else {
            rewritten = this.host + '/' + link;
          }
        }
      }
  
      var exceptions = ['about:', 'mailto:', 'javascript:', 'data:']
      let needstowrite = true;
      for (let i = 0; i < exceptions.length; i++) {
        if (link.startsWith(exceptions[i])) {
          needstowrite = false
        }
      }
  
      if (needstowrite) {
        rewritten = location.protocol + '//' + this.bareEndpoint + '/' + rewritten
        return rewritten;
      } else {
        return link;
      }
    }
  
    rewriteSrcset(sample) {
      return sample.split(',').map(e => {
        return (e.split(' ').map(a => {
          if (a.startsWith('http') || (a.startsWith('/') && !a.startsWith(this.prefix))) {
            var url = this.rewriteUrl(a)
          }
          return a.replace(a, (url || a))
        }).join(' '))
      }).join(',')
    }
  }
  
  self.addEventListener('fetch', function(event) {
    var uri = new URL(event.request.url);
  
    if (!uri.pathname.startsWith('/service') && uri.pathname == "/facicon.ico") {
      var tmp = uri.href;
      
      event.respondWith(
        fetch("https://Cyclone2.jimmynuetron.repl.co/service/"+tmp)
      )
    }
  });