skyscanner

skyscanner.js

!function (e) {
  function t() {
    var t = e.skyscanner = e.skyscanner || {}, r = t.widgets = t.widgets || {}, a = r.renderCache = r.renderCache || {}, s = r.requests = r.requests || {};
    return {widgets: r, renderCache: a, requests: s}
  }

  function r(e, t, r) {
    t = t || "", r = r || {}, r.v = "6678ba";
    var a = Object.keys(r).filter(function (e) {
      return e && null !== r[e]
    }).map(function (e) {
      return encodeURIComponent(e) + "=" + encodeURIComponent(r[e])
    }).join("&");
    return e + t + "?" + a
  }

  function a(e, t) {
    return r("https://widgets.skyscanner.net/widget-server", e, t)
  }

  function s(e, t) {
    return r("https://www.skyscanner.net/g/widget-server", e, t)
  }

  function n(t, r) {
    this.scope = r || o, this.xhr = e && e.XMLHttpRequest, this.element = t, this.locale = this.element.dataset.locale, this.widgetType = this.element.dataset.skyscannerWidget, this.params = {}, this.xhrParams = [], this.errors = [], this.serverUrl = "https://widgets.skyscanner.net/widget-server"
  }

  function i(t) {
    if (e.document && e.document.querySelectorAll) {
      var r = e.document.querySelectorAll(t);
      return Array.prototype.slice.call(r)
    }
  }

  var o = t(), c = ["locale", "skyscannerWidget", "skyscannerWidgetLoading", "params", "scriptParams", "locationParam", "locationName", "locationCoords", "locationPhrase", "locationIataCode"], l = /^\{(.+)\}$/, d = /^([^(]+)\(([^)]+)\)$/, h = n.prototype;
  h.removeXhr = function (e) {
    delete this.scope.requests[e]
  }, h.getXhr = function (t, r, a) {
    if (!this.scope.requests[t]) {
      var s = new this.xhr;
      s.addEventListener("loadend", this.removeXhr.bind(this, t)), s.open("GET", t, !0), r || s.setRequestHeader("Widget-Referrer", e.location && e.location.href), a && (s.withCredentials = !0), s.send(null), this.scope.requests[t] = s
    }
    return this.scope.requests[t]
  }, h.addError = function (e, t) {
    this.errors.push({message: e, error: t})
  }, h.lookupLocation = function (e) {
    for (var t in e)if (!e[t])return;
    return this.getXhr(a("/v1.0/" + this.element.dataset.locale + "/location", e))
  }, h.unregisterXhrParam = function (e) {
    this.xhrParams = this.xhrParams.filter(function (t) {
      return t.request !== e
    })
  }, h.handleXhrParamLoad = function (e, t) {
    this.unregisterXhrParam(t), 4 !== t.readyState || 200 !== t.status ? this.setParam(e, null) : this.setParam(e, t.responseText), this.beginRender()
  }, h.registerXhrParam = function (e, t) {
    this.xhrParams.push({key: e, request: t}), t.addEventListener("load", this.handleXhrParamLoad.bind(this, e, t))
  }, h.setSimpleParam = function (e, t) {
    return void 0 === t ? void this.addError('Undefined parameter value for key "' + e + '"') : void(this.params[e] = t)
  }, h.setComplexParams = function (e, t) {
    var r = this, a = null;
    if ("string" == typeof t)try {
      a = JSON.parse(t)
    } catch (e) {
      this.addError("Error parsing JSON data: " + t)
    } else a = t;
    e.forEach(function (e) {
      r.setSimpleParam(e.paramKey, a && a[e.objectKey] || null)
    })
  }, h.setParam = function (e, t) {
    if (t instanceof this.xhr) this.registerXhrParam(e, t); else {
      var r = e.match(l);
      if (r) {
        var a = r[1].split(",").map(function (e) {
          return e.trim()
        }).map(function (e) {
          var t = e.match(d);
          return t ? {paramKey: t[1], objectKey: t[2]} : {paramKey: e, objectKey: e}
        });
        this.setComplexParams(a, t)
      } else this.setSimpleParam(e, t)
    }
  }, h.parseParamString = function (e) {
    var t = {};
    return e.split(";").forEach(function (e) {
      var r = e.split(":");
      e && r.length > 1 && (t[r[0]] = r[1])
    }), t
  }, h.parseFixedParams = function () {
    var e = this, t = this.parseParamString(this.element.dataset.params);
    Object.keys(t).forEach(function (r) {
      e.setParam(r, t[r])
    })
  }, h.parseScriptedParams = function () {
    var e = this, t = this.element, r = t.dataset.scriptParams;
    if (r)try {
      var a = JSON.parse(r);
      Object.keys(a).forEach(function (t) {
        var r = a[t];
        if (t && r)try {
          Array.isArray(r) && (r = r.join("\n"));
          var s = function () {
            return eval("(" + r + ")")
          }.apply(e);
          e.setParam(t, s)
        } catch (r) {
          e.addError('Error parsing scripted parameter "' + t + '"', r)
        }
      })
    } catch (e) {
      this.addError("Error parsing data-script-parameters: " + r, e)
    }
  }, h.parseLocationParams = function () {
    var e = this, t = {
      name: this.element.dataset.locationName || this.element.dataset.locationParam,
      latlon: this.element.dataset.locationCoords,
      phrase: this.element.dataset.locationPhrase,
      iataCode: this.element.dataset.locationIataCode
    }, r = {};
    if (Object.keys(t).forEach(function (a) {
        if (t[a])try {
          var s = function () {
            return eval("(" + t[a] + ")")
          }.apply(e);
          if ("undefined" == typeof s || "undefined" === s)throw"Undefined value";
          r[a] = s
        } catch (e) {
          console.warn("Failed to evaluate location " + a + " script: " + e)
        }
      }), Object.keys(r).length > 0) {
      var a = "{location(name),locationId(id)}", s = this.lookupLocation(r);
      s && this.setParam(a, s)
    }
  }, h.parseAffiliateParams = function () {
    var e = this.element.dataset.affiliate;
    if (e) {
      var t = JSON.stringify(this.parseParamString(e));
      this.setParam("tracking", t)
    }
  }, h.beginRender = function () {
    if (!(this.xhrParams.length > 0)) {
      if (this.errors.length > 0)return console.log("Error(s) occured while loading widget", this), void this.errors.forEach(function (e) {
        console.log(e.message), e.error && console.log(e.error)
      });
      var e = a("/v1.0/" + this.element.dataset.locale + "/widgets/" + this.element.dataset.skyscannerWidget, this.params);
      if ("undefined" != typeof this.scope.renderCache[e]) this.render(this.scope.renderCache[e]); else {
        var t = this.getXhr(e);
        t.addEventListener("load", this.handleRenderLoad.bind(this, e, t))
      }
    }
  }, h.handleRenderLoad = function (e, t) {
    if (4 === t.readyState && 200 === t.status) {
      var r = t.responseText;
      this.scope.renderCache[e] = r, this.render(r)
    }
  }, h.render = function (e) {
    var t = this;
    try {
      (function (__widget) {
        eval(e)
      }).call(this, this), this.replaceScriptNodes(), t.element.dataset.skyscannerWidgetLoaded = !0, this.personalise(), c.forEach(function (e) {
        delete t.element.dataset[e]
      })
    } catch (e) {
      t.element.dataset.skyscannerWidgetError = !0, console.error("Error rendering widget:", e)
    }
  }, h.personalise = function () {
    var e = this, t = {};
    Object.keys(e.params).forEach(function (r) {
      t[r] = e.params[r]
    }), t.locale = e.locale, t.widgetType = e.widgetType;
    var r = s("/personalise", t), a = this.getXhr(r, !0, !0);
    a.addEventListener("load", this.handlePersonalisationData.bind(this, a))
  }, h.handlePersonalisationData = function (e) {
    if (4 === e.readyState && 200 === e.status) {
      var t = JSON.parse(e.responseText);
      t.personalise && (void 0 !== t.message && (this.element.querySelector(".skyscanner-widget-text").innerHTML = t.message), void 0 !== t.referralUrl && (this.element.querySelector("a").href = t.referralUrl))
    }
  }, h.replaceScriptNodes = function () {
    var t = this.element.querySelectorAll("script");
    Array.prototype.forEach.call(t, function (t) {
      if ("SCRIPT" === t.tagName) {
        var r = e.document.createElement("script");
        r.text = t.innerHTML, Array.prototype.forEach.call(t.attributes, function (e) {
          "replace" !== e.name && r.setAttribute(e.name, e.value)
        }), t.parentNode.replaceChild(r, t)
      }
    })
  }, o.widgets.load = function (e) {
    console.log('widgets.load')
    e = e || i;
    var t = e("[data-skyscanner-widget]");
    console.log('widgets', t)
    t && t.forEach(function (e) {
      if (!(e.dataset.skyscannerWidgetLoading || e.dataset.skyscannerWidgetLoaded || e.dataset.skyscannerWidgetError)) {
        e.dataset.skyscannerWidgetLoading = !0;
        var t = new n(e);
        t.parseFixedParams(), t.parseScriptedParams(), t.parseLocationParams(), t.parseAffiliateParams(), t.beginRender()
      }
    })
  }, o.widgets.load(), "undefined" != typeof module && module.exports && (module.exports = {
    getWidgetUrl: a,
    WidgetElement: n,
    globals: o
  })
}("undefined" == typeof window ? global : window);