func DefineWithHandler(vm *otto.Otto, l *loop.Loop, h http.Handler) error {
if err := promise.Define(vm, l); err != nil {
return err
}
s, err := vm.Compile("fetch.js", rice.MustFindBox("dist-fetch").MustString("bundle.js"))
if err != nil {
return err
}
if _, err := vm.Run(s); err != nil {
return err
}
vm.Set("__private__fetch_execute", func(c otto.FunctionCall) otto.Value {
jsReq := c.Argument(0).Object()
jsRes := c.Argument(1).Object()
cb := c.Argument(2)
method := mustValue(jsReq.Get("method")).String()
urlStr := mustValue(jsReq.Get("url")).String()
jsBody := mustValue(jsReq.Get("body"))
var body io.Reader
if jsBody.IsString() {
body = strings.NewReader(jsBody.String())
}
t := &fetchTask{
jsReq: jsReq,
jsRes: jsRes,
cb: cb,
}
l.Add(t)
go func() {
defer l.Ready(t)
req, err := http.NewRequest(method, urlStr, body)
if err != nil {
t.err = err
return
}
if h != nil && urlStr[0] == '/' {
res := httptest.NewRecorder()
h.ServeHTTP(res, req)
jsRes.Set("status", res.Code)
jsRes.Set("statusText", http.StatusText(res.Code))
h := mustValue(jsRes.Get("headers")).Object()
for k, vs := range res.Header() {
for _, v := range vs {
if _, err := h.Call("append", k, v); err != nil {
t.err = err
return
}
}
}
jsRes.Set("_body", string(res.Body.Bytes()))
} else {
res, err := http.DefaultClient.Do(req)
if err != nil {
t.err = err
return
}
jsRes.Set("status", res.StatusCode)
jsRes.Set("statusText", res.Status)
h := mustValue(jsRes.Get("headers")).Object()
for k, vs := range res.Header {
for _, v := range vs {
if _, err := h.Call("append", k, v); err != nil {
t.err = err
return
}
}
}
d, err := ioutil.ReadAll(res.Body)
if err != nil {
t.err = err
return
}
jsRes.Set("_body", string(d))
}
}()
return otto.UndefinedValue()
})
return nil
}