65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package response
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import (
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"fmt"
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"io"
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"net/http"
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)
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func Write(w http.ResponseWriter, r *http.Request, res Response) {
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// w.Header() must be set before ResponseWriter.WriteHeader is called
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// or redirect is attempted
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hdrs := w.Header()
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for _, ck := range res.getCookies() {
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hdrs.Add("Set-Cookie", ck.String())
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}
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if ct, ok := res.getContentType(); ok {
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hdrs.Add("Content-Type", ct)
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}
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if code, to, ok := res.getRedirect(); ok {
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http.Redirect(w, r, to, code.Int())
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return
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}
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// the body is written after the status header, but it's read here
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// first, because if an error is incurred, an error status header will
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// need to be written.
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body, bodySet, err := res.getBody()
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if err != nil {
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http.Error(
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w,
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fmt.Sprintf("Failed to construct response body: %v", err.Error()),
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http.StatusInternalServerError,
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)
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return
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}
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if status, ok := res.getStatus(); ok {
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w.WriteHeader(status)
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}
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if bodySet {
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// will automatically set the status header,
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// if w.WriteHeader wasn't already called
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io.Copy(w, body)
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}
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}
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func WriteError(w http.ResponseWriter, err error) {
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http.Error(w, err.Error(), GetStatusFromError(err))
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}
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func GetStatusFromError(err error) int {
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status := http.StatusInternalServerError
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if e, ok := GetError(err); ok {
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if status, ok = e.GetStatus(); !ok {
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status = http.StatusInternalServerError
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}
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}
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return status
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}
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