88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
/*
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* Copyright (c) 2018 Jeffrey Walter <jeffreydwalter@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
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* documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package request
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import (
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"encoding/json"
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"io"
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"log"
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"mime"
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"net/http"
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"os"
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"reflect"
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"github.com/pkg/errors"
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)
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type Response struct {
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http.Response
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}
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func (resp *Response) GetContentType() (string, error) {
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mediaType, _, err := mime.ParseMediaType(resp.Header.Get("Content-Type"))
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if err != nil {
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return "", errors.Wrap(err, "failed to get content type")
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}
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return mediaType, nil
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}
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func (resp *Response) Decode(s interface{}) error {
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defer resp.Body.Close()
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mediaType, err := resp.GetContentType()
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if err != nil {
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return errors.WithMessage(err, "failed to decode response body")
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}
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switch mediaType {
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case "application/json":
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err := json.NewDecoder(resp.Body).Decode(&s)
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if err != nil {
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return errors.Wrap(err, "failed to create "+reflect.TypeOf(s).String()+" object")
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}
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default:
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return errors.New("unsupported content type: " + mediaType)
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}
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return nil
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}
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func (resp *Response) Download(to string) (error, int64) {
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defer resp.Body.Close()
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// Create output file
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newFile, err := os.Create(to)
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if err != nil {
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log.Fatal(err)
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}
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defer newFile.Close()
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// Write bytes from HTTP response to file.
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// response.Body satisfies the reader interface.
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// newFile satisfies the writer interface.
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// That allows us to use io.Copy which accepts
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// any type that implements reader and writer interface
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bytesWritten, err := io.Copy(newFile, resp.Body)
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if err != nil {
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log.Fatal(err)
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}
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return nil, bytesWritten
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}
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