76 lines
1.3 KiB
Go
76 lines
1.3 KiB
Go
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package main
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import (
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"encoding/json"
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"errors"
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"io"
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"net/http"
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)
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type jsonResponse struct {
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Error bool `json:"error"`
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Message string `json:"message"`
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Data any `json:"data,omitempty"`
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}
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func (app *Config) readJSON(w http.ResponseWriter, r *http.Request, data any) error {
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maxBytes := 1048576 // one megabyte
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r.Body = http.MaxBytesReader(w, r.Body, int64(maxBytes))
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dec := json.NewDecoder(r.Body)
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err := dec.Decode(data)
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if err != nil {
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return err
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}
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err = dec.Decode(&struct{}{})
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if err != io.EOF {
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return errors.New("body must have only a single JSON value")
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}
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return nil
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}
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func (app *Config) writeJSON(
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w http.ResponseWriter,
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status int,
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data any,
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headers ...http.Header,
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) error {
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out, err := json.Marshal(data)
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if err != nil {
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return err
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}
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if len(headers) > 0 {
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for key, value := range headers[0] {
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w.Header()[key] = value
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}
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}
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(status)
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_, err = w.Write(out)
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if err != nil {
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return err
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}
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return nil
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}
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func (app *Config) errorJSON(w http.ResponseWriter, err error, status ...int) error {
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statusCode := http.StatusBadRequest
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if len(status) > 0 {
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statusCode = status[0]
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}
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var payload jsonResponse
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payload.Error = true
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payload.Message = err.Error()
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return app.writeJSON(w, statusCode, payload)
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}
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