115 lines
2.4 KiB
Go
115 lines
2.4 KiB
Go
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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"golang.org/x/crypto/bcrypt"
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)
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func (app *application) readJSON(w http.ResponseWriter, r *http.Request, data interface{}) error {
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maxBytes := 1048576
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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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// Make sure there is only one entry.
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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 only have a single JSON value")
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}
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return nil
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}
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// writeJSON writes arbitrary data out as JSON
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func (app *application) writeJSON(
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w http.ResponseWriter,
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status int, data interface{},
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headers ...http.Header,
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) error {
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out, err := json.MarshalIndent(data, "", "\t")
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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 k, v := range headers[0] {
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w.Header()[k] = v
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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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w.Write(out)
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return nil
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}
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func (app *application) badRequest(w http.ResponseWriter, r *http.Request, err error) error {
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var payload JSONResponse
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payload.OK = false
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payload.Message = err.Error()
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out, err := json.MarshalIndent(payload, "", "\t")
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if err != nil {
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return err
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}
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusBadGateway)
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w.Write(out)
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return nil
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}
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func (app *application) invalidCredentials(w http.ResponseWriter) error {
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var payload JSONResponse
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payload.OK = false
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payload.Message = "invalid authentication credentials"
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err := app.writeJSON(w, http.StatusUnauthorized, payload)
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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 *application) passwordMatches(hash, password string) (bool, error) {
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app.errorLog.Println(hash, password)
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err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
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if err != nil {
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switch {
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case errors.Is(err, bcrypt.ErrMismatchedHashAndPassword):
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return false, nil
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default:
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return false, err
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}
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}
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return true, nil
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}
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func (app *application) failedValidation(
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w http.ResponseWriter,
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r *http.Request,
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errors map[string]string,
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) {
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var payload struct {
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OK bool `json:"ok"`
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Message string `json:"message"`
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Errors map[string]string `json:"errors"`
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}
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payload.OK = false
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payload.Message = "failed validation"
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payload.Errors = errors
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app.writeJSON(w, http.StatusUnprocessableEntity, payload)
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}
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