// dbasik provides a service with which to convert spreadsheets containing
// data to JSON for further processing.
// Copyright (C) 2024 M R Lemon
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"fmt"
"net/http"
)
// The logError() method is a generic helper for logging an error message.
func (app *application) logError(r *http.Request, err error) {
app.logger.Info("dbasik error", "error", err)
}
// The errorResponse() method is a generic helper for sending JSON-formatted error
// messages to the client with a given status code. Because we are using any we
// we have flexibility over the values that we can include in the response.
func (app *application) errorResponse(w http.ResponseWriter, r *http.Request, status int, message any) {
env := envelope{"error": message}
// Write the response using the writeJSON() helper. If it returns
// an error, log it and send the client an empty response with a
// 500 Internal Server status code.
if err := app.writeJSON(w, status, env, nil); err != nil {
app.logError(r, err)
w.WriteHeader(500)
}
}
// The serverErrorResponse() method will be used when our application encounters an
// unexpected problem at runtime.
func (app *application) serverErrorResponse(w http.ResponseWriter, r *http.Request, err error) {
app.logError(r, err)
message := "the server encountered a problem and could not process your request"
app.errorResponse(w, r, http.StatusInternalServerError, message)
}
// The notFoundResponse() method will be used to send a 404 status code and JSON response
// to the client.
func (app *application) notFoundResponse(w http.ResponseWriter, r *http.Request) {
message := "the requested resource could not be found"
app.errorResponse(w, r, http.StatusNotFound, message)
}
func (app *application) methodNotAllowed(w http.ResponseWriter, r *http.Request) {
message := fmt.Sprintf("the %s method is not supported for this resource", r.Method)
app.errorResponse(w, r, http.StatusMethodNotAllowed, message)
}
