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package main
import (
"fmt"
"log"
"net/http"
)
func Err(w http.ResponseWriter, code int, a ...interface{}) {
var msg string // format string for error message
var hc int // HTTP error code
var prefix string = fmt.Sprintf("Error %d - ", code)
// ATTENTION: the used error codes in this switch statements should be
// stable. Do not change them, just append to the list!
switch code {
case 1:
msg = "Failed to load recipes from database."
hc = http.StatusInternalServerError
case 2:
msg = "Could not parse recipe from database request."
hc = http.StatusInternalServerError
case 3:
msg = "Exactly 1 'id' URL parameter expected but %d provided."
hc = http.StatusBadRequest
case 4:
msg = "'id' URL parameter '%s' doas not match the regex '%s'."
hc = http.StatusBadRequest
case 5:
msg = "Received error from database: '%s'."
hc = http.StatusInternalServerError
case 6:
msg = "Expected exactly 1 recipe from database but got %d."
hc = http.StatusInternalServerError
// deprecated
case 7:
msg = "Exactly 1 'type' URL parameter expected but %d provided."
hc = http.StatusBadRequest
case 8:
msg = "Form data does not contain recipe URL (key is '%s')."
hc = http.StatusBadRequest
case 9:
msg = "Could not add recipe: '%s'."
hc = http.StatusInternalServerError
case 10:
msg = "Expected exactly 1 recipe URL in '%s' but got %d (regex is '%s')."
hc = http.StatusBadRequest
case 11:
msg = "Could not get recipe ID from database: '%s'."
hc = http.StatusInternalServerError
// deprecated
case 12:
msg = "Given recipe type '%s' is unknown."
hc = http.StatusBadRequest
default:
msg = "An unknown error occured."
hc = http.StatusInternalServerError
}
// format full error message
final := fmt.Sprintf(prefix + msg, a...)
// send message to log and user
log.Println(final)
http.Error(w, final, hc)
}
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