package handlers

import (
	"net/http"
)

// parseFormOr400 parses the request form and returns false if parsing fails
// (after writing a 400 error response). Returns true if parsing succeeds.
func parseFormOr400(w http.ResponseWriter, r *http.Request) bool {
	if err := r.ParseForm(); err != nil {
		JSONError(w, http.StatusBadRequest, "Failed to parse form", err)
		return false
	}
	return true
}

// requireFormValue returns the form value for the given key, or writes a 400 error
// and returns empty string if the value is missing.
func requireFormValue(w http.ResponseWriter, r *http.Request, key string) (string, bool) {
	value := r.FormValue(key)
	if value == "" {
		JSONError(w, http.StatusBadRequest, "Missing required field: "+key, nil)
		return "", false
	}
	return value, true
}