<?php

session_start();
require_once "config.php";
require_once INCLUDE_DIR . "lib/util.php";

function validate($values){
  $errors = array();
  if(!$values["name"]){
    $errors["name"] = "お名前を入力してください";
  }
  if(!$values["kana"]){
    $errors["kana"] = "ふりがなを入力してください";
  }
  if($values["email"] !== $values["email2"]){
    $errors["email"] = $errors["email2"] = "メールアドレスを正確に入力してください";
  }
  if(!$values["email"]){
    $errors["email"] = "メールアドレスを入力してください";
  }
  if(!$values["email2"]){
    $errors["email2"] = "メールアドレスを入力してください";
  }
  if(!$values["detail"]){
    $errors["detail"] = "お問い合わせ内容を入力してください";
  }
  return $errors;
}

switch($_SERVER["REQUEST_METHOD"]){
case "GET":
  $values = ($_SESSION["contact_form"] === null ? array() : $_SESSION["contact_form"]);
  $errors = $_SESSION["contact_errors"];

  include INCLUDE_DIR . "contact/form.php";
  unset($_SESSION["contact_errors"]);
  break;

case "POST":
  switch($_POST["action"]){
  case "confirm":
    $s_values = array_map("safe_escape", $_POST);
    $_SESSION["contact_form"] = $_POST;

    $errors = validate($_POST);
    if($errors){
      $_SESSION["contact_errors"] = $errors;
      redirect("contact.php");
    }
    $token = onetime_token();
    $_SESSION["contact_token"] = $token;
    include INCLUDE_DIR . "contact/confirm.php";
    break;

  case "submit":
    $errors = validate($_SESSION["contact_form"]);
    if($errors or $_POST["token"] !== $_SESSION["contact_token"]){
      $_SESSION["contact_errors"] = $errors;
      redirect("contact.php");
    }

    require_once INCLUDE_DIR . "contact/mailtemplate.php";
    $values = $_SESSION["contact_form"];
    $body = mailtemplate($values);

    require_once INCLUDE_DIR . "lib/mailer.php";
    $mailer = new Mailer(MAIL_FROM, MAIL_NAME, MAIL_TITLE);
    $mailer->body = $body;
    $mailer->send($values["email"]);
    $mailer->send(MAIL_TO);

    include INCLUDE_DIR . "contact/submit.php";
    unset($_SESSION["contact_form"]);
    unset($_SESSION["contact_errors"]);
    unset($_SESSION["contact_token"]);
    break;
  }
  break;
}