<?php

namespace Configuration;

use Driver\SQL\SQL;
use \Driver\SQL\Strategy\SetNullStrategy;
use \Driver\SQL\Strategy\CascadeStrategy;

class CreateDatabase extends DatabaseScript {

  // NOTE:
  // explicit serial ids removed due to postgres' serial implementation

  public static function createQueries(SQL $sql): array {
    $queries = array();

    // Language
    $queries[] = $sql->createTable("Language")
      ->addSerial("uid")
      ->addString("code", 5)
      ->addString("name", 32)
      ->primaryKey("uid")
      ->unique("code")
      ->unique("name");

    $queries[] = $sql->insert("Language", array("code", "name"))
      ->addRow("en_US", 'American English')
      ->addRow("de_DE", 'Deutsch Standard');


    $queries[] = $sql->createTable("GpgKey")
      ->addSerial("uid")
      ->addString("fingerprint", 64)
      ->addDateTime("added", false, $sql->now())
      ->addDateTime("expires")
      ->addBool("confirmed")
      ->addString("algorithm", 32)
      ->primaryKey("uid");

    $queries[] = $sql->createTable("2FA")
      ->addSerial("uid")
      ->addEnum("type", ["totp","fido"])
      ->addString("data", 512) // either totp secret, fido challenge or fido public key information
      ->addBool("confirmed", false)
      ->addDateTime("added", false, $sql->now())
      ->primaryKey("uid");

    $queries[] = $sql->createTable("User")
      ->addSerial("uid")
      ->addString("email", 64, true)
      ->addString("name", 32)
      ->addString("password", 128)
      ->addString("fullName", 64, false, "")
      ->addString("profilePicture", 64, true)
      ->addDateTime("last_online", true, NULL)
      ->addBool("confirmed", false)
      ->addInt("language_id", true, 1)
      ->addInt("gpg_id", true)
      ->addInt("2fa_id", true)
      ->addDateTime("registered_at", false, $sql->currentTimestamp())
      ->primaryKey("uid")
      ->unique("email")
      ->unique("name")
      ->foreignKey("language_id", "Language", "uid", new SetNullStrategy())
      ->foreignKey("gpg_id", "GpgKey", "uid", new SetNullStrategy())
      ->foreignKey("2fa_id", "2FA", "uid", new SetNullStrategy());

    $queries[] = $sql->createTable("Session")
      ->addSerial("uid")
      ->addBool("active", true)
      ->addDateTime("expires")
      ->addInt("user_id")
      ->addString("ipAddress", 45)
      ->addString("os", 64)
      ->addString("browser", 64)
      ->addJson("data", false, '{}')
      ->addBool("stay_logged_in", true)
      ->addString("csrf_token", 16)
      ->primaryKey("uid", "user_id")
      ->foreignKey("user_id", "User", "uid", new CascadeStrategy());

    $queries[] = $sql->createTable("UserToken")
      ->addInt("user_id")
      ->addString("token", 36)
      ->addEnum("token_type", array("password_reset", "email_confirm", "invite", "gpg_confirm"))
      ->addDateTime("valid_until")
      ->addBool("used", false)
      ->foreignKey("user_id", "User", "uid", new CascadeStrategy());
    $queries[] = $sql->createTable("Group")
      ->addSerial("uid")
      ->addString("name", 32)
      ->addString("color", 10)
      ->primaryKey("uid")
      ->unique("name");

    $queries[] = $sql->insert("Group", array("name", "color"))
      ->addRow(USER_GROUP_MODERATOR_NAME, "#007bff")
      ->addRow(USER_GROUP_SUPPORT_NAME, "#28a745")
      ->addRow(USER_GROUP_ADMIN_NAME, "#dc3545");

    $queries[] = $sql->createTable("UserGroup")
      ->addInt("user_id")
      ->addInt("group_id")
      ->unique("user_id", "group_id")
      ->foreignKey("user_id", "User", "uid", new CascadeStrategy())
      ->foreignKey("group_id", "Group", "uid", new CascadeStrategy());

    $queries[] = $sql->createTable("Notification")
      ->addSerial("uid")
      ->addEnum("type", array("default", "message", "warning"), false, "default")
      ->addDateTime("created_at", false, $sql->currentTimestamp())
      ->addString("title", 32)
      ->addString("message", 256)
      ->primaryKey("uid");

    $queries[] = $sql->createTable("UserNotification")
      ->addInt("user_id")
      ->addInt("notification_id")
      ->addBool("seen", false)
      ->foreignKey("user_id", "User", "uid")
      ->foreignKey("notification_id", "Notification", "uid")
      ->unique("user_id", "notification_id");

    $queries[] = $sql->createTable("GroupNotification")
      ->addInt("group_id")
      ->addInt("notification_id")
      ->addBool("seen", false)
      ->foreignKey("group_id", "Group", "uid")
      ->foreignKey("notification_id", "Notification", "uid")
      ->unique("group_id", "notification_id");

    $queries[] = $sql->createTable("ApiKey")
      ->addSerial("uid")
      ->addInt("user_id")
      ->addBool("active", true)
      ->addString("api_key", 64)
      ->addDateTime("valid_until")
      ->primaryKey("uid")
      ->foreignKey("user_id", "User", "uid");

    $queries[] = $sql->createTable("Visitor")
      ->addInt("day")
      ->addInt("count", false, 1)
      ->addString("cookie", 26)
      ->unique("day", "cookie");

    $queries[] = $sql->createTable("Route")
      ->addSerial("uid")
      ->addString("request", 128)
      ->addEnum("action", array("redirect_temporary", "redirect_permanently", "static", "dynamic"))
      ->addString("target", 128)
      ->addString("extra", 64, true)
      ->addBool("active", true)
      ->primaryKey("uid")
      ->unique("request");

    $queries[] = $sql->insert("Route", array("request", "action", "target", "extra"))
      ->addRow("^/admin(/.*)?$", "dynamic", "\\Documents\\Admin", NULL)
      ->addRow("^/register/?$", "dynamic", "\\Documents\\Account", "account/register.twig")
      ->addRow("^/confirmEmail/?$", "dynamic", "\\Documents\\Account", "account/confirm_email.twig")
      ->addRow("^/acceptInvite/?$", "dynamic", "\\Documents\\Account", "account/accept_invite.twig")
      ->addRow("^/resetPassword/?$", "dynamic", "\\Documents\\Account", "account/reset_password.twig")
      ->addRow("^/resendConfirmEmail/?$", "dynamic", "\\Documents\\Account", "account/resend_confirm_email.twig")
      ->addRow("^/$", "static", "/static/welcome.html", NULL);

    $queries[] = $sql->createTable("Settings")
      ->addString("name", 32)
      ->addString("value", 1024, true)
      ->addBool("private", false) // these values are not returned from '/api/settings/get', but can be changed
      ->addBool("readonly", false) // these values are neither returned, nor can be changed from outside
      ->primaryKey("name");

    $settingsQuery = $sql->insert("Settings", array("name", "value", "private", "readonly"))
      // ->addRow("mail_enabled", "0") # this key will be set during installation
      ->addRow("mail_host", "", false, false)
      ->addRow("mail_port", "", false, false)
      ->addRow("mail_username", "", false, false)
      ->addRow("mail_password", "", true, false)
      ->addRow("mail_from", "", false, false)
      ->addRow("mail_last_sync", "", false, false)
      ->addRow("mail_footer", "", false, false);

    (Settings::loadDefaults())->addRows($settingsQuery);
    $queries[] = $settingsQuery;

    $queries[] = $sql->createTable("ContactRequest")
      ->addSerial("uid")
      ->addString("from_name", 32)
      ->addString("from_email", 64)
      ->addString("message", 512)
      ->addString("messageId", 78, true) # null = don't sync with mails (usually if mail could not be sent)
      ->addDateTime("created_at", false, $sql->currentTimestamp())
      ->unique("messageId")
      ->primaryKey("uid");

    $queries[] = $sql->createTable("ContactMessage")
      ->addSerial("uid")
      ->addInt("request_id")
      ->addInt("user_id", true) # null = customer has sent this message
      ->addString("message", 512)
      ->addString("messageId", 78)
      ->addDateTime("created_at", false, $sql->currentTimestamp())
      ->addBool("read", false)
      ->unique("messageId")
      ->primaryKey("uid")
      ->foreignKey("request_id", "ContactRequest", "uid", new CascadeStrategy())
      ->foreignKey("user_id", "User", "uid", new SetNullStrategy());

    $queries[] = $sql->createTable("ApiPermission")
      ->addString("method", 32)
      ->addJson("groups", true, '[]')
      ->addString("description", 128, false, "")
      ->primaryKey("method");

    $queries[] = $sql->createTable("MailQueue")
      ->addSerial("uid")
      ->addString("from", 64)
      ->addString("to", 64)
      ->addString("subject")
      ->addString("body")
      ->addString("replyTo", 64, true)
      ->addString("replyName", 32, true)
      ->addString("gpgFingerprint", 64, true)
      ->addEnum("status", ["waiting","success","error"], false, 'waiting')
      ->addInt("retryCount", false, 5)
      ->addDateTime("nextTry", false, $sql->now())
      ->addString("errorMessage", NULL,  true)
      ->primaryKey("uid");
    $queries = array_merge($queries, \Configuration\Patch\log::createTableLog($sql, "MailQueue", 30));

    $queries[] = $sql->createTable("News")
      ->addSerial("uid")
      ->addInt("publishedBy")
      ->addDateTime("publishedAt", false, $sql->now())
      ->addString("title", 128)
      ->addString("text", 1024)
      ->foreignKey("publishedBy", "User", "uid", new CascadeStrategy())
      ->primaryKey("uid");

    $queries[] = $sql->insert("ApiPermission", array("method", "groups", "description"))
      ->addRow("ApiKey/create", array(), "Allows users to create API-Keys for themselves")
      ->addRow("ApiKey/fetch", array(), "Allows users to list their API-Keys")
      ->addRow("ApiKey/refresh", array(), "Allows users to refresh their API-Keys")
      ->addRow("ApiKey/revoke", array(), "Allows users to revoke their API-Keys")
      ->addRow("Groups/fetch", array(USER_GROUP_SUPPORT, USER_GROUP_ADMIN), "Allows users to list all available groups")
      ->addRow("Groups/create", array(USER_GROUP_ADMIN), "Allows users to create a new groups")
      ->addRow("Groups/delete", array(USER_GROUP_ADMIN), "Allows users to delete a group")
      ->addRow("Routes/fetch", array(USER_GROUP_ADMIN), "Allows users to list all configured routes")
      ->addRow("Routes/save", array(USER_GROUP_ADMIN), "Allows users to create, delete and modify routes")
      ->addRow("Mail/test", array(USER_GROUP_SUPPORT, USER_GROUP_ADMIN), "Allows users to send a test email to a given address")
      ->addRow("Mail/Sync", array(USER_GROUP_SUPPORT, USER_GROUP_ADMIN), "Allows users to synchronize mails with the database")
      ->addRow("Settings/get", array(USER_GROUP_ADMIN), "Allows users to fetch server settings")
      ->addRow("Settings/set", array(USER_GROUP_ADMIN), "Allows users create, delete or modify server settings")
      ->addRow("Stats", array(USER_GROUP_ADMIN, USER_GROUP_SUPPORT), "Allows users to fetch server stats")
      ->addRow("User/create", array(USER_GROUP_ADMIN), "Allows users to create a new user, email address does not need to be confirmed")
      ->addRow("User/fetch", array(USER_GROUP_ADMIN, USER_GROUP_SUPPORT), "Allows users to list all registered users")
      ->addRow("User/get", array(USER_GROUP_ADMIN, USER_GROUP_SUPPORT), "Allows users to get information about a single user")
      ->addRow("User/invite", array(USER_GROUP_ADMIN), "Allows users to create a new user and send them an invitation link")
      ->addRow("User/edit", array(USER_GROUP_ADMIN), "Allows users to edit details and group memberships of any user")
      ->addRow("User/delete", array(USER_GROUP_ADMIN), "Allows users to delete any other user")
      ->addRow("Permission/fetch", array(USER_GROUP_ADMIN), "Allows users to list all API permissions")
      ->addRow("Visitors/stats", array(USER_GROUP_ADMIN, USER_GROUP_SUPPORT), "Allows users to see visitor statistics")
      ->addRow("Contact/respond", array(USER_GROUP_ADMIN, USER_GROUP_SUPPORT), "Allows users to respond to contact requests")
      ->addRow("Contact/fetch", array(USER_GROUP_ADMIN, USER_GROUP_SUPPORT), "Allows users to fetch all contact requests")
      ->addRow("Contact/get", array(USER_GROUP_ADMIN, USER_GROUP_SUPPORT), "Allows users to see messages within a contact request");

    self::loadPatches($queries, $sql);

    return $queries;
  }

  private static function loadPatches(&$queries, $sql) {
    $patchDirectory = './core/Configuration/Patch/';
    if (file_exists($patchDirectory) && is_dir($patchDirectory)) {
      $scan_arr = scandir($patchDirectory);
      $files_arr = array_diff($scan_arr, array('.', '..'));
      foreach ($files_arr as $file) {
        $suffix = ".class.php";
        if (endsWith($file, $suffix)) {
          $className = substr($file, 0, strlen($file) - strlen($suffix));
          $className = "\\Configuration\\Patch\\$className";
          $method = "$className::createQueries";
          $patchQueries = call_user_func($method, $sql);
          foreach ($patchQueries as $query) $queries[] = $query;
        }
      }
    }
  }
}