//** REQUEST TYPES **//
export const REQUEST_TYPE_POST = "POST";
export const REQUEST_TYPE_GET = "GET";
export const REQUEST_TYPE_PUT = "PUT";
export const REQUEST_TYPE_DELETE = "DELETE";
//** POST CONTENT TYPES **//
export const CONTENT_TYPE_JSON = "json";
export const CONTENT_TYPE_FORM = "x-www-form-urlencoded";
//** API URLS **//
export const API_STATUS = "/api/v1/status";
export const API_GET_NAV = "/api/settings/nav";
export const API_NEW_PAGE = "/api/v1/page/create";
export const API_EDIT_PAGE = "/api/v1/page/write";
export const API_DELETE_PAGE = "/api/v1/page/delete";
export const API_SETTINGS_SYNC = "/api/v1/settings/sync";
export const API_PUBLISH_PAGES = "/api/v1/settings/publish";
export const API_NAV_SYNC = "/api/v1/settings/nav-sync";
export const API_REINDEX_PAGES = "/api/v1/settings/reindex";
export const API_SEND_MAIL = "/api/v1/mailer";
export const API_LOGIN = "/api/v1/login";
//** API TASKS **//
export const AUTH_STATUS = "getAuthStatus";
export const TASK_SETTINGS_WRITE = "writeSettings";
export const TASK_PUBLISH_SITE = "publishSite";
export const TASK_PAGE_CREATE = "createNewPage";
export const TASK_PAGE_EDIT = "editPage";
export const TASK_PAGE_DELETE = "deletePage";
export const TASK_SEND_MAIL = "sendMail";
export const TASK_REINDEX_PAGE = "reIndexPages";
//** API STATUS **//
export const API_ACCESS_GOOD = "apiUseAuthorized";
export const API_ACCESS_BAD = "apiUseNotAuthorized";

/**
 * A can of methods used to edit install settings, navigation pages.
 */

class FipamoAdminAPI {
  /**
   * @constructor
   * @param {string} baseURL - url of site; uses local when empty
   * @param {string} key - user api key
   */
  constructor(baseURL = null, key = null) {
    this.percentComplete = 0; //for later
    this.token = null;
    this.baseURL = null;
    this.key = null;
    if (key) this.key = key;
    if (baseURL) this.baseURL = baseURL;
    //if key is valid, checks to see if a session is active and returns
    this._request(
      this.baseURL
        ? this.baseURL + API_STATUS + "?key=" + this.key
        : API_STATUS + "?key=" + this.key
    ).then((response) => {
      if (response.type === API_ACCESS_GOOD) {
        this.token = response.token;
      } else {
        //don't set token
        //console.log("NO TOKEN");
      }
    });
  }
  /**
   * Promise method for checking credentials. Must login to use Admin API.
   * @param {object} data - json object that contains data for set up
   * @property {string} handle - handle for site user
   * @property {string} password - password for site user
   */
  login(data) {
    return new Promise((resolve, reject) => {
      this.baseURL ? (data.remote = true) : (data.remote = false);
      this.key ? (data.key = this.key) : (data.key = null);
      this._request(
        this.baseURL ? this.baseURL + API_LOGIN : API_LOGIN,
        AUTH_STATUS,
        REQUEST_TYPE_POST,
        CONTENT_TYPE_JSON,
        data
      )
        .then((result) => {
          resolve(result);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }
  /**
   * Method for saving settings
   * @param {object} data - json object that contains settings data set on the front-end
   * @property {string} global.base_url - base url for site
   * @property {string} global.title - site title
   * @property {string} global.descriptions - brief site summary
   * @property {string} global.background - url for site feature image for header
   * @property {boolean} global.private - privacy state for site [disabled]
   * @property {boolean} global.renderOnSave - property for publishing site when page saved [disabled]
   * @property {string} global.theme - current theme for site
   * @property {boolean} global.externalAPI - toggle for external API access
   * @property {string} member.handle - current member handle
   * @property {string} member.email - current member email
   * @property {string} email.active - current email protocol being used
   * @property {string} email.smtp.domain - url of smtp service being
   * @property {string} email.smtp.email - email account of smtp service
   * @property {string} email.smtp.password - password for email of smtp service
   * @property {string} email.mailgun.domain - mailgun domain url
   * @property {string} email.mailgun.key - mailgun key
   */
  syncSettings(data) {
    return new Promise((resolve, reject) => {
      this._request(
        this.baseURL
          ? this.baseURL + API_SETTINGS_SYNC + "?key=" + this.key
          : API_SETTINGS_SYNC + "?key=" + this.key,
        TASK_SETTINGS_WRITE,
        REQUEST_TYPE_POST,
        CONTENT_TYPE_JSON,
        data
      )
        .then((result) => {
          resolve(result);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }

  /**
   * Method for retrieving user authorizing user login
   * @param {object} data - json object that contains task
   * @property {string} task - publishing task [deprecated]
   */
  publishSite(data) {
    return new Promise((resolve, reject) => {
      this._request(
        //API_PUBLISH_PAGES,
        this.baseURL ? this.baseURL + API_PUBLISH_PAGES : API_PUBLISH_PAGES,
        TASK_PUBLISH_SITE,
        REQUEST_TYPE_POST,
        CONTENT_TYPE_JSON,
        data
      )
        .then((result) => {
          resolve(result);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }

  /**
   * Method for handling page creating and editing
   * @param {string} task - current page action
   * @param {object} data - form object that contains info for current page being edited/created
   * @property {string} id - sequence id for page
   * @property {string} uuid - unique identifier for page
   * @property {string} layout - current page layout
   * @property {string} current_title - saved url save title for persistence when changing title
   * @property {string} content - markdown body of page
   * @property {string} title - current title of page
   * @property {string} created - date page was created
   * @property {string} slug - url safe string of page title
   * @property {string} tags - comma separated list of tags
   * @property {boolean} menu - property that indicates page is included in site menu
   * @property {boolean} featured - property that indicates page is featured
   * @property {boolean} published - property that indicates page is public
   * @property {input} feature_image - main image for page
   */
  pageActions(task, data) {
    let url, event, content;
    switch (task) {
      case TASK_PAGE_CREATE:
        url = API_NEW_PAGE;
        event = TASK_PAGE_CREATE;
        content = CONTENT_TYPE_FORM;
        break;
      case TASK_PAGE_EDIT:
        url = API_EDIT_PAGE;
        event = TASK_PAGE_EDIT;
        content = CONTENT_TYPE_FORM;
        break;

      case TASK_PAGE_DELETE:
        url = API_DELETE_PAGE;
        event = TASK_PAGE_DELETE;
        content = CONTENT_TYPE_JSON;
        break;

      default:
        break;
    }

    if (this.baseURL) {
      data.key = this.key;
      data.remote = true;
    } else {
      data.remote = false;
    }

    return new Promise((resolve, reject) => {
      this._request(
        this.baseURL ? this.baseURL + url : url,
        event,
        REQUEST_TYPE_POST,
        content,
        data
      )
        .then((result) => {
          resolve(result);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }

  /**
   * Method for saving pages to be included in main site navigation
   * @param {object} data - json object that contains items to be included in main site navigation
   * @property {string} item.title - page title
   * @property {string} item.slug - url safe title
   * @property {string} item.uuid - unique identifier
   * @property {string} item.path - directory path to associated markdown file
   */
  syncNav(data) {
    return new Promise((resolve, reject) => {
      this._request(
        this.baseURL ? this.baseURL + API_NAV_SYNC : API_NAV_SYNC,
        TASK_SETTINGS_WRITE,
        REQUEST_TYPE_POST,
        CONTENT_TYPE_JSON,
        data
      )
        .then((result) => {
          resolve(result);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }
  /**
   * Method for sending mail
   * @param {object} message - json object that contains items to be included in main site navigation
   * @property {string} content - message to send
   */
  sendMail(message) {
    return new Promise((resolve, reject) => {
      this._request(
        this.baseURL ? this.baseURL + API_SEND_MAIL : API_SEND_MAIL,
        TASK_SEND_MAIL,
        REQUEST_TYPE_POST,
        CONTENT_TYPE_JSON,
        message
      )
        .then((result) => {
          resolve(result);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }
  /**
   * Maintenance method to clean up page sequencing [disabled]
   * @param {object} data - json object that contains items to be included in main site navigation
   */
  reindexPages(data) {
    return new Promise((resolve, reject) => {
      this._request(
        this.baseURL ? this.baseURL + API_REINDEX_PAGES : API_REINDEX_PAGES,
        TASK_REINDEX_PAGE,
        REQUEST_TYPE_POST,
        CONTENT_TYPE_JSON,
        data
      )
        .then((result) => {
          resolve(result);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }
  //--------------------------
  // private
  //--------------------------
  _request(
    requestURL,
    eventType,
    requestType = REQUEST_TYPE_GET,
    contentType = CONTENT_TYPE_JSON,
    requestData = null
  ) {
    var self = this;
    return new Promise(function (resolve, reject) {
      var request = new XMLHttpRequest();
      request.upload.onprogress = self.handleLoadProgress;
      request.open(requestType, requestURL, true);
      request.onload = () => {
        if (request.status == 200) {
          let response = JSON.parse(request["response"]);
          resolve(response);
        } else {
          let error = JSON.parse(request["response"]);
          reject(error);
        }
      };
      if (requestType == REQUEST_TYPE_PUT || requestType == REQUEST_TYPE_POST) {
        if (
          eventType === TASK_SETTINGS_WRITE ||
          eventType === TASK_PAGE_EDIT ||
          eventType === TASK_PAGE_CREATE ||
          eventType === TASK_PAGE_DELETE ||
          eventType === TASK_PUBLISH_SITE ||
          eventType === TASK_REINDEX_PAGE
        )
          request.setRequestHeader("fipamo-access-token", self.token);

        switch (contentType) {
          case CONTENT_TYPE_JSON:
            request.setRequestHeader(
              "Content-type",
              "application/" + contentType
            );
            request.send(JSON.stringify(requestData));
            break;
          case CONTENT_TYPE_FORM:
            request.send(requestData);
            break;
        }
      } else {
        request.send();
      }
    });
  }

  //--------------------------
  // event handlers
  //--------------------------
  handleLoadProgress(e) {
    this.percentComplete = Math.ceil((e.loaded / e.total) * 100);
    //pass element to display request progress
  }
}

export { FipamoAdminAPI as default };