//** 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_SETTINGS = '/api/v1/settings/site';
export const API_GET_MEMBER_INFO = '/api/v1/settings/member';
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';
export const TASK_SYNC_SETTNIGS = 'syncSite';
export const TASK_SYNC_NAV = 'syncNav';
export const TASK_GET_SETTINGS = 'getSiteSettings';
export const TASK_GET_MEMBER_INFO = 'getMemberInfo';
//** 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 and content pages
 */

class FipamoAdminAPI {
	/**
	 * @constructor
	 * @param {string} baseURL - url of site; uses local when empty
	 * @param {object} progressBar - element to be used to display upload progress
	 */
	constructor(baseURL = null, progressBar = null) {
		this.percentComplete = 0; //for later
		this.baseURL = null;
		this.progressBar = progressBar;
		this.status = false;
		if (baseURL) this.baseURL = baseURL;
		//asks server if a session is active
		this._request(this.baseURL ? this.baseURL + API_STATUS : API_STATUS).then(
			response => {
				if (response.type === API_ACCESS_GOOD) {
					this.token = response.token;
				} else {
					//don't set token
					//console.log("NO TOKEN");
				}
			}
		);
	}
	/**
   * Promise method for authenticating and starting a session\
   * **POST**`/api/v1/login`
   * @param {Object[]} data - json object that contains data for set up
   * @param {string} data[].handle - handle for site user
   * @param {string} data[].password - password for site user
   * @example
   * api.login(data).then(response=>{
   *    console.log("RESPONSE", response);
   * })
   * @returns {object} json object that contains type and status of login request
   ```
        {
          "message":"Example Message of Affirmation or what you're missing!",
          "type":"exampleType",
        }
   ```
   */
	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 site and navigation settings\
   * **POST**`/api/v1/settings/:task`
   * @param {string} task - settings being synced `config | navigation`
   * @param {object[]} data - json object that contains settings data for [site] or [nav]
   * @param {string} data[].global.base_url - base url for site [site]
   * @param {string} data[].global.title - site title [site]
   * @param {string} data[].global.descriptions - brief site summary [site]
   * @param {string} data[].global.background - url for site feature image for header [site]
   * @param {boolean} data[].global.private - privacy state for site [disabled] [site]
   * @param {boolean} data[].global.renderOnSave - property for publishing site when page saved [disabled] [site]
   * @param {string} data[].global.theme - current theme for site [site]
   * @param {boolean} data[].global.externalAPI - toggle for external API access [site]
   * @param {string} data[].member.handle - current member handle [site]
   * @param {string} data[].member.email - current member email [site]
   * @param {string} data[].email.active - current email protocol being used [site]
   * @param {string} data[].email.smtp.domain - url of smtp service being [site]
   * @param {string} data[].email.smtp.email - email account of smtp service [site]
   * @param {string} data[].email.smtp.password - password for email of smtp service [site]
   * @param {string} data[].email.mailgun.domain - mailgun domain url [site]
   * @param {string} data[].email.mailgun.key - mailgun key [site]
   *
   * @param {string} data[].item.title - page title [nav]
   * @param {string} data[].item.slug - url safe title [nav]
   * @param {string} data[].item.uuid - unique identifier [nav]
   * @param {string} data[].item.path - directory path to associated markdown file [nav]
   * @example
   * api.sync(TASK, data).then(response=>{
   *    console.log("RESPONSE", response);
   * })
   * @returns {object} json object that contains type and status of sync request
   ```
   *
     {
       "message":"Example Message of Affirmation!",
       "type":"exampleType",
     }
   ```
   */
	sync(task, data) {
		return new Promise((resolve, reject) => {
			let url = '';
			switch (task) {
				case 'syncSite':
					url = API_SETTINGS_SYNC;
					break;
				case 'syncNav':
					url = API_NAV_SYNC;
					break;
			}
			this._request(
				this.baseURL ? this.baseURL + url : url,
				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
   * @param {string} data[].task - publishing task
   * @example
   * api.publish(TASK).then(response=>{
   *    console.log("RESPONSE", response);
   * })
   * @returns {object} json object that contains type and status of publis request
   * ```
      {
        "message":"Example Message of Affirmation!",
        "type":"exampleType",
      }
   * ```
   */
	publish(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\
   * **POST**`/api/v1/page/:task`
   * @param {string} task - current page action
   * @param {object[]} form - form object that contains info for current page being edited/created
   * @param {string} form[].id - sequence id for page, leave empty for new page
   * @param {string} form[].uuid - unique identifier for page, leave empty for new page
   * @param {string} form[].layout - current page layout
   * @param {string} form[].current_title - saved url save title for persistence when changing title, leave empty for new page
   * @param {string} form[].content - markdown body of page
   * @param {string} form[].title - current title of page
   * @param {string} form[].created - date page was created, leave empty for new page
   * @param {string} form[].slug - url safe string of page title
   * @param {string} form[].tags - comma separated list of tags
   * @param {boolean} form[].menu - property that indicates page is included in site menu
   * @param {boolean} form[].featured - property that indicates page is featured
   * @param {boolean} form[].published - property that indicates page is public
   * @param {string} form[].form_token - hidden property to authenticate form submission
   * @param {input} form[].feature_image - main image for page
   * @example
   * api.pageActions(TASK, data).then(response=>{
   *    console.log("RESPONSE", response);
   * })
   * @returns {object} json object that contains type and status of page edit request
   ```
      {
        "message":"Example Message of Affirmation!",
        "type":"exampleType",
      }
   ```
   */
	pageActions(task, data) {
		let url, event, content, type;
		switch (task) {
			case TASK_PAGE_CREATE:
				url = API_NEW_PAGE;
				event = TASK_PAGE_CREATE;
				content = CONTENT_TYPE_JSON;
				type = REQUEST_TYPE_POST;
				break;
			case TASK_PAGE_EDIT:
				url = API_EDIT_PAGE;
				event = TASK_PAGE_EDIT;
				content = CONTENT_TYPE_JSON;
				type = REQUEST_TYPE_PUT;
				break;

			case TASK_PAGE_DELETE:
				url = API_DELETE_PAGE;
				event = TASK_PAGE_DELETE;
				content = CONTENT_TYPE_JSON;
				type = REQUEST_TYPE_DELETE;
				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,
				type,
				content,
				data
			)
				.then(result => {
					resolve(result);
				})
				.catch(err => {
					reject(err);
				});
		});
	}

	/**
   * Method for sending mail (if completed in settings)\
   * **POST**`/api/v1/mailer`
   * @param {object[]} message - json object that contains items to be included in main site navigation
   * @param {string} message[].content - message to send
   * @example
   * api.sendMail(message).then(response=>{
   *    console.log("RESPONSE", response);
   * })
   * @returns {object} json object that contains type and status of page edit request
   ```
     {
       "message":"Example Message of Affirmation!",
       "type":"exampleType"
     }
   ```
   */
	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);
				});
		});
	}

	/**
   * *Promise method for retrieving site and member info*\
   * **GET** `/api/v1/settings/:type`
   * @param {string} type - type of info requested ['site'|'member'];
   * @example
   * api.getInfo("type").then(data=>{
        console.log("Info Object", data);
   * })
   * @returns {object} json object that contains data for requested information
   *
   * *info object example*
   * ```
     {
       "message":"message of affirmation!",
       "task":"type of info request",
       "data":json-data-object,
     }
   * ```
   */

	getInfo(type) {
		let url, task;
		if (type == 'site') {
			url = API_GET_SETTINGS;
			task = TASK_GET_SETTINGS;
		} else {
			url = API_GET_MEMBER_INFO;
			task = TASK_GET_MEMBER_INFO;
		}
		return new Promise((resolve, reject) => {
			this._request(this.baseURL ? this.baseURL + url : url, task)
				.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.addEventListener('progress', e =>
				self.handleLoadProgress(e, self.progressBar)
			);
			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 {
				if (
					eventType === TASK_GET_SETTINGS ||
					eventType === TASK_GET_MEMBER_INFO
				) {
					request.setRequestHeader('fipamo-access-token', self.token);
				}
				request.send();
			}
		});
	}

	//--------------------------
	// event handlers
	//--------------------------
	handleLoadProgress(e, progressBar) {
		let percent = Math.ceil((e.loaded / e.total) * 100);
		//if a progress bar element is present, talk to it
		if (progressBar != null) {
			progressBar.style.width = percent + '%';
		}
	}
}

export { FipamoAdminAPI as default };