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Events.js
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Events.js
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class Events {
constructor(httpRequest, jwt, gcalBaseUrl) {
if (httpRequest === undefined || jwt === undefined || gcalBaseUrl === undefined) {
throw new Error('Events constructor: Missing arguments');
}
this._httpRequest = httpRequest;
this._JWT = jwt;
this._gcalBaseUrl = gcalBaseUrl;
}
_returnPromiseWithError(errorMsg) {
return new Promise((resolve, reject) => {
let err = new Error(errorMsg);
reject(err);
});
}
_checkCalendarId(calendarId, errorOrigin) {
if (calendarId === undefined || calendarId == '') {
let errorObject = { origin: errorOrigin, error: 'Missing calendarId argument; Check if defined in params and Settings file' };
return this._returnPromiseWithError(JSON.stringify(errorObject));
}
}
_checkCalendarAndEventId(calendarId, eventId, errorOrigin) {
if (calendarId === undefined || calendarId == '') {
let errorObject = { origin: errorOrigin, error: 'Missing calendarId argument; Check if defined in params and Settings file' };
return this._returnPromiseWithError(JSON.stringify(errorObject));
}
if (undefined === eventId) {
let errorObject = { origin: errorOrigin, error: 'Missing eventId argument' }
return this._returnPromiseWithError(JSON.stringify(errorObject));
}
}
_checkErrorResponse(expectedStatusCode, actualStatusCode, respBody, actualStatusMessage) {
if (actualStatusCode !== expectedStatusCode) {
let statusMsg = (actualStatusMessage === '' || actualStatusMessage === undefined) ? '' : '(' + actualStatusMessage + ')';
let errorObject = { statusCode: `${actualStatusCode}${statusMsg}`, errorBody: respBody };
// let errorMessage = '{ "statusCode": "' + actualStatusCode + statusMsg + '", "errorBody":' + JSON.stringify(respBody) + ' }';
throw new Error(JSON.stringify(errorObject));
}
}
_tryParseJSON(stringToParse) {
try {
return JSON.parse(stringToParse);
} catch (e) {
return stringToParse;
}
}
/** Deletes an event on the calendar specified. Returns promise with success msg if success
*
* @param {string} calendarId - Calendar identifier
* @param {string} eventId - EventId specifying event to delete
* @param {bool} params.sendNotifications (optional) - Whether to send notifications about the deletion of the event.
*/
delete(calendarId, eventId, params) {
let checkResult = this._checkCalendarAndEventId(calendarId, eventId, 'Events.delete');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.delete(`${this._gcalBaseUrl}${calendarId}/events/${eventId}`, params, this._JWT)
.then(resp => {
this._checkErrorResponse(204, resp.statusCode, resp.body, resp.statusMessage);
let status = resp.statusCode;
return { eventId: eventId, statusCode: status, statusMessage: resp.statusMessage, message: 'Event deleted successfully' };
})
.catch(err => {
let error = {
origin: 'Events.delete',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Returns a promise that list all events on calendar during selected period
*
* @param {string} calendarId - Calendar identifier
* @param {datetime} params.timeMin (optional) - start datetime of event in 2016-04-29T14:00:00+08:00 RFC3339 format
* @param {datetime} params.timeMax (optional) - end datetime of event in 2016-04-29T18:00:00+08:00 RFC3339 format
* @param {string} params.q (optional) - Free text search terms to find events that match these terms in any field, except for extended properties.
*/
get(calendarId, eventId, params) {
let checkResult = this._checkCalendarAndEventId(calendarId, eventId, 'Events.get');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.get(`${this._gcalBaseUrl}${calendarId}/events/${eventId}`, params, this._JWT)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body;
}).catch(err => {
let error = {
origin: 'Events.get',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Insert an event on the calendar specified. Returns promise of details of event created within response body from google
*
* @param {string} calendarId - Calendar identifier
* @param {string} params.summary - Event title to be specified in calendar event summary. Free-text
* @param {nested object} params.start - start.dateTime defines start datetime of event in 2016-04-29T14:00:00+08:00 RFC3339 format
* @param {nested object} params.end - end.dateTime defines end datetime of event in 2016-04-29T18:00:00+08:00 RFC3339 format
* @param {string} params.location (optional) - Location description of event. Free-text
* @param {string} params.description (optional) - Description of event.
* @param {string} params.status (optional) - Event status - confirmed, tentative, cancelled; tentative for all queuing
* @param {string} params.colorId (optional) - Color of the event
*/
insert(calendarId, params, query) {
let checkResult = this._checkCalendarId(calendarId, 'Events.insert');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.post(`${this._gcalBaseUrl}${calendarId}/events`, params, this._JWT, query)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body;
})
.catch(err => {
let error = {
origin: 'Events.insert',
error: this._tryParseJSON(err.message)
};
throw new Error(JSON.stringify(error));
});
}
/** Returns instances of the specified recurring event.
*
* @param {string} calendarId - Calendar identifier
* @param {string} eventId - EventId specifying event to delete
*/
instances(calendarId, eventId, params) {
let checkResult = this._checkCalendarId(calendarId, 'Events.instances');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.get(`${this._gcalBaseUrl}${calendarId}/events/${eventId}/instances`, params, this._JWT)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body.items;
})
.catch(err => {
let error = {
origin: 'Events.instances',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Returns a promise that list all events on calendar during selected period
*
* @param {string} calendarId - Calendar identifier
* @param {datetime} params.timeMin (optional) - start datetime of event in 2016-04-29T14:00:00+08:00 RFC3339 format
* @param {datetime} params.timeMax (optional) - end datetime of event in 2016-04-29T18:00:00+08:00 RFC3339 format
* @param {string} params.q (optional) - Free text search terms to find events that match these terms in any field, except for extended properties.
*/
list(calendarId, params) {
let checkResult = this._checkCalendarId(calendarId, 'Events.list');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.get(`${this._gcalBaseUrl}${calendarId}/events`, params, this._JWT)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body.items;
}).catch(err => {
let error = {
origin: 'Events.list',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Moves an event to another calendar, i.e. changes an event's organizer.
* Returns updated event object of moved object when successful.
*
* @param {string} calendarId - Calendar identifier
* @param {string} eventId - EventId specifying event to move
* @param {string} params.destination - Destination CalendarId to move event to
*/
move(calendarId, eventId, params) {
let checkResult = this._checkCalendarAndEventId(calendarId, eventId, 'Events.move');
if (undefined !== checkResult) {
return checkResult;
}
if (undefined === params.destination) {
return this._returnPromiseWithError('Events.move: Missing destination CalendarId argument');
}
return this._httpRequest.postWithQueryString(`https://www.googleapis.com/calendar/v3/calendars/${calendarId}/events/${eventId}/move`, params, this._JWT)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body;
})
.catch(err => {
let error = {
origin: 'Events.move',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Creates an event based on a simple text string.
*
* @param {string} calendarId - Calendar identifier
* @param {string} params.text - The text describing the event to be created.
*/
quickAdd(calendarId, params) {
let checkResult = this._checkCalendarId(calendarId, 'Events.quickAdd');
if (undefined !== checkResult) {
return checkResult;
}
if (undefined === params.text) {
return this._returnPromiseWithError('Events.quickAdd: Missing text in required query parameters');
}
return this._httpRequest.postWithQueryString(`${this._gcalBaseUrl}${calendarId}/events/quickAdd`, params, this._JWT)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body;
})
.catch(err => {
let error = {
origin: 'Events.quickAdd',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Patches an event on the calendar specified. Returns promise of details of patched event
*
* @param {string} calendarId - Calendar identifier
* @param {string} eventId - EventId specifying event to update
*/
patch(calendarId, eventId, params, query) {
let checkResult = this._checkCalendarAndEventId(calendarId, eventId, 'Events.patch');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.patch(`${this._gcalBaseUrl}${calendarId}/events/${eventId}`, params, this._JWT, query)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body;
})
.catch(err => {
let error = {
origin: 'Events.patch',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Updates an event on the calendar specified. Returns promise of details of updated event
*
* @param {string} calendarId - Calendar identifier
* @param {string} eventId - EventId specifying event to update
*/
update(calendarId, eventId, params, query) {
let checkResult = this._checkCalendarAndEventId(calendarId, eventId, 'Events.update');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.put(`${this._gcalBaseUrl}${calendarId}/events/${eventId}`, params, this._JWT, query)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body;
})
.catch(err => {
let error = {
origin: 'Events.update',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
/** Watch for changes to Events resources
*
* @param {string} calendarId - Calendar identifier
*/
watch(calendarId, params, query) {
let checkResult = this._checkCalendarId(calendarId, 'Events.watch');
if (undefined !== checkResult) {
return checkResult;
}
return this._httpRequest.post(`${this._gcalBaseUrl}${calendarId}/events/watch`, params, this._JWT, query)
.then(resp => {
this._checkErrorResponse(200, resp.statusCode, resp.body, resp.statusMessage);
let body = typeof resp.body === 'string' ? JSON.parse(resp.body) : resp.body;
return body;
})
.catch(err => {
let error = {
origin: 'Events.watch',
error: this._tryParseJSON(err.message) // return as object if JSON, string if not parsable
};
throw new Error(JSON.stringify(error));
});
}
}
module.exports = Events;