/
main.ts
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/
main.ts
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import { createPlugin, EventSourceDef, addDays, DateEnv, requestJson, Dictionary } from '@fullcalendar/common'
import { OPTION_REFINERS } from './options-refiners'
import './options-declare'
import { EVENT_SOURCE_REFINERS } from './event-source-refiners'
import './event-source-declare'
// TODO: expose somehow
const API_BASE = 'https://www.googleapis.com/calendar/v3/calendars'
interface GCalMeta {
googleCalendarId: string
googleCalendarApiKey?: string
googleCalendarApiBase?: string,
extraParams?: Dictionary | (() => Dictionary)
}
let eventSourceDef: EventSourceDef<GCalMeta> = {
parseMeta(refined): GCalMeta | null {
let { googleCalendarId } = refined
if (!googleCalendarId && refined.url) {
googleCalendarId = parseGoogleCalendarId(refined.url)
}
if (googleCalendarId) {
return {
googleCalendarId,
googleCalendarApiKey: refined.googleCalendarApiKey,
googleCalendarApiBase: refined.googleCalendarApiBase,
extraParams: refined.extraParams,
}
}
return null
},
fetch(arg, onSuccess, onFailure) {
let { dateEnv, options } = arg.context
let meta: GCalMeta = arg.eventSource.meta
let apiKey = meta.googleCalendarApiKey || options.googleCalendarApiKey
if (!apiKey) {
onFailure({
message: 'Specify a googleCalendarApiKey. See http://fullcalendar.io/docs/google_calendar/',
})
} else {
let url = buildUrl(meta)
// TODO: make DRY with json-feed-event-source
let { extraParams } = meta
let extraParamsObj = typeof extraParams === 'function' ? extraParams() : extraParams
let requestParams = buildRequestParams(
arg.range,
apiKey,
extraParamsObj,
dateEnv,
)
requestJson('GET', url, requestParams, (body, xhr) => {
if (body.error) {
onFailure({
message: 'Google Calendar API: ' + body.error.message,
errors: body.error.errors,
xhr,
})
} else {
onSuccess({
rawEvents: gcalItemsToRawEventDefs(
body.items,
requestParams.timeZone,
),
xhr,
})
}
}, (message, xhr) => {
onFailure({ message, xhr })
})
}
},
}
function parseGoogleCalendarId(url) {
let match
// detect if the ID was specified as a single string.
// will match calendars like "asdf1234@calendar.google.com" in addition to person email calendars.
if (/^[^/]+@([^/.]+\.)*(google|googlemail|gmail)\.com$/.test(url)) {
return url
}
if (
(match = /^https:\/\/www.googleapis.com\/calendar\/v3\/calendars\/([^/]*)/.exec(url)) ||
(match = /^https?:\/\/www.google.com\/calendar\/feeds\/([^/]*)/.exec(url))
) {
return decodeURIComponent(match[1])
}
return null
}
function buildUrl(meta) {
let apiBase = meta.googleCalendarApiBase
if (!apiBase) {
apiBase = API_BASE
}
return apiBase + '/' + encodeURIComponent(meta.googleCalendarId) + '/events'
}
function buildRequestParams(range, apiKey: string, extraParams: Dictionary, dateEnv: DateEnv) {
let params
let startStr
let endStr
if (dateEnv.canComputeOffset) {
// strings will naturally have offsets, which GCal needs
startStr = dateEnv.formatIso(range.start)
endStr = dateEnv.formatIso(range.end)
} else {
// when timezone isn't known, we don't know what the UTC offset should be, so ask for +/- 1 day
// from the UTC day-start to guarantee we're getting all the events
// (start/end will be UTC-coerced dates, so toISOString is okay)
startStr = addDays(range.start, -1).toISOString()
endStr = addDays(range.end, 1).toISOString()
}
params = {
...(extraParams || {}),
key: apiKey,
timeMin: startStr,
timeMax: endStr,
singleEvents: true,
maxResults: 9999,
}
if (dateEnv.timeZone !== 'local') {
params.timeZone = dateEnv.timeZone
}
return params
}
function gcalItemsToRawEventDefs(items, gcalTimezone) {
return items.map((item) => gcalItemToRawEventDef(item, gcalTimezone))
}
function gcalItemToRawEventDef(item, gcalTimezone) {
let url = item.htmlLink || null
// make the URLs for each event show times in the correct timezone
if (url && gcalTimezone) {
url = injectQsComponent(url, 'ctz=' + gcalTimezone)
}
return {
id: item.id,
title: item.summary,
start: item.start.dateTime || item.start.date, // try timed. will fall back to all-day
end: item.end.dateTime || item.end.date, // same
url,
location: item.location,
description: item.description,
attachments: item.attachments || [],
extendedProps: (item.extendedProperties || {}).shared || {}
}
}
// Injects a string like "arg=value" into the querystring of a URL
// TODO: move to a general util file?
function injectQsComponent(url, component) {
// inject it after the querystring but before the fragment
return url.replace(
/(\?.*?)?(#|$)/,
(whole, qs, hash) => (qs ? qs + '&' : '?') + component + hash,
)
}
export default createPlugin({
eventSourceDefs: [eventSourceDef],
optionRefiners: OPTION_REFINERS,
eventSourceRefiners: EVENT_SOURCE_REFINERS,
})