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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| import { loadScript } from './entrypoints/external-scripts-loader' | ||
| import { PostHog } from './posthog-core' | ||
| import { CaptureResult, DecideResponse } from './types' | ||
| import { assignableWindow } from './utils/globals' | ||
| import { logger } from './utils/logger' | ||
|
|
||
| export class SiteApps { | ||
| instance: PostHog | ||
| enabled: boolean | ||
| missedInvocations: Record<string, any>[] | ||
| loaded: boolean | ||
| appsLoading: Set<string> | ||
|
|
||
| constructor(instance: PostHog) { | ||
| this.instance = instance | ||
| // can't use if site apps are disabled, or if we're not asking /decide for site apps | ||
| this.enabled = !!this.instance.config.opt_in_site_apps && !this.instance.config.advanced_disable_decide | ||
| // events captured between loading posthog-js and the site app; up to 1000 events | ||
| this.missedInvocations = [] | ||
| // capture events until loaded | ||
| this.loaded = false | ||
| this.appsLoading = new Set() | ||
| } | ||
|
|
||
| eventCollector(_eventName: string, eventPayload?: CaptureResult | undefined) { | ||
| if (!this.enabled) { | ||
| return | ||
| } | ||
| if (!this.loaded && eventPayload) { | ||
| const globals = this.globalsForEvent(eventPayload) | ||
| this.missedInvocations.push(globals) | ||
| if (this.missedInvocations.length > 1000) { | ||
| this.missedInvocations = this.missedInvocations.slice(990) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| init() { | ||
| this.instance?._addCaptureHook(this.eventCollector.bind(this)) | ||
| } | ||
|
|
||
| globalsForEvent(event: CaptureResult): Record<string, any> { | ||
| if (!event) { | ||
| throw new Error('Event payload is required') | ||
| } | ||
| const groups: Record<string, Record<string, any>> = {} | ||
| const groupIds = this.instance.get_property('$groups') || [] | ||
| const groupProperties = this.instance.get_property('$stored_group_properties') || {} | ||
| for (const [type, properties] of Object.entries(groupProperties)) { | ||
| groups[type] = { id: groupIds[type], type, properties } | ||
| } | ||
| const { $set_once, $set, ..._event } = event | ||
| const globals = { | ||
| event: { | ||
| ..._event, | ||
| properties: { | ||
| ...event.properties, | ||
| ...($set ? { $set: { ...(event.properties?.$set ?? {}), ...$set } } : {}), | ||
| ...($set_once ? { $set_once: { ...(event.properties?.$set_once ?? {}), ...$set_once } } : {}), | ||
| }, | ||
| elements_chain: event.properties?.['$elements_chain'] ?? '', | ||
| // TODO: | ||
| // - elements_chain_href: '', | ||
| // - elements_chain_texts: [] as string[], | ||
| // - elements_chain_ids: [] as string[], | ||
| // - elements_chain_elements: [] as string[], | ||
| distinct_id: event.properties?.['distinct_id'], | ||
| }, | ||
| person: { | ||
| properties: this.instance.get_property('$stored_person_properties'), | ||
| }, | ||
| groups, | ||
| } | ||
| return globals | ||
| } | ||
|
|
||
| loadSiteApp(posthog: PostHog, url: string, callback: (error?: string | Event, event?: Event) => void) { | ||
| const scriptUrl = posthog.requestRouter.endpointFor('api', url) | ||
| loadScript(posthog, scriptUrl, callback) | ||
| } | ||
|
|
||
| afterDecideResponse(response?: DecideResponse): void { | ||
| if (response?.['siteApps']) { | ||
| if (this.enabled && this.instance.config.opt_in_site_apps) { | ||
| const checkIfAllLoaded = () => { | ||
| // Stop collecting events once all site apps are loaded | ||
| if (this.appsLoading.size === 0) { | ||
| this.loaded = true | ||
| this.missedInvocations = [] | ||
| } | ||
| } | ||
| for (const { id, url } of response['siteApps']) { | ||
| this.appsLoading.add(id) | ||
| assignableWindow[`__$$ph_site_app_${id}_posthog`] = this.instance | ||
| assignableWindow[`__$$ph_site_app_${id}_missed_invocations`] = () => this.missedInvocations | ||
| assignableWindow[`__$$ph_site_app_${id}_callback`] = () => { | ||
| this.appsLoading.delete(id) | ||
| checkIfAllLoaded() | ||
| } | ||
| this.loadSiteApp(this.instance, url, (err) => { | ||
| if (err) { | ||
| this.appsLoading.delete(id) | ||
| checkIfAllLoaded() | ||
| return logger.error(`Error while initializing PostHog app with config id ${id}`, err) | ||
| } | ||
| }) | ||
| } | ||
| } else if (response['siteApps'].length > 0) { | ||
| logger.error('PostHog site apps are disabled. Enable the "opt_in_site_apps" config to proceed.') | ||
| } | ||
| } else { | ||
| this.loaded = true | ||
| this.enabled = false | ||
| } | ||
| } | ||
|
|
||
| // TODO: opting out of stuff should disable this | ||
| } |
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