Madison Grubb
aa8a0bd83f
Ingest aircraft and vessel tracks via OSINT feeds and tactical CoT, expose viewport-filtered SSE to the map, and add an OSM ALPR layer with tiled caching and performant marker sync.
46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
import { createEventStream } from 'h3'
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import { requireAuth } from '../../utils/authHelpers.js'
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import { getActiveEntitiesInBbox } from '../../utils/cotStore.js'
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import { registerSubscriber } from '../../utils/cotSubscribers.js'
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import { getCotSnapshotOpts } from '../../utils/cotSnapshot.js'
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import { COT_SSE_HEARTBEAT_MS } from '../../utils/constants.js'
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import { parseBboxParam, parseLayersParam } from '../../utils/cotEntityUtils.js'
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import { scheduleTrackingFeedRefresh } from '../../utils/trackingFeed.js'
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export default defineEventHandler((event) => {
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requireAuth(event)
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const query = getQuery(event)
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const bbox = parseBboxParam(typeof query.bbox === 'string' ? query.bbox : undefined)
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const layers = parseLayersParam(typeof query.layers === 'string' ? query.layers : undefined)
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const snapshotOpts = getCotSnapshotOpts()
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const stream = createEventStream(event)
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const push = (eventName, data) => stream.push({ event: eventName, data })
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const sendSnapshot = async () => {
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const entities = await getActiveEntitiesInBbox(bbox, { ...snapshotOpts, layers })
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await push('snapshot', JSON.stringify({ entities }))
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}
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const unregister = registerSubscriber({ bbox, layers, push })
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let heartbeat
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stream.onClosed(async () => {
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clearInterval(heartbeat)
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unregister()
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scheduleTrackingFeedRefresh()
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})
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void (async () => {
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scheduleTrackingFeedRefresh()
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await sendSnapshot()
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heartbeat = setInterval(() => {
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push('heartbeat', '{}').catch(() => {})
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}, COT_SSE_HEARTBEAT_MS)
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})()
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return stream.send()
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})
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