Files
mkdocs-material/src/assets/javascripts/workers/search/_/index.ts
2020-02-12 19:13:03 +01:00

117 lines
3.5 KiB
TypeScript

/*
* Copyright (c) 2016-2020 Martin Donath <martin.donath@squidfunk.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
import { Observable, Subject } from "rxjs"
import { ajax } from "rxjs/ajax"
import { distinctUntilKeyChanged, map, pluck } from "rxjs/operators"
import { SearchIndexOptions } from "modules"
import {
SearchQuery,
WorkerHandler,
watchWorker
} from "observables"
import {
SearchMessage,
SearchMessageType,
SearchQueryMessage,
SearchSetupMessage,
isSearchResultMessage
} from "../message"
/* ----------------------------------------------------------------------------
* Helper types
* ------------------------------------------------------------------------- */
/**
* Options
*/
interface Options {
base: string /* Base url */
query$: Observable<SearchQuery> /* Search query observable */
}
/* ----------------------------------------------------------------------------
* Functions
* ------------------------------------------------------------------------- */
/**
* Setup search web worker
*
* @param url - Worker url
* @param options - Options
*
* @return Worker handler
*/
export function setupSearchWorker(
url: string, { base, query$ }: Options
): WorkerHandler<SearchMessage> {
const worker = new Worker(url)
const prefix = new URL(base, location.href)
/* Create communication channels and correct relative links */
const tx$ = new Subject<SearchMessage>()
const rx$ = watchWorker(worker, { tx$ })
.pipe(
map(message => {
if (isSearchResultMessage(message)) {
for (const { article, sections } of message.data) {
article.location = `${prefix}/${article.location}`
for (const section of sections)
section.location = `${prefix}/${section.location}`
}
}
return message
})
)
/* Fetch index and setup search worker */
ajax({
url: `${base}/search/search_index.json`,
responseType: "json",
withCredentials: true
})
.pipe(
pluck("response"),
map<SearchIndexOptions, SearchSetupMessage>(data => ({
type: SearchMessageType.SETUP,
data
}))
)
.subscribe(tx$.next.bind(tx$))
/* Subscribe to search query */
query$
.pipe(
distinctUntilKeyChanged("value"),
map<SearchQuery, SearchQueryMessage>(query => ({
type: SearchMessageType.QUERY,
data: query.value
}))
)
.subscribe(tx$.next.bind(tx$))
/* Return worker handler */
return { tx$, rx$ }
}