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import * as filters from "./filters";
import HistoryRepository, { HistoryItem } from "../HistoryRepository";
import PrefetchAndCache from "./PrefetchAndCache";
const COMPLETION_ITEM_LIMIT = 10;
export default class CachedHistoryRepository implements HistoryRepository {
private historyCache: PrefetchAndCache<browser.history.HistoryItem>;
constructor() {
this.historyCache = new PrefetchAndCache(this.getter, this.filter, 10);
}
async queryHistories(keywords: string): Promise<HistoryItem[]> {
const items = await this.historyCache.get(keywords);
const filterOrKeep = <T>(
source: T[],
filter: (items: T[]) => T[],
min: number
): T[] => {
const filtered = filter(source);
if (filtered.length < min) {
return source;
}
return filtered;
};
return [items]
.map((items) =>
filterOrKeep(items, filters.filterByPathname, COMPLETION_ITEM_LIMIT)
)
.map((items) =>
filterOrKeep(items, filters.filterByOrigin, COMPLETION_ITEM_LIMIT)
)[0]
.sort((x, y) => Number(y.visitCount) - Number(x.visitCount))
.slice(0, COMPLETION_ITEM_LIMIT)
.map((item) => ({
title: item.title!,
url: item.url!,
}));
}
private async getter(
keywords: string
): Promise<browser.history.HistoryItem[]> {
const items = await browser.history.search({
text: keywords,
startTime: 0,
});
return [items]
.map(filters.filterBlankTitle)
.map(filters.filterHttp)
.map(filters.filterByTailingSlash)[0];
}
private filter(items: browser.history.HistoryItem[], query: string) {
return items.filter((item) => {
return query.split(" ").every((keyword) => {
return (
item.title!.toLowerCase().includes(keyword.toLowerCase()) ||
item.url!.includes(keyword)
);
});
});
}
}
|
