// Chains through place ID.
starPage(url, session, action, now = microtime.now()) {
const result = datascript.core.transact_BANG_(this.conn, vector(
vector(DB_ADD, -1, 'page/url', url)
));
// TODO
return datascript.core.resolve_tempid(result.tempids, -1);
}
async startSession(scope, ancestor, now = microtime.now(), reason = SessionStartReason.newTab) {
const result = datascript.core.transact_BANG_(this.conn, vector(
vector(DB_ADD, -1, 'session/startedInScope', `${scope}`),
vector(DB_ADD, -1, 'session/startedFromAncestor', ancestor),
vector(DB_ADD, -1, 'session/startReason', reason),
vector(DB_ADD, -1, 'session/startTime', now)
));
return datascript.core.resolve_tempid(result.tempids, -1);
}
/**
* Record a visit to a URL.
* @param url the visited URL.
* @param title (optional) a known title for the page.
* @param now (optional) microsecond timestamp.
* @returns {Promise} a promise that resolves to the place ID.
*/
visit(url, session, title, now = microtime.now()) {
const result = datascript.core.transact_BANG_(this.conn, vector(
vector(DB_ADD, -1, 'page/url', url),
vector(DB_ADD, -1, 'page/title', title), // TODO: handle no title.
vector(DB_ADD, -1, 'event/visit', -2),
vector(DB_ADD, -2, 'visit/instant', now)
));
// TODO: session.
return datascript.core.resolve_tempid(result.tempids, -1);
}
someStuff() {
datascript.core.transact_BANG_(this.conn, vector(
vector(DB_ADD, -1, 'page/url', 'http://foo.com/'),
vector(DB_ADD, -1, 'page/title', 'Foo.com')
));
const query = parse(`
[:find ?title :in $ ?url :where [?x "page/url" ?url] [?x "page/title" ?title]]
`);
let results = datascript.core.q(query, datascript.js.db(this.conn), 'http://foo.com/');
console.log(results);
datascript.core.transact_BANG_(this.conn, vector(
vector(DB_ADD, -1, 'page/url', 'http://foo.com/'),
vector(DB_ADD, -1, 'page/title', 'Foo.com Again')
));
results = datascript.core.q(query, datascript.js.db(this.conn), 'http://foo.com/');
console.log(results);
return results;
}
async getStarredWithOrderByAndLimit(newestFirst, limit) {
const starredQuery = parse(`
[:find (max ?timestampMicros) (pull ?page ["page/url" "page/title"]) ?page
:in $
:where
[?page "page/starred" true ?t]
[?t ":db/txInstant" ?timestampMicros]
]`);
const results = datascript.core.q(starredQuery, this.getDB());
const sorted = newestFirst ? mori.sortBy(mori.first, compareDescending, results) : results;
const limited = limit ? mori.take(limit, sorted) : sorted;
return mori.map(this.pageResultToJSON, limited);
}
constructor(dir) {
this.dir = dir;
const schema = this.createSchema();
this.conn = datascript.core.create_conn(schema);
this.schema = schema;
this.pageDetailsQuery = parse(`
[:find (max ?timestamp) (pull ?page ["page/url" "page/title"]) ?page
:in $ ?visits
:where
[(ground ?visits) [[?ev]]]
[?page "event/visit" ?ev]
[?ev _ ?timestamp]]
`);
}
constructor(dir) {
this.dir = dir;
const schema = this.createSchema();
this.conn = datascript.core.create_conn(schema);
this.schema = schema;
}
getVisits(since = null) {
const db = datascript.core.db(this.conn);
return datascript.core.index_range(db, 'visit/instant', since, null);
}
async endSession(session, now = microtime.now(), reason = SessionEndReason.tabClosed) {
return datascript.core.transact_BANG_(this.conn, vector(
vector(DB_ADD, session, 'session/endReason', reason),
vector(DB_ADD, session, 'session/endTime', now)
));
}
getPageDetails(visits) {
const query = this.pageDetailsQuery;
const results = datascript.core.q(query, this.getDB(), visits);
const sorted = mori.sortBy(mori.first, compareDescending, results);
return mori.map(this.pageResultToJSON, sorted);
}
getVisits(since = null) {
return mori.reverse(
datascript.core.index_range(
this.getDB(), 'visit/instant', since, null));
}
transact(assertions) {
return datascript.core.transact_BANG_(this.conn, assertions);
}
getDB() {
return datascript.core.db(this.conn);
}