External streams

app/features/admin/ExternalStreamRepository.server.ts

@@ -0,0 +1,80 @@
+import { db } from "~/db/sql";
+import type { TablesInsertable } from "~/db/tables";
+import { databaseTimestampNow } from "~/utils/dates";
+import { concatUserSubmittedImagePrefix } from "~/utils/kysely.server";
+
+/** Number of seconds an external stream keeps showing in the sidebar after its start time. */
+const SIDEBAR_VISIBLE_SECONDS = 6 * 60 * 60;
+/** Number of seconds after the start time before an external stream row is deleted. */
+const RETENTION_SECONDS = 24 * 60 * 60;
+
+/** Inserts a new admin-curated external stream. */
+export function insert(
+	args: Pick<
+		TablesInsertable["ExternalStream"],
+		"name" | "url" | "avatarImgId" | "startTime"
+	>,
+) {
+	return db.insertInto("ExternalStream").values(args).execute();
+}
+
+/** Deletes an external stream by its id. */
+export function deleteById(id: number) {
+	return db.deleteFrom("ExternalStream").where("id", "=", id).execute();
+}
+
+/** Lists all external streams (for the admin management page), soonest start time first. */
+export function all() {
+	return db
+		.selectFrom("ExternalStream")
+		.leftJoin(
+			"UserSubmittedImage",
+			"UserSubmittedImage.id",
+			"ExternalStream.avatarImgId",
+		)
+		.select((eb) => [
+			"ExternalStream.id",
+			"ExternalStream.name",
+			"ExternalStream.url",
+			"ExternalStream.startTime",
+			concatUserSubmittedImagePrefix(eb.ref("UserSubmittedImage.url")).as(
+				"avatarUrl",
+			),
+		])
+		.orderBy("ExternalStream.startTime", "asc")
+		.execute();
+}
+
+/** External streams that should currently show in the sidebar (started under 6h ago or upcoming). */
+export function forSidebar() {
+	return db
+		.selectFrom("ExternalStream")
+		.leftJoin(
+			"UserSubmittedImage",
+			"UserSubmittedImage.id",
+			"ExternalStream.avatarImgId",
+		)
+		.select((eb) => [
+			"ExternalStream.id",
+			"ExternalStream.name",
+			"ExternalStream.url",
+			"ExternalStream.startTime",
+			concatUserSubmittedImagePrefix(eb.ref("UserSubmittedImage.url")).as(
+				"avatarUrl",
+			),
+		])
+		.where(
+			"ExternalStream.startTime",
+			">=",
+			databaseTimestampNow() - SIDEBAR_VISIBLE_SECONDS,
+		)
+		.execute();
+}
+
+/** Deletes external streams whose start time is more than 24h in the past. */
+export function deleteOld() {
+	return db
+		.deleteFrom("ExternalStream")
+		.where("startTime", "<", databaseTimestampNow() - RETENTION_SECONDS)
+		.executeTakeFirst();
+}