From 7bf0984698e43b9aa2dd879f65951318ed410390 Mon Sep 17 00:00:00 2001
From: Maze <167211895+mazeincoding@users.noreply.github.com>
Date: Sat, 31 Jan 2026 00:20:04 +0100
Subject: codebase overhaul (#697)

---
 apps/web/src/services/storage/migrations/runner.ts | 134 +++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 apps/web/src/services/storage/migrations/runner.ts

(limited to 'apps/web/src/services/storage/migrations/runner.ts')

diff --git a/apps/web/src/services/storage/migrations/runner.ts b/apps/web/src/services/storage/migrations/runner.ts
new file mode 100644
index 00000000..d9277cb0
--- /dev/null
+++ b/apps/web/src/services/storage/migrations/runner.ts
@@ -0,0 +1,134 @@
+import { IndexedDBAdapter } from "@/services/storage/indexeddb-adapter";
+import type { StorageMigration } from "./base";
+import { StorageVersionManager } from "./version-manager";
+
+export interface StorageMigrationResult {
+	fromVersion: number;
+	toVersion: number;
+	migrated: boolean;
+}
+
+export type StorageMigrationCallbacks = {
+	onMigrationStart?: ({
+		fromVersion,
+		toVersion,
+	}: {
+		fromVersion: number;
+		toVersion: number;
+	}) => void;
+	onMigrationComplete?: ({
+		fromVersion,
+		toVersion,
+	}: {
+		fromVersion: number;
+		toVersion: number;
+	}) => void;
+};
+
+type ProjectRecord = Record<string, unknown>;
+
+export async function runStorageMigrations({
+	migrations,
+	versionManager = new StorageVersionManager(),
+	callbacks,
+}: {
+	migrations: StorageMigration[];
+	versionManager?: StorageVersionManager;
+	callbacks?: StorageMigrationCallbacks;
+}): Promise<StorageMigrationResult> {
+	const versionRecord = await versionManager.getVersionRecord();
+	const inferredVersion = versionRecord
+		? null
+		: await inferStorageVersionFromProjects();
+	const fromVersion =
+		versionRecord?.inProgress?.from ??
+		versionRecord?.version ??
+		inferredVersion ??
+		0;
+
+	if (!versionRecord) {
+		await versionManager.setVersion({ version: fromVersion });
+	}
+
+	const orderedMigrations = [...migrations].sort((a, b) => a.from - b.from);
+	let currentVersion = fromVersion;
+
+	for (const migration of orderedMigrations) {
+		if (migration.from !== currentVersion) {
+			continue;
+		}
+
+		await versionManager.setInProgress({
+			from: migration.from,
+			to: migration.to,
+		});
+		callbacks?.onMigrationStart?.({
+			fromVersion: migration.from,
+			toVersion: migration.to,
+		});
+		await migration.run();
+		currentVersion = migration.to;
+		await versionManager.setVersion({ version: currentVersion });
+		await versionManager.clearInProgress();
+		callbacks?.onMigrationComplete?.({
+			fromVersion: migration.from,
+			toVersion: migration.to,
+		});
+	}
+
+	return {
+		fromVersion,
+		toVersion: currentVersion,
+		migrated: currentVersion !== fromVersion,
+	};
+}
+
+async function inferStorageVersionFromProjects(): Promise<number> {
+	const projectsAdapter = new IndexedDBAdapter<unknown>(
+		"video-editor-projects",
+		"projects",
+		1,
+	);
+	const projects = await projectsAdapter.getAll();
+
+	if (projects.length === 0) {
+		return 0;
+	}
+
+	let lowestVersion = Number.POSITIVE_INFINITY;
+
+	for (const project of projects) {
+		const projectVersion = checkProjectVersion({ project });
+		if (projectVersion < lowestVersion) {
+			lowestVersion = projectVersion;
+		}
+	}
+
+	if (lowestVersion === Number.POSITIVE_INFINITY) {
+		return 0;
+	}
+
+	return lowestVersion;
+}
+
+function checkProjectVersion({ project }: { project: unknown }): number {
+	if (!isRecord(project)) {
+		return 0;
+	}
+
+	const versionValue = project.version;
+	if (typeof versionValue === "number") {
+		return versionValue;
+	}
+
+	const scenesValue = project.scenes;
+	if (Array.isArray(scenesValue) && scenesValue.length > 0) {
+		return 1;
+	}
+
+	return 0;
+}
+
+function isRecord(value: unknown): value is ProjectRecord {
+	return typeof value === "object" && value !== null;
+}
-- 
cgit v1.3.1