import type { MigrationResult, ProjectRecord } from "./types";
import { getProjectId } from "./utils";

/**
 * v31 → v32 introduces the `projectVersions` store (named checkpoints +
 * auto-checkpoints; see notes/project-versioning.md). The store lives in its
 * own IndexedDB database created lazily by the versions adapter, so project
 * records need no shape change — this migration only stamps the new version.
 */
export function transformProjectV31ToV32({
	project,
}: {
	project: ProjectRecord;
}): MigrationResult<ProjectRecord> {
	if (!getProjectId({ project })) {
		return { project, skipped: true, reason: "no project id" };
	}

	const version = project.version;
	if (typeof version !== "number") {
		return { project, skipped: true, reason: "invalid version" };
	}
	if (version >= 32) {
		return { project, skipped: true, reason: "already v32" };
	}
	if (version !== 31) {
		return { project, skipped: true, reason: "not v31" };
	}

	return { project: { ...project, version: 32 }, skipped: false };
}