import { describe, expect, it } from "vitest";

import { migrateToolcraftPersistencePayload } from "./persistence-migrations";

describe("Toolcraft persistence migrations", () => {
  it("migrates every supported version in order", () => {
    const payload = {
      state: {
        panels: {
          controls: {
            collapsedSections: { appearance: true },
          },
        },
      },
      version: 1,
    };

    expect(migrateToolcraftPersistencePayload(payload, 2)).toEqual({
      fromVersion: 1,
      kind: "migrated",
      payload: {
        state: payload.state,
        version: 2,
      },
    });
  });

  it("preserves a newer unsupported payload", () => {
    const payload = {
      state: { values: { "appearance.opacity": 50 } },
      version: 3,
    };

    expect(migrateToolcraftPersistencePayload(payload, 2)).toEqual({
      kind: "newer-version",
      payload,
    });
  });

  it("rejects malformed and unsupported older payloads", () => {
    expect(migrateToolcraftPersistencePayload({ version: 1 }, 2)).toEqual({
      kind: "invalid",
    });
    expect(
      migrateToolcraftPersistencePayload({ state: {}, version: 0 }, 2),
    ).toEqual({
      kind: "unsupported-version",
      payload: { state: {}, version: 0 },
    });
  });
});