import { createRegistry } from "@suaveplan/schema-registry";
import { describe, expect, it } from "@suaveplan/testing/runner";
import {
    PACKER_CHUNK_FORMAT_V1,
    PACKER_SUBJECTS,
    registerPackerSchemas,
} from "./registration.js";

describe("registerPackerSchemas", () => {
    it("registers every option schema as a subject with formatVersion 1 metadata", {
        timeout: 5000,
    }, () => {
        const registry = createRegistry();
        const reg = registerPackerSchemas(registry);
        expect(reg.PackerOptions.metadata?.formatVersion).toBe("1");
        expect(reg.UnpackOptions.metadata?.formatVersion).toBe("1");
        expect(reg.ChunkedPackerOptions.metadata?.formatVersion).toBe("1");
        expect(reg.Manifest.metadata?.formatVersion).toBe("1");
        const subs = registry.listSubjects().sort();
        expect(subs).toEqual([...PACKER_SUBJECTS].sort());
    });

    it("records packer-chunk-format V1 with binary encoding and BACKWARD compatibility", {
        timeout: 5000,
    }, () => {
        const registry = createRegistry();
        registerPackerSchemas(registry);
        const latest = registry.getLatest("packer-chunk-format");
        expect(latest.metadata?.formatVersion).toBe("1");
        expect(latest.metadata?.encoding).toBe("binary");
        expect(latest.format).toBe("custom");
        // A second registration of the IDENTICAL V1 descriptor must
        // succeed under the registry's BACKWARD default.
        const compat = registry.checkCompatibility(
            "packer-chunk-format",
            PACKER_CHUNK_FORMAT_V1,
            "custom"
        );
        expect(compat.compatible).toBe(true);
    });

    it("PACKER_CHUNK_FORMAT_V1 is a frozen V1 binary descriptor", {
        timeout: 5000,
    }, () => {
        expect(Object.isFrozen(PACKER_CHUNK_FORMAT_V1)).toBe(true);
        expect(PACKER_CHUNK_FORMAT_V1.formatVersion).toBe(1);
        expect(PACKER_CHUNK_FORMAT_V1.headerSize).toBe(164);
        expect(PACKER_CHUNK_FORMAT_V1.aead).toBe("xchacha20-poly1305");
        expect(PACKER_CHUNK_FORMAT_V1.signature).toBe("ed25519");
    });
});