import { spawnSync } from "node:child_process";
import { mkdtemp, readFile, rm } from "node:fs/promises";
import { tmpdir } from "node:os";
import path from "node:path";
import { describe, expect, it } from "vitest";

type RegistryDefinition = Readonly<{
  registryId: string;
  owner: string;
  requiredFields: string[];
  fieldTypes: Record<string, string>;
  path: string;
  exportName: string;
  rowsPath?: string;
  rowKeyFields?: string[];
  uniqueFields?: string[];
  uniqueFieldSets?: string[][];
  consumers?: Array<{ path: string; token: string }>;
  breakingFields?: string[];
}>;

describe("registry governance manifest", () => {
  it("declares eleven typed, single-owner executable registries", async () => {
    const governance = JSON.parse(
      await readFile("config/contracts/registry-governance.json", "utf8"),
    );
    const registries = governance.registries as RegistryDefinition[];
    expect(governance.registries).toHaveLength(11);
    expect(new Set(registries.map((entry) => entry.registryId)).size).toBe(
      11,
    );
    expect(registries.every((entry) => entry.owner)).toBe(true);
    expect(
      registries.every(
        (entry) =>
          Array.isArray(entry.requiredFields) &&
          entry.requiredFields.length > 0 &&
          entry.fieldTypes &&
          Object.keys(entry.fieldTypes).length > 0,
      ),
    ).toBe(true);
  });

  it("governs the installed invalidation graph and wire versions at their real exports", async () => {
    const governance = JSON.parse(
      await readFile("config/contracts/registry-governance.json", "utf8"),
    ) as { registries: RegistryDefinition[] };
    const byId = new Map(
      governance.registries.map((registry) => [registry.registryId, registry]),
    );

    expect(byId.get("FE-REG-QUERY-INVALIDATION")).toMatchObject({
      path: "src/features/installed-feature-contracts.ts",
      exportName: "INVALIDATION_REGISTRY",
      rowsPath: "edges",
      rowKeyFields: [
        "topicId",
        "namespace.namespaceId",
        "namespace.namespaceVersion",
      ],
      uniqueFieldSets: [
        [
          "topicId",
          "namespace.namespaceId",
          "namespace.namespaceVersion",
        ],
      ],
      consumers: [
        {
          path: "src/bootstrap/runtime-adapters.ts",
          token: "indexInvalidationRegistry(INVALIDATION_REGISTRY)",
        },
      ],
      breakingFields: [
        "topicId",
        "namespace.namespaceId",
        "namespace.namespaceVersion",
      ],
    });
    expect(byId.get("FE-REG-QUERY-INVALIDATION-TOPIC-VERSION")).toMatchObject({
      path: "src/features/installed-feature-contracts.ts",
      exportName: "INVALIDATION_TOPIC_VERSIONS",
      rowKeyFields: ["topicId"],
      uniqueFields: ["topicId"],
      consumers: [
        {
          path: "src/bootstrap/runtime-adapters.ts",
          token: "indexInvalidationTopicVersions(",
        },
      ],
      breakingFields: ["topicId", "topicVersion"],
    });
  });

  it("projects graph and array exports into deterministic governed rows", async () => {
    const directory = await mkdtemp(
      path.join(tmpdir(), "registry-governance-projection-"),
    );
    const artifact = path.join(directory, "registries.json");
    try {
      const result = spawnSync(
        process.execPath,
        [
          "scripts/check-registries.ts",
          "--governance",
          "tests/fixtures/registry/invalidation/governance.json",
          "--artifact",
          artifact,
          "--no-baseline",
        ],
        { encoding: "utf8" },
      );

      expect(result.status, result.stderr).toBe(0);
      const report = JSON.parse(await readFile(artifact, "utf8")) as {
        registries: Array<{ registryId: string; rows: Record<string, unknown> }>;
      };
      expect(
        report.registries.find(
          (registry) => registry.registryId === "FIXTURE-INVALIDATION-EDGES",
        )?.rows,
      ).toHaveProperty('["qinv.fixture.changed","orders",1]');
      expect(
        report.registries.find(
          (registry) => registry.registryId === "FIXTURE-INVALIDATION-EDGES",
        )?.rows,
      ).toHaveProperty('["orders","qinv.fixture.changed",1]');
      expect(
        report.registries.find(
          (registry) => registry.registryId === "FIXTURE-INVALIDATION-VERSIONS",
        )?.rows,
      ).toHaveProperty('["qinv.fixture.changed"]');
    } finally {
      await rm(directory, { recursive: true, force: true });
    }
  });

  it("rejects duplicate composite invalidation edges after projection", async () => {
    const directory = await mkdtemp(
      path.join(tmpdir(), "registry-governance-duplicate-"),
    );
    const artifact = path.join(directory, "registries.json");
    try {
      const result = spawnSync(
        process.execPath,
        [
          "scripts/check-registries.ts",
          "--governance",
          "tests/fixtures/registry/invalidation/duplicate-governance.json",
          "--artifact",
          artifact,
          "--no-baseline",
        ],
        { encoding: "utf8" },
      );

      expect(result.status).toBe(1);
      const report = JSON.parse(await readFile(artifact, "utf8")) as {
        failures: string[];
      };
      expect(report.failures).toEqual([
        expect.stringContaining(
          "duplicates topicId+namespace.namespaceId+namespace.namespaceVersion",
        ),
      ]);
    } finally {
      await rm(directory, { recursive: true, force: true });
    }
  });
});