import { afterEach, beforeEach, describe, expect, it } from "bun:test";
import { mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";

import { ConversationStore } from "../../src/conversations/store.js";
import { ResultReferenceResolver } from "../../src/results/resolver.js";
import {
  RESULT_REFERENCE_KIND,
  RESULT_REFERENCE_SOURCE,
  ResultReferenceStore,
} from "../../src/results/store.js";
import { createTestDatabase } from "../helpers/postgres.js";

describe("ResultReferenceResolver", () => {
  let payloadDir: string;
  let conversationStore: ConversationStore;
  let store: ResultReferenceStore;
  let resolver: ResultReferenceResolver;
  let dispose: (() => Promise<void>) | undefined;

  beforeEach(async () => {
    payloadDir = await mkdtemp(join(tmpdir(), "tjwater-result-ref-"));
    const testDb = await createTestDatabase();
    conversationStore = new ConversationStore(testDb.db);
    store = new ResultReferenceStore(testDb.db, payloadDir, 60_000);
    resolver = new ResultReferenceResolver(store);
    dispose = async () => {
      await testDb.dispose();
      await rm(payloadDir, { force: true, recursive: true });
    };
    await Promise.all([conversationStore.initialize(), store.initialize()]);
  });

  afterEach(async () => {
    await dispose?.();
  });

  it("stores referenced results as metadata plus an external payload file", async () => {
    await conversationStore.ensure({
      actorKey: "actor-1",
      projectId: "project-1",
      projectKey: "project-key-1",
      sessionId: "client-1",
      userId: "user-1",
    });

    const record = await resolver.register({
      actorKey: "actor-1",
      data: [{ id: "J1" }, { id: "J2" }],
      kind: RESULT_REFERENCE_KIND.dynamicHttpResult,
      projectId: "project-1",
      projectKey: "project-key-1",
      schemaVersion: 1,
      sessionId: "client-1",
      source: RESULT_REFERENCE_SOURCE.dynamicHttp,
      traceId: "trace-1",
    });

    expect(record.payloadPath).toContain("/payloads/");
    const payload = JSON.parse(await readFile(record.payloadPath!, "utf8")) as {
      data?: unknown;
    };
    expect(payload.data).toEqual([{ id: "J1" }, { id: "J2" }]);

    const result = await resolver.getAuthorized(
      record.resultRef,
      {
        actorKey: "actor-1",
        projectId: "project-1",
      },
      {
        maxItems: 1,
      },
    );

    expect(result?.kind).toBe(RESULT_REFERENCE_KIND.dynamicHttpResult);
    expect(result?.source).toBe(RESULT_REFERENCE_SOURCE.dynamicHttp);
    expect(result?.data).toEqual([{ id: "J1" }]);
  });

  it("reuses an existing external render payload file as the payload locator", async () => {
    await conversationStore.ensure({
      actorKey: "actor-3",
      projectId: "project-3",
      projectKey: "project-key-3",
      sessionId: "client-3",
      userId: "user-3",
    });

    const filePath = join(payloadDir, "render-wrapper.json");
    await writeFile(
      filePath,
      JSON.stringify(
        {
          metadata: {
            createdAt: "2026-05-21T00:00:00.000Z",
            projectId: "project-3",
          },
          location: {
            file_path: filePath,
          },
          data: {
            node_area_map: {
              J1: "DMA-1",
              J2: 2,
            },
            area_ids: ["DMA-1", " DMA-2 "],
          },
        },
        null,
        2,
      ),
      "utf8",
    );

    const record = await resolver.registerRenderPayloadFile(filePath, {
      actorKey: "actor-3",
      projectId: "project-3",
      projectKey: "project-key-3",
      sessionId: "client-3",
      source: RESULT_REFERENCE_SOURCE.migration,
      traceId: "trace-3",
    });

    expect(record.payloadPath).toBe(filePath);

    const result = await resolver.getFullAuthorized(
      record.resultRef,
      {
        actorKey: "actor-3",
        projectId: "project-3",
        sessionId: "client-3",
      },
      {
        expectedKind: RESULT_REFERENCE_KIND.renderJunctionsPayload,
      },
    );

    expect(result?.data).toEqual({
      node_area_map: {
        J1: "DMA-1",
        J2: "2",
      },
      area_ids: ["DMA-1", "DMA-2"],
    });
  });
});