import { describe, expect, test } from "bun:test";

import type { WorkbenchApplication, WorkbenchTemporalGateway } from "./contracts.ts";
import { createWorkbenchDispatcher } from "./dispatcher.ts";
import { createCloudWorkbenchApplication } from "./cloud-application.ts";
import { createWorkbenchHttpApp } from "./http.ts";
import { runWorkbenchCli } from "../../tools/src/workbench-cli.ts";

describe("Workbench dispatcher", () => {
  test("submits through Temporal without synthesizing terminal state", async () => {
    const calls: string[] = [];
    const application: WorkbenchApplication = {
      async health() { return { status: "ready" }; },
      async createSession() { return { session: { sessionId: "ses_test" } }; },
      async admitTurn(input) { calls.push("admit"); return input; },
      async dispatchTurn() { throw new Error("API dispatcher must not dispatch directly"); },
      async cancelTurn() { throw new Error("API dispatcher must not cancel directly"); }
    };
    const temporal: WorkbenchTemporalGateway = {
      async submit(input) { calls.push("temporal"); return { workflowId: `workbench-turn-${input.traceId}`, workflowRunId: "run-1", reused: false }; },
      async cancel() { return { workflowId: "cancel", workflowRunId: "run-2", reused: false }; },
      async close() {}
    };
    const dispatch = createWorkbenchDispatcher({ application, temporal, mode: "temporal" });
    const result = await dispatch({ operation: "turn.submit", actor: { id: "usr_test" }, traceId: "trc_test", params: { sessionId: "ses_test", message: "hi" } });
    expect(calls).toEqual(["admit", "temporal"]);
    expect(result).toMatchObject({ ok: true, mode: "temporal", data: { status: "running", traceId: "trc_test", terminalAuthority: "hwlab.event.v1", resultSynthesized: false } });
  });

  test("cancel is a durable Temporal command", async () => {
    const application = stubApplication();
    const temporal: WorkbenchTemporalGateway = {
      async submit() { throw new Error("not used"); },
      async cancel(input) { return { workflowId: `workbench-cancel-${input.traceId}`, workflowRunId: "run-cancel", reused: false }; },
      async close() {}
    };
    const result = await createWorkbenchDispatcher({ application, temporal, mode: "temporal" })({ operation: "turn.cancel", actor: { id: "usr_test" }, traceId: "trc_test" });
    expect(result).toMatchObject({ ok: true, data: { status: "cancel_requested", resultSynthesized: false } });
  });
});

describe("Workbench Cloud application adapter", () => {
  test("persists admission before dispatch through distinct internal routes", async () => {
    const calls: Array<{ path: string; authorization: string | null }> = [];
    const application = createCloudWorkbenchApplication({
      baseUrl: "http://cloud.internal",
      authorization: "unified-internal-key",
      fetchImpl: (async (url: string | URL | Request, init?: RequestInit) => {
        calls.push({ path: new URL(String(url)).pathname, authorization: new Headers(init?.headers).get("authorization") });
        return Response.json({ ok: true, accepted: true, status: "admitted" });
      }) as typeof fetch
    });
    const input = { actor: { id: "usr_test" }, traceId: "trc_test", sessionId: "ses_test", params: { sessionId: "ses_test", message: "hi" } };
    await application.admitTurn(input);
    await application.dispatchTurn(input);
    expect(calls).toEqual([
      { path: "/v1/internal/workbench/admit", authorization: "unified-internal-key" },
      { path: "/v1/agent/chat", authorization: "unified-internal-key" }
    ]);
  });
});

describe("Workbench native HTTP adapter", () => {
  test("authorizes only the Workbench navigation entry", async () => {
    const app = createWorkbenchHttpApp({
      async dispatch() { return { ok: true }; },
      async snapshot() { return { sessions: {}, turns: {} }; }
    });

    for (const path of ["/auth/session", "/auth/bootstrap"]) {
      const response = await app.fetch(new Request(`http://native.test${path}`));
      expect(response.status).toBe(200);
      expect(await response.json()).toMatchObject({
        authenticated: true,
        access: { nav: { profileId: "workbench-native", allowedIds: ["workbench.code"] } }
      });
    }
  });

  test("serves read-only empty states for Workbench auxiliary panels", async () => {
    const app = createWorkbenchHttpApp({
      async dispatch() { return { ok: true }; },
      async snapshot() { return { sessions: {}, turns: {} }; }
    });

    for (const path of ["/v1/caserun/cases", "/v1/hwpod/specs?probe=1", "/v1/hwpod-node-ops"]) {
      const response = await app.fetch(new Request(`http://native.test${path}`));
      expect(response.status).toBe(200);
      expect(await response.json()).toMatchObject({ ok: true, status: "unavailable", mode: "native-test" });
    }
    const performance = await app.fetch(new Request("http://native.test/v1/web-performance", { method: "POST", body: "{}" }));
    expect(performance.status).toBe(202);
    expect(await performance.json()).toMatchObject({ ok: true, status: "accepted", persisted: false, mode: "native-test" });
  });

  test("L0 CLI observes AgentRun-derived events only through the Kafka SSE route", async () => {
    const subscribers = new Set<(envelope: any) => void>();
    const bridge = {
      capabilities: { liveKafkaSse: true },
      ready: Promise.resolve(),
      subscribeLiveHwlabEvents(listener: (envelope: any) => void) { subscribers.add(listener); return () => subscribers.delete(listener); }
    };
    const app = createWorkbenchHttpApp({
      mode: "agentrun-native",
      kafkaEventBridge: bridge,
      async dispatch() { return { ok: true }; },
      async snapshot() { return { sessions: {}, turns: {} }; }
    });
    const server = Bun.serve({ port: 0, fetch: (request) => app.fetch(request) });
    try {
      const pending = runWorkbenchCli([
        "events", "inspect",
        "--session-id", "ses_l0_sse",
        "--trace-id", "trc_l0_sse",
        "--over-api",
        "--api-url", `http://127.0.0.1:${server.port}`,
        "--timeout-ms", "1000"
      ], {});
      for (let index = 0; index < 20 && subscribers.size === 0; index += 1) await Bun.sleep(5);
      for (const listener of subscribers) listener({ schema: "hwlab.event.v1", sessionId: "ses_l0_sse", traceId: "trc_l0_sse", event: { type: "backend", eventType: "backend", label: "agentrun:backend:command-created" } });
      expect(await pending).toMatchObject({ ok: true, operation: "events.inspect", connected: true, eventCount: 1, eventTypes: ["backend"] });
    } finally {
      server.stop(true);
      await app.close();
    }
  });

  test("L0 CLI waits for explicit Kafka event semantics in one SSE window", async () => {
    const subscribers = new Set<(envelope: any) => void>();
    const bridge = {
      capabilities: { liveKafkaSse: true },
      ready: Promise.resolve(),
      subscribeLiveHwlabEvents(listener: (envelope: any) => void) { subscribers.add(listener); return () => subscribers.delete(listener); }
    };
    const app = createWorkbenchHttpApp({
      mode: "agentrun-native",
      kafkaEventBridge: bridge,
      async dispatch() { return { ok: true }; },
      async snapshot() { return { sessions: {}, turns: {} }; }
    });
    const server = Bun.serve({ port: 0, fetch: (request) => app.fetch(request) });
    try {
      const pending = runWorkbenchCli([
        "events", "inspect",
        "--session-id", "ses_l0_semantics",
        "--trace-id", "trc_l0_semantics",
        "--over-api",
        "--api-url", `http://127.0.0.1:${server.port}`,
        "--timeout-ms", "1000",
        "--wait-for", "user,backend,assistant,terminal,final"
      ], {});
      for (let index = 0; index < 20 && subscribers.size === 0; index += 1) await Bun.sleep(5);
      const events = [
        { type: "user", eventType: "user" },
        { type: "backend", eventType: "backend" },
        { type: "assistant", eventType: "assistant", final: true, replyAuthority: true, finalResponse: { text: "done" } },
        { type: "result", eventType: "terminal", terminal: true, terminalStatus: "completed", status: "completed" }
      ];
      for (const event of events) {
        for (const listener of subscribers) listener({ schema: "hwlab.event.v1", sessionId: "ses_l0_semantics", traceId: "trc_l0_semantics", event });
      }
      expect(await pending).toMatchObject({
        ok: true,
        eventCount: 4,
        eventTypes: ["user", "backend", "assistant", "terminal"],
        waitFor: ["user", "backend", "assistant", "terminal", "final"],
        observedSemantics: ["user", "backend", "assistant", "terminal", "final"],
        missingSemantics: [],
        semanticCounts: { user: 1, backend: 1, assistant: 1, terminal: 1, final: 1 },
        terminalStatuses: ["completed"]
      });
    } finally {
      server.stop(true);
      await app.close();
    }
  });

  test("L0 CLI reports missing Kafka event semantics on timeout", async () => {
    const subscribers = new Set<(envelope: any) => void>();
    const app = createWorkbenchHttpApp({
      mode: "agentrun-native",
      kafkaEventBridge: {
        capabilities: { liveKafkaSse: true },
        ready: Promise.resolve(),
        subscribeLiveHwlabEvents(listener: (envelope: any) => void) { subscribers.add(listener); return () => subscribers.delete(listener); }
      },
      async dispatch() { return { ok: true }; },
      async snapshot() { return { sessions: {}, turns: {} }; }
    });
    const server = Bun.serve({ port: 0, fetch: (request) => app.fetch(request) });
    try {
      const pending = runWorkbenchCli([
        "events", "inspect",
        "--trace-id", "trc_l0_missing_terminal",
        "--over-api",
        "--api-url", `http://127.0.0.1:${server.port}`,
        "--timeout-ms", "50",
        "--wait-for", "assistant,terminal"
      ], {});
      for (let index = 0; index < 20 && subscribers.size === 0; index += 1) await Bun.sleep(2);
      for (const listener of subscribers) listener({ schema: "hwlab.event.v1", traceId: "trc_l0_missing_terminal", event: { type: "assistant", eventType: "assistant" } });
      expect(await pending).toMatchObject({
        ok: false,
        status: "event-timeout",
        observedSemantics: ["assistant"],
        missingSemantics: ["terminal"],
        terminalStatuses: [],
        error: { code: "workbench_kafka_sse_event_missing" }
      });
    } finally {
      server.stop(true);
      await app.close();
    }
  });

  test("L0 SSE exposes Kafka startup failure without waiting for a read model", async () => {
    const startupError = Object.assign(new Error("Kafka broker unavailable"), { code: "kafka_broker_unavailable" });
    const response = await createWorkbenchHttpApp({
      mode: "agentrun-native",
      kafkaEventBridge: {
        capabilities: { liveKafkaSse: true },
        liveReady: Promise.reject(startupError),
        subscribeLiveHwlabEvents() { return () => {}; }
      },
      async dispatch() { return { ok: true }; },
      async snapshot() { return { sessions: {}, turns: {} }; }
    }).fetch(new Request("http://localhost/v1/workbench/events?traceId=trc_l0_kafka_error"));
    expect(response.status).toBe(200);
    const body = await response.text();
    expect(body).toContain("event: workbench.connected");
    expect(body).toContain("event: workbench.error");
    expect(body).toContain("kafka_broker_unavailable");
  });
});

function stubApplication(): WorkbenchApplication {
  return {
    async health() { return {}; },
    async createSession() { return {}; },
    async admitTurn(input) { return input; },
    async dispatchTurn() { return {}; },
    async cancelTurn() { return {}; }
  };
}