/**
 * E2E Smoke Test Suite for Showcase Integrations
 *
 * Tests the full path: Railway backend -> AG-UI protocol -> CopilotKit runtime -> frontend response
 *
 * Levels:
 *   1. @health  - Backend health endpoint returns 200
 *   2. @agent   - Agent endpoint is reachable (not 404)
 *   3. @chat    - Round-trip chat: send message, get assistant response
 *   4. @tools   - Tool rendering: trigger a tool, verify UI result
 *
 * Run all:     npx playwright test
 * Run level:   npx playwright test --grep @health
 * Run one:     npx playwright test --grep "langgraph-python"
 */

import { test, expect } from "@playwright/test";
import { checkHealth, checkAgentEndpoint, sendChatMessage } from "./helpers";
// Generated by showcase/scripts/generate-registry.ts — must run `npm run build`
// in showcase/shell (or run the generator directly) before this test can import the file.
import registry from "../../shell/src/data/registry.json";
import localPorts from "../../shared/local-ports.json";

// LOCAL_PORTS=1 rewrites Railway backend URLs to http://localhost:<port>
// using showcase/shared/local-ports.json. Lets smoke run against the
// docker-compose.local.yml stack instead of Railway. Starters are skipped
// because they're not represented in local-ports.json (local dev only
// targets the 17 integration backends).
const USE_LOCAL_PORTS = process.env.LOCAL_PORTS === "1";

// SHOWCASE_BACKEND_HOST_PATTERN lets a single deployed test image be
// re-pointed at a different backend environment (e.g. staging) without
// regenerating registry.json. `{slug}` is the only placeholder. If unset,
// each integration's baked-in backend_url is used as-is (current behavior).
// LOCAL_PORTS=1 takes precedence so docker-compose flows are unaffected.
const HOST_PATTERN_OVERRIDE = process.env.SHOWCASE_BACKEND_HOST_PATTERN || "";
const applyHostPattern = (slug: string, defaultUrl: string): string => {
  if (!HOST_PATTERN_OVERRIDE) return defaultUrl;
  return `https://${HOST_PATTERN_OVERRIDE.replace("{slug}", slug)}`;
};

const rewriteBackendUrl = (slug: string, railwayUrl: string): string => {
  if (USE_LOCAL_PORTS) {
    const port = (localPorts as Record<string, number>)[slug];
    if (!port) throw new Error(`LOCAL_PORTS=1 but no port for slug '${slug}'`);
    return `http://localhost:${port}`;
  }
  return applyHostPattern(slug, railwayUrl);
};

// ---------------------------------------------------------------------------
// Integration registry — derived from showcase/shell/src/data/registry.json
// ---------------------------------------------------------------------------

const INTEGRATIONS = registry.integrations.map((i) => ({
  slug: i.slug,
  name: i.name,
  backendUrl: i.backend_url,
  deployed: i.deployed,
  hasToolRendering: i.features.includes("tool-rendering"),
  demos: i.demos.map((d: { id: string }) => d.id),
}));

// Only test deployed integrations unless SMOKE_ALL=true
const SMOKE_ALL = process.env.SMOKE_ALL === "true";
const activeIntegrations = (
  SMOKE_ALL ? INTEGRATIONS : INTEGRATIONS.filter((i) => i.deployed)
).map((i) => ({ ...i, backendUrl: rewriteBackendUrl(i.slug, i.backendUrl) }));

// ---------------------------------------------------------------------------
// Level 1: Health checks (@health) — fast, API-only
// ---------------------------------------------------------------------------

test.describe("Level 1: Backend Health @health", () => {
  for (const integration of activeIntegrations) {
    test(`[L1: health] ${integration.slug} backend is healthy @health`, async ({
      request,
    }) => {
      const result = await checkHealth(request, integration.backendUrl);
      expect(
        result.ok,
        `${integration.slug} health check failed: status=${result.status} path=${result.path} body=${result.body.slice(0, 500)}`,
      ).toBe(true);
    });
  }
});

// ---------------------------------------------------------------------------
// Level 2: Agent endpoint reachability (@agent)
// ---------------------------------------------------------------------------

test.describe("Level 2: Agent Endpoint @agent", () => {
  for (const integration of activeIntegrations) {
    test(`[L2: agent] ${integration.slug} agent endpoint responds (not 404) @agent`, async ({
      request,
    }) => {
      const result = await checkAgentEndpoint(request, integration.backendUrl);
      expect(
        result.status,
        `${integration.slug} agent endpoint returned 404 — likely using wrong agent type (LangGraphAgent vs HttpAgent). Status=${result.status} body=${result.body.slice(0, 500)}`,
      ).not.toBe(404);
      expect(
        result.ok,
        `${integration.slug} agent endpoint is unreachable: status=${result.status} body=${result.body.slice(0, 500)}`,
      ).toBe(true);
    });
  }
});

// ---------------------------------------------------------------------------
// Level 3: Round-trip chat (@chat) — browser-based
// ---------------------------------------------------------------------------

test.describe("Level 3: Round-trip Chat @chat", () => {
  for (const integration of activeIntegrations) {
    test(`[L3: chat] ${integration.slug} responds to a message @chat`, async ({
      page,
    }) => {
      test.slow(); // Allow extra time for cold starts

      const result = await sendChatMessage(
        page,
        integration.backendUrl,
        "Hello, please respond with a brief greeting.",
        "/demos/agentic-chat",
      );

      expect(
        result.gotResponse,
        `${integration.slug} did not produce an assistant response. The agent may be down, misconfigured, or using the wrong agent type.`,
      ).toBe(true);
      expect(
        result.responseText.length,
        `${integration.slug} assistant response was empty`,
      ).toBeGreaterThan(0);
    });
  }
});

// ---------------------------------------------------------------------------
// Level 4: Tool rendering (@tools) — browser-based, subset
// ---------------------------------------------------------------------------

test.describe("Level 4: Tool Rendering @tools", () => {
  // Future-proofing: `demos.includes("tool-rendering")` is what actually matters —
  // if a new integration lands without the tool-rendering demo, it's correctly
  // skipped here. The previous `hasToolRendering` boolean was redundant with
  // this check (always `true` alongside the demo entry) and has been removed.
  const toolIntegrations = activeIntegrations.filter((i) =>
    i.demos.includes("tool-rendering"),
  );

  for (const integration of toolIntegrations) {
    test(`[L4: tools] ${integration.slug} renders tool results @tools`, async ({
      page,
    }) => {
      test.slow();

      const result = await sendChatMessage(
        page,
        integration.backendUrl,
        "What's the weather in San Francisco?",
        "/demos/tool-rendering",
      );

      // Tool rendering should produce an assistant response
      expect(
        result.gotResponse,
        `${integration.slug} did not render a tool result`,
      ).toBe(true);

      // The response should contain weather-related content. Avoid a bare
      // `/\d+/` fallback — any digit anywhere makes the assertion vacuous
      // (timestamps, UI chrome, model names all contain digits). Match only
      // on weather-specific vocabulary.
      const responseLC = result.responseText.toLowerCase();
      const hasWeatherContent =
        responseLC.includes("san francisco") ||
        responseLC.includes("weather") ||
        responseLC.includes("temperature") ||
        responseLC.includes("degrees") ||
        responseLC.includes("sunny") ||
        responseLC.includes("cloudy") ||
        responseLC.includes("rain") ||
        responseLC.includes("humidity") ||
        responseLC.includes("wind");

      expect(
        hasWeatherContent,
        `${integration.slug} response doesn't contain weather info: "${result.responseText}"`,
      ).toBe(true);

      // Check for rendered components (not just text) — catches the query_data
      // loop bug where the agent returns text but never renders a chart/card.
      //
      // isVisible() resolves false for missing/detached elements rather than
      // throwing, so the previous .catch(() => false) was masking nothing on
      // the happy path — but it ALSO masked real errors (e.g. evaluation
      // errors in the locator) as "not visible", which is the concrete bug
      // the original TODO in this file flagged. Drop the swallowing catches
      // and let genuine errors surface as test failures; a missing optional
      // renderer still just yields `false`.
      const responseArea = page
        .locator('[data-testid="copilot-assistant-message"]')
        .last();
      const checks = await Promise.all([
        responseArea.locator(".recharts-wrapper").first().isVisible(),
        responseArea
          .locator("svg circle[stroke-dasharray]")
          .first()
          .isVisible(),
        responseArea
          .locator('[data-testid="weather-card"]')
          .first()
          .isVisible(),
        responseArea.locator("canvas").first().isVisible(),
      ]);
      const hasRenderedComponent = checks.some(Boolean);

      // Warning for now — upgrade to hard failure after data-testid convention
      // is established across all integrations
      if (!hasRenderedComponent) {
        console.warn(
          `\u26a0\ufe0f ${integration.slug}: Tool response contains text but no rendered chart/weather component. This would have missed the query_data loop bug.`,
        );
      }
    });
  }
});