import assert from "node:assert/strict";
import { mkdtemp, readFile, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { spawnSync } from "node:child_process";
import { test } from "bun:test";

import { nodeWebObserveAnalyzerSource } from "../hwlab-node-web-observe-analyzer-source";

const alertThresholds = {
  sameOriginApiSlowMs: 60000,
  partialApiSlowMs: 60000,
  longLivedStreamOpenSlowMs: 60000,
  visibleLoadingSlowMs: 60000,
  turnTimingSampleSlackSeconds: 60,
  turnElapsedSevereTimeoutSeconds: 3600,
  domEvaluateTimeoutRedCount: 99,
  domEvaluateTimeoutRedWindowMs: 60000,
  screenshotTimeoutRedCount: 99,
  pageErrorRedCount: 99,
  longTaskRedMs: 60000,
  longAnimationFrameRedMs: 60000,
  eventLoopGapRedMs: 60000,
  browserProcessSampleIntervalMs: 1000,
  requestRateBucketMs: 10000,
  requestRateTotalRedPerMinute: 999999,
  requestRatePageRedPerMinute: 999999,
  requestRateApiPathRedPerMinute: 999999,
  browserTotalRssRedMb: 999999,
  browserProcessRssRedMb: 999999,
  browserRssGrowthRedMb: 999999,
  browserRssGrowthWindowMs: 60000,
  playwrightResponsivenessRedMs: 60000,
  playwrightResponsivenessTimeoutRedCount: 99,
  cdpMetricsTimeoutRedCount: 99,
  uncommandedStateChangeCommandWindowMs: 1000,
  scrollJumpCommandWindowMs: 1000,
  scrollJumpFromY: 999999,
  scrollJumpToY: 999999,
  sessionRailFallbackRatio: 0.5,
};

const browserFreezePolicy = {
  enabled: true,
  blockerWindowMs: 60000,
  memory: {
    totalRssBlockerMb: 999999,
    processRssBlockerMb: 999999,
    growthBlockerMb: 999999,
  },
  responsiveness: {
    latencyBlockerMs: 60000,
    eventBlockerCount: 99,
  },
  cdp: {
    metricsTimeoutBlockerCount: 99,
  },
  kill: {
    enabled: false,
    gracefulSignal: "SIGTERM",
    forceSignal: "SIGKILL",
    graceMs: 1000,
    pollIntervalMs: 100,
    exitCode: 124,
  },
};

async function runObserveAnalyzer(files: Record<string, string>): Promise<Record<string, any>> {
  const stateDir = await mkdtemp(join(tmpdir(), "unidesk-web-observe-analyzer-"));
  const analyzerPath = join(stateDir, "analyze.mjs");
  await writeFile(analyzerPath, nodeWebObserveAnalyzerSource(), { mode: 0o700 });
  for (const [name, content] of Object.entries(files)) {
    await writeFile(join(stateDir, name), content.endsWith("\n") ? content : content + "\n");
  }
  const result = spawnSync("bun", [analyzerPath, stateDir], {
    cwd: join(import.meta.dir, "../../.."),
    env: {
      ...process.env,
      UNIDESK_WEB_OBSERVE_ANALYZE_TAIL_SAMPLES: "0",
      UNIDESK_WEB_OBSERVE_ALERT_THRESHOLDS_JSON: JSON.stringify(alertThresholds),
      UNIDESK_WEB_OBSERVE_BROWSER_FREEZE_POLICY_JSON: JSON.stringify(browserFreezePolicy),
    },
    encoding: "utf8",
  });
  assert.equal(result.status, 0, result.stderr || result.stdout);
  return JSON.parse(await readFile(join(stateDir, "analysis", "report.json"), "utf8"));
}

test("observe analyzer classifies stale completed session rail when a newer turn is running", async () => {
  const stateDir = await mkdtemp(join(tmpdir(), "unidesk-web-observe-analyzer-"));
  const analyzerPath = join(stateDir, "analyze.mjs");
  const samplesPath = join(stateDir, "samples.jsonl");
  await writeFile(analyzerPath, nodeWebObserveAnalyzerSource(), { mode: 0o700 });
  await writeFile(samplesPath, [
    JSON.stringify({
      seq: 1,
      ts: "2026-07-01T15:21:24.767Z",
      path: "/workbench/sessions/ses_triage",
      url: "https://hwlab.example.test/workbench/sessions/ses_triage",
      pageRole: "control",
      pageId: "control-test",
      routeSessionId: "ses_triage",
      activeSessionId: "ses_triage",
      sessionRail: {
        items: [{
          index: 0,
          active: true,
          status: "completed",
          dataStatus: "completed",
          running: false,
          dataRunning: "false",
          sessionId: "ses_triage",
          sessionIdPrefix: "ses_triage",
        }],
      },
      turns: [
        {
          role: "agent",
          status: "completed",
          traceId: "trc_previous_completed",
          messageId: "msg_previous_completed_agent",
          finalResponsePresent: true,
          finalResponseTextBytes: 12,
        },
        {
          role: "agent",
          status: "running",
          traceId: "trc_running_new_turn",
          messageId: "msg_running_new_turn_agent",
          finalResponsePresent: false,
          finalResponseTextBytes: 0,
        },
      ],
    }),
    JSON.stringify({
      seq: 2,
      ts: "2026-07-01T15:22:49.918Z",
      path: "/workbench/sessions/ses_triage",
      url: "https://hwlab.example.test/workbench/sessions/ses_triage",
      pageRole: "control",
      pageId: "control-test",
      routeSessionId: "ses_triage",
      activeSessionId: "ses_triage",
      sessionRail: {
        items: [{
          index: 0,
          active: true,
          status: "canceled",
          dataStatus: "canceled",
          running: false,
          dataRunning: "false",
          sessionId: "ses_triage",
          sessionIdPrefix: "ses_triage",
        }],
      },
      turns: [{
        role: "agent",
        status: "canceled",
        traceId: "trc_canceled_terminal",
        messageId: "msg_canceled_terminal_agent",
        finalResponsePresent: true,
        finalResponseTextBytes: 17,
      }],
    }),
  ].join("\n") + "\n");

  const result = spawnSync("bun", [analyzerPath, stateDir], {
    cwd: join(import.meta.dir, "../../.."),
    env: {
      ...process.env,
      UNIDESK_WEB_OBSERVE_ANALYZE_TAIL_SAMPLES: "0",
      UNIDESK_WEB_OBSERVE_ALERT_THRESHOLDS_JSON: JSON.stringify(alertThresholds),
      UNIDESK_WEB_OBSERVE_BROWSER_FREEZE_POLICY_JSON: JSON.stringify(browserFreezePolicy),
    },
    encoding: "utf8",
  });
  assert.equal(result.status, 0, result.stderr || result.stdout);

  const report = JSON.parse(await readFile(join(stateDir, "analysis", "report.json"), "utf8"));
  const finding = report.findings.find((item: Record<string, unknown>) => item.id === "workbench-turn-state-triad-inconsistent");
  assert.equal(finding?.rootCause, "workbench_session_rail_status_stale_after_new_running_turn");
  assert.equal(finding?.dominantMismatchKind, "rail-card-status-mismatch");
  assert.match(String(finding?.summary), /previous completed terminal status/u);
  assert.equal(report.sampleMetrics.workbenchTurnStateTriad.summary.invalidRowCount, 1);
  assert.equal(report.sampleMetrics.workbenchTurnStateTriad.summary.cardFinalResponseMismatchCount, 0);
}, 20_000);

test("observe analyzer flags automatic recovery legacy fanout authority", async () => {
  const samples = [
    JSON.stringify({
      seq: 1,
      ts: "2026-07-01T15:21:25.000Z",
      path: "/workbench/sessions/ses_auto",
      url: "https://hwlab.example.test/workbench/sessions/ses_auto",
      pageRole: "control",
      pageId: "control-test",
      routeSessionId: "ses_auto",
      activeSessionId: "ses_auto",
      turns: []
    })
  ].join("\n") + "\n";
  const network = [
    JSON.stringify({
      ts: "2026-07-01T15:21:26.000Z",
      type: "response",
      method: "POST",
      status: 202,
      url: "https://hwlab.example.test/v1/web-performance",
      webPerformancePayload: {
        parseStatus: "parsed",
        schemaVersion: "hwlab-web-performance-v2",
        events: [{
          kind: "workbench_ui_event",
          eventType: "runtime_diagnostic",
          module: "workbench-stream-transport",
          diagnosticCode: "workbench_recovery_action",
          recoveryAction: "hydrate-trace-events",
          rootCause: "sse-gap",
          eventCount: 0
        }]
      }
    }),
    JSON.stringify({ ts: "2026-07-01T15:21:27.000Z", type: "response", method: "GET", status: 200, url: "https://hwlab.example.test/v1/workbench/turns/trc_auto", bodySummary: { pathKind: "workbench-turn", terminalEvidenceCount: 1, traceIds: ["trc_auto"] } }),
    JSON.stringify({ ts: "2026-07-01T15:21:28.000Z", type: "response", method: "GET", status: 200, url: "https://hwlab.example.test/v1/workbench/sessions/ses_auto/messages", bodySummary: { pathKind: "workbench-session-messages", terminalEvidenceCount: 1, sessionIds: ["ses_auto"] } }),
    JSON.stringify({ ts: "2026-07-01T15:21:29.000Z", type: "response", method: "GET", status: 200, url: "https://hwlab.example.test/v1/workbench/traces/trc_auto/events", bodySummary: { pathKind: "workbench-trace-events", traceEventLikeCount: 3, traceIds: ["trc_auto"] } }),
    JSON.stringify({ ts: "2026-07-01T15:21:30.000Z", type: "response", method: "GET", status: 200, url: "https://hwlab.example.test/v1/workbench/sync?sessionId=ses_auto&traceId=trc_auto&since=7", bodySummary: { pathKind: "workbench-sync-replay", eventCount: 1, cursorOutboxSeq: 12, realtimeAuthority: "workbench-realtime-authority-v2", terminalSeal: true } })
  ].join("\n") + "\n";

  const report = await runObserveAnalyzer({ "samples.jsonl": samples, "network.jsonl": network });
  const finding = report.findings.find((item: Record<string, unknown>) => item.id === "workbench-automatic-recovery-fanout-authority");

  assert.equal(finding?.rootCause, "workbench_automatic_recovery_legacy_fanout");
  assert.equal(finding?.recoveryAuthority.summary.forbiddenAutomaticRecoveryCount, 1);
  assert.equal(finding?.recoveryAuthority.summary.legacyFanoutWindowCount, 1);
  assert.equal(finding?.recoveryAuthority.summary.syncReplayEvidenceCount, 1);
  assert.equal(report.runtimeAlerts.webPerformanceRuntimeDiagnostics[0].recoveryAction, "hydrate-trace-events");
}, 20_000);

test("observe analyzer allows explicit detail trace reads when sync authority evidence exists", async () => {
  const samples = JSON.stringify({
    seq: 1,
    ts: "2026-07-01T15:31:25.000Z",
    path: "/workbench/sessions/ses_detail",
    url: "https://hwlab.example.test/workbench/sessions/ses_detail",
    pageRole: "control",
    pageId: "control-test",
    routeSessionId: "ses_detail",
    activeSessionId: "ses_detail",
    turns: []
  }) + "\n";
  const network = [
    JSON.stringify({ ts: "2026-07-01T15:31:26.000Z", type: "response", method: "GET", status: 200, url: "https://hwlab.example.test/v1/workbench/traces/trc_detail/events", bodySummary: { pathKind: "workbench-trace-events", traceEventLikeCount: 2, traceIds: ["trc_detail"], authority: "trace-detail-only", detailProjection: true } }),
    JSON.stringify({
      ts: "2026-07-01T15:31:27.000Z",
      type: "response",
      method: "POST",
      status: 202,
      url: "https://hwlab.example.test/v1/web-performance",
      webPerformancePayload: {
        parseStatus: "parsed",
        schemaVersion: "hwlab-web-performance-v2",
        events: [{
          kind: "workbench_ui_event",
          eventType: "runtime_diagnostic",
          module: "workbench-sync-replay",
          diagnosticCode: "workbench_sync_replay_applied",
          rootCause: "sse-gap",
          eventCount: 1,
          sinceOutboxSeq: 7,
          syncCursorOutboxSeq: 12,
          realtimeAuthority: "workbench-realtime-authority-v2",
          entityFamilyCount: 1,
          entityFamilies: "turn",
          maxEntityVersion: 3,
          projectionRevision: "rev_detail",
          terminalSeal: true,
          detailProjection: false
        }]
      }
    })
  ].join("\n") + "\n";

  const report = await runObserveAnalyzer({ "samples.jsonl": samples, "network.jsonl": network });
  const finding = report.findings.find((item: Record<string, unknown>) => item.id === "workbench-automatic-recovery-fanout-authority");

  assert.equal(finding, undefined);
  assert.equal(report.runtimeAlerts.webPerformanceRuntimeDiagnostics[0].syncCursorOutboxSeq, 12);
}, 20_000);