#!/usr/bin/env node

// ── EPIPE suppression (must run before ANY stdout/stderr write) ────────────
// When the CLI runs inside a piped agent environment (Claude Code, Codex,
// Cursor, etc.), the reader may close the pipe before we finish writing.
// Node treats EPIPE on stdout/stderr as an uncaughtException, which crashes
// the process. This is a normal lifecycle event — suppress it.
//
// commandFailed must be declared here (before the handlers) so the EPIPE
// stream-error path can set it before process.exit(0). The telemetry exit
// handler reads this flag to determine success/failure — an EPIPE that
// interrupts a command should NOT score as success:true, but one that
// arrives after the render artifact was validated is the normal agent-pipe
// teardown and must stay success:true (see handleStreamEpipe).
let commandFailed = false;

for (const stream of [process.stdout, process.stderr]) {
  stream.on("error", (err) => {
    if ((err as NodeJS.ErrnoException).code === "EPIPE") {
      handleStreamEpipe();
    }
  });
}

// ── Worker entry path bootstrap (must run before any producer/engine load) ──
// The shaderTransitionWorkerPool lives in the producer package and resolves
// its worker entry by probing for a sibling `.js` file next to
// `import.meta.url`. When this CLI is bundled by tsup, the producer code is
// inlined into `cli.js`, but `import.meta.url` resolves to the producer's
// own dist path (NOT cli.js) on some module-graph layouts — so the sibling
// probe lands in a directory that does not contain the bundled worker.
// We emit the worker entry next to cli.js (see tsup.config.ts) and tell
// the pool where to find it via the published env-var override.
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
import { existsSync } from "node:fs";

(() => {
  const here = dirname(fileURLToPath(import.meta.url));
  const shader = join(here, "shaderTransitionWorker.js");
  if (!process.env.HF_SHADER_WORKER_ENTRY && existsSync(shader)) {
    process.env.HF_SHADER_WORKER_ENTRY = shader;
  }
})();

// ── Fast-path exits ─────────────────────────────────────────────────────────
// Check --version before importing anything heavy. This makes
// `hyperframes --version` near-instant (~10ms vs ~80ms).
import { VERSION } from "./version.js";

const argv = process.argv.slice(2);
const commandArg = argv[0];
const rootVersionRequested =
  commandArg === "--version" ||
  commandArg === "-V" ||
  (commandArg === undefined && (argv.includes("--version") || argv.includes("-V")));

if (rootVersionRequested) {
  console.log(VERSION);
  process.exit(0);
}

// ── Load .env from CWD ─────────────────────────────────────────────────────
// Agents run from the project directory where .env holds API keys (Gemini,
// HeyGen, ElevenLabs). Load it automatically so they don't need `source .env`.
try {
  const { readFileSync } = await import("node:fs");
  const { resolve } = await import("node:path");
  const envPath = resolve(process.cwd(), ".env");
  const envContent = readFileSync(envPath, "utf-8");
  for (const rawLine of envContent.split("\n")) {
    let line = rawLine.trim();
    if (!line || line.startsWith("#")) continue;
    // Tolerate `export FOO=bar` (common in dotfile-style .env files).
    if (line.startsWith("export ")) line = line.slice(7).trim();
    const eqIdx = line.indexOf("=");
    if (eqIdx < 1) continue;
    const key = line.slice(0, eqIdx).trim();
    let val = line.slice(eqIdx + 1).trim();
    if (val.startsWith('"') || val.startsWith("'")) {
      // Quoted value: take until the matching closing quote; leave the rest.
      // Anything after a closing quote (including `# comment`) is dropped.
      const quote = val.charAt(0);
      const end = val.indexOf(quote, 1);
      if (end > 0) val = val.slice(1, end);
      else val = val.slice(1); // unterminated quote — best-effort, strip opener
    } else {
      // Unquoted value: strip inline `# comment` (requires whitespace before #
      // to avoid eating `pass#word` style values).
      const commentMatch = val.match(/\s+#/);
      if (commentMatch?.index !== undefined) val = val.slice(0, commentMatch.index).trim();
    }
    if (key && !(key in process.env)) process.env[key] = val;
  }
} catch {
  /* .env not present — fine, env vars may be set another way */
}

// ── Lazy imports ────────────────────────────────────────────────────────────
// Telemetry, update checks, and heavy modules are imported only when needed.
// For --help we skip telemetry entirely.

import { defineCommand, runCommand } from "citty";
import type { ArgsDef, CommandDef } from "citty";
import { getRunId } from "./telemetry/runId.js";
import { reportCommandFailure, trackCommandFailures } from "./utils/command-failure-tracking.js";
import { isRenderSucceeded } from "./utils/render-success-state.js";
import { resolveCommandUsage } from "./utils/commandUsageResolution.js";
import {
  CliResultSignal,
  CliRuntimeError,
  CliUsageError,
  consumeCommandResult,
  registerRootExitCodeSanitizer,
  registerRootExitRequester,
  type CommandResult,
} from "./utils/commandResult.js";

const isHelp = process.argv.includes("--help") || process.argv.includes("-h");

// ---------------------------------------------------------------------------
// CLI definition — all commands are lazy-loaded via dynamic import()
// ---------------------------------------------------------------------------

const commandLoaders = {
  init: () => import("./commands/init.js").then((m) => m.default),
  add: () => import("./commands/add.js").then((m) => m.default),
  catalog: () => import("./commands/catalog.js").then((m) => m.default),
  play: () => import("./commands/play.js").then((m) => m.default),
  present: () => import("./commands/present.js").then((m) => m.default),
  preview: () => import("./commands/preview.js").then((m) => m.default),
  publish: () => import("./commands/publish.js").then((m) => m.default),
  render: () => import("./commands/render.js").then((m) => m.default),
  lint: () => import("./commands/lint.js").then((m) => m.default),
  check: () => import("./commands/check.js").then((m) => m.default),
  beats: () => import("./commands/beats.js").then((m) => m.default),
  "normalize-audio": () => import("./commands/normalize-audio.js").then((m) => m.default),
  inspect: () => import("./commands/inspect.js").then((m) => m.default),
  keyframes: () => import("./commands/keyframes.js").then((m) => m.default),
  layout: () => import("./commands/layout.js").then((m) => m.default),
  info: () => import("./commands/info.js").then((m) => m.default),
  compositions: () => import("./commands/compositions.js").then((m) => m.default),
  benchmark: () => import("./commands/benchmark.js").then((m) => m.default),
  browser: () => import("./commands/browser.js").then((m) => m.default),
  "remove-background": () => import("./commands/remove-background.js").then((m) => m.default),
  transcribe: () => import("./commands/transcribe.js").then((m) => m.default),
  tts: () => import("./commands/tts.js").then((m) => m.default),
  docs: () => import("./commands/docs.js").then((m) => m.default),
  doctor: () => import("./commands/doctor.js").then((m) => m.default),
  upgrade: () => import("./commands/upgrade.js").then((m) => m.default),
  skills: () => import("./commands/skills.js").then((m) => m.default),
  feedback: () => import("./commands/feedback.js").then((m) => m.default),
  telemetry: () => import("./commands/telemetry.js").then((m) => m.default),
  events: () => import("./commands/events.js").then((m) => m.default),
  validate: () => import("./commands/validate.js").then((m) => m.default),
  snapshot: () => import("./commands/snapshot.js").then((m) => m.default),
  "media-treatment": () =>
    import("./commands/media-treatment.js").then((m) => m.mediaTreatmentCommand),
  "grade-compare": () => import("./commands/grade-compare.js").then((m) => m.default),
  compare: () => import("./commands/compare.js").then((m) => m.default),
  capture: () => import("./commands/capture.js").then((m) => m.default),
  lambda: () => import("./commands/lambda.js").then((m) => m.default),
  cloudrun: () => import("./commands/cloudrun.js").then((m) => m.default),
  cloud: () => import("./commands/cloud.js").then((m) => m.default),
  auth: () => import("./commands/auth.js").then((m) => m.default),
  figma: () => import("./commands/figma.js").then((m) => m.default),
};

const subCommands = Object.fromEntries(
  Object.entries(commandLoaders).map(([name, load]) => [name, trackCommandFailures(load)]),
);

const main = defineCommand({
  meta: {
    name: "hyperframes",
    version: VERSION,
    description: "Create and render HTML video compositions",
  },
  subCommands,
});

// ---------------------------------------------------------------------------
// Telemetry — lazy-loaded, captured references for exit handlers
// ---------------------------------------------------------------------------

const cliCommandArg = process.argv[2];
// Explicit annotation breaks a type cycle: `subCommands` references `command`
// (in the failure reporter) and `command` references `subCommands` (the `in`
// check), so its type can't be inferred from its own initializer.
const command: string = cliCommandArg && cliCommandArg in subCommands ? cliCommandArg : "unknown";
const hasJsonFlag = process.argv.includes("--json");

// Captured references — populated when the lazy imports resolve.
// Used in exit handlers where dynamic import() is unsafe (beforeExit loops,
// exit handler is synchronous-only).
let _flush: (() => Promise<void>) | undefined;
let _flushSync: (() => void) | undefined;
let _trackCliError:
  | ((props: {
      error_name: string;
      error_message: string;
      stack_trace?: string;
      command?: string;
      kind: "uncaught_exception" | "unhandled_rejection" | "command_error";
    }) => void)
  | undefined;
let _trackCommandResult:
  | ((props: {
      command: string;
      success: boolean;
      exitCode: number;
      durationMs: number;
      runId?: string;
    }) => void)
  | undefined;
let _printUpdateNotice: (() => void) | undefined;
let _printStalePinNotice: (() => void) | undefined;
let _printSkillsUpdateNotice: (() => void) | undefined;
let telemetryReady: Promise<void> = Promise.resolve();

// `events` is a telemetry-internal beacon: it self-tracks + self-flushes, so it
// skips the per-command wrapper (no duplicate cli_command, no first-run notice
// printed into a skill's captured output).
if (!isHelp && command !== "telemetry" && command !== "events" && command !== "unknown") {
  telemetryReady = import("./telemetry/index.js").then((mod) => {
    _flush = mod.flush;
    _flushSync = mod.flushSync;
    _trackCliError = mod.trackCliError;
    _trackCommandResult = mod.trackCommandResult;
    mod.showTelemetryNotice();
    mod.trackCommand(command, runId);
    if (mod.shouldTrack()) mod.incrementCommandCount();
  });
}

// `events` skips the update check too — a skill-usage beacon must not add
// network latency or trigger a background self-upgrade on the calling skill.
// `telemetry` skips it because update metadata must never race the command
// that changes the user's telemetry preference.
// `skills` is excluded from the SKILLS nudge for the same reason `upgrade` is
// excluded from the self-update notice: a command that is itself actively
// checking/reconciling skills (`skills check`, `skills update`) must not also
// tell the user to go run `skills update` — that's either redundant (it just
// did) or, worse, misleading (it printed a stale nudge count from the last
// cached check while reporting fresh results of its own).
if (
  !isHelp &&
  !hasJsonFlag &&
  command !== "upgrade" &&
  command !== "events" &&
  command !== "telemetry" &&
  command !== "skills"
) {
  // Report any completed auto-install from the previous run first, before
  // kicking off the next check — so the user sees "updated to vX" once and
  // we don't over-print.
  import("./utils/autoUpdate.js").then((mod) => mod.reportCompletedUpdate()).catch(() => {});

  import("./utils/updateCheck.js").then(async (mod) => {
    _printUpdateNotice = mod.printUpdateNotice;
    _printStalePinNotice = mod.printStalePinNotice;
    const result = await mod.checkForUpdate().catch(() => null);
    if (result?.updateAvailable) {
      const auto = await import("./utils/autoUpdate.js").catch(() => null);
      auto?.scheduleBackgroundInstall(result.latest, result.current);
    }
  });

  // Skills freshness nudge — same gating as the CLI self-update notice. The
  // check is cached (24h) and best-effort: it never blocks or fails the command.
  import("./utils/skillsUpdateCheck.js").then(async (mod) => {
    _printSkillsUpdateNotice = mod.printSkillsUpdateNotice;
    await mod.checkSkillsForUpdate().catch(() => null);
  });
}

const commandStart = Date.now();
const runId = getRunId();
let finalized = false;

// Root-only lifecycle fan-in: telemetry, notices, flushing, then exit code.
// fallow-ignore-next-line complexity
async function finalizeCli(result: CommandResult): Promise<void> {
  if (finalized) return;
  finalized = true;
  commandFailed ||= result.exitCode !== 0;
  await telemetryReady.catch(() => {});
  _trackCommandResult?.({
    command,
    success: result.exitCode === 0 && commandSucceededForTelemetry(),
    exitCode: result.exitCode,
    durationMs: Date.now() - commandStart,
    runId,
  });
  await _flush?.().catch(() => {});
  if (!hasJsonFlag) {
    _printUpdateNotice?.();
    _printStalePinNotice?.();
    _printSkillsUpdateNotice?.();
  }
  process.exitCode = result.exitCode;
}

registerRootExitRequester((exitCode) => {
  void finalizeCli({
    exitCode,
    kind: exitCode === 0 ? "success" : "runtime_error",
    presented: true,
  }).finally(() => process.exit(exitCode));
});

registerRootExitCodeSanitizer(() => {
  if (process.exitCode !== undefined && process.exitCode !== 0) {
    process.exitCode = 0;
  }
});

// Sync-only: exit handlers cannot await promises or drain microtasks.
// _trackCommandResult / _trackCliError are captured references resolved
// at init time, so they're callable synchronously here.
process.on(
  "exit",
  // fallow-ignore-next-line complexity
  (code) => {
    if (!finalized) {
      _trackCommandResult?.({
        command,
        success: code === 0 && commandSucceededForTelemetry(),
        exitCode: code,
        durationMs: Date.now() - commandStart,
        runId,
      });
    }
    // Unconditional — `finalized` only means finalizeCli STARTED its awaited
    // flush(). A process.exit() racing that flush (the EPIPE path under agent
    // pipes) kills the in-flight request, and gating this fallback behind
    // `finalized` silently dropped the still-queued events — the 0.7.65
    // render_complete regression. flushSync() is safe to over-call: an empty
    // queue is a no-op, and event uuids make re-sends idempotent.
    _flushSync?.();
  },
);

// Report a CLI error event to telemetry. Extracted from the process-error
// handlers so their bodies stay simple linear branches (see fallow CRAP
// scoring — arrow handlers with inline telemetry calls tip past threshold).
function emitCliErrorEvent(kind: "uncaught_exception" | "unhandled_rejection", error: Error): void {
  _trackCliError?.({
    error_name: error.name,
    error_message: error.message,
    stack_trace: error.stack,
    command,
    kind,
  });
}

// Handle a post-artifact-validated throw: record the diagnostic, emit the
// telemetry event, but do NOT mark the run as failed. Field signals:
//   ts=1784169760, ts=1784171150, ts=1784172467 (all win32/x64, CLI 0.7.58,
//   ffmpeg=no, 1080x1920, valid MP4s on disk).
// The render is valid — a worker teardown / browser shutdown / stray
// subprocess stream error after `renderSucceeded` was set must not flip
// exit code or telemetry success to failure.
function reportPostRenderTerminationEvent(
  label: "uncaughtException" | "unhandledRejection",
  kind: "uncaught_exception" | "unhandled_rejection",
  error: Error,
): void {
  process.stderr.write(
    `  [hyperframes] Post-render ${label} (render already succeeded): ${error.message}\n`,
  );
  emitCliErrorEvent(kind, error);
}

// Terminate the process after a post-artifact-validated throw. Wraps
// report + flush + exit(0) so the caller arrow handler doesn't accumulate
// optional-chain branches (fallow CRAP scoring on the arrow tips past
// threshold otherwise).
function exitAfterPostRenderTermination(
  label: "uncaughtException" | "unhandledRejection",
  kind: "uncaught_exception" | "unhandled_rejection",
  error: Error,
): never {
  reportPostRenderTerminationEvent(label, kind, error);
  _flushSync?.();
  process.exit(0);
}

// A closed pipe (EPIPE) is the NORMAL teardown when the CLI runs under a
// piped agent (Claude Code, Codex, …) — the reader may stop consuming as
// soon as it has what it needs. Exit cleanly, but only score the run as a
// failure when the pipe died BEFORE the render artifact was validated:
// unconditionally setting `commandFailed = true` here marked every piped
// successful render as success:false (0.7.65–0.7.90). Delivery of anything
// still queued (render_complete's eager flush() dies with the process) is
// owned by the unconditional flushSync() in the `exit` handler below.
function handleStreamEpipe(): never {
  if (!isRenderSucceeded()) commandFailed = true;
  process.exit(0);
}

// Success gate for the cli_command_result telemetry field. `commandFailed`
// can be set by pre-artifact noise — a stray unhandledRejection mid-render,
// or an EPIPE that fires before validation on a run that still completes.
// Once the render artifact has been validated (`isRenderSucceeded()`), that
// earlier noise must not score the run as a failure: the run delivered.
// Genuine failures keep a non-zero exit code and are caught by the
// `exitCode === 0 &&` half of the expression at both call sites.
function commandSucceededForTelemetry(): boolean {
  return !commandFailed || isRenderSucceeded();
}

// Terminate the process after a genuine CLI failure — mark commandFailed,
// emit telemetry, flush, exit(1). Same rationale as above: keeps the arrow
// handler linear so fallow CRAP stays under threshold.
function exitAfterCliFailure(
  kind: "uncaught_exception" | "unhandled_rejection",
  error: Error,
): never {
  commandFailed = true;
  emitCliErrorEvent(kind, error);
  _flushSync?.();
  process.exit(1);
}

process.on("uncaughtException", (error) => {
  if ((error as NodeJS.ErrnoException).code === "EPIPE") {
    handleStreamEpipe();
  }
  // Post-artifact-validated shutdown throws must not turn a valid render
  // into an exit-1 "no final error message" failure. The render command
  // sets `renderSucceeded` right after the producer resolves and the
  // artifact is committed.
  if (isRenderSucceeded()) {
    exitAfterPostRenderTermination("uncaughtException", "uncaught_exception", error);
  }
  exitAfterCliFailure("uncaught_exception", error);
});

// unhandledRejection does not call process.exit() — Node may continue
// running if the rejection is non-fatal (e.g. a fire-and-forget promise).
// The exit handler above will still fire with the real exit code.
process.on("unhandledRejection", (reason) => {
  const error = reason instanceof Error ? reason : new Error(String(reason));
  // Same rationale as the uncaughtException branch above: a stray promise
  // rejection during post-artifact-validated cleanup must not mark a valid
  // render as failed. `commandFailed` gates the success:true telemetry
  // field — keep it false when the render actually succeeded.
  if (isRenderSucceeded()) {
    reportPostRenderTerminationEvent("unhandledRejection", "unhandled_rejection", error);
    return;
  }
  commandFailed = true;
  process.exitCode = 1;
  emitCliErrorEvent("unhandled_rejection", error);
});

// Lazy-load help renderer — avoids allocating help data on non-help invocations
async function showUsage<T extends ArgsDef>(
  cmd: CommandDef<T>,
  parent?: CommandDef<T>,
): Promise<void> {
  const { showUsage: impl } = await import("./help.js");
  return impl(cmd as CommandDef, parent as CommandDef | undefined);
}

async function showRequestedUsage(): Promise<void> {
  const requested = await resolveCommandUsage(main as CommandDef, argv);
  return showUsage(requested.command, requested.parent);
}

function commandResultForError(error: unknown): CommandResult {
  if (error instanceof CliResultSignal) return error.result;
  if (error instanceof CliUsageError || error instanceof CliRuntimeError) return error.result;
  return { exitCode: 1, kind: "runtime_error" };
}

// Root-only command boundary; keeping every result path here prevents modules
// from bypassing output, telemetry, or finalizers.
// fallow-ignore-next-line complexity
async function executeCli(): Promise<void> {
  let result: CommandResult = { exitCode: 0, kind: "success" };
  try {
    if (isHelp) await showRequestedUsage();
    else await runCommand(main, { rawArgs: argv });
  } catch (error) {
    result = commandResultForError(error);
    if (!(error instanceof CliResultSignal)) {
      commandFailed = true;
      await reportCommandFailure(command, error);
      const typed = error instanceof CliUsageError || error instanceof CliRuntimeError;
      if (error instanceof CliUsageError && !error.result.presented) await showRequestedUsage();
      if (!typed || !error.result.presented) {
        console.error(error instanceof Error ? error.message : String(error));
      }
    }
  } finally {
    const pending = consumeCommandResult();
    if (pending.exitCode !== 0 || result.exitCode === 0) result = pending;
    await finalizeCli(result);
  }
}

await executeCli();