#!/usr/bin/env node

import { readFile } from "node:fs/promises";
import {
  applyCanvasOperation,
  getCanvas,
  getCurrentUser,
  listCanvases,
} from "./api-client.mjs";

function printHelp() {
  process.stdout.write(`Usage:
  yedir me
  yedir canvases list [--workspace-type canvas|agent|video] [--limit 24]
  yedir canvases get <canvas-id>
  yedir canvas apply <canvas-id> --operation-file <path|->

Environment:
  YEDIR_BASE_URL       Site URL, default http://localhost:3000
  YEDIR_ACCESS_TOKEN   User Access Key created in the site
`);
}

function readFlag(args, name, fallback) {
  const index = args.indexOf(name);
  return index >= 0 && args[index + 1] ? args[index + 1] : fallback;
}

async function readJsonFile(path) {
  const raw = path === "-" ? await new Response(process.stdin).text() : await readFile(path, "utf8");
  return JSON.parse(raw);
}

async function main() {
  const args = process.argv.slice(2);
  let result;

  if (args[0] === "me") {
    result = await getCurrentUser();
  } else if (args[0] === "canvases" && args[1] === "list") {
    result = await listCanvases({
      workspaceType: readFlag(args, "--workspace-type", "canvas"),
      limit: Number(readFlag(args, "--limit", "24")),
    });
  } else if (args[0] === "canvases" && args[1] === "get" && args[2]) {
    result = await getCanvas(args[2]);
  } else if (args[0] === "canvas" && args[1] === "apply" && args[2]) {
    const operationFile = readFlag(args, "--operation-file", "");
    if (!operationFile) throw new Error("--operation-file is required");
    const raw = await readJsonFile(operationFile);
    result = await applyCanvasOperation(args[2], raw.operationPlan || raw);
  } else {
    printHelp();
    process.exitCode = args.length === 0 || args.includes("--help") ? 0 : 2;
    return;
  }

  process.stdout.write(`${JSON.stringify(result, null, 2)}\n`);
}

main().catch((error) => {
  process.stderr.write(
    `${JSON.stringify({
      success: false,
      error: error instanceof Error ? error.message : String(error),
      status: Number(error?.status) || undefined,
      details: error?.payload || undefined,
    })}\n`
  );
  process.exitCode = 1;
});