#!/usr/bin/env node
import fs from 'node:fs';

function parseArgs(argv) {
  let inputPath = null;
  let compact = false;

  for (let i = 0; i < argv.length; i += 1) {
    const arg = argv[i];

    if (arg === '--input') {
      inputPath = argv[i + 1] ?? null;
      i += 1;
      continue;
    }

    if (arg.startsWith('--input=')) {
      inputPath = arg.slice('--input='.length);
      continue;
    }

    if (arg === '--compact') {
      compact = true;
      continue;
    }
  }

  return { inputPath, compact };
}

function readInput(inputPath) {
  if (!inputPath) {
    return {
      ok: false,
      error: 'missing_required_input',
    };
  }

  try {
    const raw = fs.readFileSync(inputPath, 'utf8');
    return {
      ok: true,
      bytes: Buffer.byteLength(raw, 'utf8'),
    };
  } catch (error) {
    return {
      ok: false,
      error: error instanceof Error ? error.message : String(error),
    };
  }
}

const { inputPath, compact } = parseArgs(process.argv.slice(2));
const input = readInput(inputPath);

const response = {
  ok: input.ok,
  status: input.ok ? 'placeholder_receipt' : 'input_error',
  binding: 'approved_plan_dispatch',
  compact,
  inputPath,
  receipt: input.ok
    ? {
        placeholder: true,
        planId: null,
        currentTask: null,
        nextDerivedAction: null,
        dispatchedAt: null,
      }
    : null,
  input: input.ok
    ? {
        ok: true,
        bytes: input.bytes,
      }
    : {
        ok: false,
        error: input.error,
      },
};

process.stdout.write(`${JSON.stringify(response)}\n`);