#!/usr/bin/env node
/**
 * API Tester CLI — reuses src/api/index.js directly.
 *
 * Usage:
 *   node src/api/api-tester.mjs                          # interactive REPL
 *   node src/api/api-tester.mjs <method> [args...]        # one-shot call
 *
 * Auth:
 *   1. Copy your session cookie from the browser DevTools (name: "token", value: the JWT)
 *   2. Paste it into ~/.dashfront-token (or pass --token-file <path>)
 *   3. Or pass --token <jwt-string> on the command line
 *
 * Examples:
 *   node src/api/api-tester.mjs posterminal.list
 *   node src/api/api-tester.mjs category.getTree
 *   node src/api/api-tester.mjs posterminal.create '{"name":"Kassa 3"}'
 *   node src/api/api-tester.mjs auth.me
 */

import { readFileSync } from 'node:fs';
import { homedir } from 'node:os';
import { resolve } from 'node:path';
import { createInterface } from 'node:readline';

// ── CLI args ─────────────────────────────────────────────────────────────────
const args = process.argv.slice(2);

function flag(name) {
  const idx = args.indexOf(name);
  if (idx === -1) return null;
  const val = args[idx + 1];
  args.splice(idx, 2);
  return val;
}

const BASE_URL = flag('--base') || 'http://localhost:4208';
const tokenFileArg = flag('--token-file');
const tokenArg = flag('--token');

function loadToken() {
  if (tokenArg) return tokenArg;

  const paths = [
    tokenFileArg,
    resolve(homedir(), '.dashfront-token'),
    './.dashfront-token',
  ].filter(Boolean);

  for (const p of paths) {
    try {
      const t = readFileSync(p, 'utf-8').trim();
      if (t) return t;
    } catch { /* ignore */ }
  }

  console.error('No token found. Options:');
  console.error('  1. Place JWT in ~/.dashfront-token');
  console.error('  2. Pass --token <jwt>');
  console.error('  3. Pass --token-file <path>');
  process.exit(1);
}

const TOKEN = loadToken();

// ── Patch globals so src/api/index.js works in Node ──────────────────────────

// Fake browser globals so src/api/index.js works in Node
globalThis.window = {
  location: { origin: BASE_URL },
};
globalThis.document = {
  get cookie() { return ''; },
  set cookie(_v) { /* no-op */ },
};

// Patch fetch to send the session cookie
const originalFetch = globalThis.fetch;
globalThis.fetch = async (input, init) => {
  const url = typeof input === 'string' ? input : input?.url ?? String(input);
  const fullUrl = url.startsWith('http') ? url : `${BASE_URL}${url}`;

  const headers = new Headers(init?.headers);
  headers.set('Cookie', `token=${TOKEN}`);

  const res = await originalFetch(fullUrl, { ...init, headers });
  return res;
};

// ── Load the API module ──────────────────────────────────────────────────────

const api = (await import('./index.js')).default;

// ── Helpers ──────────────────────────────────────────────────────────────────

const flatten = (obj, prefix = '') => {
  const entries = [];
  for (const [key, val] of Object.entries(obj)) {
    const path = prefix ? `${prefix}.${key}` : key;
    if (typeof val === 'function') {
      entries.push([path, val]);
    } else if (typeof val === 'object' && val !== null) {
      entries.push(...flatten(val, path));
    }
  }
  return entries;
};

const methods = new Map(flatten(api));

function parseArg(raw) {
  const trimmed = raw.trim();
  if (trimmed === 'undefined') return undefined;
  if (trimmed === 'null') return null;
  if (trimmed === 'true') return true;
  if (trimmed === 'false') return false;
  try { return JSON.parse(trimmed); } catch { return trimmed; }
}

function invoke(methodPath, argStrings = []) {
  const fn = methods.get(methodPath);
  if (!fn) {
    console.error(`Unknown method: ${methodPath}`);
    console.error(`Available: ${[...methods.keys()].join(', ')}`);
    return;
  }

  const args = argStrings.map(parseArg);

  return fn(...args)
    .then((result) => {
      console.log(JSON.stringify(result, null, 2));
      return result;
    })
    .catch((err) => {
      console.error(`[ERROR] ${err.message}`);
      if (err.status) console.error(`  status: ${err.status}`);
      if (err.data) console.error(`  data:`, err.data);
    });
}

// ── One-shot mode ────────────────────────────────────────────────────────────

if (args.length > 0) {
  const [method, ...rest] = args;
  await invoke(method, rest);
  process.exit(0);
}

// ── Interactive REPL ─────────────────────────────────────────────────────────

console.log(`API Tester — ${BASE_URL}`);
console.log(`Token: ${TOKEN.slice(0, 20)}…`);
console.log(`Methods: ${[...methods.keys()].join(', ')}`);
console.log('Type a method call, or "quit" to exit.\n');

const rl = createInterface({ input: process.stdin, output: process.stdout });

function prompt() {
  rl.question('api> ', async (line) => {
    const trimmed = line.trim();
    if (!trimmed || trimmed === 'quit' || trimmed === 'exit') {
      rl.close();
      process.exit(0);
    }

    // Parse: method arg1 arg2 ...
    // Arguments are space-separated; wrap objects in quotes: method '{"key":"val"}'
    const parts = trimmed.match(/(?:[^\s"]+|"[^"]*")+/g) || [];
    const [method, ...rest] = parts.map((p) => p.replace(/^"|"$/g, ''));

    await invoke(method, rest);
    prompt();
  });
}

prompt();