const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');

const source = fs.readFileSync('content/gopay-flow.js', 'utf8');

function extractFunction(name) {
  const markers = [`async function ${name}(`, `function ${name}(`];
  const start = markers
    .map((marker) => source.indexOf(marker))
    .find((index) => index >= 0);
  if (start < 0) {
    throw new Error(`missing function ${name}`);
  }

  let parenDepth = 0;
  let signatureEnded = false;
  let braceStart = -1;
  for (let index = start; index < source.length; index += 1) {
    const ch = source[index];
    if (ch === '(') {
      parenDepth += 1;
    } else if (ch === ')') {
      parenDepth -= 1;
      if (parenDepth === 0) signatureEnded = true;
    } else if (ch === '{' && signatureEnded) {
      braceStart = index;
      break;
    }
  }
  if (braceStart < 0) {
    throw new Error(`missing body for ${name}`);
  }

  let depth = 0;
  let end = braceStart;
  for (; end < source.length; end += 1) {
    const ch = source[end];
    if (ch === '{') depth += 1;
    if (ch === '}') {
      depth -= 1;
      if (depth === 0) {
        end += 1;
        break;
      }
    }
  }
  return source.slice(start, end);
}

test('GoPay human click helper dispatches pointer and mouse sequence before native click', async () => {
  const bundle = [
    extractFunction('dispatchPointerMouseSequence'),
    extractFunction('humanClickElement'),
  ].join('\n');
  const events = [];
  const button = {
    tagName: 'BUTTON',
    scrollIntoView() { events.push('scroll'); },
    focus() { events.push('focus'); },
    click() { events.push('native-click'); },
    getBoundingClientRect() { return { left: 10, top: 20, width: 100, height: 40 }; },
    dispatchEvent(event) {
      events.push(event.type);
      return true;
    },
  };

  const api = new Function('button', 'events', `
const window = { screenX: 0, screenY: 0 };
class MouseEvent { constructor(type, init = {}) { this.type = type; this.init = init; } }
class PointerEvent extends MouseEvent {}
async function sleep() { events.push('sleep'); }
${bundle}
return { humanClickElement };
`)(button, events);

  await api.humanClickElement(button, { beforeMs: 1, afterDispatchMs: 1, afterMs: 1 });

  assert.deepEqual(events.slice(0, 3), ['scroll', 'sleep', 'focus']);
  assert.ok(events.includes('pointerdown'));
  assert.ok(events.includes('mousedown'));
  assert.ok(events.includes('mouseup'));
  assert.ok(events.includes('click'));
  assert.equal(events.at(-2), 'native-click');
});


test('GoPay continue target exposes a debugger-clickable rect', () => {
  const bundle = [
    extractFunction('normalizeText'),
    extractFunction('getActionText'),
    extractFunction('isVisibleElement'),
    extractFunction('getVisibleControls'),
    extractFunction('isEnabledControl'),
    extractFunction('findClickableByText'),
    extractFunction('findContinueButton'),
    extractFunction('describeElement'),
    extractFunction('getElementClickRect'),
    extractFunction('getGoPayContinueTarget'),
  ].join('\n');
  const button = {
    tagName: 'BUTTON',
    id: 'link-and-pay',
    className: 'btn primary',
    textContent: 'Link and pay',
    innerText: 'Link and pay',
    value: '',
    disabled: false,
    hidden: false,
    parentElement: null,
    getAttribute(name) {
      if (name === 'class') return this.className;
      return '';
    },
    getBoundingClientRect() { return { left: 20, top: 30, width: 160, height: 44 }; },
  };
  const api = new Function('button', `
const window = {
  getComputedStyle() { return { display: 'block', visibility: 'visible', opacity: '1' }; },
  innerWidth: 390,
  innerHeight: 844,
};
const document = {
  querySelectorAll(selector) {
    return selector.includes('button') || selector.includes('[role="button"]') ? [button] : [];
  },
};
${bundle}
return { getGoPayContinueTarget };
`)(button);

  const target = api.getGoPayContinueTarget();
  assert.equal(target.found, true);
  assert.equal(target.rect.centerX, 100);
  assert.equal(target.rect.centerY, 52);
  assert.match(target.target, /Link and pay/);
});

test('GoPay continue target recognizes Indonesian Hubungkan linking button', () => {
  const bundle = [
    extractFunction('normalizeText'),
    extractFunction('getActionText'),
    extractFunction('isVisibleElement'),
    extractFunction('getVisibleControls'),
    extractFunction('isEnabledControl'),
    extractFunction('findClickableByText'),
    extractFunction('findContinueButton'),
    extractFunction('describeElement'),
    extractFunction('getElementClickRect'),
    extractFunction('getGoPayContinueTarget'),
  ].join('\n');
  const button = {
    tagName: 'BUTTON',
    id: '',
    className: 'btn primary',
    textContent: 'Hubungkan',
    innerText: 'Hubungkan',
    value: '',
    disabled: false,
    hidden: false,
    parentElement: null,
    getAttribute(name) {
      if (name === 'class') return this.className;
      return '';
    },
    getBoundingClientRect() { return { left: 40, top: 720, width: 280, height: 48 }; },
  };
  const termsLink = {
    ...button,
    tagName: 'A',
    className: 'terms-link',
    textContent: 'Syarat & Ketentuan',
    innerText: 'Syarat & Ketentuan',
    getBoundingClientRect() { return { left: 120, top: 650, width: 120, height: 16 }; },
  };
  const api = new Function('button', 'termsLink', `
const window = {
  getComputedStyle() { return { display: 'block', visibility: 'visible', opacity: '1' }; },
  innerWidth: 390,
  innerHeight: 844,
};
const document = {
  querySelectorAll(selector) {
    return selector.includes('button') || selector.includes('a') || selector.includes('[role="button"]') ? [termsLink, button] : [];
  },
};
${bundle}
return { findContinueButton, getGoPayContinueTarget };
`)(button, termsLink);

  assert.equal(api.findContinueButton(), button);
  const target = api.getGoPayContinueTarget();
  assert.equal(target.found, true);
  assert.match(target.target, /Hubungkan/);
  assert.equal(target.rect.centerX, 180);
  assert.equal(target.rect.centerY, 744);
});


test('GoPay PIN page detection wins over generic pin-input OTP attributes', () => {
  const bundle = [
    extractFunction('normalizeText'),
    extractFunction('getActionText'),
    extractFunction('getPageBodyText'),
    extractFunction('isGoPayOtpPageText'),
    extractFunction('isGoPayPinPageText'),
    extractFunction('isGoPayPinInput'),
    extractFunction('isVisibleElement'),
    extractFunction('getVisibleControls'),
    extractFunction('isEnabledControl'),
    extractFunction('getVisibleTextInputs'),
    extractFunction('isCountrySearchInput'),
    extractFunction('getCombinedElementText'),
    extractFunction('findInputByPatterns'),
    extractFunction('findOtpInput'),
    extractFunction('getGoPayPinInputs'),
    extractFunction('findPinInput'),
    extractFunction('normalizeOtp'),
    extractFunction('fillVisibleOtpInputs'),
  ].join('\n');
  const pinInputs = Array.from({ length: 6 }, (_, index) => ({
    tagName: 'INPUT',
    type: 'text',
    id: '',
    className: 'pin-input password',
    textContent: '',
    value: '',
    placeholder: '○',
    maxLength: 1,
    disabled: false,
    hidden: false,
    parentElement: null,
    getAttribute(name) {
      if (name === 'maxlength') return '1';
      if (name === 'data-testid') return `pin-input-${index}`;
      if (name === 'class') return this.className;
      if (name === 'placeholder') return this.placeholder;
      return '';
    },
    getBoundingClientRect() { return { width: 40, height: 40 }; },
  }));
  const api = new Function('pinInputs', `
const location = { href: 'https://pin-web-client.gopayapi.com/auth/pin/verify' };
const window = { getComputedStyle() { return { display: 'block', visibility: 'visible', opacity: '1' }; } };
const document = {
  body: { innerText: 'Silakan ketik 6 digit PIN kamu buat lanjut. Lupa PIN', textContent: 'Silakan ketik 6 digit PIN kamu buat lanjut. Lupa PIN' },
  querySelectorAll(selector) { return selector.includes('input') ? pinInputs : []; },
};
${bundle}
return { isGoPayOtpPageText, isGoPayPinPageText, findOtpInput, findPinInput, getGoPayPinInputs, fillVisibleOtpInputs };
`)(pinInputs);

  assert.equal(api.isGoPayPinPageText(), true);
  assert.equal(api.isGoPayOtpPageText(), false);
  assert.equal(api.findOtpInput(), null);
  assert.equal(api.fillVisibleOtpInputs('123456'), false);
  assert.equal(api.findPinInput(), pinInputs[0]);
  assert.equal(api.getGoPayPinInputs().length, 6);
});


test('GoPay Pay now button is detected separately from generic continue actions', () => {
  const bundle = [
    extractFunction('normalizeText'),
    extractFunction('getActionText'),
    extractFunction('isVisibleElement'),
    extractFunction('getVisibleControls'),
    extractFunction('isEnabledControl'),
    extractFunction('findClickableByText'),
    extractFunction('findPayNowButton'),
    extractFunction('describeElement'),
    extractFunction('getElementClickRect'),
    extractFunction('getGoPayPayNowTarget'),
  ].join('\n');
  const payButton = {
    tagName: 'BUTTON',
    id: '',
    className: 'btn full primary btn-theme',
    textContent: 'Pay now',
    innerText: 'Pay now',
    value: '',
    disabled: false,
    hidden: false,
    parentElement: null,
    getAttribute(name) { return name === 'class' ? this.className : ''; },
    getBoundingClientRect() { return { left: 411, top: 689, width: 388, height: 38 }; },
  };
  const refreshButton = {
    ...payButton,
    className: 'refresh-button',
    textContent: 'Refresh',
    innerText: 'Refresh',
    getBoundingClientRect() { return { left: 705, top: 346, width: 90, height: 30 }; },
  };
  const api = new Function('payButton', 'refreshButton', `
const window = {
  getComputedStyle() { return { display: 'block', visibility: 'visible', opacity: '1' }; },
  innerWidth: 1280,
  innerHeight: 800,
};
const document = {
  querySelectorAll(selector) {
    return selector.includes('button') || selector.includes('[role="button"]') ? [refreshButton, payButton] : [];
  },
};
${bundle}
return { findPayNowButton, getGoPayPayNowTarget };
`)(payButton, refreshButton);

  assert.equal(api.findPayNowButton(), payButton);
  assert.equal(api.getGoPayPayNowTarget().found, true);
  assert.match(api.getGoPayPayNowTarget().target, /Pay now/);
});


test('GoPay final Bayar amount button is detected without matching terms link', () => {
  const bundle = [
    extractFunction('normalizeText'),
    extractFunction('getActionText'),
    extractFunction('isVisibleElement'),
    extractFunction('getVisibleControls'),
    extractFunction('isEnabledControl'),
    extractFunction('findClickableByText'),
    extractFunction('findPayNowButton'),
  ].join('\n');
  const bayarButton = {
    tagName: 'BUTTON',
    className: 'bg-brand text-white',
    textContent: 'Bayar\nRp 1',
    innerText: 'Bayar\nRp 1',
    value: '',
    disabled: false,
    hidden: false,
    parentElement: null,
    getAttribute(name) { return name === 'class' ? this.className : ''; },
    getBoundingClientRect() { return { left: 16, top: 556, width: 388, height: 44 }; },
  };
  const termsLink = {
    ...bayarButton,
    tagName: 'A',
    className: 'font-semibold text-brand cursor-pointer',
    textContent: 'Syarat & Ketentuan',
    innerText: 'Syarat & Ketentuan',
    getBoundingClientRect() { return { left: 224, top: 608, width: 104, height: 16 }; },
  };
  const api = new Function('bayarButton', 'termsLink', `
const window = {
  getComputedStyle() { return { display: 'block', visibility: 'visible', opacity: '1' }; },
};
const document = {
  querySelectorAll(selector) {
    return selector.includes('button') || selector.includes('a') || selector.includes('[role="button"]') ? [termsLink, bayarButton] : [];
  },
};
${bundle}
return { findPayNowButton };
`)(bayarButton, termsLink);

  assert.equal(api.findPayNowButton(), bayarButton);
});


test('GoPay terminal timeout page is reported as retry-required state', () => {
  const bundle = [
    extractFunction('normalizeText'),
    extractFunction('getActionText'),
    extractFunction('getPageBodyText'),
    extractFunction('isGoPayPinPageText'),
    extractFunction('isGoPayPinInput'),
    extractFunction('detectGoPayTerminalError'),
    extractFunction('isGoPayOtpPageText'),
    extractFunction('isVisibleElement'),
    extractFunction('getVisibleControls'),
    extractFunction('isEnabledControl'),
    extractFunction('getVisibleTextInputs'),
    extractFunction('findInputByPatterns'),
    extractFunction('findPhoneInput'),
    extractFunction('isCountrySearchInput'),
    extractFunction('findOtpInput'),
    extractFunction('getCombinedElementText'),
    extractFunction('getGoPayPinInputs'),
    extractFunction('findPinInput'),
    extractFunction('findClickableByText'),
    extractFunction('findPayNowButton'),
    extractFunction('findContinueButton'),
    extractFunction('readSelectedCountryCodeText'),
    extractFunction('inspectGoPayState'),
  ].join('\n');
  const api = new Function(`
const location = { href: 'https://merchants-gws-app.gopayapi.com/app/challenge?reference=test' };
const window = { getComputedStyle() { return { display: 'none', visibility: 'hidden', opacity: '0' }; } };
const document = {
  body: { innerText: 'Yah, waktunya habis\\nKalau kamu mau coba lagi, tutup halaman ini dan ulangi prosesnya dari awal, ya.', textContent: '' },
  readyState: 'complete',
  querySelectorAll() { return []; },
};
${bundle}
return { inspectGoPayState, detectGoPayTerminalError };
`)();

  const state = api.inspectGoPayState();
  assert.equal(state.hasTerminalError, true);
  assert.equal(state.terminalError.code, 'expired');
  assert.match(state.terminalError.message, /重新创建 Plus Checkout|超时/);
});