// worker-multi-estado.js
'use strict';

const { chromium } = require('playwright');
const admin = require('firebase-admin');

// --- CONFIGURACIÓN ---
const CONFIG = {
  QUEUE_COLLECTION: 'multiasistencia_cambios_estado',
  RESULT_COLLECTION: 'multiasistencia_cambios_estado_log',
  MULTI_LOGIN: "https://web.multiasistencia.com/w3multi/acceso.php",
  MULTI_ACTION_BASE: "https://web.multiasistencia.com/w3multi/fechaccion.php",
  NAV_TIMEOUT: 60000,
  RESCAN_SECONDS: 60
};

// --- UTILS ---
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
function toServerTimestamp() { return admin.firestore.FieldValue.serverTimestamp(); }

// Conversor de Hora
function timeToMultiValue(timeStr) {
    if (!timeStr) return "";
    const [h, m] = timeStr.split(':').map(Number);
    return String((h * 3600) + (m * 60));
}

// --- FIREBASE INIT ---
function initFirebase() {
  if (!process.env.FIREBASE_PRIVATE_KEY) throw new Error('Missing FIREBASE_PRIVATE_KEY');
  if (!admin.apps.length) {
    admin.initializeApp({
      credential: admin.credential.cert({
        projectId: process.env.FIREBASE_PROJECT_ID,
        clientEmail: process.env.FIREBASE_CLIENT_EMAIL,
        privateKey: process.env.FIREBASE_PRIVATE_KEY.replace(/\\n/g, '\n'),
      }),
    });
  }
  return admin.firestore();
}

// --- LOGIN ---
async function loginMulti(page, db) {
  let user = "", pass = "";
  const doc = await db.collection("providerCredentials").doc("multiasistencia").get();
  if (doc.exists) { user = doc.data().user; pass = doc.data().pass; }
  
  if (!user) throw new Error("Faltan credenciales en providerCredentials/multiasistencia");
  
  console.log('🔐 Login en Multiasistencia...');
  await page.goto(CONFIG.MULTI_LOGIN, { timeout: 60000, waitUntil: 'domcontentloaded' });
  
  const userFilled = await page.evaluate((u) => {
    const el = document.querySelector('input[name="usuario"]') || document.querySelector('input[type="text"]');
    if (el) { el.value = u; el.dispatchEvent(new Event('input', { bubbles: true })); return true; }
    return false;
  }, user);
  
  if (!userFilled) await page.fill('input[name="usuario"]', user);
  await page.fill('input[type="password"]', pass);
  await page.click('input[type="submit"]');
  await page.waitForTimeout(4000);
}

// --- PLAYWRIGHT SETUP ---
async function withBrowser(fn) {
  const browser = await chromium.launch({ headless: true, args: ['--no-sandbox'] });
  const context = await browser.newContext();
  const page = await context.newPage();
  try { return await fn(page); } finally { await browser.close().catch(() => {}); }
}

// --- HELPERS DE EVENTOS ---
async function forceUpdate(elementHandle) {
    if (elementHandle) {
        await elementHandle.evaluate(el => {
            el.dispatchEvent(new Event('input', { bubbles: true }));
            el.dispatchEvent(new Event('change', { bubbles: true }));
            el.dispatchEvent(new Event('blur', { bubbles: true }));
        });
    }
}

// --- LÓGICA PRINCIPAL ---
async function processChangeState(page, db, jobData) {
    const { serviceNumber, reasonValue, comment, dateStr, timeStr } = jobData;

    // 1. LOGIN
    await loginMulti(page, db);

    // 2. IR AL SERVICIO
    const targetUrl = `${CONFIG.MULTI_ACTION_BASE}?reparacion=${serviceNumber}&modo=0&navid=%2Fw3multi%2Ffrepasos_new.php%FDGET%FDrefresh%3D1%FC`;
    console.log(`📂 Abriendo servicio ${serviceNumber}...`);
    await page.goto(targetUrl, { waitUntil: 'domcontentloaded', timeout: 60000 });
    
    // Esperar formulario
    await page.waitForSelector('select.answer-select', { timeout: 20000 });
    await page.waitForTimeout(1500); 

    console.log('📝 Rellenando formulario...');

    // 3. MOTIVO
    const reasonSel = page.locator('select.answer-select').first();
    await reasonSel.selectOption(String(reasonValue));
    await forceUpdate(await reasonSel.elementHandle());

    // 4. COMENTARIO
    if (comment) {
        const commentBox = page.locator('textarea[formcontrolname="comment"]');
        await commentBox.fill(comment);
        await forceUpdate(await commentBox.elementHandle());
    }

    // 5. FECHA
    if (dateStr) {
        const dateInput = page.locator('input[type="date"]').first();
        await dateInput.fill(dateStr);
        await forceUpdate(await dateInput.elementHandle());
        await page.click('body');
    }

    // 6. HORA
    if (timeStr) {
        const secondsValue = timeToMultiValue(timeStr);
        const timeSelectHandle = await page.$(`xpath=//select[.//option[@value="${secondsValue}"]]`);

        if (timeSelectHandle) {
            await timeSelectHandle.selectOption(secondsValue);
            await forceUpdate(timeSelectHandle);
        } else {
            const allSelects = await page.$$('select');
            if (allSelects.length > 1) {
                await allSelects[1].selectOption(secondsValue).catch(() => {});
                await forceUpdate(allSelects[1]);
            }
        }
    }

    await page.waitForTimeout(2000);

    // 7. GUARDAR
    const btn = page.locator('button.form-container-button-submit');
    
    if (await btn.isDisabled()) {
        console.log('⛔ Botón deshabilitado. Intentando reactivar...');
        await page.click('textarea[formcontrolname="comment"]');
        await page.keyboard.press('Tab');
        await page.waitForTimeout(1000);
        
        if (await btn.isDisabled()) {
            throw new Error(`IMPOSIBLE GUARDAR: Formulario bloqueado.`);
        }
    }

    console.log('💾 Click en Guardar...');
    await btn.click();
    
    // 8. GESTIÓN DE ALERTAS Y CONFIRMACIÓN
    console.log('👀 Esperando mensajes o confirmaciones...');
    
    // Esperamos un poco para que salga el Popup si tiene que salir
    await page.waitForTimeout(2000);

    // Buscamos el botón "Sí"
    const confirmBtn = page.locator('button.form-container-button-submit-toast').filter({ hasText: 'Sí' });

    if (await confirmBtn.count() > 0 && await confirmBtn.isVisible()) {
        console.log('🚨 ALERTA SMS DETECTADA. Pulsando "Sí"...');
        await confirmBtn.click();
        // Esperamos a que la acción se procese tras el "Sí"
        await page.waitForTimeout(3000); 
    } else {
        console.log('ℹ️ No hubo alerta de SMS (o se procesó rápido).');
    }

    // 9. VERIFICACIÓN FINAL (LO QUE PEDISTE)
    // Esperamos explícitamente a que aparezca un mensaje de éxito o error
    try {
        await page.waitForSelector('.form-container-success, .form-container-error, encastrables-success-error-message', { timeout: 10000 });
    } catch (e) {
        console.log("⏳ Tiempo de espera agotado buscando mensaje. Analizando pantalla...");
    }

    // Leemos el texto exacto
    const finalResult = await page.evaluate(() => {
        // Selector verde (Exito)
        const successEl = document.querySelector('.form-container-success') || document.querySelector('.bg-success');
        // Selector rojo (Error)
        const errorEl = document.querySelector('.form-container-error') || document.querySelector('.bg-danger');
        // Selector genérico
        const msgEl = document.querySelector('encastrables-success-error-message');
        const infoMsg = document.querySelector('.form-container-message-info');

        if (successEl && successEl.innerText.length > 2) return { type: 'OK', text: successEl.innerText };
        if (errorEl && errorEl.innerText.length > 2) return { type: 'ERROR', text: errorEl.innerText };
        if (msgEl && msgEl.innerText.length > 2) return { type: 'INFO', text: msgEl.innerText };
        if (infoMsg && infoMsg.innerText.length > 2) return { type: 'INFO', text: infoMsg.innerText };
        
        return { type: 'UNKNOWN', text: document.body.innerText.substring(0, 200) }; // Fallback
    });

    console.log(`🏁 RESULTADO FINAL: [${finalResult.type}] "${finalResult.text.replace(/\n/g, ' ')}"`);

    // Validamos según tu petición
    if (finalResult.type === 'OK' || finalResult.text.includes('correctamente')) {
        return { success: true, message: finalResult.text };
    } else if (finalResult.type === 'ERROR') {
        throw new Error(`WEB ERROR: ${finalResult.text}`);
    } else {
        // Si no es ni verde ni rojo claro, devolvemos lo que vemos para que tú juzgues
        return { success: true, warning: `No vi mensaje verde, pero tampoco rojo. Pantalla dice: ${finalResult.text.substring(0,100)}...` };
    }
}

// --- WORKER LOOP ---
async function claimJobById(db, jobId) {
    const ref = db.collection(CONFIG.QUEUE_COLLECTION).doc(jobId);
    return await db.runTransaction(async (tx) => {
      const snap = await tx.get(ref);
      if (!snap.exists || snap.data().status !== 'PENDING') return null;
      tx.set(ref, { status: 'RUNNING', claimedAt: toServerTimestamp() }, { merge: true });
      return { id: jobId, ...snap.data() };
    });
}

async function markJobDone(db, jobId, result) {
    await db.collection(CONFIG.QUEUE_COLLECTION).doc(jobId).set({ status: 'DONE', result }, { merge: true });
    await db.collection(CONFIG.RESULT_COLLECTION).add({ jobId, ok: true, ...result, createdAt: toServerTimestamp() });
}

async function markJobFailed(db, jobId, err) {
    await db.collection(CONFIG.QUEUE_COLLECTION).doc(jobId).set({ 
        status: 'FAILED', 
        error: { message: err.message } 
    }, { merge: true });
    await db.collection(CONFIG.RESULT_COLLECTION).add({ jobId, ok: false, error: err.message, createdAt: toServerTimestamp() });
}

async function processJob(db, job) {
  console.log(`>>> Procesando Job: ${job.id}`);
  try {
    await withBrowser(async (page) => {
      const res = await processChangeState(page, db, {
        serviceNumber: job.serviceNumber,
        reasonValue: job.reasonValue,
        comment: job.comment,
        dateStr: job.dateStr,
        timeStr: job.timeStr
      });
      await markJobDone(db, job.id, res);
      console.log(`✅ Job ${job.id} Completado: ${res.message || 'OK'}`);
    });
  } catch (err) {
    console.error(`❌ Job ${job.id} Falló:`, err.message);
    await markJobFailed(db, job.id, err);
  }
}

function startWorker(db) {
  const queue = [];
  const run = async () => { 
      while(queue.length) { await processJob(db, await claimJobById(db, queue.shift())); } 
  };
  db.collection(CONFIG.QUEUE_COLLECTION).where('status', '==', 'PENDING').onSnapshot(s => {
      s.docChanges().forEach(c => { if(c.type==='added') { queue.push(c.doc.id); run(); } });
  });
  console.log('🚀 Worker Multiasistencia (V4 - VERIFICACION ESTRICTA) LISTO.');
}

const db = initFirebase();
startWorker(db);