// worker-multi-estado.js (V9 - ADAPTADOR PARA TU APP + FECHA CONTACTO AUTO)
'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();
}

function timeToMultiValue(timeStr) {
    if (!timeStr) return "";
    const [h, m] = timeStr.split(':').map(Number);
    // Para el desplegable principal (segundos desde medianoche)
    return String((h * 3600) + (m * 60));
}

// Helper: Extraer hora de un texto (Ej: "cita a las 13:00") -> "13:00"
function extractTimeFromText(text) {
    if (!text) return null;
    const match = text.match(/(\d{1,2}:\d{2})/);
    return match ? match[1] : null;
}

// Helper: Convertir DD/MM/YYYY a YYYY-MM-DD
function normalizeDate(dateStr) {
    if (!dateStr) return "";
    // Si ya viene como YYYY-MM-DD, devolver tal cual
    if (dateStr.match(/^\d{4}-\d{2}-\d{2}$/)) return dateStr;
    
    // Si viene como DD/MM/YYYY
    if (dateStr.includes('/')) {
        const [day, month, year] = dateStr.split('/');
        return `${year}-${month}-${day}`;
    }
    return dateStr;
}

// Obtener fecha y hora actuales desglosadas (Sistema)
function getCurrentDateTime() {
    const now = new Date();
    const year = now.getFullYear();
    const month = String(now.getMonth() + 1).padStart(2, '0');
    const day = String(now.getDate()).padStart(2, '0');
    
    const dateStr = `${year}-${month}-${day}`;
    const hourStr = String(now.getHours()); 
    const minStr = String(now.getMinutes()).padStart(2, '0');

    return { dateStr, hourStr, minStr };
}

// --- 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(() => {}); }
}

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) {
    // --- ADAPTADOR DE DATOS (MAPPING) ---
    // Tu App envía 'nuevoEstado', 'observaciones', 'fecha' (DD/MM/YYYY)
    
    const serviceNumber = jobData.serviceNumber;
    
    // 1. Mapear Motivo
    const reasonValue = jobData.reasonValue || jobData.nuevoEstado || jobData.estado;
    
    // 2. Mapear Comentario
    const comment = jobData.comment || jobData.observaciones || jobData.nota;
    
    // 3. Mapear y Normalizar Fecha (DD/MM/YYYY -> YYYY-MM-DD)
    const rawDate = jobData.dateStr || jobData.fecha;
    const dateStr = normalizeDate(rawDate);
    
    // 4. Mapear Hora (Intentar buscar en timeStr, o extraer de la nota)
    let timeStr = jobData.timeStr || extractTimeFromText(comment);
    
    console.log(`🔧 DATOS PROCESADOS: ID:${reasonValue} | Fecha:${dateStr} | Hora:${timeStr}`);

    // VALIDACIÓN
    if (!reasonValue || reasonValue === 'undefined') {
        throw new Error("DATOS FALTANTES: No se encontró 'nuevoEstado' ni 'reasonValue' en Firebase.");
    }

    // -----------------------------------------------------------

    // 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 });
    
    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();
    const targetValue = String(reasonValue);

    // Diagnóstico rápido
    const availableOptions = await reasonSel.evaluate((select) => {
        return Array.from(select.options).map(o => ({ value: o.value, text: o.innerText.trim() }));
    });
    const optionExists = availableOptions.find(o => o.value === targetValue);

    if (!optionExists) {
        const validList = availableOptions.map(o => `[${o.value}: ${o.text}]`).join(', ');
        throw new Error(`MOTIVO INVÁLIDO: El ID "${targetValue}" no existe. Opciones: ${validList}`);
    }

    await reasonSel.selectOption(targetValue);
    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 SIGUIENTE ACCIÓN (Solo si hay fecha futura)
    if (dateStr) {
        // Bloque TXTFACCION (preferido)
        const actionBlock = page.locator('encastrables-date-hour-field[label="TXTFACCION"]');
        
        if (await actionBlock.count() > 0) {
            const dateInput = actionBlock.locator('input[type="date"]');
            await dateInput.fill(dateStr);
            await forceUpdate(await dateInput.elementHandle());
            await page.click('body'); 
            
            // Hora (Solo si la hemos detectado)
            if (timeStr) {
                const secondsValue = timeToMultiValue(timeStr);
                const timeSelect = actionBlock.locator('select.answer-select');
                // Intentamos seleccionar, si falla (ej: hora no válida) no rompemos el flujo
                await timeSelect.selectOption(secondsValue).catch(() => console.log(`⚠️ Hora ${timeStr} no válida en desplegable`));
                await forceUpdate(await timeSelect.elementHandle());
            }
        } else {
            // Fallback genérico
            const genericDateInput = page.locator('input[type="date"]').first();
            await genericDateInput.fill(dateStr);
            await forceUpdate(await genericDateInput.elementHandle());
        }
    }

    // 6. HISTÓRICO / FECHA CONTACTO (AUTOMÁTICO - SIEMPRE HOY)
    const contactBlock = page.locator('encastrables-date-hour-field[label="TXTFCONTACTO"]');
    
    if (await contactBlock.count() > 0 && await contactBlock.isVisible()) {
        console.log('📞 Rellenando "Fecha contacto cliente" con FECHA ACTUAL...');
        const now = getCurrentDateTime(); 
        
        // Fecha
        const contactDateInput = contactBlock.locator('input[type="date"]');
        await contactDateInput.fill(now.dateStr);
        await forceUpdate(await contactDateInput.elementHandle());

        // Hora y Minutos
        const selects = contactBlock.locator('select.answer-select-time');
        if (await selects.count() >= 2) {
            await selects.nth(0).selectOption(now.hourStr).catch(() => {});
            await forceUpdate(await selects.nth(0).elementHandle());

            await selects.nth(1).selectOption(now.minStr).catch(() => {});
            await forceUpdate(await selects.nth(1).elementHandle());
        }
    }

    await page.waitForTimeout(2000);

    // 7. GUARDAR
    const btn = page.locator('button.form-container-button-submit');
    
    if (await btn.isDisabled()) {
        console.log('⛔ Botón deshabilitado. Reintentando...');
        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. ALERTAS
    await page.waitForTimeout(3000);
    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. Confirmando...');
        await confirmBtn.click();
        await page.waitForTimeout(3000); 
    }

    // 9. VERIFICACIÓN
    const screenshotBuffer = await page.screenshot({ fullPage: true, quality: 50, type: 'jpeg' });
    const screenshotBase64 = screenshotBuffer.toString('base64');

    const finalResult = await page.evaluate(() => {
        const successEl = document.querySelector('.form-container-success') || document.querySelector('.bg-success');
        const errorEl = document.querySelector('.form-container-error') || document.querySelector('.bg-danger');
        if (successEl) return { type: 'OK', text: successEl.innerText };
        if (errorEl) return { type: 'ERROR', text: errorEl.innerText };
        return { type: 'UNKNOWN', text: document.body.innerText.substring(0, 300) };
    });

    console.log(`🏁 RESULTADO: [${finalResult.type}]`);

    return { 
        success: (finalResult.type === 'OK' || finalResult.text.includes('correctamente')), 
        message: finalResult.text,
        screenshot: screenshotBase64 
    };
}

// --- 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, job, result) {
    const jobId = job.id;
    await db.collection(CONFIG.QUEUE_COLLECTION).doc(jobId).set({ status: 'DONE', result }, { merge: true });

    await db.collection(CONFIG.RESULT_COLLECTION).add({ 
        jobId, 
        ok: true, 
        serviceNumber: job.serviceNumber || '',
        reason: job.nuevoEstado || job.estado || '', // Adaptado al log
        comment: job.observaciones || job.nota || '', // Adaptado al log
        ...result, 
        createdAt: toServerTimestamp() 
    });
}

async function markJobFailed(db, job, err) {
    const jobId = job.id;
    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, 
        serviceNumber: job.serviceNumber || '',
        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, job); // Pasamos todo el objeto 'job'
      await markJobDone(db, job, res);
      console.log(`✅ Job ${job.id} Completado.`);
    });
  } catch (err) {
    console.error(`❌ Job ${job.id} Falló:`, err.message);
    await markJobFailed(db, job, 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 (V9 - ADAPTADOR APP) LISTO.');
}

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