const { fetchCommentsFromServiceNow, fetchTicketLiveStatusFromServiceNow } = require('../services/servicenowService');
const { syncCommentsGlpitoSN, syncCommentsSNtoGlpi } = require('../services/glpiCommentService');
const TicketSyncModel = require('../models/ticketSyncModel');
const TicketSnModel = require('../models/ticketSnModel');
const TicketGlpiModel = require('../models/ticketGlpiModel');
const { logInfo } = require('../utils/logger');

const ensureReopenFromSNWhenGlpiSolved = async (ticket) => {
    const glpiStatus = await TicketGlpiModel.getTicketStatus(ticket.glpi_ticket_id);
    const glpiIsSolved = glpiStatus === 5;
    if (!glpiIsSolved) {
        return { reopened: false, glpiSolved: false };
    }

    // CORREÇÃO: Verificar se o ticket foi fechado recentemente.
    // Se o status já é 'solved', significa que o processGlpiClosureController
    // tentou fechar recentemente. O SN pode ainda estar processando o close,
    // então ignoramos a detecção de reopen para evitar falsos positivos.
    if (ticket.glpi_sync_status === 'solved' || ticket.sn_sync_status === 'solved') {
        logInfo(`Ticket GLPI ${ticket.glpi_ticket_id} fechou recentemente (status: ${ticket.glpi_sync_status}/${ticket.sn_sync_status}). Ignorando verificacao de reopen.`);
        return { reopened: false, glpiSolved: true };
    }

    const ticketSn = await TicketSnModel.findById(ticket.sn_ticket_id);
    if (!ticketSn) {
        return { reopened: false, glpiSolved: true };
    }

    const liveSnStatus = await fetchTicketLiveStatusFromServiceNow(ticketSn.sys_id, ticketSn.tipo);
    const snIsFinal = liveSnStatus === 'Resolvido' || liveSnStatus === 'Encerrado' || liveSnStatus === 'Encerrado - Omitido';
    if (snIsFinal) {
        return { reopened: false, glpiSolved: true };
    }

    await TicketGlpiModel.updateStatus(ticket.glpi_ticket_id, 'Em Atendimento');
    await TicketSyncModel.updateStatus(ticket.sn_ticket_id, 'synced', 'synced');
    logInfo(`Reabertura detectada no SN para ticket ${ticket.sn_ticket_id}. GLPI ${ticket.glpi_ticket_id} retornou para Em Atendimento.`);
    return { reopened: true, glpiSolved: true };
};

const processCommentsController = async () => {
    const ticketsToMonitor = await TicketSyncModel.getTicketsToMonitor();
    logInfo(`Tickets em monitoramento: ${ticketsToMonitor.length}`);

    for (const ticket of ticketsToMonitor) {
        const reopenState = await ensureReopenFromSNWhenGlpiSolved(ticket);
        const reopenedThisCycle = reopenState.reopened;
        const glpiWasSolved = reopenState.glpiSolved;
        if (glpiWasSolved && !reopenedThisCycle) {
            logInfo(`Ticket ${ticket.glpi_ticket_id} permanece Solucionado no GLPI. Comentarios SN -> GLPI bloqueados ate reabertura.`);
            await syncCommentsGlpitoSN(ticket);
            continue;
        }

        const comments = await fetchCommentsFromServiceNow(ticket);
        if (comments.length !== 0) {
            await syncCommentsSNtoGlpi(comments, ticket, { highlightReopenContext: reopenedThisCycle });
        }

        await syncCommentsGlpitoSN(ticket);
    }
};

module.exports = {
    processCommentsController
};