'user strict';
const { getModel } = require( '../../../Models' );

const loadsModel = getModel('loads');
const vehiclesModel = getModel('vehicles');
const proposalsModel = getModel('proposals');

/**
 * When a load is delivered, notify all involved parties
 * @param {*} userId -> Responsible of the change
 * @param {*} elementId -> Element Affected
 */
async function onDelivered( userId, elementId ){
    const load  = await loadsModel.findById( elementId );
    const proposal_list = await proposalsModel.find({
        load: elementId,
        is_accepted: true,
        is_completed: false
    });
    const vehicle_list = await vehiclesModel.find({
        active_load: elementId
    });

    const current_date = new Date();

    /// Update Load: Remove vehicle and driver reference for data safety.
    await loadsModel.findByIdAndUpdate( elementId, {
        driver: null,
        vehicle: null,
        status: "Closed",
        delivered_date: current_date,
        load_status_updated: current_date,
    });

    /// Update proposals related to this load. Ideally, just one.
    // remove vehicle for data safety.
    for( const proposal of proposal_list ){
        await proposalsModel.findByIdAndUpdate(
            proposal.id,
            {
                is_completed : true,
                vehicle : null,
            }
        );
    }

    /// Update vehicles related to this load. Ideally, just one.
    for( const vehicle of vehicle_list ){
        await vehiclesModel.findByIdAndUpdate(
            vehicle.id,
            {
                active_load: null,
                load_shipper: null,
                status: "Free"
            }
        );
    }
}

module.exports = { onDelivered };