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

const proposalsModel = getModel('proposals');
const loadsModel = getModel('loads');
const usersModel = getModel('users');
const companiesModel = getModel('companies');
const notificationsModel = getModel('notifications');


/**
 * When the proposal is created then the load owner should be notified
 * @param {*} id 
 * @param {*} newProposalData 
 * @returns 
 */
async function onPostEvent( id , newProposalData ){
    const proposal = await proposalsModel.findById( id );
    const load = await loadsModel.findById( proposal.load );
    const user = await usersModel.findById( load.posted_by );

    const notification = new notificationsModel({
        "owner": user.id,
        "title": "New proposal",
        "description": `${load.shipment_code}`,
        "tag":"new_proposal",
        "deleted":false
    });

    await notification.save();
}

/**
 * When the proposal is accepted then the load should be updated to have the latest
 * shipper, vehicle, etc.
 * @param {*} id 
 * @param {*} newProposalData 
 * @returns 
 */
async function onPatchEvent( id , newProposalData ){
    const proposal = await proposalsModel.findById( id );
    if( !newProposalData.is_accepted ){
        const load = await loadsModel.findById( proposal.load );
        /// Update Proposal:
        /// Remove shipper
        await proposalsModel.findByIdAndUpdate( id , {
            shipper : null
        } );
    
        /// Update Load:
        /// Remove carrier, driver and vehicle
        await loadsModel.findByIdAndUpdate( proposal.load, {
            carrier : null,
            driver : null,
            vehicle : null,
        } );

        const notification = new notificationsModel({
            "owner": user.id,
            "title": `Your proposal has been accepted!`,
            "description": `${load.shipment_code}`,
            "tag":"accepted_proposal",
            "deleted":false
        });
    }else{
        const shipper_user = await usersModel.findById( proposal.accepted_by );
        const shipper = await companiesModel.findById( shipper_user.company );
        const vehicle  = await vehiclesModel.findById( proposal.vehicle );
        /// Update Proposal:
        /// Adding shipper to proposal
        await proposalsModel.findByIdAndUpdate( id , {
            shipper : shipper.id
        } );
    
        /// Update Load:
        /// Add carrier, driver and vehicle
        await loadsModel.findByIdAndUpdate( proposal.load, {
            carrier : proposal.carrier,
            driver : vehicle.driver,
            vehicle : proposal.vehicle,
        } );
    }
}

module.exports = { onPostEvent, onPatchEvent };