"use strict";
const { ROOT_PATH, LIB_PATH, MODELS_PATH, HANDLERS_PATH } = process.env;
const { getModel } = require( `${ROOT_PATH}/${MODELS_PATH}` );
const { getPagination } = require( `${ROOT_PATH}/${LIB_PATH}/Misc.js` );
const { GenericHandler } = require( `${ROOT_PATH}/${HANDLERS_PATH}/Generic.handler.js` );
const Model = getModel('branches');

const populate_list = ['company', 'categories'];
const generic = new GenericHandler( Model, null, populate_list );

function getAndFilterList( query ){
    const filter_list = [];
    const {
        categories,
        branch_name,
        phone,
        city,
        state,
        truck_type,
        type,
        zipcode,
        alert_list,
    } = query;

    if( categories ) { filter_list.push({ categories }); }
    if( branch_name ) { filter_list.push({ branch_name }); }
    if( phone ) { filter_list.push({ phone }); }
    if( city ) { filter_list.push({ city }); }
    if( state ) { filter_list.push({ state }); }
    if( truck_type ) { filter_list.push({ truck_type }); }
    if( type ) { filter_list.push({ type }); }
    if( zipcode ) { filter_list.push({ zipcode }); }
    if( alert_list ) { filter_list.push({ alert_list }); }

    if( filter_list.length == 0 ){
        return null;
    }
    return filter_list;
}

async function findElements( companyId , query ){
    const { page, elements } = getPagination( query );
    const andFilterList = getAndFilterList( query );
    let filter;
    if( andFilterList ){
        andFilterList.push({ company : companyId });
        filter = { $and : andFilterList };
    }else{
        filter = { company : companyId };
    }
    const { total , limit, skip, data  } = await generic.getList( page , elements, filter );
    const list_elements = data;
    // for(let i=0; i<list_elements.length; i++){
    //     const item = list_elements[i].toObject();
    //     if (item.categories) {
    //         let categories = item.categories.map((c) => c.name);
    //         item._categories = categories.join(", ");
    //     }
    //     if (item.truck_type) {
    //         item._truck_types = item.truck_type.join(", ");
    //     }
    //     list_elements[i] = item;
    // }
    return {
        total,
        limit,
        skip,
        data:list_elements
    };
}

async function findElementById( elementId , companyId ){
    const filter = {
        $and : [
            { _id : elementId },
            { company : companyId }
        ]
    };
    let retVal = await Model.findOne( filter ).populate( populate_list ) || {};
    return retVal;
}

const findList = async(req, res) => {
    try{
        const query  = req.query || {};
        const companyId = req.context.companyId;
        const retVal = await findElements( companyId , query );
        res.send( retVal );
    }catch(error){
        console.error( error );
        return res.status( 500 ).send({ error });
    }
};

const getById = async(req, res) => {
    try{
        const companyId = req.context.companyId;
        const elementId = req.params.id;
        res.send( await findElementById( elementId , companyId ) );
    }catch(error){
        console.error( error );
        return res.status( 500 ).send({ error });
    }
};

const patchBranch = async(req, res) => {
    try{
        const companyId = req.context.companyId;
        const elementId = req.params.id;
        const data = req.body;
        const branch = await findElementById( elementId , companyId );
        if( !branch ){
            throw "You can't modify this branch";
        }
        if( !data ){
            throw "load data not sent";
        }
        data.company = companyId;
        await Model.findByIdAndUpdate( elementId , data );
        return res.send( await Model.findById( elementId ) );
    }catch(error){
        console.error( error );
        return res.status( 500 ).send({ error });
    }
};

const postBranch = async(req, res) => {
    try{
        const companyId = req.context.companyId;
        const data = req.body;
        if( !data ){
            throw "Branch data not sent";
        }
        data.company = companyId;
        const branch = new Model( data );
        await branch.save();
        return res.send( branch );
    }catch(error){
        console.error( error );
        return res.status( 500 ).send({ error });
    }
};

const deleteBranch = async(req, res) => {
    try{
        const companyId = req.context.companyId;
        const elementId = req.params.id;
        const element = await findElementById( elementId , companyId );
        if(!element){
            throw "You can't delete this branch";
        }
        await Model.findByIdAndDelete( elementId );
        return res.send(element);
    }catch(error){
        console.error( error );
        return res.status( 500 ).send({ error });
    }
};

module.exports = { findList, getById, patchBranch, postBranch, deleteBranch };