const express = require('express');

const idhmeApp = express.Router();

const libs = `${process.cwd()}/libs`;

const squel = require('squel');

const query = require(`${libs}/middlewares/query`);

const response = require(`${libs}/middlewares/response`);

const id2str = require(`${libs}/middlewares/id2str`);

const ReqQueryFields = require(`${libs}/middlewares/reqQueryFields`);

let rqf = new ReqQueryFields();

rqf.addField({
    name: 'filter',
    field: false,
    where: true
}).addValue({
    name: 'city',
    table: 'municipio',
    tableField: 'nome',
    resultField: 'city_name',
    where: {
        relation: '=',
        type: 'integer',
        field: 'municipio_id',
        table: 'adh_idh'
    },
    join: {
        primary: 'id',
        foreign: 'municipio_id',
        foreignTable: 'adh_idh'
    }
}).addValue({
    name: 'state',
    table: 'estado',
    tableField: 'nome',
    resultField: 'state_name',
    where: {
        relation: '=',
        type: 'integer',
        field: 'estado_id',
        table: 'adh_idh_uf'
    },
    join: {
        primary: 'id',
        foreign: 'estado_id',
        foreignTable: 'adh_idh_uf'
    }
}).addValue({
    name: 'year',
    table: 'adh_idh',
    tableField: 'ano_censo',
    resultField: 'year',
    where: {
        relation: '=',
        type: 'integer',
        field: 'ano_censo',
        table: 'adh_idh'
    }
});

idhmeApp.get('/', rqf.parse(), rqf.build(),  (req, res, next) => {
    if(typeof req.filter === 'undefined' || Object.keys(req.filter).length === 0) {
        res.status(400);
        next({
            status: 400,
            message: 'Wrong/No filter specified'
        });
    }
    if ("state" in req.filter) {
        // console.log("sim");
        req.sql.from('adh_idh_uf')
        .field('adh_idh_uf.idhm_e', 'IDHME')
        .field('adh_idh_uf.ano_censo', 'year')
        .field('adh_idh_uf.estado_id', 'state_id');
        next();
    } else if ("city" in req.filter) {
        req.sql.from('adh_idh')
        .field('adh_idh.idhm_e', 'IDHME')
        .field('adh_idh.ano_censo', 'year')
        .field('adh_idh.municipio_id', 'city_id');
        next();
    }
}, query, response('idhme'));

module.exports = idhmeApp;