const express = require('express');

const infrastructureApp = express.Router();

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

const log = require(`${libs}/log`)(module);

const squel = require('squel');

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

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

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

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

const cache = require('apicache').options({ debug: config.debug, statusCodes: {include: [200]} }).middleware;

let rqf = new ReqQueryFields();

infrastructureApp.use(cache('15 day'));

infrastructureApp.get('/year_range', cache('15 day'), (req, res, next) => {
    req.sql.from('escola')
    .field('MIN(escola.ano_censo)', 'start_year')
    .field('MAX(escola.ano_censo)', 'end_year')
    .where('escola.ano_censo > 2014');
    next();
}, query, response('range'));

infrastructureApp.get('/years', cache('15 day'), (req, res, next) => {
    req.sql.from('escola').
    field('DISTINCT escola.ano_censo', 'year')
    .where('escola.ano_censo > 2014');
    next();
}, query, response('years'));

infrastructureApp.get('/source', (req, res, next) => {
    req.sql.from('fonte')
    .field('fonte', 'source')
    .where('tabela = \'escola\'');
    next();
}, query, response('source'));

infrastructureApp.get('/location', cache('15 day'), (req, res, next) => {
    req.result = [
        {id: 1, name: 'Urbana'},
        {id: 2, name: 'Rural'}
    ];
    next();
}, response('location'));

//TODO: location_detailed

infrastructureApp.get('/adm_dependency', (req, res, next) => {
    req.sql.from('dependencia_adm')
    .field('id')
    .field('nome', 'name')
    .where('id <= 4');
    next();
}, query, response('adm_dependency'));

infrastructureApp.get('/adm_dependency_detailed', cache('15 day'), (req, res, next) => {
    req.sql.from('dependencia_adm_priv')
    .field('id', 'id')
    .field('nome', 'name');
    next();
}, query, response('adm_dependency_detailed'));

rqf.addField({
    name: 'filter',
    field: false,
    where: true
}).addField({
    name: 'dims',
    field: true,
    where: false
}).addValueToField({
    name: 'city',
    table: 'municipio',
    tableField: ['nome', 'id'],
    resultField: ['city_name', 'city_id'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'municipio_id',
        table: 'escola'
    },
    join: {
        primary: 'id',
        foreign: 'municipio_id',
        foreignTable: 'escola'
    }
}, 'dims').addValueToField({
    name: 'city',
    table: 'municipio',
    tableField: 'nome',
    resultField: 'city_name',
    where: {
        relation: '=',
        type: 'integer',
        field: 'municipio_id',
        table: 'escola'
    },
    join: {
        primary: 'id',
        foreign: 'municipio_id',
        foreignTable: 'escola'
    }
}, 'filter').addValue({
    name: 'state',
    table: 'estado',
    tableField: 'nome',
    resultField: 'state_name',
    where: {
        relation: '=',
        type: 'integer',
        field: 'estado_id',
        table: 'escola'
    },
    join: {
        primary: 'id',
        foreign: 'estado_id',
        foreignTable: 'escola'
    }
}).addValue({
    name: 'region',
    table: 'regiao',
    tableField: 'nome',
    resultField: 'region_name',
    where: {
        relation: '=',
        type: 'integer',
        field: 'id'
    },
    join: {
        primary: 'id',
        foreign: 'regiao_id',
        foreignTable: 'escola'
    }
}).addValue({
    name: 'year',
    table: 'escola',
    tableField: 'ano_censo',
    resultField: 'year',
    where: {
        relation: '=',
        type: 'integer',
        field: 'ano_censo',
        table: 'escola'
    }
}).addValue({
    name: 'location',
    table: 'escola',
    tableField: 'cod_localizacao',
    resultField: 'location_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_localizacao'
    }
}).addValue({
    name: 'location_detailed',
    table: 'escola',
    tableField: 'localidade_area_rural',
    resultField: 'location_detailed_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'localidade_area_rural'
    }
}).addValue({
    name: 'adm_dependency',
    table: 'escola',
    tableField: 'dependencia_adm_id',
    resultField: 'adm_dependency_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'dependencia_adm_id'
    }
}).addValue({
    name: 'adm_dependency_detailed',
    table: 'escola',
    tableField: 'dependencia_adm_priv',
    resultField: 'adm_dependency_detailed_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'dependencia_adm_priv'
    }
})

infrastructureApp.get('/', rqf.parse(), (req, res, next) => {
    
    next();
}, rqf.build(), query, response('infrastructure'));

module.exports = infrastructureApp;