/*
Copyright (C) 2016 Centro de Computacao Cientifica e Software Livre
Departamento de Informatica - Universidade Federal do Parana - C3SL/UFPR

This file is part of simcaq-node.

simcaq-node is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

simcaq-node is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with simcaq-node.  If not, see <https://www.gnu.org/licenses/>.
*/

const express = require('express');

const courseCountApp = express.Router();

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

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

const squel = require('squel');

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

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

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

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

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

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

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

let rqf = new ReqQueryFields();

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

courseCountApp.get('/upper_adm_dependency', (req, res, next) => {
    req.result = [];
    for(let i = 1; i <= 7; ++i) {
        req.result.push({
            id: i,
            name: id2str.upperAdmDependency(i)
        });
    };
    next();
}, response('upper_adm_dependency'));

courseCountApp.get('/years', (req, res, next) => {
    req.sql.from('curso_ens_superior')
    .field('DISTINCT curso_ens_superior.ano_censo', 'year');
    next();
}, query, response('years'));

courseCountApp.get('/year_range', (req, res, next) => {
    req.sql.from('curso_ens_superior')
    .field('MIN(curso_ens_superior.ano_censo)', 'start_year')
    .field('MAX(curso_ens_superior.ano_censo)', 'end_year');
    next();
}, query, response('range'));

courseCountApp.get('/academic_organization', (req, res, next) => {
    req.result = [];
    for(let i = 1; i <= 5; ++i) {
        req.result.push({
            id: i,
            name: id2str.academicOrganization(i)
        });
    };
    next();
}, response('academic_organization'));

courseCountApp.get('/capital', (req, res, next) => {
    req.result = [
        {id: null, name: 'Não Classificado'},
        {id: 0, name: 'Não'},
        {id: 1, name: 'Sim'}
    ];
    next();
}, response('capital'));

courseCountApp.get('/ocde_geral', (req, res, next) => {
    req.result = [];
    for(let i = 1; i <= 8; ++i) {
        req.result.push({
            id: i,
            name: id2str.ocdeGeral(i)
        });
    };
    next();
}, response('ocde_geral'));

courseCountApp.get('/ocde_specific', (req, res, next) => {
    req.result = [];
    const defaultCase = null;
    for(let i = 1; i <= 86; ++i) {
        let obj = {
            id: i,
            name: id2str.ocdeSpecific(i)
        };
        if (obj.name !== id2str.ocdeSpecific(defaultCase)){
            req.result.push(obj);
        }
    };
    req.result.push({
        id: defaultCase,
        name: id2str.ocdeSpecific(defaultCase)
    });
    next();
}, response('ocde_specific'));

courseCountApp.get('/ocde_detailed', (req, res, next) => {
    req.result = [];
    const defaultCase = null;
    for(let i = 142; i <= 863; ++i) {
        let obj = {
            id: i,
            name: id2str.ocdeDetailed(i)
        };
        if (obj.name !== id2str.ocdeDetailed(defaultCase)){
            req.result.push(obj);
        }
    };
    req.result.push({
        id: defaultCase,
        name: id2str.ocdeDetailed(defaultCase)
    });
    next();
}, response('ocde_detailed'));

courseCountApp.get('/academic_level', (req, res, next) => {
    req.result = [];
    for(let i = 1; i <= 4; ++i) {
        req.result.push({
            id: i,
            name: id2str.academicLevel(i)
        });
    };
    next();
}, response('academic_level'));

courseCountApp.get('/upper_education_mod', (req, res, next) => {
    req.result = [];
    for(let i = 1; i <= 3; ++i) {
        req.result.push({
            id: i,
            name: id2str.upperEducationMod(i)
        });
    };
    next();
}, response('upper_education_mod'));

courseCountApp.get('/is_free', (req, res, next) => {
    req.result = [
        {id: null, name: 'Não Classificado'},
        {id: 0, name: 'Não'},
        {id: 1, name: 'Sim'}
    ];
    next();
}, response('is_free'));

courseCountApp.get('/night_time', (req, res, next) => {
    req.result = [
        {id: null, name: 'Não Classificado'},
        {id: 0, name: 'Não'},
        {id: 1, name: 'Sim'}
    ];
    next();
}, response('night_time'));

courseCountApp.get('/university', (req, res, next) => {
    req.sql.from('curso_ens_superior')
    .field('DISTINCT curso_ens_superior.nome_ies', 'nome')
    .field('curso_ens_superior.cod_ies', 'cod')
    next();
}, query, response('university'));

rqf.addField({
    name: 'filter',
    field: false,
    where: true
}).addField({
    name: 'dims',
    field: true,
    where: false
}).addValue({
    name: 'region',
    table: 'regiao',
    tableField: ['nome', 'id'],
    resultField: ['region_name', 'region_id'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'id'
    },
    join: {
        primary: 'nome',
        foreign: 'nome_regiao_curso',
        foreignTable: 'curso_ens_superior'
    }
}).addValue({
    name: 'state',
    table: 'estado',
    tableField: ['nome', 'id'],
    resultField: ['state_name', 'state_id'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'id'
    },
    join: {
        primary: 'id',
        foreign: 'cod_uf_curso',
        foreignTable: 'curso_ens_superior'
    }
}).addValue({
    name: 'city',
    table: 'curso_ens_superior',
    tableField: ['municipio_curso', 'cod_municipio_curso'],
    resultField: ['city_name', 'city_id'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_municipio_curso'
    }
}).addValue({
    name: 'university',
    table: 'curso_ens_superior',
    tableField: ['cod_ies', 'nome_ies'],
    resultField: ['university_id', 'university_name'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_ies'
    }
}).addValue({
    name:'upper_adm_dependency',
    table: 'curso_ens_superior',
    tableField: 'par_categoria_administrativa',
    resultField: 'upper_adm_dependency_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'par_categoria_administrativa'
    }
}).addValue({
    name:'academic_organization',
    table: 'curso_ens_superior',
    tableField: 'cod_organizacao_academica',
    resultField: 'academic_organization_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_organizacao_academica'
    }
}).addValue({
    name:'capital',
    table: 'curso_ens_superior',
    tableField: 'tfd_capital_curso',
    resultField: 'capital_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'tfd_capital_curso'
    }
}).addValue({
    name:'course',
    table: 'curso_ens_superior',
    tableField: 'nome_curso',
    resultField: 'course_name',
    where: {
        relation: 'LIKE',
        type: 'string',
        field: 'nome_curso'
    }
}).addValue({
    name:'ocde_specific',
    table: 'curso_ens_superior',
    tableField: ['cod_ocde_area_especifica', 'nome_ocde_area_especifica'],
    resultField: ['ocde_specific_id', 'ocde_specific_name'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_ocde_area_especifica'
    }
}).addValue({
    name:'ocde_geral',
    table: 'curso_ens_superior',
    tableField: ['cod_ocde_area_geral', 'nome_ocde_area_geral'],
    resultField: ['ocde_geral_id', 'ocde_geral_name'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_ocde_area_geral'
    }
}).addValue({
    name:'ocde_detailed',
    table: 'curso_ens_superior',
    tableField: ['cod_ocde_area_detalhada', 'nome_ocde_area_detalhada'],
    resultField: ['ocde_detailed_id', 'ocde_datailed_name'],
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_ocde_area_detalhada'
    }
}).addValue({
    name:'academic_level',
    table: 'curso_ens_superior',
    tableField: 'cod_grau_academico',
    resultField: 'academic_level_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_grau_academico'
    }
}).addValue({
    name:'upper_education_mod',
    table: 'curso_ens_superior',
    tableField: 'cod_modalidade_ensino',
    resultField: 'upper_education_mod_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_modalidade_ensino'
    }
}).addValue({
    name:'is_free',
    table: 'curso_ens_superior',
    tableField: 'gratuito',
    resultField: 'is_free_id',
    where: {
        relation: '=',
        type: 'boolean',
        field: 'gratuito'
    }
}).addValue({
    name:'night_time',
    table: 'curso_ens_superior',
    tableField: 'noturno_curso',
    resultField: 'night_time_id',
    where: {
        relation: '=',
        type: 'boolean',
        field: 'noturno_curso'
    }
}).addValue({
    name:'situation',
    table: 'curso_ens_superior',
    tableField: 'cod_situacao_curso',
    resultField: 'situacao_curso_id',
    where: {
        relation: '=',
        type: 'integer',
        field: 'cod_situacao_curso'
    }
}).addValue({
    name:'year',
    table: 'curso_ens_superior',
    tableField: 'ano_censo',
    resultField: 'year',
    where: {
        relation: '=',
        type: 'integer',
        field: 'ano_censo'
    }
}).addValue({
    name: 'min_year',
    table: 'curso_ens_superior',
    tableField: 'ano_censo',
    resultField: 'year',
    where: {
        relation: '>=',
        type: 'integer',
        table: 'curso_ens_superior',
        field: 'ano_censo'
    }
}).addValue({
    name: 'max_year',
    table: 'curso_ens_superior',
    tableField: 'ano_censo',
    resultField: 'year',
    where: {
        relation: '<=',
        type: 'integer',
        table: 'curso_ens_superior',
        field: 'ano_censo'
    }
});

courseCountApp.get('/', rqf.parse(), (req, res, next) => {
    req.sql.from('curso_ens_superior')
        .field('COUNT(curso_ens_superior.cod_curso)', 'total')
        .field("'Brasil'", 'name')
        .field('curso_ens_superior.ano_censo', 'year')
        .group('curso_ens_superior.ano_censo')
        .order('curso_ens_superior.ano_censo')
        .where('curso_ens_superior.tipo_atributo_ingresso <> 1 OR curso_ens_superior.tipo_atributo_ingresso is NULL')
        .where('curso_ens_superior.cod_nivel_academico = 1');
    next();
}, rqf.build(), query, id2str.transform(), addMissing(rqf), response('course_count'));

module.exports = courseCountApp;