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initial commit
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var express = require('express');
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var router = express.Router(); |
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var sqlite3 = require('sqlite3');
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var fs = require('fs');
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var db = new sqlite3.Database('./public/elections.db');
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var zonesfull = JSON.parse(fs.readFileSync("./public/zones-de-rattachement.json"));
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var elections = ["Élections"]; |
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var sql_election = [""]; |
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var sections = ["Sections"]; |
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var sql_section = [""]; |
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var route_name = "/cartes-elections"; |
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var url = "https://cloud.paris12.pcf.fr" + route_name; |
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function resultat_par_bureau (from_where, numerateur, denominateur, gradient, next) {
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db.all('select bureau,((1.00 * ' + numerateur + ') / (1.00 * ' + denominateur + ')) as data' + from_where, function (err, rows) {
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if (err) {
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console.log(err); |
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} |
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else {
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gradient.min = 9999; |
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gradient.max = 0 - gradient.min; |
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for (var row in rows) {
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gradient[rows[row].bureau] = rows[row].data; |
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gradient.max = (rows[row].data > gradient.max) ? rows[row].data : gradient.max; |
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gradient.min = (rows[row].data < gradient.min) ? rows[row].data : gradient.min; |
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} |
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next(); |
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} |
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}); |
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} |
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var requetes = {
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"Requêtes" : "", |
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"Scores candidat-e (ou liste de) soutenu-e (en %)" : function (req, next) {
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var gradient = {
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titre : req.requete + '<br>' + elections[req.election], |
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lightness : {
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intitule : 'résultat', |
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type : '%' |
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} |
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}; |
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var from_where = ' from scrutins where soutien is 1 and ' + sql_election[req.election] + ' and ' + sql_section[req.section]; |
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resultat_par_bureau(from_where, 'voix', 'exprimes', gradient.lightness, function () {
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next(req.section, gradient); |
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}); |
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}, |
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"Voix candidat-e (ou liste de de) soutenu-e": function (req, next) {
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var gradient = {
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titre : req.requete + '<br>' + elections[req.election], |
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lightness : {
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intitule : 'voix', |
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type : 'absolues' |
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}, |
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saturation : {
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intitule : 'inscrits', |
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type : 'absolus' |
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} |
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}; |
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var from_where = ' from scrutins where soutien is 1 and ' + sql_election[req.election] + ' and ' + sql_section[req.section]; |
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resultat_par_bureau(from_where, 'voix', 1, gradient.lightness, function () {
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resultat_par_bureau(from_where, 'inscrits', 1, gradient.saturation, function () {
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next(req.section, gradient); |
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}); |
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}); |
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}, |
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"Abstention seule (%)" : function (req, next) {
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var gradient = {
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titre : req.requete + '<br>' + elections[req.election], |
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lightness : {
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intitule : 'abstention', |
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type : '%' |
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} |
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}; |
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var from_where = ' from scrutins where soutien is 1 and ' + sql_election[req.election] + ' and ' + sql_section[req.section]; |
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resultat_par_bureau(from_where, 'inscrits - exprimes', 'inscrits', gradient.lightness, function () {
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next(req.section, gradient); |
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}); |
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}, |
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"Score soutien (%) + abstention (%)" : function (req, next) {
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var gradient = {
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titre : req.requete + '<br>' + elections[req.election], |
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lightness : {
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intitule : 'résultat', |
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type : '%' |
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}, |
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saturation : {
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intitule : 'abstention', |
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type : '%' |
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} |
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}; |
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var from_where = ' from scrutins where soutien is 1 and ' + sql_election[req.election] + ' and ' + sql_section[req.section]; |
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resultat_par_bureau(from_where, 'voix', 'exprimes', gradient.lightness, function () {
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resultat_par_bureau(from_where, 'inscrits - exprimes', 'inscrits', gradient.saturation, function () {
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next(req.section, gradient); |
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}); |
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}); |
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}, |
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"Evolution avec autre scrutin (pas encore disponible)" : function () { return; }
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} |
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function pad(n, width, z) {
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z = z || '0'; |
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n = n + ''; |
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return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n; |
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} |
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function zones_to_geoJSON (arrondissement, resultats, next) {
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var geoJSON = {
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"type": "FeatureCollection", |
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"features": [] |
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}; |
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for (var bureau in zonesfull) {
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if (zonesfull[bureau].fields.arrondisse == arrondissement) {
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var num_bv = zonesfull[bureau].fields.num_bv; |
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geoJSON.features.push({
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"type" : "Feature", |
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"id" : num_bv, |
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"properties": {"num_bv": num_bv },
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"geometry": zonesfull[bureau].fields.geo_shape |
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}); |
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} |
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} |
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next(resultats, geoJSON); |
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} |
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function format_first_second (v) {
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return v + (v === 1 && "er" || "ème"); |
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} |
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function set_elections_arrays (err, row) {
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if (!err) {
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elections.push(row.annee + " - " + row.election + " - " + format_first_second(row.tour) + " tour" ); |
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sql_election.push("election is '" + row.election + "' and annee is " + row.annee + " and tour is " + row.tour);
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} |
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else {
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console.log(err); |
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} |
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} |
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function get_elections_choices () {
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db.each("select distinct election,annee,tour from scrutins order by annee, election, tour asc", set_elections_arrays);
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} |
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get_elections_choices(); |
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for (var section = 1; section <= 20; section++) {
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sections.push(format_first_second(section) + " arrondissement"); |
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sql_section.push("arrondissement is " + section);
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} |
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router |
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.route(route_name) |
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.get(function (req, res, next) {
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res.render('choix', {
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url : url, |
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elections : elections, |
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sections : sections, |
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requetes : requetes |
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}); |
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}) |
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.post(function(req, res, next) {
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if (!req.body) return res.sendStatus(400); |
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requetes[req.body.requete](req.body, function (arrondissement, resultats) {
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function testresultats () {
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for (var hsla in resultats) {
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if (resultats[hsla][1]) {
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return true; |
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} |
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} |
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return false; |
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} |
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if (testresultats()) {
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zones_to_geoJSON(arrondissement, resultats, function (resultats, zones) {
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if (!zones.features[0].geometry) {
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throw("pas de découpage...");
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} |
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else {
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res.render('paris', {
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'url' : url, |
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'gradient' : resultats, |
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'zones' : zones |
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}) |
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} |
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}); |
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} |
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else {
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var noresult = "Pas de résultat sur le " + req.body.section + " pour '" + req.body.election + "'..."; |
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res.simpleText(200, noresult); |
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} |
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}); |
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}); |
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module.exports = router; |