require('../../helper');
require('../../support/assert');


var app = require(global.settings.app_root + '/app/app')();
var assert = require('assert');
var querystring = require('querystring');

// allow lots of emitters to be set to silence warning
app.setMaxListeners(0);

describe('export.csv', function() {

it('CSV format', function(done){
    assert.response(app, {
        url: '/api/v1/sql?' + querystring.stringify({
          q: 'SELECT * FROM untitle_table_4 WHERE cartodb_id = 1',
          format: 'csv'
        }),
        headers: {host: 'vizzuality.cartodb.com'},
        method: 'GET'
    },{ }, function(res){
        assert.equal(res.statusCode, 200, res.body);
        var cd = res.header('Content-Disposition');
        assert.equal(true, /^attachment/.test(cd), 'CSV is not disposed as attachment: ' + cd);
        assert.equal(true, /filename=cartodb-query.csv/gi.test(cd));
        var ct = res.header('Content-Type');
        assert.equal(true, /header=present/.test(ct), "CSV doesn't advertise header presence: " + ct);

        var rows = res.body.split(/\r\n/);
        var row0 = rows[0].split(',');
        var row1 = rows[1].split(',');

        assert.equal(row0[1], 'created_at');
        assert.equal(row1[1], '2011-09-21 14:02:21.314252');

        done();
    });
});

it('CSV format, bigger than 81920 bytes', function(done){
    assert.response(app, {
        url: '/api/v1/sql',
        data: querystring.stringify({
          q: 'SELECT 0 as fname FROM generate_series(0,81920)',
          format: 'csv'
        }),
        headers: {host: 'vizzuality.cartodb.com', 'Content-Type': 'application/x-www-form-urlencoded' },
        method: 'POST'
    },{ }, function(res){
        assert.ok(res.body.length > 81920, 'CSV smaller than expected: ' + res.body.length);
        done();
    });
});


it('CSV format from POST', function(done){
    assert.response(app, {
        url: '/api/v1/sql',
        data: querystring.stringify({q: "SELECT * FROM untitle_table_4 LIMIT 1", format: 'csv'}),
        headers: {host: 'vizzuality.cartodb.com', 'Content-Type': 'application/x-www-form-urlencoded' },
        method: 'POST'
    },{ }, function(res){
        assert.equal(res.statusCode, 200, res.body);
        var cd = res.header('Content-Disposition');
        assert.equal(true, /^attachment/.test(cd), 'CSV is not disposed as attachment: ' + cd);
        assert.equal(true, /filename=cartodb-query.csv/gi.test(cd));
        var ct = res.header('Content-Type');
        assert.equal(true, /header=present/.test(ct), "CSV doesn't advertise header presence: " + ct);
        done();
    });
});

it('CSV format, custom filename', function(done){
    assert.response(app, {
        url: '/api/v1/sql?q=SELECT%20*%20FROM%20untitle_table_4%20LIMIT%201&format=csv&filename=mycsv.csv',
        headers: {host: 'vizzuality.cartodb.com'},
        method: 'GET'
    },{ }, function(res){
        assert.equal(res.statusCode, 200, res.body);
        var cd = res.header('Content-Disposition');
        assert.equal(true, /^attachment/.test(cd), 'CSV is not disposed as attachment: ' + cd);
        assert.equal(true, /filename=mycsv.csv/gi.test(cd), cd);
        var ct = res.header('Content-Type');
        assert.equal(true, /header=present/.test(ct), "CSV doesn't advertise header presence: " + ct);
        var row0 = res.body.substring(0, res.body.search(/[\n\r]/)).split(',');
        var checkFields = { name: true, cartodb_id: true, the_geom: true, the_geom_webmercator: true };
        Object.keys(checkFields).forEach(function(f) {
            var idx = row0.indexOf(f);
            if ( checkFields[f] ) {
                assert.ok(idx !== -1, "result does not include '" + f + "'");
            } else {
                assert.ok(idx === -1, "result includes '" + f + "' ("+idx+")");
            }
        });
        done();
    });
});

it('skipfields controls fields included in CSV output', function(done){
    assert.response(app, {
        url: '/api/v1/sql?q=SELECT%20*%20FROM%20untitle_table_4%20LIMIT%201&format=csv' +
            '&skipfields=unexistant,cartodb_id',
        headers: {host: 'vizzuality.cartodb.com'},
        method: 'GET'
    },{ }, function(res){
        assert.equal(res.statusCode, 200, res.body);
        var row0 = res.body.substring(0, res.body.search(/[\n\r]/)).split(',');
        var checkFields = { name: true, cartodb_id: false, the_geom: true, the_geom_webmercator: true };
        Object.keys(checkFields).forEach(function(f) {
            var idx = row0.indexOf(f);
            if ( checkFields[f] ) {
                assert.ok(idx !== -1, "result does not include '" + f + "'");
            } else {
                assert.ok(idx === -1, "result includes '" + f + "' ("+idx+")");
            }
        });
        done();
    });
});

it('GET /api/v1/sql as csv', function(done){
    assert.response(app, {
        url: '/api/v1/sql?q=SELECT%20cartodb_id,ST_AsEWKT(the_geom)%20as%20geom%20FROM%20untitle_table_4%20LIMIT%201' +
            '&format=csv',
        headers: {host: 'vizzuality.cartodb.com'},
        method: 'GET'
    },{ }, function(res){
        assert.equal(res.statusCode, 200, res.body);
        var expected = 'cartodb_id,geom\r\n1,"SRID=4326;POINT(-3.699732 40.423012)"\r\n';
        assert.equal(res.body, expected);
        done();
    });
});

// See https://github.com/Vizzuality/CartoDB-SQL-API/issues/60
it('GET /api/v1/sql as csv with no rows', function(done){
    assert.response(app, {
        url: '/api/v1/sql?q=SELECT%20true%20WHERE%20false&format=csv',
        headers: {host: 'vizzuality.cartodb.com'},
        method: 'GET'
    },{ }, function(res){
        assert.equal(res.statusCode, 200, res.body);
        var obtained_lines = res.body.split('\r\n');
        assert.ok(obtained_lines.length <= 2, // may or may not have an header
          // See http://trac.osgeo.org/gdal/ticket/5234
          'Too many lines in output (' + obtained_lines.length + '): ' + obtained_lines.join('\n'));
        done();
    });
});

it('GET /api/v1/sql as csv, properly escaped', function(done){
    assert.response(app, {
        url: '/api/v1/sql?q=SELECT%20cartodb_id,%20address%20FROM%20untitle_table_4%20LIMIT%201&format=csv',
        headers: {host: 'vizzuality.cartodb.com'},
        method: 'GET'
    },{ }, function(res){
        assert.equal(res.statusCode, 200, res.body);
        var expected = 'cartodb_id,address\r\n1,"Calle de Pérez Galdós 9, Madrid, Spain"\r\n';
        assert.equal(res.body, expected);
        done();
    });
});

it('GET /api/v1/sql as csv, concurrently', function(done){

    var concurrency = 4;
    var waiting = concurrency;
    function validate(res){
        var expected = 'cartodb_id,address\r\n1,"Calle de Pérez Galdós 9, Madrid, Spain"\r\n';
        assert.equal(res.body, expected);
        if ( ! --waiting ) {
            done();
        }
    }
    for (var i=0; i<concurrency; ++i) {
        assert.response(app,
            {
                url: '/api/v1/sql?q=SELECT%20cartodb_id,%20address%20FROM%20untitle_table_4%20LIMIT%201&format=csv',
                headers: {host: 'vizzuality.cartodb.com'},
                method: 'GET'
            },
            {
                status: 200
            },
            validate
        );
    }
});

    it('expects 1200 rows in public table', function(done){
        var limit = 1200;

        assert.response(app, {
                url: '/api/v1/sql?' + querystring.stringify({
                    q: "SELECT * from populated_places_simple_reduced limit " + limit,
                    format: 'csv'
                }),
                headers: {host: 'vizzuality.cartodb.com'},
                method: 'GET'
            },
            {
                status: 200
            },
            function(res) {
                var headersPlusExtraLine = 2;
                assert.equal(res.body.split('\n').length, limit + headersPlusExtraLine);
                done();
            }
        );
    });

});