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

var TestClient = require('../../support/test-client');
var BatchTestClient = require('../../support/batch-test-client');
var JobStatus = require('../../../batch/job_status');

describe('multiple batch clients and users, job query order', function() {

    before(function(done) {
        this.batchTestClientA = new BatchTestClient({ name: 'consumerA' });
        this.batchTestClientB = new BatchTestClient({ name: 'consumerB' });

        this.testClientA = new TestClient();
        this.testClientA.getResult(
            'drop table if exists ordered_inserts; create table ordered_inserts (status numeric)',
            done
        );
    });

    after(function (done) {
        this.batchTestClientA.drain(function(err) {
            if (err) {
                return done(err);
            }

            this.batchTestClientB.drain(done);
        }.bind(this));
    });

    function createJob(queries) {
        return {
            query: queries
        };
    }

    it('should run job queries in order (multiple consumers)', function (done) {
        var jobRequestA1 = createJob([
            "insert into ordered_inserts values(1)",
            "select pg_sleep(0.25)",
            "insert into ordered_inserts values(2)"
        ]);
        var jobRequestA2 = createJob([
            "insert into ordered_inserts values(3)"
        ]);

        var jobRequestB1 = createJob([
            "insert into ordered_inserts values(4)"
        ]);

        var self = this;

        this.batchTestClientA.createJob(jobRequestA1, function(err, jobResultA1) {
            if (err) {
                return done(err);
            }

            // we don't care about the producer
            self.batchTestClientB.createJob(jobRequestA2, function(err, jobResultA2) {
                if (err) {
                    return done(err);
                }

                var override = { host: 'cartodb250user.cartodb.com' };
                self.batchTestClientB.createJob(jobRequestB1, override, function(err, jobResultB1) {
                    if (err) {
                        return done(err);
                    }

                    jobResultA1.getStatus(function (err, jobA1) {
                        if (err) {
                            return done(err);
                        }
                        jobResultA2.getStatus(function(err, jobA2) {
                            if (err) {
                                return done(err);
                            }
                            jobResultB1.getStatus(function(err, jobB1) {
                                assert.equal(jobA1.status, JobStatus.DONE);
                                assert.equal(jobA2.status, JobStatus.DONE);
                                assert.equal(jobB1.status, JobStatus.DONE);

                                self.testClientA.getResult('select * from ordered_inserts', function(err, rows) {
                                    assert.ok(!err);

                                    // cartodb250user and vizzuality test users share database
                                    var expectedRows = [1, 4, 2, 3].map(function(status) { return {status: status}; });
                                    assert.deepEqual(rows, expectedRows);
                                    assert.ok(
                                        new Date(jobA1.updated_at).getTime() < new Date(jobA2.updated_at).getTime(),
                                        'A1 (' + jobA1.updated_at + ') ' +
                                            'should finish before A2 (' + jobA2.updated_at + ')'
                                    );
                                    assert.ok(
                                        new Date(jobB1.updated_at).getTime() < new Date(jobA1.updated_at).getTime(),
                                        'B1 (' + jobA1.updated_at + ') ' +
                                            'should finish before A1 (' + jobA1.updated_at + ')'
                                    );
                                    done();
                                });
                            });

                        });
                    });
                });
            });
        });
    });

});