'use strict';

/**
 *
 * Requires the database and tables setup in config/environments/test.js to exist
 * Ensure the user is present in the pgbouncer auth file too
 * TODO: Add OAuth tests.
 *
 * To run this test, ensure that cartodb_test_user_1_db metadata exists
 * in Redis for the vizzuality.cartodb.com domain
 *
 * SELECT 5
 * HSET rails:users:vizzuality id 1
 * HSET rails:users:vizzuality database_name cartodb_test_user_1_db
 *
 */
require('../../helper');
var JobController = require('../../../lib/api/sql/job-controller');
var redisUtils = require('../../support/redis-utils');
var server = require('../../../lib/server')();
var assert = require('../../support/assert');
var querystring = require('qs');

function payload (query) {
    return JSON.stringify({ query: query });
}
function payloadSize (query) {
    return payload(query).length;
}

var minPayloadSize = payloadSize('');
var queryMaxSize = new Array(JobController.MAX_LIMIT_QUERY_SIZE_IN_BYTES - minPayloadSize + 1).join('a');
var queryTooLong = queryMaxSize.concat('a');

describe('job query limit', function () {
    function expectedErrorMessage (query) {
        return JobController.getMaxSizeErrorMessage(payload(query));
    }

    after(function (done) {
        redisUtils.clean('batch:*', done);
    });

    it('POST /api/v2/sql/job with a invalid query size  should respond with 400 query too long', function (done) {
        assert.response(server, {
            url: '/api/v2/sql/job?api_key=1234',
            headers: { host: 'vizzuality.cartodb.com', 'Content-Type': 'application/x-www-form-urlencoded' },
            method: 'POST',
            data: querystring.stringify({
                query: queryTooLong
            })
        }, {
            status: 400
        }, function (err, res) {
            var error = JSON.parse(res.body);
            assert.deepStrictEqual(error, { error: [expectedErrorMessage(queryTooLong)] });
            done();
        });
    });

    it('POST /api/v2/sql/job with a valid query size should respond with 201 created', function (done) {
        assert.response(server, {
            url: '/api/v2/sql/job?api_key=1234',
            headers: { host: 'vizzuality.cartodb.com', 'Content-Type': 'application/x-www-form-urlencoded' },
            method: 'POST',
            data: querystring.stringify({
                query: queryMaxSize
            })
        }, {
            status: 201
        }, function (err, res) {
            var job = JSON.parse(res.body);
            assert.ok(job.job_id);
            done();
        });
    });

    it('POST /api/v2/sql/job with a invalid query size should consider multiple queries', function (done) {
        var queries = [queryTooLong, 'select 1'];
        assert.response(server, {
            url: '/api/v2/sql/job?api_key=1234',
            headers: { host: 'vizzuality.cartodb.com', 'Content-Type': 'application/x-www-form-urlencoded' },
            method: 'POST',
            data: querystring.stringify({
                query: queries
            })
        }, {
            status: 400
        }, function (err, res) {
            var error = JSON.parse(res.body);
            assert.deepStrictEqual(error, { error: [expectedErrorMessage(queries)] });
            done();
        });
    });

    it('POST /api/v2/sql/job with a invalid query size should consider fallback queries/callbacks', function (done) {
        var fallbackQueries = {
            query: [{
                query: queryTooLong,
                onsuccess: 'SELECT * FROM untitle_table_4 limit 1'
            }, {
                query: 'SELECT * FROM untitle_table_4 limit 2',
                onsuccess: 'SELECT * FROM untitle_table_4 limit 3'
            }]
        };
        assert.response(server, {
            url: '/api/v2/sql/job?api_key=1234',
            headers: { host: 'vizzuality.cartodb.com', 'Content-Type': 'application/x-www-form-urlencoded' },
            method: 'POST',
            data: querystring.stringify({
                query: fallbackQueries
            })
        }, {
            status: 400
        }, function (err, res) {
            var error = JSON.parse(res.body);
            assert.deepStrictEqual(error, { error: [expectedErrorMessage(fallbackQueries)] });
            done();
        });
    });
});