'use strict';

var Node = require('./');

var sliced = require('sliced');

module.exports = Node.define({

type: 'CREATE INDEX',

constructor: function(table, indexName) {

Node.call(this);

this.table = table;

this.options = { indexName: indexName, columns: [] };

},

unique: function() {

this.options.type = 'unique';

return this;

},

spatial: function() {

this.options.type = 'spatial';

return this;

},

fulltext: function() {

this.options.type = 'fulltext';

return this;

},

using: function(algorithm) {

this.options.algorithm = algorithm;

return this;

},

on: function() {

var args = sliced(arguments);

this.options.columns = this.options.columns.concat(args);

return this;

},

withParser: function(parser) {

this.options.parser = parser;

return this;

},

indexName: function() {

var result = this.options.indexName;

if (!result) {

var columns = this.options.columns.map(function(col) {

var column = col.name ? col.name : col.value.name;

return column;

}).sort();

result = [this.table._name];

result = result.concat(columns);

result = result.join('_');

}

return result;

}

});