'use strict';

exports.__esModule = true;

var _getIterator2 = require('babel-runtime/core-js/get-iterator');

var _getIterator3 = _interopRequireDefault(_getIterator2);

var _has2 = require('lodash/has');

var _has3 = _interopRequireDefault(_has2);

var _inherits = require('inherits');

var _inherits2 = _interopRequireDefault(_inherits);

var _tablecompiler = require('../../../schema/tablecompiler');

var _tablecompiler2 = _interopRequireDefault(_tablecompiler);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/* eslint max-len: 0 */

// PostgreSQL Table Builder & Compiler
// -------

function TableCompiler_PG() {
  _tablecompiler2.default.apply(this, arguments);
}
(0, _inherits2.default)(TableCompiler_PG, _tablecompiler2.default);

// Compile a rename column command.
TableCompiler_PG.prototype.renameColumn = function (from, to) {
  return this.pushQuery({
    sql: 'alter table ' + this.tableName() + ' rename ' + this.formatter.wrap(from) + ' to ' + this.formatter.wrap(to)
  });
};

TableCompiler_PG.prototype.compileAdd = function (builder) {
  var table = this.formatter.wrap(builder);
  var columns = this.prefixArray('add column', this.getColumns(builder));
  return this.pushQuery({
    sql: 'alter table ' + table + ' ' + columns.join(', ')
  });
};

// Adds the "create" query to the query sequence.
TableCompiler_PG.prototype.createQuery = function (columns, ifNot) {
  var createStatement = ifNot ? 'create table if not exists ' : 'create table ';
  var sql = createStatement + this.tableName() + ' (' + columns.sql.join(', ') + ')';
  if (this.single.inherits) sql += ' inherits (' + this.formatter.wrap(this.single.inherits) + ')';
  this.pushQuery({
    sql: sql,
    bindings: columns.bindings
  });
  var hasComment = (0, _has3.default)(this.single, 'comment');
  if (hasComment) this.comment(this.single.comment);
};

TableCompiler_PG.prototype.addColumns = function (columns, prefix, colCompilers) {
  if (prefix === this.alterColumnsPrefix) {
    // alter columns
    for (var _iterator = colCompilers, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
      var _ref;

      if (_isArray) {
        if (_i >= _iterator.length) break;
        _ref = _iterator[_i++];
      } else {
        _i = _iterator.next();
        if (_i.done) break;
        _ref = _i.value;
      }

      var col = _ref;

      var quotedTableName = this.tableName();
      var colName = col.getColumnName();
      var type = col.getColumnType();

      this.pushQuery({
        sql: 'alter table ' + quotedTableName + ' alter column "' + colName + '" drop default',
        bindings: []
      });
      this.pushQuery({
        sql: 'alter table ' + quotedTableName + ' alter column "' + colName + '" drop not null',
        bindings: []
      });
      this.pushQuery({
        sql: 'alter table ' + quotedTableName + ' alter column "' + colName + '" type ' + type + ' using ("' + colName + '"::' + type + ')',
        bindings: []
      });

      var defaultTo = col.modified['defaultTo'];
      if (defaultTo) {
        var modifier = col.defaultTo.apply(col, defaultTo);
        this.pushQuery({
          sql: 'alter table ' + quotedTableName + ' alter column "' + colName + '" set ' + modifier,
          bindings: []
        });
      }

      var nullable = col.modified['nullable'];
      if (nullable && nullable[0] === false) {
        this.pushQuery({
          sql: 'alter table ' + quotedTableName + ' alter column "' + colName + '" set not null',
          bindings: []
        });
      }
    }
  } else {
    // base class implementation for normal add
    _tablecompiler2.default.prototype.addColumns.call(this, columns, prefix);
  }
};

// Compiles the comment on the table.
TableCompiler_PG.prototype.comment = function (comment) {
  this.pushQuery('comment on table ' + this.tableName() + ' is \'' + this.single.comment + '\'');
};

// Indexes:
// -------

TableCompiler_PG.prototype.primary = function (columns, constraintName) {
  constraintName = constraintName ? this.formatter.wrap(constraintName) : this.formatter.wrap(this.tableNameRaw + '_pkey');
  this.pushQuery('alter table ' + this.tableName() + ' add constraint ' + constraintName + ' primary key (' + this.formatter.columnize(columns) + ')');
};
TableCompiler_PG.prototype.unique = function (columns, indexName) {
  indexName = indexName ? this.formatter.wrap(indexName) : this._indexCommand('unique', this.tableNameRaw, columns);
  this.pushQuery('alter table ' + this.tableName() + ' add constraint ' + indexName + ' unique (' + this.formatter.columnize(columns) + ')');
};
TableCompiler_PG.prototype.index = function (columns, indexName, indexType) {
  indexName = indexName ? this.formatter.wrap(indexName) : this._indexCommand('index', this.tableNameRaw, columns);
  this.pushQuery('create index ' + indexName + ' on ' + this.tableName() + (indexType && ' using ' + indexType || '') + ' (' + this.formatter.columnize(columns) + ')');
};
TableCompiler_PG.prototype.dropPrimary = function (constraintName) {
  constraintName = constraintName ? this.formatter.wrap(constraintName) : this.formatter.wrap(this.tableNameRaw + '_pkey');
  this.pushQuery('alter table ' + this.tableName() + ' drop constraint ' + constraintName);
};
TableCompiler_PG.prototype.dropIndex = function (columns, indexName) {
  indexName = indexName ? this.formatter.wrap(indexName) : this._indexCommand('index', this.tableNameRaw, columns);
  indexName = this.schemaNameRaw ? this.formatter.wrap(this.schemaNameRaw) + '.' + indexName : indexName;
  this.pushQuery('drop index ' + indexName);
};
TableCompiler_PG.prototype.dropUnique = function (columns, indexName) {
  indexName = indexName ? this.formatter.wrap(indexName) : this._indexCommand('unique', this.tableNameRaw, columns);
  this.pushQuery('alter table ' + this.tableName() + ' drop constraint ' + indexName);
};
TableCompiler_PG.prototype.dropForeign = function (columns, indexName) {
  indexName = indexName ? this.formatter.wrap(indexName) : this._indexCommand('foreign', this.tableNameRaw, columns);
  this.pushQuery('alter table ' + this.tableName() + ' drop constraint ' + indexName);
};

exports.default = TableCompiler_PG;
module.exports = exports['default'];