/*global describe, expect, it*/

'use strict';

var tableSql;

var SQLite3_Client = require('../../../lib/dialects/sqlite3');
var client         = new SQLite3_Client({})
var SQLite3_DDL    = require('../../../lib/dialects/sqlite3/schema/ddl')

var _              = require('lodash');
var equal          = require('assert').equal;
var deepEqual      = require('assert').deepEqual;

describe("SQLite SchemaBuilder", function() {

  it("basic create table", function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.increments('id');
      table.string('email');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("id" integer not null primary key autoincrement, "email" varchar(255))');
  });

  it("basic alter table", function() {
    tableSql = client.schemaBuilder().alterTable('users', function(table) {
      table.increments('id');
      table.string('email');
    }).toSQL();

    equal(2, tableSql.length);
    var expected = [
      'alter table "users" add column "id" integer not null primary key autoincrement',
      'alter table "users" add column "email" varchar(255)',
    ];
    expect(expected).to.eql(_.pluck(tableSql, 'sql'));
  });

  it("drop table", function() {
    tableSql = client.schemaBuilder().dropTable('users').toSQL();
    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'drop table "users"');
  });

  it("drop table if exists", function() {
    tableSql = client.schemaBuilder().dropTableIfExists('users').toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'drop table if exists "users"');
  });

  it("drop unique", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.dropUnique('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'drop index users_foo_unique');
  });

  it("drop unique, custom", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.dropUnique(null, 'foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'drop index foo');
  });

  it("drop index", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.dropIndex('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'drop index users_foo_index');
  });

  it("drop index, custom", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.dropIndex(null, 'foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'drop index foo');
  });

  it("rename table", function() {
    tableSql = client.schemaBuilder().renameTable('users', 'foo').toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" rename to "foo"');
  });

  it("adding primary key", function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.string('foo');
      table.primary('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("foo" varchar(255), primary key ("foo"))');
  });

  it("adding composite primary key", function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.string('foo');
      table.string('order_id');
      table.primary(['foo', 'order_id']);
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("foo" varchar(255), "order_id" varchar(255), primary key ("foo", "order_id"))');

    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.string('foo');
      table.string('order_id');
      table.primary('foo', 'order_id');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("foo" varchar(255), "order_id" varchar(255), primary key ("foo", "order_id"))');
  });

  it("adding primary key fluently", function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.string('foo').primary();
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("foo" varchar(255), primary key ("foo"))');
  });

  it("adding foreign key", function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.string('foo').primary();
      table.string('order_id');
      table.foreign('order_id').references('id').on('orders');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("foo" varchar(255), "order_id" varchar(255), foreign key("order_id") references "orders"("id"), primary key ("foo"))');
  });

  it("adding foreign key fluently", function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.string('foo').primary();
      table.string('order_id').references('id').on('orders');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("foo" varchar(255), "order_id" varchar(255), foreign key("order_id") references "orders"("id"), primary key ("foo"))');
  });

  it("adds a unique key with autogenerated name", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.unique('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create unique index users_foo_unique on "users" ("foo")');
  });

  it("adding unique key with specific name", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.unique('foo', 'bar');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create unique index bar on "users" ("foo")');
  });

  it("adding index", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.index(['foo', 'bar'], 'baz');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'create index baz on "users" ("foo", "bar")');
  });

  it("adding incrementing id", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.increments('id');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "id" integer not null primary key autoincrement');
  });

  it("adding big incrementing id", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.bigIncrements('id');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "id" integer not null primary key autoincrement');
  });

  it("adding string", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.string('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" varchar(255)');
  });

  it("allows setting a value in the string length, although unused by sqlite3", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.string('foo', 100);
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" varchar(100)');
  });

  it("correctly interprets defaultTo(null)", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.string('foo').defaultTo(null);
    }).toSQL();

    equal(tableSql[0].sql, 'alter table "users" add column "foo" varchar(255) default null');
  });

  it("chains notNull and defaultTo", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.string('foo', 100).notNull().defaultTo('bar');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" varchar(100) not null default \'bar\'');
  });

  it("adding text", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.text('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" text');
  });

  it("adding big integer", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.bigInteger('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" bigint');
  });

  it("bigincrements works the same as increments for sqlite3", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.bigIncrements('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" integer not null primary key autoincrement');
  });

  it("adding integer", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.integer('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" integer');
  });

  it("adding autoincrements", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.increments('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" integer not null primary key autoincrement');
  });

  it("adding medium integer", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.mediumint('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" integer');
  });

  it("adding tiny integer", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.tinyint('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" tinyint');
  });

  it("adding small integer", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.smallint('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" integer');
  });

  it("adding float", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.float('foo', 5, 2);
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" float');
  });

  it("adding double", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.double('foo', 15, 8);
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" float');
  });

  it("adding decimal", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.decimal('foo', 5, 2);
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" float');
  });

  it("adding boolean", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.boolean('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" boolean');
  });

  it("adding enum", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.enum('foo', ['bar', 'baz']);
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" varchar');
  });

  it("adding date", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.date('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" date');
  });

  it("adding date time", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.dateTime('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" datetime');
  });

  it("adding time", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.time('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" time');
  });

  it("adding time stamp", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.timestamp('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" datetime');
  });

  it("adding time stamps", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.timestamps();
    }).toSQL();

    equal(2, tableSql.length);
    var expected = [
      'alter table "users" add column "created_at" datetime',
      'alter table "users" add column "updated_at" datetime'
    ];
    deepEqual(expected, _.pluck(tableSql, 'sql'));
  });

  it("adding binary", function() {
    tableSql = client.schemaBuilder().table('users', function(table) {
      table.binary('foo');
    }).toSQL();

    equal(1, tableSql.length);
    equal(tableSql[0].sql, 'alter table "users" add column "foo" blob');
  });

  it('allows for on delete cascade with foreign keys, #166', function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.string('user_id', 36)
        .index()
        .references('id')
        .inTable('user')
        .onDelete('CASCADE');
    }).toSQL();

    equal(2, tableSql.length);
    equal(tableSql[0].sql, 'create table "users" ("user_id" varchar(36), foreign key("user_id") references "user"("id") on delete CASCADE)');
  });
  
  describe('SQLite3_DDL.prototype._doReplace', function () {
    it('should not change a query that has no matches', function () {
      return client.schemaBuilder().table('foo', function (tbl) {
        
        // i don't really know how to get at an instance of this 'correctly'
        var doReplace = SQLite3_DDL.prototype._doReplace;
        
        var sql1 = 'CREATE TABLE "foo" ("id" integer not null primary key autoincrement, '+
              '"parent_id_test" integer, foreign key("parent_id") references "foo"("id"))';
        var sql2 = 'CREATE TABLE "foo" ("id" integer not null primary key autoincrement, '+
              '"parent_id_test" integer, foreign key("parent_id") references "bar"("id"))';
        
        var sql1b = 'CREATE TABLE "foo" ("id_foo" integer not null primary key autoincrement, '+
              '"parent_id_test" integer, foreign key("parent_id") references "foo"("id_foo"))';
        var sql2b = 'CREATE TABLE "foo" ("id_foo" integer not null primary key autoincrement, '+
              '"parent_id_test" integer, foreign key("parent_id") references "bar"("id"))';
        
        
        expect(doReplace(sql1, '"bar"', '"lar"')).to.equal(sql1);
        expect(doReplace(sql1, '"id"', '"id_foo"')).to.equal(sql1b);
        expect(doReplace(sql2, '"id"', '"id_foo"')).to.equal(sql2b);
      }).toSQL();
    });
  });
});