// Copyright 2017 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package xorm

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestExistStruct(t *testing.T) {
	assert.NoError(t, prepareEngine())

	type RecordExist struct {
		Id   int64
		Name string
	}

	assertSync(t, new(RecordExist))

	has, err := testEngine.Exist(new(RecordExist))
	assert.NoError(t, err)
	assert.False(t, has)

	cnt, err := testEngine.Insert(&RecordExist{
		Name: "test1",
	})
	assert.NoError(t, err)
	assert.EqualValues(t, 1, cnt)

	has, err = testEngine.Exist(new(RecordExist))
	assert.NoError(t, err)
	assert.True(t, has)

	has, err = testEngine.Exist(&RecordExist{
		Name: "test1",
	})
	assert.NoError(t, err)
	assert.True(t, has)

	has, err = testEngine.Exist(&RecordExist{
		Name: "test2",
	})
	assert.NoError(t, err)
	assert.False(t, has)

	has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{})
	assert.NoError(t, err)
	assert.True(t, has)

	has, err = testEngine.Where("name = ?", "test2").Exist(&RecordExist{})
	assert.NoError(t, err)
	assert.False(t, has)

	has, err = testEngine.SQL("select * from "+testEngine.TableName("record_exist", true)+" where name = ?", "test1").Exist()
	assert.NoError(t, err)
	assert.True(t, has)

	has, err = testEngine.SQL("select * from "+testEngine.TableName("record_exist", true)+" where name = ?", "test2").Exist()
	assert.NoError(t, err)
	assert.False(t, has)

	has, err = testEngine.Table("record_exist").Exist()
	assert.NoError(t, err)
	assert.True(t, has)

	has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist()
	assert.NoError(t, err)
	assert.True(t, has)

	has, err = testEngine.Table("record_exist").Where("name = ?", "test2").Exist()
	assert.NoError(t, err)
	assert.False(t, has)
}

func TestExistStructForJoin(t *testing.T) {
	assert.NoError(t, prepareEngine())

	type Number struct {
		Id  int64
		Lid int64
	}

	type OrderList struct {
		Id  int64
		Eid int64
	}

	type Player struct {
		Id   int64
		Name string
	}

	assert.NoError(t, testEngine.Sync2(new(Number), new(OrderList), new(Player)))

	var ply Player
	cnt, err := testEngine.Insert(&ply)
	assert.NoError(t, err)
	assert.EqualValues(t, 1, cnt)

	var orderlist = OrderList{
		Eid: ply.Id,
	}
	cnt, err = testEngine.Insert(&orderlist)
	assert.NoError(t, err)
	assert.EqualValues(t, 1, cnt)

	var um = Number{
		Lid: orderlist.Id,
	}
	cnt, err = testEngine.Insert(&um)
	assert.NoError(t, err)
	assert.EqualValues(t, 1, cnt)

	session := testEngine.NewSession()
	defer session.Close()

	session.Table("number").
		Join("INNER", "order_list", "order_list.id = number.lid").
		Join("LEFT", "player", "player.id = order_list.eid").
		Where("number.lid = ?", 1)
	has, err := session.Exist()
	assert.NoError(t, err)
	assert.True(t, has)

	session.Table("number").
		Join("INNER", "order_list", "order_list.id = number.lid").
		Join("LEFT", "player", "player.id = order_list.eid").
		Where("number.lid = ?", 2)
	has, err = session.Exist()
	assert.NoError(t, err)
	assert.False(t, has)

	session.Table("number").
		Select("order_list.id").
		Join("INNER", "order_list", "order_list.id = number.lid").
		Join("LEFT", "player", "player.id = order_list.eid").
		Where("order_list.id = ?", 1)
	has, err = session.Exist()
	assert.NoError(t, err)
	assert.True(t, has)

	session.Table("number").
		Select("player.id").
		Join("INNER", "order_list", "order_list.id = number.lid").
		Join("LEFT", "player", "player.id = order_list.eid").
		Where("player.id = ?", 2)
	has, err = session.Exist()
	assert.NoError(t, err)
	assert.False(t, has)

	session.Table("number").
		Select("player.id").
		Join("INNER", "order_list", "order_list.id = number.lid").
		Join("LEFT", "player", "player.id = order_list.eid")
	has, err = session.Exist()
	assert.NoError(t, err)
	assert.True(t, has)

	err = session.DropTable("order_list")
	assert.NoError(t, err)

	exist, err := session.IsTableExist("order_list")
	assert.NoError(t, err)
	assert.False(t, exist)

	session.Table("number").
		Select("player.id").
		Join("INNER", "order_list", "order_list.id = number.lid").
		Join("LEFT", "player", "player.id = order_list.eid")
	has, err = session.Exist()
	assert.Error(t, err)
	assert.False(t, has)

	session.Table("number").
		Select("player.id").
		Join("LEFT", "player", "player.id = number.lid")
	has, err = session.Exist()
	assert.NoError(t, err)
	assert.True(t, has)
}