package gorm_test

import (
	"fmt"
	"testing"
	"time"
)

func runMigration() {
	if err := DB.DropTableIfExists(&User{}).Error; err != nil {
		fmt.Printf("Got error when try to delete table users, %+v\n", err)
	}

	for _, table := range []string{"animals", "user_languages"} {
		DB.Exec(fmt.Sprintf("drop table %v;", table))
	}

	values := []interface{}{&Product{}, &Email{}, &Address{}, &CreditCard{}, &Company{}, &Role{}, &Language{}, &HNPost{}, &EngadgetPost{}, &Animal{}, &User{}, &JoinTable{}, &Post{}, &Category{}, &Comment{}}
	for _, value := range values {
		DB.DropTable(value)
	}

	if err := DB.AutoMigrate(values...).Error; err != nil {
		panic(fmt.Sprintf("No error should happen when create table, but got %+v", err))
	}
}

func TestIndexes(t *testing.T) {
	if err := DB.Model(&Email{}).AddIndex("idx_email_email", "email").Error; err != nil {
		t.Errorf("Got error when tried to create index: %+v", err)
	}

	scope := DB.NewScope(&Email{})
	if !scope.Dialect().HasIndex(scope, scope.TableName(), "idx_email_email") {
		t.Errorf("Email should have index idx_email_email")
	}

	if err := DB.Model(&Email{}).RemoveIndex("idx_email_email").Error; err != nil {
		t.Errorf("Got error when tried to remove index: %+v", err)
	}

	if scope.Dialect().HasIndex(scope, scope.TableName(), "idx_email_email") {
		t.Errorf("Email's index idx_email_email should be deleted")
	}

	if err := DB.Model(&Email{}).AddIndex("idx_email_email_and_user_id", "user_id", "email").Error; err != nil {
		t.Errorf("Got error when tried to create index: %+v", err)
	}

	if !scope.Dialect().HasIndex(scope, scope.TableName(), "idx_email_email_and_user_id") {
		t.Errorf("Email should have index idx_email_email_and_user_id")
	}

	if err := DB.Model(&Email{}).RemoveIndex("idx_email_email_and_user_id").Error; err != nil {
		t.Errorf("Got error when tried to remove index: %+v", err)
	}

	if scope.Dialect().HasIndex(scope, scope.TableName(), "idx_email_email_and_user_id") {
		t.Errorf("Email's index idx_email_email_and_user_id should be deleted")
	}

	if err := DB.Model(&Email{}).AddUniqueIndex("idx_email_email_and_user_id", "user_id", "email").Error; err != nil {
		t.Errorf("Got error when tried to create index: %+v", err)
	}

	if !scope.Dialect().HasIndex(scope, scope.TableName(), "idx_email_email_and_user_id") {
		t.Errorf("Email should have index idx_email_email_and_user_id")
	}

	if DB.Save(&User{Name: "unique_indexes", Emails: []Email{{Email: "user1@example.comiii"}, {Email: "user1@example.com"}, {Email: "user1@example.com"}}}).Error == nil {
		t.Errorf("Should get to create duplicate record when having unique index")
	}

	if err := DB.Model(&Email{}).RemoveIndex("idx_email_email_and_user_id").Error; err != nil {
		t.Errorf("Got error when tried to remove index: %+v", err)
	}

	if scope.Dialect().HasIndex(scope, scope.TableName(), "idx_email_email_and_user_id") {
		t.Errorf("Email's index idx_email_email_and_user_id should be deleted")
	}

	if DB.Save(&User{Name: "unique_indexes", Emails: []Email{{Email: "user1@example.com"}, {Email: "user1@example.com"}}}).Error != nil {
		t.Errorf("Should be able to create duplicated emails after remove unique index")
	}
}

type BigEmail struct {
	Id           int64
	UserId       int64
	Email        string    `sql:"index:idx_email_agent"`
	UserAgent    string    `sql:"index:idx_email_agent"`
	RegisteredAt time.Time `sql:"unique_index"`
	CreatedAt    time.Time
	UpdatedAt    time.Time
}

func (b BigEmail) TableName() string {
	return "emails"
}

func TestAutoMigration(t *testing.T) {
	DB.AutoMigrate(&Address{})
	if err := DB.Table("emails").AutoMigrate(&BigEmail{}).Error; err != nil {
		t.Errorf("Auto Migrate should not raise any error")
	}

	DB.Save(&BigEmail{Email: "jinzhu@example.org", UserAgent: "pc", RegisteredAt: time.Now()})

	scope := DB.NewScope(&BigEmail{})
	if !scope.Dialect().HasIndex(scope, scope.TableName(), "idx_email_agent") {
		t.Errorf("Failed to create index")
	}

	if !scope.Dialect().HasIndex(scope, scope.TableName(), "uix_emails_registered_at") {
		t.Errorf("Failed to create index")
	}

	var bigemail BigEmail
	DB.First(&bigemail, "user_agent = ?", "pc")
	if bigemail.Email != "jinzhu@example.org" || bigemail.UserAgent != "pc" || bigemail.RegisteredAt.IsZero() {
		t.Error("Big Emails should be saved and fetched correctly")
	}
}