package store_test

import (
	"fmt"
	"gitea.deepak.science/deepak/gogmagog/models"
	"github.com/DATA-DOG/go-sqlmock"
	"github.com/stretchr/testify/assert"
	"testing"
)

func TestSelectCurrentPlan(t *testing.T) {
	assert := assert.New(t)

	planIDToUse := 1
	userIDToUse := 2

	str, mock := getDbMock(t)

	rows := sqlmock.NewRows([]string{"plan_id", "user_id"}).AddRow(planIDToUse, userIDToUse)
	mock.ExpectQuery(`^SELECT user_id, plan_id FROM user_current_plan WHERE user_id = \$1`).
		WithArgs(userIDToUse).
		WillReturnRows(rows)

	currPlan, err := str.SelectCurrentPlan(userIDToUse)
	assert.Nil(err)
	assert.EqualValues(planIDToUse, currPlan.PlanID)

	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}
}

func TestSelectCurrentPlanErr(t *testing.T) {
	assert := assert.New(t)

	userIDToUse := 2

	str, mock := getDbMock(t)

	mock.ExpectQuery(`^SELECT user_id, plan_id FROM user_current_plan WHERE user_id = \$1`).
		WithArgs(userIDToUse).
		WillReturnError(fmt.Errorf("example error"))

	currPlan, err := str.SelectCurrentPlan(userIDToUse)
	assert.NotNil(err)
	assert.Nil(currPlan)

	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}
}

func TestInsertCurrentPlan(t *testing.T) {
	// setup
	assert := assert.New(t)

	str, mock := getDbMock(t)
	planID := 1
	userID := 2
	badUserID := 7

	cp := &models.CurrentPlan{PlanID: int64(planID), UserID: int64(badUserID)}

	rows := sqlmock.NewRows([]string{"userID"}).AddRow(userID)

	mock.ExpectBegin()
	mock.ExpectQuery(`^INSERT INTO user_current_plan \(user_id, plan_id\) VALUES \(\$1, \$2\) RETURNING user_id$`).
		WithArgs(userID, planID).
		WillReturnRows(rows)
	mock.ExpectCommit()

	// function under test
	err := str.InsertCurrentPlan(cp, userID)
	// check results
	assert.Nil(err)
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}

}

func TestInsertCurrentPlanErr(t *testing.T) {
	// setup
	assert := assert.New(t)

	str, mock := getDbMock(t)
	userID := 2
	badUserID := 7
	planID := 1
	cp := &models.CurrentPlan{PlanID: int64(planID), UserID: int64(badUserID)}

	mock.ExpectBegin()
	mock.ExpectQuery(`^INSERT INTO user_current_plan \(user_id, plan_id\) VALUES \(\$1, \$2\) RETURNING user_id$`).
		WithArgs(userID, planID).
		WillReturnError(fmt.Errorf("example error"))
	mock.ExpectRollback()

	// function under test
	err := str.InsertCurrentPlan(cp, userID)
	// check results
	assert.NotNil(err)
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}

}

func TestInsertCurrentPlanCommitErr(t *testing.T) {
	// setup
	assert := assert.New(t)

	str, mock := getDbMock(t)
	planID := 1
	userID := 2
	cp := &models.CurrentPlan{PlanID: int64(planID), UserID: int64(userID)}

	rows := sqlmock.NewRows([]string{"user_id"}).AddRow(userID)

	mock.ExpectBegin()
	mock.ExpectQuery(`^INSERT INTO user_current_plan \(user_id, plan_id\) VALUES \(\$1, \$2\) RETURNING user_id$`).
		WithArgs(userID, planID).
		WillReturnRows(rows)
	mock.ExpectCommit().WillReturnError(fmt.Errorf("another error example"))

	// function under test
	err := str.InsertCurrentPlan(cp, userID)
	// check results
	assert.NotNil(err)
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}

}

func TestUpdateCurrentPlan(t *testing.T) {
	// setup
	assert := assert.New(t)

	str, mock := getDbMock(t)

	userIDToUse := 1
	planIDToUse := 2

	mock.ExpectBegin()
	mock.ExpectExec(`
		UPDATE user_current_plan SET
		plan_id = \$1
		WHERE user_id = \$2`).
		WithArgs(planIDToUse, userIDToUse).
		WillReturnResult(sqlmock.NewResult(1, 1))
	mock.ExpectCommit()

	// function under test
	err := str.UpdateCurrentPlan(&models.CurrentPlan{PlanID: int64(planIDToUse)}, userIDToUse)
	// check results
	assert.Nil(err)
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}

}

func TestUpdateCurrentPlanErr(t *testing.T) {
	// setup
	assert := assert.New(t)

	str, mock := getDbMock(t)

	userIDToUse := 1
	planIDToUse := 2

	mock.ExpectBegin()
	mock.ExpectExec(`
		UPDATE user_current_plan SET
		plan_id = \$1
		WHERE user_id = \$2`).
		WithArgs(planIDToUse, userIDToUse).
		WillReturnError(fmt.Errorf("example error"))
	mock.ExpectRollback()

	// function under test
	err := str.UpdateCurrentPlan(&models.CurrentPlan{PlanID: int64(planIDToUse)}, userIDToUse)
	// check results
	assert.NotNil(err)
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}

}

func TestUpdateCurrentPlanCommitErr(t *testing.T) {
	// setup
	assert := assert.New(t)

	str, mock := getDbMock(t)

	userIDToUse := 1
	planIDToUse := 2

	mock.ExpectBegin()
	mock.ExpectExec(`
		UPDATE user_current_plan SET
		plan_id = \$1
		WHERE user_id = \$2`).
		WithArgs(planIDToUse, userIDToUse).
		WillReturnResult(sqlmock.NewResult(1, 1))
	mock.ExpectCommit().WillReturnError(fmt.Errorf("another error example"))

	// function under test
	err := str.UpdateCurrentPlan(&models.CurrentPlan{PlanID: int64(planIDToUse)}, userIDToUse)
	// check results
	assert.NotNil(err)
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Errorf("unfulfilled expectations: %s", err)
	}

}