package apperror_test

import (
	"fmt"
	"testing"

	"github.com/pkg/errors"

	"github.com/stretchr/testify/assert"

	"edge-infra.dev/pkg/edge/iam/apperror"
)

func TestErrorChainWhenWrapped(t *testing.T) {
	dbErr := errors.New("(user db) -> user not found in db")
	svcErr := fmt.Errorf("(user service) -> %w", dbErr)
	handlerErr := apperror.NewStatusError(svcErr, 404)

	errChain := apperror.ErrorChain(handlerErr)

	assert.Equal(t, "[404]: (user service) -> (user db) -> user not found in db", errChain)
	assert.Equal(t, "(user service) -> (user db) -> user not found in db", handlerErr.Error())
}

func TestErrorChainWithAppError(t *testing.T) {
	// db returns an app error
	err := errors.New("SQL_ERR::NO_ROWS")
	dbErr := apperror.New(err, "not_found", "user not found in db")
	// service wraps the error
	svcErr := fmt.Errorf("(user service) -> %w", dbErr)
	// handler wraps it into a status error
	handlerErr := apperror.NewStatusError(svcErr, 404)

	errChain := apperror.ErrorChain(handlerErr)

	assert.Equal(t, "[404]: (user service) -> user not found in db <not_found>. SQL_ERR::NO_ROWS", errChain)
	assert.Equal(t, "(user service) -> user not found in db <not_found>. SQL_ERR::NO_ROWS", handlerErr.Error())
}

func TestAppError(t *testing.T) {
	dbErr := errors.New("SQL_ERR::NO_ROWS")
	appErr := apperror.New(dbErr, "not_found", "user not found in db")
	assert.Equal(t, "user not found in db <not_found>. SQL_ERR::NO_ROWS", appErr.Error())
}

func TestErrorCode(t *testing.T) {
	dbErr := errors.New("SQL_ERR::NO_ROWS")
	appErr := apperror.New(dbErr, "not_found", "user not found in db")

	assert.Equal(t, "", apperror.ErrorCode(dbErr))
	assert.Equal(t, "not_found", apperror.ErrorCode(appErr))
	assert.Equal(t, "user not found in db <not_found>. SQL_ERR::NO_ROWS", appErr.Error())
}