package openstack

import (
	"fmt"

	"github.com/gophercloud/gophercloud"
	tokens2 "github.com/gophercloud/gophercloud/openstack/identity/v2/tokens"
	tokens3 "github.com/gophercloud/gophercloud/openstack/identity/v3/tokens"
)

// ErrEndpointNotFound is the error when no suitable endpoint can be found
// in the user's catalog
type ErrEndpointNotFound struct{ *gophercloud.BaseError }

func (e ErrEndpointNotFound) Error() string {
	return "No suitable endpoint could be found in the service catalog."
}

// ErrInvalidAvailabilityProvided is the error when an invalid endpoint
// availability is provided
type ErrInvalidAvailabilityProvided struct{ *gophercloud.ErrInvalidInput }

func (e ErrInvalidAvailabilityProvided) Error() string {
	return "Unexpected availability in endpoint query"
}

// ErrMultipleMatchingEndpointsV2 is the error when more than one endpoint
// for the given options is found in the v2 catalog
type ErrMultipleMatchingEndpointsV2 struct {
	*gophercloud.BaseError
	Endpoints []tokens2.Endpoint
}

func (e *ErrMultipleMatchingEndpointsV2) Error() string {
	return fmt.Sprintf("Discovered %d matching endpoints: %#v", len(e.Endpoints), e.Endpoints)
}

// ErrMultipleMatchingEndpointsV3 is the error when more than one endpoint
// for the given options is found in the v3 catalog
type ErrMultipleMatchingEndpointsV3 struct {
	*gophercloud.BaseError
	Endpoints []tokens3.Endpoint
}

func (e *ErrMultipleMatchingEndpointsV3) Error() string {
	return fmt.Sprintf("Discovered %d matching endpoints: %#v", len(e.Endpoints), e.Endpoints)
}

// ErrNoAuthURL is the error when the OS_AUTH_URL environment variable is not
// found
type ErrNoAuthURL struct{ *gophercloud.ErrInvalidInput }

func (e *ErrNoAuthURL) Error() string {
	return "Environment variable OS_AUTH_URL needs to be set."
}

// ErrNoUsername is the error when the OS_USERNAME environment variable is not
// found
type ErrNoUsername struct{ *gophercloud.ErrInvalidInput }

func (e *ErrNoUsername) Error() string {
	return "Environment variable OS_USERNAME needs to be set."
}

// ErrNoPassword is the error when the OS_PASSWORD environment variable is not
// found
type ErrNoPassword struct{ *gophercloud.ErrInvalidInput }

func (e *ErrNoPassword) Error() string {
	return "Environment variable OS_PASSWORD needs to be set."
}