package domain

import (
	"fmt"
	"time"
)

const (
	apiKeyMaxLength = 100
)

type APIKey struct {
	ID        int64
	Name      string
	Key       string
	UserID    int64
	CreatedAt time.Time
}

type CreateAPIKeyParams struct {
	name   string
	key    string
	userID int64
}

func NewCreateAPIKeyParams(name, key string, userID int64) (CreateAPIKeyParams, error) {
	if name == "" {
		return CreateAPIKeyParams{}, ValidationError{
			Field: "Name",
			Err:   ErrRequired,
		}
	}

	if len(name) > apiKeyMaxLength {
		return CreateAPIKeyParams{}, ValidationError{
			Field: "Name",
			Err: MaxLengthError{
				Max: apiKeyMaxLength,
			},
		}
	}

	if key == "" {
		return CreateAPIKeyParams{}, ValidationError{
			Field: "Key",
			Err:   ErrRequired,
		}
	}

	if userID < userIDMin {
		return CreateAPIKeyParams{}, ValidationError{
			Field: "UserID",
			Err: MinError{
				Min: userIDMin,
			},
		}
	}

	return CreateAPIKeyParams{name: name, key: key, userID: userID}, nil
}

func (c CreateAPIKeyParams) Name() string {
	return c.name
}

func (c CreateAPIKeyParams) Key() string {
	return c.key
}

func (c CreateAPIKeyParams) UserID() int64 {
	return c.userID
}

type APIKeyNotFoundError struct {
	Key string
}

func (e APIKeyNotFoundError) Error() string {
	return fmt.Sprintf("API key (key=%s) not found", e.Key)
}

func (e APIKeyNotFoundError) UserError() string {
	return e.Error()
}

func (e APIKeyNotFoundError) Code() ErrorCode {
	return ErrorCodeEntityNotFound
}