// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.

package data

import (
	"errors"
	"net/url"
	"decl/internal/transport"
)

var (
	ErrInvalidURI error = errors.New("Invalid URI")
)

type URIParser interface {
	URL() *url.URL
	NewResource(document Document) (newResource Resource, err error)
	ConstructResource(res Resource) (err error)
	Converter() (converter Converter, err error)
	Exists() bool

	ContentReaderStream() (*transport.Reader, error)
	ContentWriterStream() (*transport.Writer, error)

	String() string
	SetURL(url *url.URL)
	Extension() (string, string)

	ContentType() string
	IsEmpty() bool
}

type Identifier interface {
	URI() string
	SetParsedURI(URIParser) error
}

type DocumentElement interface {
	Identifier
}

type Selector[Item comparable] func(r Item) bool

type ResourceSelector Selector[Resource]

type DeclarationSelector Selector[Declaration]

type BlockSelector Selector[Block]

type ElementSelector Selector[DocumentElement]