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

package data

import (
	"context"
	"errors"
	"decl/internal/mapper"
	"decl/internal/transport"
	"gitea.rosskeen.house/rosskeen.house/machine"
	"io"
	"io/fs"
)

var (
	ErrInvalidResource error = errors.New("Invalid resource")
)

type ResourceMapper mapper.Map[string, Declaration]

type StateTransformer interface {
	Apply() error
}

// Used by the resource factory to initialize new resources.
type ResourceInitializer interface {
	Init(uri URIParser) error
}

type Resource interface {
	Identifier
	Type() string
	StateMachine() machine.Stater
	UseConfig(config ConfigurationValueGetter)
	ResolveId(context.Context) string
	Loader
	StateTransformer
	Crudder
	Validator
	Clone() Resource
	SetResourceMapper(ResourceMapper)
}

type Declaration interface {
	Identifier
	ResourceType() TypeName
	ResolveId(context.Context) string
	Loader
	Validator
	DocumentStateTransformer
	Resource() Resource
	Clone() Declaration
}

func NewResourceMapper() ResourceMapper {
	return mapper.New[string, Declaration]()
}

type ContentHasher interface {
	Hash() []byte
	HashHexString() string
}

type ContentIdentifier interface {
	ContentType() string
}

type ContentReader interface {
	ContentReaderStream() (*transport.Reader, error)
}

type ContentWriter interface {
	ContentWriterStream() (*transport.Writer, error)
}

type ContentReadWriter interface {
	ContentReader
	ContentWriter
}

type ContentGetter interface {
	GetContent(w io.Writer) (contentReader io.ReadCloser, err error)
}

type ContentSetter interface {
	SetContent(r io.Reader) error
}

type ContentGetSetter interface {
	ContentGetter
	ContentSetter
}

type FileResource interface {
	SetBasePath(int)
	FilePath() string
	SetFileInfo(fs.FileInfo) error
	FileInfo() fs.FileInfo
	ContentGetSetter
	GetContentSourceRef() string
	SetContentSourceRef(uri string)
	SetFS(fs.FS)
	PathNormalization(bool)
	NormalizePath() error
	GetTarget() string
	SetGzipContent(bool)
}

type Signed interface {
	Signature() Signature
}

type FileInfoGetter interface {
	Stat() (fs.FileInfo, error)
}