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

package config

import (
	"errors"
	"fmt"
_	"net/url"
_	"decl/internal/codec"
_	"io"
	"decl/internal/types"
	"decl/internal/data"
	"strings"
)

var (
	ErrUnknownConfigurationType             = errors.New("Unknown configuration type")
	ErrUnknownConfigurationKey              = errors.New("Unknown configuration key")
	ConfigTypes *types.Types[Configuration] = types.New[Configuration]()
	ConfigSourceTypes *types.Types[ConfigSource] = types.New[ConfigSource]()
	ConfigTargetTypes *types.Types[ConfigTarget] = types.New[ConfigTarget]()
)

type TypeName string //`json:"type"`

type Configuration interface {
	Type() string
	data.Reader
	GetValue(name string) (any, error)
	Clone() Configuration
}

func NewConfiguration(uri string) Configuration {
	c, e := ConfigTypes.New(uri)
	if e == nil {
		return c
	}
	return nil
}

func (n *TypeName) UnmarshalJSON(b []byte) error {
	ConfigTypeName := strings.Trim(string(b), "\"")
	if ConfigTypes.Has(ConfigTypeName) {
		*n = TypeName(ConfigTypeName)
		return nil
	}
	return fmt.Errorf("%w: %s", ErrUnknownConfigurationType, ConfigTypeName)
}