// ------------------------------------------------------------------------
// 🚀 Project active3
// 🔗 Active Thing (activething.com) git.activething.com/go
//
//    File name  active.go
// ✍️ Created by DEV
// 📅 Modified   10/05/2024
//
// 🔒 Copyright 2024 activething.com
//  
// 📜 LICENSE --------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

package pkjson

import (
	"apack"
	"cdcs/cjson"
	"encoding"
	"encoding/json"
	"reflect"
	"strconv"
	"sync"
	"time"
)

type stringify interface{ String() string }

const (

	sep byte = ','
	fsep  byte = ':'
)


var (


	g = struct {

		stringifyType 		reflect.Type
		jsonMarshalerType 	reflect.Type
		textMarshalerType 	reflect.Type

		keyStringer 		*keyStringer
		packersCache		sync.Map

	} {
		stringifyType 	 : reflect.TypeOf((*stringify)(nil)).Elem(),
		jsonMarshalerType: reflect.TypeOf((*json.Marshaler)(nil)).Elem(),
		textMarshalerType: reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem(),

		keyStringer		 : newKeyStringer(func(s *keyStringer){

			// Registramos los tipos conocidos
			 fnI := func(e *rMapEntry, k reflect.Value) error {
				 e.k = strconv.FormatInt(k.Int(), 10)
				 return nil }

			 s.stringers[reflect.TypeOf(int   (0))]=fnI
			 s.stringers[reflect.TypeOf(int8  (0))]=fnI
			 s.stringers[reflect.TypeOf(int16 (0))]=fnI
			 s.stringers[reflect.TypeOf(int32 (0))]=fnI
			 s.stringers[reflect.TypeOf(int64 (0))]=fnI

			 fnU := func(e *rMapEntry, k reflect.Value) error {
				e.k = strconv.FormatUint(k.Uint(), 10)
				return nil }

			s.stringers[reflect.TypeOf(uint   (0))]=fnU
			s.stringers[reflect.TypeOf(uint8  (0))]=fnU
			s.stringers[reflect.TypeOf(uint16 (0))]=fnU
			s.stringers[reflect.TypeOf(uint32 (0))]=fnU
			s.stringers[reflect.TypeOf(uint64 (0))]=fnU
			s.stringers[reflect.TypeOf(uintptr(0))]=fnU

			s.stringers[reflect.TypeOf(false)]= func(e *rMapEntry, k reflect.Value) error {
			  	e.k = strconv.FormatBool(k.Bool())
				return nil }

			s.stringers[reflect.TypeOf(float64(0))]=func(e *rMapEntry, k reflect.Value) error {
				e.k = cjson.JSONFloat(k.Float(),64)
				return nil }

			s.stringers[reflect.TypeOf(float32(0))]=func(e *rMapEntry, k reflect.Value) error {
				e.k = cjson.JSONFloat(k.Float(), 32)
				return nil }

			s.stringers[reflect.TypeOf(time.Time{})]=func(e *rMapEntry, r reflect.Value) error {
				e.k = (r.Interface().(time.Time)).String()
				return nil }

			s.stringers[reflect.TypeOf(time.Duration(0))]=func(e *rMapEntry, r reflect.Value) error {
				e.k =  strconv.FormatInt(r.Int(), 10)
				return nil
			}

			// Registramos los ifaceCheckers conocido que pueden convertir su valor en clave
			s.RegInterfaceChecker(

				// Stringify Check
				func(r reflect.Type) rMapEntryFnc {
					if r.Implements(reflect.TypeOf((*stringify)(nil)).Elem()) {
						return func(e *rMapEntry, v reflect.Value) error {
							if v.Kind() == reflect.Pointer && v.IsNil() {
								return nil
							}
							e.k = (v.Interface().(stringify)).String()
							e.f = apack.FlagScapeHTML
							return nil
						}
					}
					return nil
				},

				// Text Marshaller
				func(r reflect.Type) rMapEntryFnc {
					if r.Implements(reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem()) {
						return func(e *rMapEntry, v reflect.Value) error {
							if v.Kind() == reflect.Pointer && v.IsNil() {
								return nil
							}
							bf, er := v.Interface().(encoding.TextMarshaler).MarshalText()
							if er != nil {
								return er
							}
							e.k = string(bf)
							e.f = apack.FlagScapeHTML
							return nil
						}
					}
					return nil
				})
		}),
	}

)