/*
---------------------------------------------------------
   Project activething
   Active Thing (activething.com) git.activething.com/go

   File name  err_info.go
   Created by DEV
   Modified   23/10/2023

   Copyright 2023 activething.com
---------------------------------------------------------
// 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 errs

import (
	"activething.com/go/gogo/core/opts"
	"bytes"
	"time"
)

type (

	// ErrInfo
	// Representa un objeto para añadir una capa de información addicional a un error
	//
	ErrInfo struct {
		/*embedded*/ error

		date    time.Time
		source  string
		help    string
		message string
		link    string
		details map[string]any
		stack   StackTrace
	}
)


func NewErrInfo(err error, options ...opts.OptionFnc[ErrInfo]) *ErrInfo {
	if err == nil {
		return nil
	}
	return opts.Apply(&ErrInfo{error: err}, options...)
}


func (i ErrInfo) Message() string {
	return i.message }


func (i ErrInfo) Source() string {
	return i.source }


func (i ErrInfo) Help() string {
	return i.help }


func (i ErrInfo) Link() string {
	return i.link }


func (i ErrInfo) Stack() StackTrace {
	if i.stack != nil {
		return i.stack
	}
	return getStackTrace(i.Cause())
}


func (i ErrInfo) Details() map[string]any {
	return i.Details() }


func (i ErrInfo) Cause() error {
	if cs, is := i.error.(Causer); is {
		return cs.Cause()
	}
	return Unwrap(i.error)
}


func (i ErrInfo) Unwrap() error {
	return i.Cause() }


func (i ErrInfo) Date() time.Time {
	return i.date }


func (i ErrInfo) Error () (res string) {
	bf := bytes.Buffer{}
	defer bf.Reset()

	bf.WriteString(i.error.Error())
	if len(i.message) > 0 {
		bf.WriteString("\nmessage: ")
		bf.WriteString(i.message)
	}
	if len(i.source) > 0 {
		bf.WriteString("\nsource: ")
		bf.WriteString(i.source)
	}
	//todo
	//if !i.date.IsZero() {
	//	bf.WriteString("\nTime: ")
	//	bf.WriteTime(i.date)
	//}
	if i.stack != nil {
		bf.WriteString("\nStack: ")
		bf.WriteString(i.stack.String())
	}
	res = bf.String()

	return res
}


/*
   ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

   I HAVE NO DESIRE TO WALK ON WATER," SAID SIDDHARTA.
   "LET THE OLD SHRAMANAS SATISFY THEMSELVES WITH SUCH SKILLS.

   SIDDHARTA
   - HERMANN HESSE -

   :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

*/