// ------------------------------------------------------------------------
//   Project atila
//   Active Thing (activething.com) git.activething.com/go
//
//   File name  scope.go
//   Created by DEV
//   Modified   22/02/2024
//
//   Copyright 2024 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 logs

import (
	"activething.com/go/gogo/core/opts"
	"fmt"
	"strings"
)

type (

	Scope 		 struct {
		loggerLevel

		level	 Level
		mode 	 ScopeMode

		path 	 string
		nodes 	 [][]byte

		parent 	 Loggable
		children []*Scope

		aggregators EntryAggregators
	}
)




func newScope (name string, level Level, parent Loggable, path string, nodes [][]byte, options ...opts.OptionFnc[Scope]) *Scope {
	if path != "" {
		path = fmt.Sprintf("%s%c%s",path,scopeSep,name)
	} else {
		path = name
	}

	return opts.Apply[Scope](&Scope {
		loggerLevel: *newLoggerLevel(name,level),
		parent     : parent,
		nodes 	   : append(nodes,[]byte(name)),
		path 	   : path,
	}, options ...)
}


func (s *Scope) Mode () (m ScopeMode) {
	s.mux.RLock()
	m = s.mode
	s.mux.RUnlock()
	return
}


func (s *Scope) SetMode(mode ScopeMode) {
	s.mux.Lock()
	s.mode = mode
	s.mux.Unlock()
}


func (s *Scope) Level() Level {
	return s.level }


func (s *Scope) Path () string {
	return s.path }


func (s *Scope) Nodes () [][]byte {
	return  s.nodes }



func (s *Scope) NewChildScope (path string, options ...opts.OptionFnc[Scope]) (*Scope,error) {
	s.mux.Lock()
	sc,er := s.newChildScope(strings.Split(strings.ToLower(path),string(scopeSep)),options ...)
	s.mux.Unlock()
	return sc,er
}

func (s *Scope)  newChildScope (path []string, options ...opts.OptionFnc[Scope])(*Scope,error){
	sc := s.getChildScope(path[0])
	if sc == nil {
		sc = newScope(path[0],s.level, s, s.path, s.nodes, options ...)
		s.children = append (s.children, sc)
		if len(path) == 1 {
			return sc, nil
		}
	} else if len(path) == 1 {
		return nil,G.ErrDuplicatedScope
	}
	return sc.newChildScope(path[1:],options...)
}



func (s *Scope) GetScope (name string) *Scope {
	return s.getScope(strings.Split(strings.ToLower(name),string(scopeSep))) }

func (s *Scope) getScope (nodes []string) *Scope {
	s.mux.RLock()
	sc := s.getChildScope(nodes[0])
	if sc != nil {
		if len(nodes) > 1 {
			sc = sc.getScope(nodes[1:])
		}
	}
	s.mux.RUnlock()
	return sc
}


func (s *Scope) getChildScope  (name string) *Scope {
	if i := s.findChildScope(name); i != -1 {
		return s.children[i]
	}
	return nil
}


func (s *Scope) findChildScope (name string) int {
	for i,s := range s.children {
		if name == s.name {
			return i
		}
	}
	return -1
}


func (s *Scope) Log (entry *Entry) error {
	s.mux.Lock()
	if s.mode.IsFilter() && s.level.Has(entry.Level) {
		s.mux.Unlock()
		return nil
	}
	if s.mode.IsCascade() {
		s.aggregators.Apply(entry)
	}
	s.mux.Unlock()
	return s.parent.Log(entry)
}


func (s *Scope) log(lvl Level, msg string, err error,options ...EntryFnc){
	s.mux.Lock()
	if !s.level.Has(lvl) {
		s.mux.Unlock()
		return
	}
	en := s.aggregators.Apply(NewEntry(nil,lvl,msg,err,options...))
	en.Scope = s.path
	en.Scopes= s.nodes
	s.mux.Unlock()

	s.parent.Log(en)
	G.entryPool.Put(en)

}