// ------------------------------------------------------------------------
//   Project atila
//   Active Thing (activething.com) git.activething.com/go
//
//   File name  bweek.go
//   Created by DEV
//   Modified   21/02/2024
//
//   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 bdates

import "math/bits"

const(

	BWeekDaysMon BWeekDays = 1 << iota
	BWeekDaysTue
	BWeekDaysWed
	BWeekDaysThu
	BWeekDaysFri
	BWeekDaysSat
	BWeekDaysSun

	_BWeekFlag

	BWeekDaysAll = 0x1111111


)

type (

	// BWeekDays
	// Type: uint8
	// Desc: Representa una lista de los dias de la semana
	//  	 a través de un byte
	BWeekDays uint8

)


func (w BWeekDays) GetFlag() bool {
	return w&_BWeekFlag==_BWeekFlag }


func (w BWeekDays) SetFlag(val bool) BWeekDays {
	if val {
		return w|_BWeekFlag
	}
	return w&^_BWeekFlag
}




func (w BWeekDays) SetDay (num int, val bool) BWeekDays {
	if num < 0 || num > 7 {
		return w
	}
	if val {
		w  |= 1 << num-1
	} else {
		w &^= 1 << num-1
	}
	return w
}


func (w BWeekDays)  GetDay (num int) bool {
	if num < 0 || num > 7 {
		return false
	}
	c := BWeekDays(1 << num-1)
	return (w&c)==c
}


func (w BWeekDays) Invert () BWeekDays {
	return ^w }


func (w BWeekDays) Count   () int {
	return bits.OnesCount8(uint8(w)) }


func (w BWeekDays) List    () []int {
	c := BWeekDays(1)
	r := make([]int,0,7)
	for i:=1; i<=7; i++ {
		if c&w == c {
			r = append(r,i)
		}
		c <<=1
	}
	return r
}


func (w BWeekDays) ToSlice () []bool {
	c := BWeekDays(1)
	r := make([]bool,7)
	for i:=0; i<7; i++ {
		r[i]=c&w == c
		c <<=1
	}
	return r
}



func (w BWeekDays) Common (dst BWeekDays) BWeekDays { return w & dst }