/*
Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
Copyright (C) ITsysCOM GmbH

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

package engine

import (
	"sort"

	"github.com/cgrates/cgrates/utils"
)

type Attribute struct {
	FieldName  string
	Initial    string
	Substitute string
	Append     bool
}

type AttributeProfile struct {
	Tenant             string
	ID                 string
	Context            string // bind this AttributeProfile to specific context
	FilterIDs          []string
	ActivationInterval *utils.ActivationInterval        // Activation interval
	Attributes         map[string]map[string]*Attribute // map[FieldName][InitialValue]*Attribute
	Weight             float64
}

func (als *AttributeProfile) TenantID() string {
	return utils.ConcatenatedKey(als.Tenant, als.ID)
}

// AttributeProfiles is a sortable list of Attribute profiles
type AttributeProfiles []*AttributeProfile

// Sort is part of sort interface, sort based on Weight
func (aps AttributeProfiles) Sort() {
	sort.Slice(aps, func(i, j int) bool { return aps[i].Weight > aps[j].Weight })
}

type ExternalAttributeProfile struct {
	Tenant             string
	ID                 string
	Context            string // bind this AttributeProfile to specific context
	FilterIDs          []string
	ActivationInterval *utils.ActivationInterval // Activation interval
	Attributes         []*Attribute
	Weight             float64
}

func (eap *ExternalAttributeProfile) AsAttributeProfile() *AttributeProfile {
	alsPrf := &AttributeProfile{
		Tenant:             eap.Tenant,
		ID:                 eap.ID,
		Context:            eap.Context,
		FilterIDs:          eap.FilterIDs,
		ActivationInterval: eap.ActivationInterval,
		Weight:             eap.Weight,
	}
	alsMap := make(map[string]map[string]*Attribute)
	for _, als := range eap.Attributes {
		alsMap[als.FieldName] = make(map[string]*Attribute)
		alsMap[als.FieldName][als.Initial] = als
	}
	alsPrf.Attributes = alsMap
	return alsPrf
}

func NewExternalAttributeProfileFromAttributeProfile(alsPrf *AttributeProfile) *ExternalAttributeProfile {
	extals := &ExternalAttributeProfile{
		Tenant:             alsPrf.Tenant,
		ID:                 alsPrf.ID,
		Context:            alsPrf.Context,
		ActivationInterval: alsPrf.ActivationInterval,
		FilterIDs:          alsPrf.FilterIDs,
		Weight:             alsPrf.Weight,
	}
	for key, val := range alsPrf.Attributes {
		for key2, val2 := range val {
			extals.Attributes = append(extals.Attributes, &Attribute{
				FieldName:  key,
				Initial:    key2,
				Substitute: val2.Substitute,
				Append:     val2.Append,
			})
		}
	}
	return extals
}