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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2018 Tulir Asokan
//
// 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 pushrules
import (
"encoding/json"
"maunium.net/go/gomatrix"
)
type PushRuleset struct {
Override PushRuleArray
Content PushRuleArray
Room PushRuleMap
Sender PushRuleMap
Underride PushRuleArray
}
type rawPushRuleset struct {
Override PushRuleArray `json:"override"`
Content PushRuleArray `json:"content"`
Room PushRuleArray `json:"room"`
Sender PushRuleArray `json:"sender"`
Underride PushRuleArray `json:"underride"`
}
// UnmarshalJSON parses JSON into this PushRuleset.
//
// For override, sender and underride push rule arrays, the type is added
// to each PushRule and the array is used as-is.
//
// For room and sender push rule arrays, the type is added to each PushRule
// and the array is converted to a map with the rule ID as the key and the
// PushRule as the value.
func (rs *PushRuleset) UnmarshalJSON(raw []byte) (err error) {
data := rawPushRuleset{}
err = json.Unmarshal(raw, &data)
if err != nil {
return
}
rs.Override = data.Override.SetType(OverrideRule)
rs.Content = data.Content.SetType(ContentRule)
rs.Room = data.Room.SetTypeAndMap(RoomRule)
rs.Sender = data.Sender.SetTypeAndMap(SenderRule)
rs.Underride = data.Underride.SetType(UnderrideRule)
return
}
// MarshalJSON is the reverse of UnmarshalJSON()
func (rs *PushRuleset) MarshalJSON() ([]byte, error) {
data := rawPushRuleset{
Override: rs.Override,
Content: rs.Content,
Room: rs.Room.Unmap(),
Sender: rs.Sender.Unmap(),
Underride: rs.Underride,
}
return json.Marshal(&data)
}
// DefaultPushActions is the value returned if none of the rule
// collections in a Ruleset match the event given to GetActions()
var DefaultPushActions = make(PushActionArray, 0)
// GetActions matches the given event against all of the push rule
// collections in this push ruleset in the order of priority as
// specified in spec section 11.12.1.4.
func (rs *PushRuleset) GetActions(room Room, event *gomatrix.Event) (match PushActionArray) {
// Add push rule collections to array in priority order
arrays := []PushRuleCollection{rs.Override, rs.Content, rs.Room, rs.Sender, rs.Underride}
// Loop until one of the push rule collections matches the room/event combo.
for _, pra := range arrays {
if match = pra.GetActions(room, event); match != nil {
// Match found, return it.
return
}
}
// No match found, return default actions.
return DefaultPushActions
}
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