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// Copyright (c) 2020 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package pushrules
import (
"encoding/json"
"maunium.net/go/mautrix/event"
)
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 = PushActionArray{&PushAction{Action: ActionDontNotify}}
func (rs *PushRuleset) GetMatchingRule(room Room, evt *event.Event) (rule *PushRule) {
// 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 pra == nil {
continue
}
if rule = pra.GetMatchingRule(room, evt); rule != nil {
// Match found, return it.
return
}
}
// No match found
return nil
}
// 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, evt *event.Event) (match PushActionArray) {
actions := rs.GetMatchingRule(room, evt).GetActions()
if actions == nil {
// No match found, return default actions.
return DefaultPushActions
}
return actions
}
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