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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 (
"maunium.net/go/gomuks/lib/glob"
"maunium.net/go/gomatrix"
"encoding/gob"
)
func init() {
gob.Register(PushRuleArray{})
gob.Register(PushRuleMap{})
}
type PushRuleCollection interface {
GetActions(room Room, event *gomatrix.Event) PushActionArray
}
type PushRuleArray []*PushRule
func (rules PushRuleArray) SetType(typ PushRuleType) PushRuleArray {
for _, rule := range rules {
rule.Type = typ
}
return rules
}
func (rules PushRuleArray) GetActions(room Room, event *gomatrix.Event) PushActionArray {
for _, rule := range rules {
if !rule.Match(room, event) {
continue
}
return rule.Actions
}
return nil
}
type PushRuleMap struct {
Map map[string]*PushRule
Type PushRuleType
}
func (rules PushRuleArray) SetTypeAndMap(typ PushRuleType) PushRuleMap {
data := PushRuleMap{
Map: make(map[string]*PushRule),
Type: typ,
}
for _, rule := range rules {
rule.Type = typ
data.Map[rule.RuleID] = rule
}
return data
}
func (ruleMap PushRuleMap) GetActions(room Room, event *gomatrix.Event) PushActionArray {
var rule *PushRule
var found bool
switch ruleMap.Type {
case RoomRule:
rule, found = ruleMap.Map[event.RoomID]
case SenderRule:
rule, found = ruleMap.Map[event.Sender]
}
if found && rule.Match(room, event) {
return rule.Actions
}
return nil
}
func (ruleMap PushRuleMap) Unmap() PushRuleArray {
array := make(PushRuleArray, len(ruleMap.Map))
index := 0
for _, rule := range ruleMap.Map {
array[index] = rule
index++
}
return array
}
type PushRuleType string
const (
OverrideRule PushRuleType = "override"
ContentRule PushRuleType = "content"
RoomRule PushRuleType = "room"
SenderRule PushRuleType = "sender"
UnderrideRule PushRuleType = "underride"
)
type PushRule struct {
// The type of this rule.
Type PushRuleType `json:"-"`
// The ID of this rule.
// For room-specific rules and user-specific rules, this is the room or user ID (respectively)
// For other types of rules, this doesn't affect anything.
RuleID string `json:"rule_id"`
// The actions this rule should trigger when matched.
Actions PushActionArray `json:"actions"`
// Whether this is a default rule, or has been set explicitly.
Default bool `json:"default"`
// Whether or not this push rule is enabled.
Enabled bool `json:"enabled"`
// The conditions to match in order to trigger this rule.
// Only applicable to generic underride/override rules.
Conditions []*PushCondition `json:"conditions,omitempty"`
// Pattern for content-specific push rules
Pattern string `json:"pattern,omitempty"`
}
func (rule *PushRule) Match(room Room, event *gomatrix.Event) bool {
if !rule.Enabled {
return false
}
switch rule.Type {
case OverrideRule, UnderrideRule:
return rule.matchConditions(room, event)
case ContentRule:
return rule.matchPattern(room, event)
case RoomRule:
return rule.RuleID == event.RoomID
case SenderRule:
return rule.RuleID == event.Sender
default:
return false
}
}
func (rule *PushRule) matchConditions(room Room, event *gomatrix.Event) bool {
for _, cond := range rule.Conditions {
if !cond.Match(room, event) {
return false
}
}
return true
}
func (rule *PushRule) matchPattern(room Room, event *gomatrix.Event) bool {
pattern, err := glob.Compile(rule.Pattern)
if err != nil {
return false
}
text, _ := event.Content["body"].(string)
return pattern.MatchString(text)
}
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