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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"
// PushActionType is the type of a PushAction
type PushActionType string
// The allowed push action types as specified in spec section 11.12.1.4.1.
const (
ActionNotify PushActionType = "notify"
ActionDontNotify PushActionType = "dont_notify"
ActionCoalesce PushActionType = "coalesce"
ActionSetTweak PushActionType = "set_tweak"
)
// PushActionTweak is the type of the tweak in SetTweak push actions.
type PushActionTweak string
// The allowed tweak types as specified in spec section 11.12.1.4.1.1.
const (
TweakSound PushActionTweak = "sound"
TweakHighlight PushActionTweak = "highlight"
)
// PushActionArray is an array of PushActions.
type PushActionArray []*PushAction
// PushActionArrayShould contains the important information parsed from a PushActionArray.
type PushActionArrayShould struct {
// Whether the array contained a Notify, DontNotify or Coalesce action type.
// Deprecated: an empty array should be treated as no notification, so there's no reason to check this field.
NotifySpecified bool
// Whether the event in question should trigger a notification.
Notify bool
// Whether the event in question should be highlighted.
Highlight bool
// Whether the event in question should trigger a sound alert.
PlaySound bool
// The name of the sound to play if PlaySound is true.
SoundName string
}
// Should parses this push action array and returns the relevant details wrapped in a PushActionArrayShould struct.
func (actions PushActionArray) Should() (should PushActionArrayShould) {
for _, action := range actions {
switch action.Action {
case ActionNotify, ActionCoalesce:
should.Notify = true
should.NotifySpecified = true
case ActionDontNotify:
should.Notify = false
should.NotifySpecified = true
case ActionSetTweak:
switch action.Tweak {
case TweakHighlight:
var ok bool
should.Highlight, ok = action.Value.(bool)
if !ok {
// Highlight value not specified, so assume true since the tweak is set.
should.Highlight = true
}
case TweakSound:
should.SoundName = action.Value.(string)
should.PlaySound = len(should.SoundName) > 0
}
}
}
return
}
// PushAction is a single action that should be triggered when receiving a message.
type PushAction struct {
Action PushActionType
Tweak PushActionTweak
Value interface{}
}
// UnmarshalJSON parses JSON into this PushAction.
//
// - If the JSON is a single string, the value is stored in the Action field.
// - If the JSON is an object with the set_tweak field, Action will be set to
// "set_tweak", Tweak will be set to the value of the set_tweak field and
// and Value will be set to the value of the value field.
// - In any other case, the function does nothing.
func (action *PushAction) UnmarshalJSON(raw []byte) error {
var data interface{}
err := json.Unmarshal(raw, &data)
if err != nil {
return err
}
switch val := data.(type) {
case string:
action.Action = PushActionType(val)
case map[string]interface{}:
tweak, ok := val["set_tweak"].(string)
if ok {
action.Action = ActionSetTweak
action.Tweak = PushActionTweak(tweak)
action.Value, _ = val["value"]
}
}
return nil
}
// MarshalJSON is the reverse of UnmarshalJSON()
func (action *PushAction) MarshalJSON() (raw []byte, err error) {
if action.Action == ActionSetTweak {
data := map[string]interface{}{
"set_tweak": action.Tweak,
"value": action.Value,
}
return json.Marshal(&data)
}
data := string(action.Action)
return json.Marshal(&data)
}
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