1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

use serde::{de, Deserialize, Serialize, Serializer};
use serde_json::value::RawValue as RawJsonValue;

use crate::serde::from_raw_json_value;

#[cfg(feature = "unstable-msc3931")]
use super::RoomVersionFeature;
use super::{PushCondition, RoomMemberCountIs};

impl Serialize for PushCondition {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        match self {
            PushCondition::_Custom(custom) => custom.serialize(serializer),
            _ => PushConditionSerDeHelper::from(self.clone()).serialize(serializer),
        }
    }
}

impl<'de> Deserialize<'de> for PushCondition {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: de::Deserializer<'de>,
    {
        let json = Box::<RawJsonValue>::deserialize(deserializer)?;
        let ExtractKind { kind } = from_raw_json_value(&json)?;

        match kind.as_ref() {
            "event_match"
            | "contains_display_name"
            | "room_member_count"
            | "sender_notification_permission" => {
                let helper: PushConditionSerDeHelper = from_raw_json_value(&json)?;
                Ok(helper.into())
            }
            #[cfg(feature = "unstable-msc3931")]
            "org.matrix.msc3931.room_version_supports" => {
                let helper: PushConditionSerDeHelper = from_raw_json_value(&json)?;
                Ok(helper.into())
            }
            _ => from_raw_json_value(&json).map(Self::_Custom),
        }
    }
}

#[derive(Deserialize)]
struct ExtractKind {
    kind: String,
}

#[derive(Serialize, Deserialize)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
#[serde(tag = "kind", rename_all = "snake_case")]
enum PushConditionSerDeHelper {
    /// A glob pattern match on a field of the event.
    EventMatch {
        /// The dot-separated field of the event to match.
        key: String,

        /// The glob-style pattern to match against.
        ///
        /// Patterns with no special glob characters should be treated as having asterisks
        /// prepended and appended when testing the condition.
        pattern: String,
    },

    /// Matches unencrypted messages where `content.body` contains the owner's display name in that
    /// room.
    ContainsDisplayName,

    /// Matches the current number of members in the room.
    RoomMemberCount {
        /// The condition on the current number of members in the room.
        is: RoomMemberCountIs,
    },

    /// Takes into account the current power levels in the room, ensuring the sender of the event
    /// has high enough power to trigger the notification.
    SenderNotificationPermission {
        /// The field in the power level event the user needs a minimum power level for.
        ///
        /// Fields must be specified under the `notifications` property in the power level event's
        /// `content`.
        key: String,
    },

    /// Apply the rule only to rooms that support a given feature.
    #[cfg(feature = "unstable-msc3931")]
    #[serde(rename = "org.matrix.msc3931.room_version_supports")]
    RoomVersionSupports {
        /// The feature the room must support for the push rule to apply.
        feature: RoomVersionFeature,
    },
}

impl From<PushConditionSerDeHelper> for PushCondition {
    fn from(value: PushConditionSerDeHelper) -> Self {
        match value {
            PushConditionSerDeHelper::EventMatch { key, pattern } => {
                Self::EventMatch { key, pattern }
            }
            PushConditionSerDeHelper::ContainsDisplayName => Self::ContainsDisplayName,
            PushConditionSerDeHelper::RoomMemberCount { is } => Self::RoomMemberCount { is },
            PushConditionSerDeHelper::SenderNotificationPermission { key } => {
                Self::SenderNotificationPermission { key }
            }
            #[cfg(feature = "unstable-msc3931")]
            PushConditionSerDeHelper::RoomVersionSupports { feature } => {
                Self::RoomVersionSupports { feature }
            }
        }
    }
}

impl From<PushCondition> for PushConditionSerDeHelper {
    fn from(value: PushCondition) -> Self {
        match value {
            PushCondition::EventMatch { key, pattern } => Self::EventMatch { key, pattern },
            PushCondition::ContainsDisplayName => Self::ContainsDisplayName,
            PushCondition::RoomMemberCount { is } => Self::RoomMemberCount { is },
            PushCondition::SenderNotificationPermission { key } => {
                Self::SenderNotificationPermission { key }
            }
            #[cfg(feature = "unstable-msc3931")]
            PushCondition::RoomVersionSupports { feature } => Self::RoomVersionSupports { feature },
            PushCondition::_Custom(_) => unimplemented!(),
        }
    }
}