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
132
133
134
135
136
137
138
139
140
141
142

use serde_repr::{Deserialize_repr, Serialize_repr};

#[derive(Clone, Copy, Debug, Deserialize_repr, Eq, Hash, PartialEq, Serialize_repr)]
#[repr(u8)]
pub enum ChannelType {
    GuildText = 0,
    Private = 1,
    GuildVoice = 2,
    Group = 3,
    GuildCategory = 4,
    GuildNews = 5,
    GuildStore = 6,
    GuildNewsThread = 10,
    GuildPublicThread = 11,
    GuildPrivateThread = 12,
    GuildStageVoice = 13,
    /// Channel in a [hub] containing the listed servers.
    ///
    /// [hub]: https://support.discord.com/hc/en-us/articles/4406046651927-Discord-Student-Hubs-FAQ
    GuildDirectory = 14,
    /// Channel that can only contain threads.
    GuildForum = 15,
}

impl ChannelType {
    /// Whether the channel type is that of a guild.
    ///
    /// The following channel types are considered guild channel types:
    ///
    /// - [`GuildCategory`][`Self::GuildCategory`]
    /// - [`GuildDirectory`][`Self::GuildDirectory`]
    /// - [`GuildNews`][`Self::GuildNews`]
    /// - [`GuildStore`][`Self::GuildStore`]
    /// - [`GuildNewsThread`][`Self::GuildNewsThread`]
    /// - [`GuildPublicThread`][`Self::GuildPublicThread`]
    /// - [`GuildPrivateThread`][`Self::GuildPrivateThread`]
    /// - [`GuildStageVoice`][`Self::GuildStageVoice`]
    /// - [`GuildText`][`Self::GuildText`]
    /// - [`GuildVoice`][`Self::GuildVoice`]
    pub const fn is_guild(self) -> bool {
        matches!(
            self,
            Self::GuildCategory
                | Self::GuildDirectory
                | Self::GuildNews
                | Self::GuildStore
                | Self::GuildNewsThread
                | Self::GuildPublicThread
                | Self::GuildPrivateThread
                | Self::GuildStageVoice
                | Self::GuildText
                | Self::GuildVoice
        )
    }

    /// Whether the channel type is a thread.
    ///
    /// The following channel types are considered guild channel types:
    ///
    /// - [`GuildNewsThread`][`Self::GuildNewsThread`]
    /// - [`GuildPublicThread`][`Self::GuildPublicThread`]
    /// - [`GuildPrivateThread`][`Self::GuildPrivateThread`]
    pub const fn is_thread(self) -> bool {
        matches!(
            self,
            Self::GuildNewsThread | Self::GuildPublicThread | Self::GuildPrivateThread
        )
    }

    /// Name of the variant as a string slice.
    pub const fn name(self) -> &'static str {
        match self {
            Self::Group => "Group",
            Self::GuildCategory => "GuildCategory",
            Self::GuildDirectory => "GuildDirectory",
            Self::GuildForum => "GuildForum",
            Self::GuildNews => "GuildNews",
            Self::GuildNewsThread => "GuildNewsThread",
            Self::GuildPrivateThread => "GuildPrivateThread",
            Self::GuildPublicThread => "GuildPublicThread",
            Self::GuildStageVoice => "GuildStageVoice",
            Self::GuildStore => "GuildStore",
            Self::GuildText => "GuildText",
            Self::GuildVoice => "GuildVoice",
            Self::Private => "Private",
        }
    }
}

#[cfg(test)]
mod tests {
    use super::ChannelType;
    use serde_test::Token;
    use static_assertions::const_assert;

    const_assert!(ChannelType::GuildCategory.is_guild());
    const_assert!(ChannelType::GuildDirectory.is_guild());
    const_assert!(ChannelType::GuildNews.is_guild());
    const_assert!(ChannelType::GuildStore.is_guild());
    const_assert!(ChannelType::GuildNewsThread.is_guild());
    const_assert!(ChannelType::GuildPublicThread.is_guild());
    const_assert!(ChannelType::GuildPrivateThread.is_guild());
    const_assert!(ChannelType::GuildStageVoice.is_guild());
    const_assert!(ChannelType::GuildText.is_guild());
    const_assert!(ChannelType::GuildVoice.is_guild());

    const_assert!(ChannelType::GuildNewsThread.is_thread());
    const_assert!(ChannelType::GuildPublicThread.is_thread());
    const_assert!(ChannelType::GuildPrivateThread.is_thread());

    #[test]
    fn test_variants() {
        serde_test::assert_tokens(&ChannelType::GuildText, &[Token::U8(0)]);
        serde_test::assert_tokens(&ChannelType::Private, &[Token::U8(1)]);
        serde_test::assert_tokens(&ChannelType::GuildVoice, &[Token::U8(2)]);
        serde_test::assert_tokens(&ChannelType::Group, &[Token::U8(3)]);
        serde_test::assert_tokens(&ChannelType::GuildCategory, &[Token::U8(4)]);
        serde_test::assert_tokens(&ChannelType::GuildNews, &[Token::U8(5)]);
        serde_test::assert_tokens(&ChannelType::GuildStore, &[Token::U8(6)]);
        serde_test::assert_tokens(&ChannelType::GuildNewsThread, &[Token::U8(10)]);
        serde_test::assert_tokens(&ChannelType::GuildPublicThread, &[Token::U8(11)]);
        serde_test::assert_tokens(&ChannelType::GuildPrivateThread, &[Token::U8(12)]);
        serde_test::assert_tokens(&ChannelType::GuildStageVoice, &[Token::U8(13)]);
        serde_test::assert_tokens(&ChannelType::GuildDirectory, &[Token::U8(14)]);
    }

    #[test]
    fn test_names() {
        assert_eq!("Group", ChannelType::Group.name());
        assert_eq!("GuildCategory", ChannelType::GuildCategory.name());
        assert_eq!("GuildDirectory", ChannelType::GuildDirectory.name());
        assert_eq!("GuildNews", ChannelType::GuildNews.name());
        assert_eq!("GuildNewsThread", ChannelType::GuildNewsThread.name());
        assert_eq!("GuildPrivateThread", ChannelType::GuildPrivateThread.name());
        assert_eq!("GuildPublicThread", ChannelType::GuildPublicThread.name());
        assert_eq!("GuildStageVoice", ChannelType::GuildStageVoice.name());
        assert_eq!("GuildStore", ChannelType::GuildStore.name());
        assert_eq!("GuildText", ChannelType::GuildText.name());
        assert_eq!("GuildVoice", ChannelType::GuildVoice.name());
        assert_eq!("Private", ChannelType::Private.name());
    }
}