slack_morphism/models/common/
icon.rs

1use rsb_derive::Builder;
2use serde::de::{MapAccess, Visitor};
3use serde::ser::SerializeMap;
4use serde::{Deserialize, Deserializer, Serialize, Serializer};
5use serde_with::skip_serializing_none;
6use std::*;
7
8#[skip_serializing_none]
9#[derive(Debug, PartialEq, Clone, Serialize, Deserialize, Builder)]
10pub struct SlackIcon {
11    pub image_original: Option<String>,
12    pub image_default: Option<bool>,
13    #[serde(flatten)]
14    pub images: Option<SlackIconImages>,
15}
16
17#[skip_serializing_none]
18#[derive(Debug, PartialEq, Clone, Builder)]
19pub struct SlackIconImages {
20    pub resolutions: Vec<(u32, String)>,
21}
22
23const SLACK_ICON_JSON_PREFIX: &str = "image_";
24
25impl Serialize for SlackIconImages {
26    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
27    where
28        S: Serializer,
29    {
30        if self.resolutions.is_empty() {
31            serializer.serialize_none()
32        } else {
33            let mut res_map = serializer.serialize_map(Some(self.resolutions.len()))?;
34            for (res, link) in &self.resolutions {
35                let key: String = format!("{SLACK_ICON_JSON_PREFIX}{res}");
36                res_map.serialize_entry(&key, link)?;
37            }
38            res_map.end()
39        }
40    }
41}
42
43struct SlackIconImagesVisitor {}
44
45impl SlackIconImagesVisitor {
46    fn new() -> Self {
47        Self {}
48    }
49}
50
51impl<'de> Visitor<'de> for SlackIconImagesVisitor {
52    type Value = SlackIconImages;
53
54    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
55        formatter.write_str("a json contains images_ for icon")
56    }
57
58    fn visit_map<M>(self, mut access: M) -> Result<Self::Value, M::Error>
59    where
60        M: MapAccess<'de>,
61    {
62        let mut resolutions: Vec<(u32, String)> =
63            Vec::with_capacity(access.size_hint().unwrap_or(0));
64
65        while let Some(key) = access.next_key::<String>()? {
66            if key.starts_with(SLACK_ICON_JSON_PREFIX) {
67                let parsed_key: Vec<_> = key.split('_').collect();
68                if parsed_key.len() == 2 {
69                    let resolution: u32 = parsed_key[1].parse().unwrap();
70                    let value: String = access.next_value()?;
71                    resolutions.push((resolution, value).clone());
72                }
73            }
74        }
75
76        Ok(SlackIconImages::new(resolutions))
77    }
78}
79
80impl<'de> Deserialize<'de> for SlackIconImages {
81    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
82    where
83        D: Deserializer<'de>,
84    {
85        deserializer.deserialize_map(SlackIconImagesVisitor::new())
86    }
87}
slack_morphism/models/common/icon.rs

slack_morphism/models/common/
icon.rs
