1use std::{path::Path, str, sync::Arc};
 2
 3use collections::HashMap;
 4
 5use gpui::{AppContext, AssetSource, Global};
 6use serde_derive::Deserialize;
 7use util::{maybe, paths::PathExt};
 8
 9#[derive(Deserialize, Debug)]
10struct TypeConfig {
11    icon: Arc<str>,
12}
13
14#[derive(Deserialize, Debug)]
15pub struct FileIcons {
16    stems: HashMap<String, String>,
17    suffixes: HashMap<String, String>,
18    types: HashMap<String, TypeConfig>,
19}
20
21impl Global for FileIcons {}
22
23const COLLAPSED_DIRECTORY_TYPE: &str = "collapsed_folder";
24const EXPANDED_DIRECTORY_TYPE: &str = "expanded_folder";
25const COLLAPSED_CHEVRON_TYPE: &str = "collapsed_chevron";
26const EXPANDED_CHEVRON_TYPE: &str = "expanded_chevron";
27pub const FILE_TYPES_ASSET: &str = "icons/file_icons/file_types.json";
28
29pub fn init(assets: impl AssetSource, cx: &mut AppContext) {
30    cx.set_global(FileIcons::new(assets))
31}
32
33impl FileIcons {
34    pub fn new(assets: impl AssetSource) -> Self {
35        assets
36            .load("icons/file_icons/file_types.json")
37            .and_then(|file| {
38                serde_json::from_str::<FileIcons>(str::from_utf8(&file).unwrap())
39                    .map_err(Into::into)
40            })
41            .unwrap_or_else(|_| FileIcons {
42                stems: HashMap::default(),
43                suffixes: HashMap::default(),
44                types: HashMap::default(),
45            })
46    }
47
48    pub fn get_icon(path: &Path, cx: &AppContext) -> Option<Arc<str>> {
49        let this = cx.try_global::<Self>()?;
50
51        // FIXME: Associate a type with the languages and have the file's language
52        //        override these associations
53        maybe!({
54            let suffix = path.icon_stem_or_suffix()?;
55
56            if let Some(type_str) = this.stems.get(suffix) {
57                return this.get_type_icon(type_str);
58            }
59
60            this.suffixes
61                .get(suffix)
62                .and_then(|type_str| this.get_type_icon(type_str))
63        })
64        .or_else(|| this.get_type_icon("default"))
65    }
66
67    pub fn get_type_icon(&self, typ: &str) -> Option<Arc<str>> {
68        self.types
69            .get(typ)
70            .map(|type_config| type_config.icon.clone())
71    }
72
73    pub fn get_folder_icon(expanded: bool, cx: &AppContext) -> Option<Arc<str>> {
74        let this = cx.try_global::<Self>()?;
75
76        let key = if expanded {
77            EXPANDED_DIRECTORY_TYPE
78        } else {
79            COLLAPSED_DIRECTORY_TYPE
80        };
81
82        this.get_type_icon(key)
83    }
84
85    pub fn get_chevron_icon(expanded: bool, cx: &AppContext) -> Option<Arc<str>> {
86        let this = cx.try_global::<Self>()?;
87
88        let key = if expanded {
89            EXPANDED_CHEVRON_TYPE
90        } else {
91            COLLAPSED_CHEVRON_TYPE
92        };
93
94        this.get_type_icon(key)
95    }
96}