1use std::collections::HashMap;
2use std::path::Path;
3use std::sync::{Arc, OnceLock};
4
5use db::kvp::KEY_VALUE_STORE;
6use editor::Editor;
7use extension::ExtensionStore;
8use gpui::{Model, VisualContext};
9use language::Buffer;
10use ui::{SharedString, ViewContext};
11use workspace::{
12 notifications::{simple_message_notification, NotificationId},
13 Workspace,
14};
15
16const SUGGESTIONS_BY_EXTENSION_ID: &[(&str, &[&str])] = &[
17 ("astro", &["astro"]),
18 ("beancount", &["beancount"]),
19 ("clojure", &["bb", "clj", "cljc", "cljs", "edn"]),
20 ("csharp", &["cs"]),
21 ("dart", &["dart"]),
22 ("dockerfile", &["Dockerfile"]),
23 ("elisp", &["el"]),
24 ("elm", &["elm"]),
25 ("erlang", &["erl", "hrl"]),
26 ("fish", &["fish"]),
27 (
28 "git-firefly",
29 &[
30 ".gitconfig",
31 ".gitignore",
32 "COMMIT_EDITMSG",
33 "EDIT_DESCRIPTION",
34 "MERGE_MSG",
35 "NOTES_EDITMSG",
36 "TAG_EDITMSG",
37 "git-rebase-todo",
38 ],
39 ),
40 ("gleam", &["gleam"]),
41 ("glsl", &["vert", "frag"]),
42 ("graphql", &["gql", "graphql"]),
43 ("haskell", &["hs"]),
44 ("html", &["htm", "html", "shtml"]),
45 ("java", &["java"]),
46 ("kotlin", &["kt"]),
47 ("latex", &["tex"]),
48 ("lua", &["lua"]),
49 ("make", &["Makefile"]),
50 ("nix", &["nix"]),
51 ("ocaml", &["ml", "mli"]),
52 ("php", &["php"]),
53 ("prisma", &["prisma"]),
54 ("purescript", &["purs"]),
55 ("r", &["r", "R"]),
56 ("racket", &["rkt"]),
57 ("sql", &["sql"]),
58 ("scheme", &["scm"]),
59 ("svelte", &["svelte"]),
60 ("swift", &["swift"]),
61 ("templ", &["templ"]),
62 ("terraform", &["tf", "tfvars", "hcl"]),
63 ("toml", &["Cargo.lock", "toml"]),
64 ("wgsl", &["wgsl"]),
65 ("zig", &["zig"]),
66];
67
68fn suggested_extensions() -> &'static HashMap<&'static str, Arc<str>> {
69 static SUGGESTIONS_BY_PATH_SUFFIX: OnceLock<HashMap<&str, Arc<str>>> = OnceLock::new();
70 SUGGESTIONS_BY_PATH_SUFFIX.get_or_init(|| {
71 SUGGESTIONS_BY_EXTENSION_ID
72 .into_iter()
73 .flat_map(|(name, path_suffixes)| {
74 let name = Arc::<str>::from(*name);
75 path_suffixes
76 .into_iter()
77 .map(move |suffix| (*suffix, name.clone()))
78 })
79 .collect()
80 })
81}
82
83#[derive(Debug, PartialEq, Eq, Clone)]
84struct SuggestedExtension {
85 pub extension_id: Arc<str>,
86 pub file_name_or_extension: Arc<str>,
87}
88
89/// Returns the suggested extension for the given [`Path`].
90fn suggested_extension(path: impl AsRef<Path>) -> Option<SuggestedExtension> {
91 let path = path.as_ref();
92
93 let file_extension: Option<Arc<str>> = path
94 .extension()
95 .and_then(|extension| Some(extension.to_str()?.into()));
96 let file_name: Option<Arc<str>> = path
97 .file_name()
98 .and_then(|file_name| Some(file_name.to_str()?.into()));
99
100 let (file_name_or_extension, extension_id) = None
101 // We suggest against file names first, as these suggestions will be more
102 // specific than ones based on the file extension.
103 .or_else(|| {
104 file_name.clone().zip(
105 file_name
106 .as_deref()
107 .and_then(|file_name| suggested_extensions().get(file_name)),
108 )
109 })
110 .or_else(|| {
111 file_extension.clone().zip(
112 file_extension
113 .as_deref()
114 .and_then(|file_extension| suggested_extensions().get(file_extension)),
115 )
116 })?;
117
118 Some(SuggestedExtension {
119 extension_id: extension_id.clone(),
120 file_name_or_extension,
121 })
122}
123
124fn language_extension_key(extension_id: &str) -> String {
125 format!("{}_extension_suggest", extension_id)
126}
127
128pub(crate) fn suggest(buffer: Model<Buffer>, cx: &mut ViewContext<Workspace>) {
129 let Some(file) = buffer.read(cx).file().cloned() else {
130 return;
131 };
132
133 let Some(SuggestedExtension {
134 extension_id,
135 file_name_or_extension,
136 }) = suggested_extension(file.path())
137 else {
138 return;
139 };
140
141 let key = language_extension_key(&extension_id);
142 let Ok(None) = KEY_VALUE_STORE.read_kvp(&key) else {
143 return;
144 };
145
146 cx.on_next_frame(move |workspace, cx| {
147 let Some(editor) = workspace.active_item_as::<Editor>(cx) else {
148 return;
149 };
150
151 if editor.read(cx).buffer().read(cx).as_singleton().as_ref() != Some(&buffer) {
152 return;
153 }
154
155 struct ExtensionSuggestionNotification;
156
157 let notification_id = NotificationId::identified::<ExtensionSuggestionNotification>(
158 SharedString::from(extension_id.clone()),
159 );
160
161 workspace.show_notification(notification_id, cx, |cx| {
162 cx.new_view(move |_cx| {
163 simple_message_notification::MessageNotification::new(format!(
164 "Do you want to install the recommended '{}' extension for '{}' files?",
165 extension_id, file_name_or_extension
166 ))
167 .with_click_message("Yes")
168 .on_click({
169 let extension_id = extension_id.clone();
170 move |cx| {
171 let extension_id = extension_id.clone();
172 let extension_store = ExtensionStore::global(cx);
173 extension_store.update(cx, move |store, cx| {
174 store.install_latest_extension(extension_id, cx);
175 });
176 }
177 })
178 .with_secondary_click_message("No")
179 .on_secondary_click(move |cx| {
180 let key = language_extension_key(&extension_id);
181 db::write_and_log(cx, move || {
182 KEY_VALUE_STORE.write_kvp(key, "dismissed".to_string())
183 });
184 })
185 })
186 });
187 })
188}
189
190#[cfg(test)]
191mod tests {
192 use super::*;
193
194 #[test]
195 pub fn test_suggested_extension() {
196 assert_eq!(
197 suggested_extension("Cargo.toml"),
198 Some(SuggestedExtension {
199 extension_id: "toml".into(),
200 file_name_or_extension: "toml".into()
201 })
202 );
203 assert_eq!(
204 suggested_extension("Cargo.lock"),
205 Some(SuggestedExtension {
206 extension_id: "toml".into(),
207 file_name_or_extension: "Cargo.lock".into()
208 })
209 );
210 assert_eq!(
211 suggested_extension("Dockerfile"),
212 Some(SuggestedExtension {
213 extension_id: "dockerfile".into(),
214 file_name_or_extension: "Dockerfile".into()
215 })
216 );
217 assert_eq!(
218 suggested_extension("a/b/c/d/.gitignore"),
219 Some(SuggestedExtension {
220 extension_id: "git-firefly".into(),
221 file_name_or_extension: ".gitignore".into()
222 })
223 );
224 assert_eq!(
225 suggested_extension("a/b/c/d/test.gleam"),
226 Some(SuggestedExtension {
227 extension_id: "gleam".into(),
228 file_name_or_extension: "gleam".into()
229 })
230 );
231 }
232}