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 ("elixir", &["ex", "exs", "heex"]),
25 ("elm", &["elm"]),
26 ("erlang", &["erl", "hrl"]),
27 ("fish", &["fish"]),
28 (
29 "git-firefly",
30 &[
31 ".gitconfig",
32 ".gitignore",
33 "COMMIT_EDITMSG",
34 "EDIT_DESCRIPTION",
35 "MERGE_MSG",
36 "NOTES_EDITMSG",
37 "TAG_EDITMSG",
38 "git-rebase-todo",
39 ],
40 ),
41 ("gleam", &["gleam"]),
42 ("glsl", &["vert", "frag"]),
43 ("graphql", &["gql", "graphql"]),
44 ("haskell", &["hs"]),
45 ("html", &["htm", "html", "shtml"]),
46 ("java", &["java"]),
47 ("kotlin", &["kt"]),
48 ("latex", &["tex"]),
49 ("log", &["log"]),
50 ("lua", &["lua"]),
51 ("make", &["Makefile"]),
52 ("nix", &["nix"]),
53 ("nu", &["nu"]),
54 ("ocaml", &["ml", "mli"]),
55 ("php", &["php"]),
56 ("prisma", &["prisma"]),
57 ("purescript", &["purs"]),
58 ("r", &["r", "R"]),
59 ("racket", &["rkt"]),
60 ("rescript", &["res", "resi"]),
61 ("ruby", &["rb", "erb"]),
62 ("scheme", &["scm"]),
63 ("scss", &["scss"]),
64 ("sql", &["sql"]),
65 ("svelte", &["svelte"]),
66 ("swift", &["swift"]),
67 ("templ", &["templ"]),
68 ("terraform", &["tf", "tfvars", "hcl"]),
69 ("toml", &["Cargo.lock", "toml"]),
70 ("vue", &["vue"]),
71 ("wgsl", &["wgsl"]),
72 ("zig", &["zig"]),
73];
74
75fn suggested_extensions() -> &'static HashMap<&'static str, Arc<str>> {
76 static SUGGESTIONS_BY_PATH_SUFFIX: OnceLock<HashMap<&str, Arc<str>>> = OnceLock::new();
77 SUGGESTIONS_BY_PATH_SUFFIX.get_or_init(|| {
78 SUGGESTIONS_BY_EXTENSION_ID
79 .into_iter()
80 .flat_map(|(name, path_suffixes)| {
81 let name = Arc::<str>::from(*name);
82 path_suffixes
83 .into_iter()
84 .map(move |suffix| (*suffix, name.clone()))
85 })
86 .collect()
87 })
88}
89
90#[derive(Debug, PartialEq, Eq, Clone)]
91struct SuggestedExtension {
92 pub extension_id: Arc<str>,
93 pub file_name_or_extension: Arc<str>,
94}
95
96/// Returns the suggested extension for the given [`Path`].
97fn suggested_extension(path: impl AsRef<Path>) -> Option<SuggestedExtension> {
98 let path = path.as_ref();
99
100 let file_extension: Option<Arc<str>> = path
101 .extension()
102 .and_then(|extension| Some(extension.to_str()?.into()));
103 let file_name: Option<Arc<str>> = path
104 .file_name()
105 .and_then(|file_name| Some(file_name.to_str()?.into()));
106
107 let (file_name_or_extension, extension_id) = None
108 // We suggest against file names first, as these suggestions will be more
109 // specific than ones based on the file extension.
110 .or_else(|| {
111 file_name.clone().zip(
112 file_name
113 .as_deref()
114 .and_then(|file_name| suggested_extensions().get(file_name)),
115 )
116 })
117 .or_else(|| {
118 file_extension.clone().zip(
119 file_extension
120 .as_deref()
121 .and_then(|file_extension| suggested_extensions().get(file_extension)),
122 )
123 })?;
124
125 Some(SuggestedExtension {
126 extension_id: extension_id.clone(),
127 file_name_or_extension,
128 })
129}
130
131fn language_extension_key(extension_id: &str) -> String {
132 format!("{}_extension_suggest", extension_id)
133}
134
135pub(crate) fn suggest(buffer: Model<Buffer>, cx: &mut ViewContext<Workspace>) {
136 let Some(file) = buffer.read(cx).file().cloned() else {
137 return;
138 };
139
140 let Some(SuggestedExtension {
141 extension_id,
142 file_name_or_extension,
143 }) = suggested_extension(file.path())
144 else {
145 return;
146 };
147
148 let key = language_extension_key(&extension_id);
149 let Ok(None) = KEY_VALUE_STORE.read_kvp(&key) else {
150 return;
151 };
152
153 cx.on_next_frame(move |workspace, cx| {
154 let Some(editor) = workspace.active_item_as::<Editor>(cx) else {
155 return;
156 };
157
158 if editor.read(cx).buffer().read(cx).as_singleton().as_ref() != Some(&buffer) {
159 return;
160 }
161
162 struct ExtensionSuggestionNotification;
163
164 let notification_id = NotificationId::identified::<ExtensionSuggestionNotification>(
165 SharedString::from(extension_id.clone()),
166 );
167
168 workspace.show_notification(notification_id, cx, |cx| {
169 cx.new_view(move |_cx| {
170 simple_message_notification::MessageNotification::new(format!(
171 "Do you want to install the recommended '{}' extension for '{}' files?",
172 extension_id, file_name_or_extension
173 ))
174 .with_click_message("Yes")
175 .on_click({
176 let extension_id = extension_id.clone();
177 move |cx| {
178 let extension_id = extension_id.clone();
179 let extension_store = ExtensionStore::global(cx);
180 extension_store.update(cx, move |store, cx| {
181 store.install_latest_extension(extension_id, cx);
182 });
183 }
184 })
185 .with_secondary_click_message("No")
186 .on_secondary_click(move |cx| {
187 let key = language_extension_key(&extension_id);
188 db::write_and_log(cx, move || {
189 KEY_VALUE_STORE.write_kvp(key, "dismissed".to_string())
190 });
191 })
192 })
193 });
194 })
195}
196
197#[cfg(test)]
198mod tests {
199 use super::*;
200
201 #[test]
202 pub fn test_suggested_extension() {
203 assert_eq!(
204 suggested_extension("Cargo.toml"),
205 Some(SuggestedExtension {
206 extension_id: "toml".into(),
207 file_name_or_extension: "toml".into()
208 })
209 );
210 assert_eq!(
211 suggested_extension("Cargo.lock"),
212 Some(SuggestedExtension {
213 extension_id: "toml".into(),
214 file_name_or_extension: "Cargo.lock".into()
215 })
216 );
217 assert_eq!(
218 suggested_extension("Dockerfile"),
219 Some(SuggestedExtension {
220 extension_id: "dockerfile".into(),
221 file_name_or_extension: "Dockerfile".into()
222 })
223 );
224 assert_eq!(
225 suggested_extension("a/b/c/d/.gitignore"),
226 Some(SuggestedExtension {
227 extension_id: "git-firefly".into(),
228 file_name_or_extension: ".gitignore".into()
229 })
230 );
231 assert_eq!(
232 suggested_extension("a/b/c/d/test.gleam"),
233 Some(SuggestedExtension {
234 extension_id: "gleam".into(),
235 file_name_or_extension: "gleam".into()
236 })
237 );
238 }
239}