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 ("scheme", &["scm"]),
62 ("sql", &["sql"]),
63 ("svelte", &["svelte"]),
64 ("swift", &["swift"]),
65 ("templ", &["templ"]),
66 ("terraform", &["tf", "tfvars", "hcl"]),
67 ("toml", &["Cargo.lock", "toml"]),
68 ("vue", &["vue"]),
69 ("wgsl", &["wgsl"]),
70 ("zig", &["zig"]),
71];
72
73fn suggested_extensions() -> &'static HashMap<&'static str, Arc<str>> {
74 static SUGGESTIONS_BY_PATH_SUFFIX: OnceLock<HashMap<&str, Arc<str>>> = OnceLock::new();
75 SUGGESTIONS_BY_PATH_SUFFIX.get_or_init(|| {
76 SUGGESTIONS_BY_EXTENSION_ID
77 .into_iter()
78 .flat_map(|(name, path_suffixes)| {
79 let name = Arc::<str>::from(*name);
80 path_suffixes
81 .into_iter()
82 .map(move |suffix| (*suffix, name.clone()))
83 })
84 .collect()
85 })
86}
87
88#[derive(Debug, PartialEq, Eq, Clone)]
89struct SuggestedExtension {
90 pub extension_id: Arc<str>,
91 pub file_name_or_extension: Arc<str>,
92}
93
94/// Returns the suggested extension for the given [`Path`].
95fn suggested_extension(path: impl AsRef<Path>) -> Option<SuggestedExtension> {
96 let path = path.as_ref();
97
98 let file_extension: Option<Arc<str>> = path
99 .extension()
100 .and_then(|extension| Some(extension.to_str()?.into()));
101 let file_name: Option<Arc<str>> = path
102 .file_name()
103 .and_then(|file_name| Some(file_name.to_str()?.into()));
104
105 let (file_name_or_extension, extension_id) = None
106 // We suggest against file names first, as these suggestions will be more
107 // specific than ones based on the file extension.
108 .or_else(|| {
109 file_name.clone().zip(
110 file_name
111 .as_deref()
112 .and_then(|file_name| suggested_extensions().get(file_name)),
113 )
114 })
115 .or_else(|| {
116 file_extension.clone().zip(
117 file_extension
118 .as_deref()
119 .and_then(|file_extension| suggested_extensions().get(file_extension)),
120 )
121 })?;
122
123 Some(SuggestedExtension {
124 extension_id: extension_id.clone(),
125 file_name_or_extension,
126 })
127}
128
129fn language_extension_key(extension_id: &str) -> String {
130 format!("{}_extension_suggest", extension_id)
131}
132
133pub(crate) fn suggest(buffer: Model<Buffer>, cx: &mut ViewContext<Workspace>) {
134 let Some(file) = buffer.read(cx).file().cloned() else {
135 return;
136 };
137
138 let Some(SuggestedExtension {
139 extension_id,
140 file_name_or_extension,
141 }) = suggested_extension(file.path())
142 else {
143 return;
144 };
145
146 let key = language_extension_key(&extension_id);
147 let Ok(None) = KEY_VALUE_STORE.read_kvp(&key) else {
148 return;
149 };
150
151 cx.on_next_frame(move |workspace, cx| {
152 let Some(editor) = workspace.active_item_as::<Editor>(cx) else {
153 return;
154 };
155
156 if editor.read(cx).buffer().read(cx).as_singleton().as_ref() != Some(&buffer) {
157 return;
158 }
159
160 struct ExtensionSuggestionNotification;
161
162 let notification_id = NotificationId::identified::<ExtensionSuggestionNotification>(
163 SharedString::from(extension_id.clone()),
164 );
165
166 workspace.show_notification(notification_id, cx, |cx| {
167 cx.new_view(move |_cx| {
168 simple_message_notification::MessageNotification::new(format!(
169 "Do you want to install the recommended '{}' extension for '{}' files?",
170 extension_id, file_name_or_extension
171 ))
172 .with_click_message("Yes")
173 .on_click({
174 let extension_id = extension_id.clone();
175 move |cx| {
176 let extension_id = extension_id.clone();
177 let extension_store = ExtensionStore::global(cx);
178 extension_store.update(cx, move |store, cx| {
179 store.install_latest_extension(extension_id, cx);
180 });
181 }
182 })
183 .with_secondary_click_message("No")
184 .on_secondary_click(move |cx| {
185 let key = language_extension_key(&extension_id);
186 db::write_and_log(cx, move || {
187 KEY_VALUE_STORE.write_kvp(key, "dismissed".to_string())
188 });
189 })
190 })
191 });
192 })
193}
194
195#[cfg(test)]
196mod tests {
197 use super::*;
198
199 #[test]
200 pub fn test_suggested_extension() {
201 assert_eq!(
202 suggested_extension("Cargo.toml"),
203 Some(SuggestedExtension {
204 extension_id: "toml".into(),
205 file_name_or_extension: "toml".into()
206 })
207 );
208 assert_eq!(
209 suggested_extension("Cargo.lock"),
210 Some(SuggestedExtension {
211 extension_id: "toml".into(),
212 file_name_or_extension: "Cargo.lock".into()
213 })
214 );
215 assert_eq!(
216 suggested_extension("Dockerfile"),
217 Some(SuggestedExtension {
218 extension_id: "dockerfile".into(),
219 file_name_or_extension: "Dockerfile".into()
220 })
221 );
222 assert_eq!(
223 suggested_extension("a/b/c/d/.gitignore"),
224 Some(SuggestedExtension {
225 extension_id: "git-firefly".into(),
226 file_name_or_extension: ".gitignore".into()
227 })
228 );
229 assert_eq!(
230 suggested_extension("a/b/c/d/test.gleam"),
231 Some(SuggestedExtension {
232 extension_id: "gleam".into(),
233 file_name_or_extension: "gleam".into()
234 })
235 );
236 }
237}