1use std::collections::HashMap;
2use std::sync::{Arc, OnceLock};
3
4use db::kvp::KEY_VALUE_STORE;
5use editor::Editor;
6use extension_host::ExtensionStore;
7use gpui::{AppContext as _, Context, Entity, SharedString, Window};
8use language::Buffer;
9use ui::prelude::*;
10use util::rel_path::RelPath;
11use workspace::notifications::simple_message_notification::MessageNotification;
12use workspace::{Workspace, notifications::NotificationId};
13
14const SUGGESTIONS_BY_EXTENSION_ID: &[(&str, &[&str])] = &[
15 ("astro", &["astro"]),
16 ("beancount", &["beancount"]),
17 ("clojure", &["bb", "clj", "cljc", "cljs", "edn"]),
18 ("neocmake", &["CMakeLists.txt", "cmake"]),
19 ("csharp", &["cs"]),
20 ("cython", &["pyx", "pxd", "pxi"]),
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 ("nim", &["nim"]),
53 ("nix", &["nix"]),
54 ("nu", &["nu"]),
55 ("ocaml", &["ml", "mli"]),
56 ("php", &["php"]),
57 ("powershell", &["ps1", "psm1"]),
58 ("prisma", &["prisma"]),
59 ("proto", &["proto"]),
60 ("purescript", &["purs"]),
61 ("r", &["r", "R"]),
62 ("racket", &["rkt"]),
63 ("rescript", &["res", "resi"]),
64 ("rst", &["rst"]),
65 ("ruby", &["rb", "erb"]),
66 ("scheme", &["scm"]),
67 ("scss", &["scss"]),
68 ("sql", &["sql"]),
69 ("svelte", &["svelte"]),
70 ("swift", &["swift"]),
71 ("templ", &["templ"]),
72 ("terraform", &["tf", "tfvars", "hcl"]),
73 ("toml", &["Cargo.lock", "toml"]),
74 ("typst", &["typ"]),
75 ("vue", &["vue"]),
76 ("wgsl", &["wgsl"]),
77 ("wit", &["wit"]),
78 ("xml", &["xml"]),
79 ("zig", &["zig"]),
80];
81
82fn suggested_extensions() -> &'static HashMap<&'static str, Arc<str>> {
83 static SUGGESTIONS_BY_PATH_SUFFIX: OnceLock<HashMap<&str, Arc<str>>> = OnceLock::new();
84 SUGGESTIONS_BY_PATH_SUFFIX.get_or_init(|| {
85 SUGGESTIONS_BY_EXTENSION_ID
86 .iter()
87 .flat_map(|(name, path_suffixes)| {
88 let name = Arc::<str>::from(*name);
89 path_suffixes
90 .iter()
91 .map(move |suffix| (*suffix, name.clone()))
92 })
93 .collect()
94 })
95}
96
97#[derive(Debug, PartialEq, Eq, Clone)]
98struct SuggestedExtension {
99 pub extension_id: Arc<str>,
100 pub file_name_or_extension: Arc<str>,
101}
102
103/// Returns the suggested extension for the given [`Path`].
104fn suggested_extension(path: &RelPath) -> Option<SuggestedExtension> {
105 let file_extension: Option<Arc<str>> = path.extension().map(|extension| extension.into());
106 let file_name: Option<Arc<str>> = path.file_name().map(|name| name.into());
107
108 let (file_name_or_extension, extension_id) = None
109 // We suggest against file names first, as these suggestions will be more
110 // specific than ones based on the file extension.
111 .or_else(|| {
112 file_name.clone().zip(
113 file_name
114 .as_deref()
115 .and_then(|file_name| suggested_extensions().get(file_name)),
116 )
117 })
118 .or_else(|| {
119 file_extension.clone().zip(
120 file_extension
121 .as_deref()
122 .and_then(|file_extension| suggested_extensions().get(file_extension)),
123 )
124 })?;
125
126 Some(SuggestedExtension {
127 extension_id: extension_id.clone(),
128 file_name_or_extension,
129 })
130}
131
132fn language_extension_key(extension_id: &str) -> String {
133 format!("{}_extension_suggest", extension_id)
134}
135
136pub(crate) fn suggest(buffer: Entity<Buffer>, window: &mut Window, cx: &mut Context<Workspace>) {
137 let Some(file) = buffer.read(cx).file().cloned() else {
138 return;
139 };
140
141 let Some(SuggestedExtension {
142 extension_id,
143 file_name_or_extension,
144 }) = suggested_extension(file.path())
145 else {
146 return;
147 };
148
149 let key = language_extension_key(&extension_id);
150 let Ok(None) = KEY_VALUE_STORE.read_kvp(&key) else {
151 return;
152 };
153
154 cx.on_next_frame(window, move |workspace, _, cx| {
155 let Some(editor) = workspace.active_item_as::<Editor>(cx) else {
156 return;
157 };
158
159 if editor.read(cx).buffer().read(cx).as_singleton().as_ref() != Some(&buffer) {
160 return;
161 }
162
163 struct ExtensionSuggestionNotification;
164
165 let notification_id = NotificationId::composite::<ExtensionSuggestionNotification>(
166 SharedString::from(extension_id.clone()),
167 );
168
169 workspace.show_notification(notification_id, cx, |cx| {
170 cx.new(move |cx| {
171 MessageNotification::new(
172 format!(
173 "Do you want to install the recommended '{}' extension for '{}' files?",
174 extension_id, file_name_or_extension
175 ),
176 cx,
177 )
178 .primary_message("Yes, install extension")
179 .primary_icon(IconName::Check)
180 .primary_icon_color(Color::Success)
181 .primary_on_click({
182 let extension_id = extension_id.clone();
183 move |_window, cx| {
184 let extension_id = extension_id.clone();
185 let extension_store = ExtensionStore::global(cx);
186 extension_store.update(cx, move |store, cx| {
187 store.install_latest_extension(extension_id, cx);
188 });
189 }
190 })
191 .secondary_message("No, don't install it")
192 .secondary_icon(IconName::Close)
193 .secondary_icon_color(Color::Error)
194 .secondary_on_click(move |_window, cx| {
195 let key = language_extension_key(&extension_id);
196 db::write_and_log(cx, move || {
197 KEY_VALUE_STORE.write_kvp(key, "dismissed".to_string())
198 });
199 })
200 })
201 });
202 })
203}
204
205#[cfg(test)]
206mod tests {
207 use super::*;
208 use util::rel_path::rel_path;
209
210 #[test]
211 pub fn test_suggested_extension() {
212 assert_eq!(
213 suggested_extension(rel_path("Cargo.toml")),
214 Some(SuggestedExtension {
215 extension_id: "toml".into(),
216 file_name_or_extension: "toml".into()
217 })
218 );
219 assert_eq!(
220 suggested_extension(rel_path("Cargo.lock")),
221 Some(SuggestedExtension {
222 extension_id: "toml".into(),
223 file_name_or_extension: "Cargo.lock".into()
224 })
225 );
226 assert_eq!(
227 suggested_extension(rel_path("Dockerfile")),
228 Some(SuggestedExtension {
229 extension_id: "dockerfile".into(),
230 file_name_or_extension: "Dockerfile".into()
231 })
232 );
233 assert_eq!(
234 suggested_extension(rel_path("a/b/c/d/.gitignore")),
235 Some(SuggestedExtension {
236 extension_id: "git-firefly".into(),
237 file_name_or_extension: ".gitignore".into()
238 })
239 );
240 assert_eq!(
241 suggested_extension(rel_path("a/b/c/d/test.gleam")),
242 Some(SuggestedExtension {
243 extension_id: "gleam".into(),
244 file_name_or_extension: "gleam".into()
245 })
246 );
247 }
248}