feat: support multiple themes in one file (#1855)

* feat: support multiple themes in a one file

* chore: update example of multiple themes to gruvbox

example/themes/gruvbox-light.kdl

@@ -1,16 +0,0 @@
-themes {
-    gruvbox-light {
-        fg 60 56 54
-        bg 251 82 75
-        black 40 40 40
-        red 205 75 69
-        green 152 151 26
-        yellow 215 153 33
-        blue 69 133 136
-        magenta 177 98 134
-        cyan 104 157 106
-        white 213 196 161
-        orange 214 93 14
-    }
-}
-

example/themes/gruvbox.kdl

@@ -1,4 +1,17 @@
 themes {
+    gruvbox-light {
+        fg 60 56 54
+        bg 251 82 75
+        black 40 40 40
+        red 205 75 69
+        green 152 151 26
+        yellow 215 153 33
+        blue 69 133 136
+        magenta 177 98 134
+        cyan 104 157 106
+        white 213 196 161
+        orange 214 93 14
+    }
     gruvbox-dark {
         fg 213 196 161
         bg 40 40 40

zellij-utils/src/input/unit/snapshots/zellij_utils__input__theme__theme_test__dracula_theme_from_file.snap

@@ -1,11 +1,9 @@
 ---
 source: zellij-utils/src/input/./unit/theme_test.rs
-assertion_line: 15
 expression: "format!(\"{:#?}\", theme)"
 ---
-(
-    "dracula",
-    Theme {
+{
+    "dracula": Theme {
         palette: Palette {
             source: Default,
             theme_hue: Dark,
@@ -106,4 +104,4 @@ expression: "format!(\"{:#?}\", theme)"
             ),
         },
     },
-)
+}

zellij-utils/src/input/unit/theme_test.rs

@@ -11,13 +11,13 @@ fn theme_test_dir(theme: String) -> PathBuf {
 #[test]
 fn dracula_theme_from_file() {
     let path = theme_test_dir("dracula.kdl".into());
-    let theme = Theme::from_path(path).unwrap();
+    let theme = Themes::from_path(path).unwrap();
     assert_snapshot!(format!("{:#?}", theme));
 }
 
 #[test]
 fn no_theme_is_err() {
     let path = theme_test_dir("nonexistent.kdl".into());
-    let theme = Theme::from_path(path);
+    let theme = Themes::from_path(path);
     assert!(theme.is_err());
 }

zellij-utils/src/kdl/mod.rs

@@ -1587,10 +1587,8 @@ impl Themes {
         let themes = Themes::from_data(themes);
         Ok(themes)
     }
-}
 
-impl Theme {
-    pub fn from_path(path_to_theme_file: PathBuf) -> Result<(String, Self), ConfigError> {
+    pub fn from_path(path_to_theme_file: PathBuf) -> Result<Self, ConfigError> {
         // String is the theme name
         let mut file = File::open(path_to_theme_file.clone())?;
         let mut kdl_config = String::new();
@@ -1602,34 +1600,6 @@ impl Theme {
             kdl_config.span().len(),
         ))?;
         let all_themes_in_file = Themes::from_kdl(kdl_themes)?;
-        let theme_file_name = path_to_theme_file
-            .file_name()
-            .ok_or(ConfigError::new_kdl_error(
-                "Failed to find file name".into(),
-                kdl_config.span().offset(),
-                kdl_config.span().len(),
-            ))?
-            .to_string_lossy()
-            .to_string();
-        if let Some(theme_name) = theme_file_name.strip_suffix(".kdl") {
-            let theme =
-                all_themes_in_file
-                    .get_theme(theme_name)
-                    .ok_or(ConfigError::new_kdl_error(
-                        format!(
-                            "Not theme with name {} found in file {:?}",
-                            theme_name, path_to_theme_file
-                        ),
-                        kdl_config.span().offset(),
-                        kdl_config.span().len(),
-                    ))?;
-            Ok((theme_name.to_string(), theme.clone()))
-        } else {
-            Err(ConfigError::new_kdl_error(
-                "no theme file found".into(),
-                kdl_config.span().offset(),
-                kdl_config.span().len(),
-            ))
-        }
+        Ok(all_themes_in_file)
     }
 }

zellij-utils/src/setup.rs

@@ -1,4 +1,4 @@
-use crate::input::theme::Theme;
+use crate::input::theme::Themes;
 use crate::{
     cli::{CliArgs, Command},
     consts::{
@@ -241,10 +241,8 @@ impl Setup {
                 for entry in (theme_dir.read_dir()?).flatten() {
                     if let Some(extension) = entry.path().extension() {
                         if extension == "kdl" {
-                            match Theme::from_path(entry.path()) {
-                                Ok((theme_name, theme)) => {
-                                    config.themes.insert(theme_name, theme);
-                                },
+                            match Themes::from_path(entry.path()) {
+                                Ok(themes) => config.themes = config.themes.merge(themes),
                                 Err(e) => {
                                     log::error!("error loading theme file: {:?}", e);
                                 },