[+] Option to select random flags (#487)

crates/hyfetch/src/bin/hyfetch.rs

@@ -24,7 +24,7 @@ use hyfetch::color_util::{
     NeofetchAsciiIndexedColor, PresetIndexedColor, Theme as _, ToAnsiString as _,
 };
 use hyfetch::distros::Distro;
-use hyfetch::models::{build_hex_color_profile, Config};
+use hyfetch::models::{build_hex_color_profile, Config, PresetValue};
 #[cfg(feature = "macchina")]
 use hyfetch::neofetch_util::macchina_path;
 use hyfetch::neofetch_util::{self, add_pkg_path, fastfetch_path, get_distro_ascii, get_distro_name, literal_input, ColorAlignment, NEOFETCH_COLORS_AC, NEOFETCH_COLOR_PATTERNS, TEST_ASCII};
@@ -153,9 +153,15 @@ fn main() -> Result<()> {
             .collect();
         preset_profiles.extend(config.custom_preset_profiles()?);
 
-        let presets: Vec<ColorProfile> = preset_profiles.values().cloned().collect();
+        if preset_string.contains(',') {
+            let presets: Vec<&str> = preset_string.split(',').map(|s| s.trim()).collect();
+            let mut rng = fastrand::Rng::new();
+            let selected_index = rng.usize(0..presets.len());
+            return parse_preset_string(presets[selected_index], config);
+        }
 
         if preset_string == "random" {
+            let presets: Vec<ColorProfile> = preset_profiles.values().cloned().collect();
             if presets.is_empty() {
                 return Err(anyhow::anyhow!("preset iterator should not be empty"));
             }
@@ -180,8 +186,11 @@ fn main() -> Result<()> {
     }
 
     // Get preset
-    let preset_string = options.preset.as_deref().unwrap_or(&config.preset);
-    let color_profile = parse_preset_string(preset_string, &config)?;
+    let preset_string = options
+        .preset
+        .clone()
+        .unwrap_or_else(|| config.preset.get_random_if_multiple());
+    let color_profile = parse_preset_string(&preset_string, &config)?;
     debug!(?color_profile, "color profile");
 
     // Lighten
@@ -1218,7 +1227,7 @@ fn create_config(
     // Create config
     clear_screen(Some(&title), color_mode, debug_mode).context("failed to clear screen")?;
     let config = Config {
-        preset: preset.as_ref().to_string(),
+        preset: PresetValue::from(preset.as_ref().to_string()),
         mode: color_mode,
         light_dark: Some(theme),
         auto_detect_light_dark: Some(det_bg.is_some()),

crates/hyfetch/src/cli_options.rs

@@ -55,7 +55,7 @@ pub fn options() -> OptionParser<Options> {
     let preset = long("preset")
         .short('p')
         .help(&*format!(
-            "Use preset or comma-separated color list or comma-separated hex colors (e.g., \"#ff0000,#00ff00,#0000ff\")
+            "Use preset or comma-separated color list or comma-separated hex colors (e.g., \"#ff0000,#00ff00,#0000ff\"). Comma-separated preset names will pick one randomly.
 PRESET={{{presets}}}",
             presets = <Preset as VariantNames>::VARIANTS
                 .iter()

crates/hyfetch/src/models.rs

@@ -10,7 +10,7 @@ use crate::types::{AnsiMode, Backend, TerminalTheme};
 
 #[derive(Clone, Debug, Deserialize, Serialize)]
 pub struct Config {
-    pub preset: String,
+    pub preset: PresetValue,
     pub mode: AnsiMode,
     pub auto_detect_light_dark: Option<bool>,
     pub light_dark: Option<TerminalTheme>,
@@ -156,3 +156,33 @@ mod args_serde {
         deserializer.deserialize_option(OptionVisitor)
     }
 }
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum PresetValue {
+    Single(String),
+    Multiple(Vec<String>),
+}
+
+impl From<String> for PresetValue {
+    fn from(s: String) -> Self {
+        PresetValue::Single(s)
+    }
+}
+
+impl PresetValue {
+    pub fn get_random_if_multiple(&self) -> String {
+        match self {
+            PresetValue::Single(s) => s.clone(),
+            PresetValue::Multiple(v) => {
+                if v.is_empty() {
+                    "random".to_owned()
+                } else {
+                    let mut rng = fastrand::Rng::new();
+                    let selected_index = rng.usize(0..v.len());
+                    v[selected_index].clone()
+                }
+            }
+        }
+    }
+}