Refactoring

seq/src/model/project.rs

@@ -0,0 +1,174 @@
+use serde::{Deserialize, Serialize};
+
+use crate::config::{DEFAULT_LENGTH, MAX_BANKS, MAX_PATTERNS, MAX_STEPS};
+
+#[derive(Clone, Copy, Serialize, Deserialize, Default, PartialEq)]
+pub enum PatternSpeed {
+    Eighth,  // 1/8x
+    Quarter, // 1/4x
+    Half,    // 1/2x
+    #[default]
+    Normal, // 1x
+    Double,  // 2x
+    Quad,    // 4x
+    Octo,    // 8x
+}
+
+impl PatternSpeed {
+    pub fn multiplier(&self) -> f64 {
+        match self {
+            Self::Eighth => 0.125,
+            Self::Quarter => 0.25,
+            Self::Half => 0.5,
+            Self::Normal => 1.0,
+            Self::Double => 2.0,
+            Self::Quad => 4.0,
+            Self::Octo => 8.0,
+        }
+    }
+
+    pub fn label(&self) -> &'static str {
+        match self {
+            Self::Eighth => "1/8x",
+            Self::Quarter => "1/4x",
+            Self::Half => "1/2x",
+            Self::Normal => "1x",
+            Self::Double => "2x",
+            Self::Quad => "4x",
+            Self::Octo => "8x",
+        }
+    }
+
+    pub fn next(&self) -> Self {
+        match self {
+            Self::Eighth => Self::Quarter,
+            Self::Quarter => Self::Half,
+            Self::Half => Self::Normal,
+            Self::Normal => Self::Double,
+            Self::Double => Self::Quad,
+            Self::Quad => Self::Octo,
+            Self::Octo => Self::Octo,
+        }
+    }
+
+    pub fn prev(&self) -> Self {
+        match self {
+            Self::Eighth => Self::Eighth,
+            Self::Quarter => Self::Eighth,
+            Self::Half => Self::Quarter,
+            Self::Normal => Self::Half,
+            Self::Double => Self::Normal,
+            Self::Quad => Self::Double,
+            Self::Octo => Self::Quad,
+        }
+    }
+
+    pub fn from_label(s: &str) -> Option<Self> {
+        match s.trim() {
+            "1/8x" | "1/8" | "0.125x" => Some(Self::Eighth),
+            "1/4x" | "1/4" | "0.25x" => Some(Self::Quarter),
+            "1/2x" | "1/2" | "0.5x" => Some(Self::Half),
+            "1x" | "1" => Some(Self::Normal),
+            "2x" | "2" => Some(Self::Double),
+            "4x" | "4" => Some(Self::Quad),
+            "8x" | "8" => Some(Self::Octo),
+            _ => None,
+        }
+    }
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct Step {
+    pub active: bool,
+    pub script: String,
+    #[serde(skip)]
+    pub command: Option<String>,
+}
+
+impl Default for Step {
+    fn default() -> Self {
+        Self {
+            active: true,
+            script: String::new(),
+            command: None,
+        }
+    }
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct Pattern {
+    pub steps: Vec<Step>,
+    pub length: usize,
+    #[serde(default)]
+    pub speed: PatternSpeed,
+    #[serde(default)]
+    pub name: Option<String>,
+}
+
+impl Default for Pattern {
+    fn default() -> Self {
+        Self {
+            steps: (0..MAX_STEPS).map(|_| Step::default()).collect(),
+            length: DEFAULT_LENGTH,
+            speed: PatternSpeed::default(),
+            name: None,
+        }
+    }
+}
+
+impl Pattern {
+    pub fn step(&self, index: usize) -> Option<&Step> {
+        self.steps.get(index)
+    }
+
+    pub fn step_mut(&mut self, index: usize) -> Option<&mut Step> {
+        self.steps.get_mut(index)
+    }
+
+    pub fn set_length(&mut self, length: usize) {
+        let length = length.clamp(2, MAX_STEPS);
+        while self.steps.len() < length {
+            self.steps.push(Step::default());
+        }
+        self.length = length;
+    }
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct Bank {
+    pub patterns: Vec<Pattern>,
+    #[serde(default)]
+    pub name: Option<String>,
+}
+
+impl Default for Bank {
+    fn default() -> Self {
+        Self {
+            patterns: (0..MAX_PATTERNS).map(|_| Pattern::default()).collect(),
+            name: None,
+        }
+    }
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct Project {
+    pub banks: Vec<Bank>,
+}
+
+impl Default for Project {
+    fn default() -> Self {
+        Self {
+            banks: (0..MAX_BANKS).map(|_| Bank::default()).collect(),
+        }
+    }
+}
+
+impl Project {
+    pub fn pattern_at(&self, bank: usize, pattern: usize) -> &Pattern {
+        &self.banks[bank].patterns[pattern]
+    }
+
+    pub fn pattern_at_mut(&mut self, bank: usize, pattern: usize) -> &mut Pattern {
+        &mut self.banks[bank].patterns[pattern]
+    }
+}