refactor: apply rust api guidelines

.gitignore

@@ -1 +1,2 @@
 /target
+.local

Cargo.toml

@@ -5,7 +5,6 @@ edition = "2024"
 authors = ["Thiago Ramos"]
 description = "A flexible and efficient library for managing 2D grid-based layouts with automatic collision handling and dynamic vertical expansion"
 documentation = "https://docs.rs/grid-engine"
-homepage = "https://github.com/thiagodejesus/grid-engine"
 repository = "https://github.com/thiagodejesus/grid-engine"
 readme = "README.md"
 keywords = ["grid", "layout", "collision", "2d", "dashboard"]

examples/managing_grid.rs

@@ -55,7 +55,7 @@ fn main() {
 
     let mut grid = GridEngine::new(10, 12);
 
-    grid.events.add_changes_listener(Box::new(|event| {
+    grid.events_mut().add_changes_listener(Box::new(|event| {
         println!("Event triggered: {:#?}", event);
     }));
 

src/grid_engine.rs

@@ -30,17 +30,22 @@
 //!
 //! ```
 //! use grid_engine::grid_engine::GridEngine;
+//! # use std::error::Error;
 //!
+//! # fn main() -> Result<(), Box<dyn Error>> {
 //! let mut grid = GridEngine::new(10, 12);
 //!
 //! // Add items to the grid
-//! grid.add_item("item1".to_string(), 2, 2, 2, 4).unwrap();
+//! grid.add_item("item1".to_string(), 2, 2, 2, 4)?;
 //!
 //! // Move items (handles collisions automatically)
-//! grid.move_item("item1", 4, 4).unwrap();
+//! grid.move_item("item1", 4, 4)?;
 //!
 //! // Remove items
-//! grid.remove_item("item1").unwrap();
+//! grid.remove_item("item1")?;
+//! #
+//! # Ok(())
+//! # }
 //! ```
 
 use crate::error::{GridEngineError, InnerGridError, ItemError};
@@ -54,23 +59,92 @@ use std::{collections::BTreeMap, fmt::Debug};
 #[derive(Clone, Debug, Eq, PartialEq, Hash)]
 pub struct AddChangeData {
     /// The node being added to the grid
-    pub value: Node,
+    value: Node,
+}
+
+impl AddChangeData {
+    /// Creates a new AddChangeData instance
+    ///
+    /// # Arguments
+    ///
+    /// * `value` - The node being added to the grid
+    ///
+    /// # Returns
+    ///
+    /// A new instance of AddChangeData
+    pub fn new(value: Node) -> Self {
+        Self { value }
+    }
+
+    /// Returns the node being added
+    pub fn value(&self) -> &Node {
+        &self.value
+    }
 }
 
 /// Represents data for an item removal change
 #[derive(Clone, Debug, Eq, PartialEq, Hash)]
 pub struct RemoveChangeData {
     /// The node being removed from the grid
-    pub value: Node,
+    value: Node,
+}
+
+impl RemoveChangeData {
+    /// Creates a new RemoveChangeData instance
+    ///
+    /// # Arguments
+    ///
+    /// * `value` - The node being removed from the grid
+    ///
+    /// # Returns
+    ///
+    /// A new instance of RemoveChangeData
+    pub fn new(value: Node) -> Self {
+        Self { value }
+    }
+
+    /// Returns the node being removed
+    pub fn value(&self) -> &Node {
+        &self.value
+    }
 }
 
 /// Represents data for an item movement change
 #[derive(Clone, Debug, Eq, PartialEq, Hash)]
 pub struct MoveChangeData {
     /// The original state of the node
-    pub old_value: Node,
+    old_value: Node,
     /// The new state of the node after movement
-    pub new_value: Node,
+    new_value: Node,
+}
+
+impl MoveChangeData {
+    /// Creates a new MoveChangeData instance
+    ///
+    /// # Arguments
+    ///
+    /// * `old_value` - The original state of the node
+    /// * `new_value` - The new state of the node after movement
+    ///
+    /// # Returns
+    ///
+    /// A new instance of MoveChangeData
+    pub fn new(old_value: Node, new_value: Node) -> Self {
+        Self {
+            old_value,
+            new_value,
+        }
+    }
+
+    /// Returns the original state of the node
+    pub fn old_value(&self) -> &Node {
+        &self.old_value
+    }
+
+    /// Returns the new state of the node after movement
+    pub fn new_value(&self) -> &Node {
+        &self.new_value
+    }
 }
 
 /// Represents different types of changes that can occur in the grid
@@ -104,7 +178,7 @@ pub struct GridEngine {
     /// Changes waiting to be applied
     pending_changes: Vec<Change>,
     /// Event system for tracking grid changes
-    pub events: GridEvents,
+    events: GridEvents,
 }
 
 impl GridEngine {
@@ -131,16 +205,36 @@ impl GridEngine {
         }
     }
 
+    /// Creates a new node with the specified parameters.
     fn new_node(&mut self, id: String, x: usize, y: usize, w: usize, h: usize) -> Node {
         Node::new(id, x, y, w, h)
     }
 
+    /// Creates a change operation to add a new node to the grid.
     fn create_add_change(&mut self, node: Node) {
         self.pending_changes
             .push(Change::Add(AddChangeData { value: node }));
     }
 
     /// Get the nodes sorted by id
+    ///
+    /// # Example
+    ///
+    /// ```
+    /// use grid_engine::grid_engine::GridEngine;
+    ///
+    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// let mut grid = GridEngine::new(10, 10);
+    /// grid.add_item("b".to_string(), 0, 0, 2, 2).unwrap();
+    /// grid.add_item("a".to_string(), 0, 2, 2, 2).unwrap();
+    ///
+    /// let nodes = grid.get_nodes();
+    /// assert_eq!(nodes.len(), 2);
+    /// assert_eq!(nodes[0].id(), "a");
+    /// assert_eq!(nodes[1].id(), "b");
+    /// # Ok(())
+    /// # }
+    /// ```
     pub fn get_nodes(&self) -> Vec<Node> {
         let mut cloned: Vec<Node> = self.items.values().cloned().collect();
         // Would be better to sort by some created_at
@@ -157,6 +251,20 @@ impl GridEngine {
     /// # Returns
     ///
     /// A reference to the InnerGrid instance
+    ///
+    /// # Example
+    ///
+    /// ```
+    /// use grid_engine::grid_engine::GridEngine;
+    /// use std::error::Error;
+    ///
+    /// # fn main() -> Result<(), Box<dyn Error>> {
+    /// let grid = GridEngine::new(10, 10);
+    /// let inner_grid = grid.get_inner_grid();
+    /// assert_eq!(inner_grid.rows(), 10);
+    /// assert_eq!(inner_grid.cols(), 10);
+    /// # Ok(())
+    /// # }
     pub fn get_inner_grid(&self) -> &InnerGrid {
         &self.grid
     }
@@ -183,9 +291,19 @@ impl GridEngine {
     ///
     /// ```
     /// use grid_engine::grid_engine::GridEngine;
+    /// use std::error::Error;
     ///
+    /// # fn main() -> Result<(), Box<dyn Error>> {
     /// let mut grid = GridEngine::new(10, 10);
-    /// grid.add_item("box1".to_string(), 0, 0, 2, 2).unwrap(); // 2x2 item at top-left
+    /// grid.add_item("box1".to_string(), 0, 0, 2, 2)?; // 2x2 item at top-left
+    ///
+    /// // Check if the item was added correctly
+    /// let item = grid.get_nodes();
+    /// assert_eq!(item.len(), 1);
+    /// assert_eq!(item[0].id(), "box1");
+    ///
+    /// # Ok(())
+    /// # }
     /// ```
     pub fn add_item(
         &mut self,
@@ -239,10 +357,16 @@ impl GridEngine {
     ///
     /// ```
     /// use grid_engine::grid_engine::GridEngine;
+    /// use std::error::Error;
+    ///
+    /// # fn main() -> Result<(), Box<dyn Error>> {
     ///
     /// let mut grid = GridEngine::new(10, 10);
-    /// grid.add_item("box1".to_string(), 0, 0, 2, 2).unwrap();
-    /// grid.remove_item("box1").unwrap(); // Removes the item
+    /// grid.add_item("box1".to_string(), 0, 0, 2, 2)?;
+    /// grid.remove_item("box1")?; // Removes the item
+    ///
+    /// # Ok(())
+    /// # }
     /// ```
     pub fn remove_item(&mut self, id: &str) -> Result<Node, GridEngineError> {
         let node = match self.items.get(id) {
@@ -409,10 +533,23 @@ impl GridEngine {
     ///
     /// ```
     /// use grid_engine::grid_engine::GridEngine;
+    /// # use std::error::Error;
+    ///
+    /// # fn main() -> Result<(), Box<dyn Error>> {
     ///
     /// let mut grid = GridEngine::new(10, 10);
-    /// grid.add_item("box1".to_string(), 0, 0, 2, 2).unwrap();
-    /// grid.move_item("box1", 2, 2).unwrap(); // Moves box to position 2,2
+    /// grid.add_item("box1".to_string(), 0, 0, 2, 2)?;
+    /// grid.move_item("box1", 2, 2)?; // Moves box to position 2,2
+    ///
+    /// // Check if the item was moved correctly
+    /// let item = grid.get_nodes();
+    /// assert_eq!(item.len(), 1);
+    /// assert_eq!(item[0].x(), &2);
+    /// assert_eq!(item[0].y(), &2);
+    ///
+    /// # Ok(())
+    /// # }
+    ///
     /// ```
     pub fn move_item(
         &mut self,
@@ -483,11 +620,20 @@ impl GridEngine {
             }
         }
 
-        self.events.trigger_changes_event(&ChangesEventValue {
-            changes: changes.to_vec(),
-        });
+        self.events
+            .trigger_changes_event(&ChangesEventValue::new(changes.to_vec()));
         Ok(())
     }
+
+    /// Returns a reference to the grid events system.
+    pub fn events(&self) -> &GridEvents {
+        &self.events
+    }
+
+    /// Returns a mutable reference to the grid events system.
+    pub fn events_mut(&mut self) -> &mut GridEvents {
+        &mut self.events
+    }
 }
 
 mod tests {