refactor split off application state file

src/state/mod.rs

@@ -0,0 +1,45 @@
+use serde::{Serialize, Deserialize};
+
+use crate::constants::NONE_STRING_OPTION;
+
+    #[derive(Debug, Clone, Serialize, Deserialize)]
+    pub struct AnnotationZStack {
+        pub images: Vec<AnnotationImage>,
+        pub best_index: Option<usize>,
+    }
+
+    impl AnnotationZStack {
+        pub fn new() -> Self {
+            AnnotationZStack {
+                images: Vec::<AnnotationImage>::new(),
+                best_index: None,
+            }
+        }
+        pub fn push(&mut self, image: AnnotationImage) -> &mut Self {
+            self.images.push(image);
+            self
+        }
+        pub fn first(self) -> Option<AnnotationImage> {
+            self.images.first().map(|x| x.clone())
+        }
+    }
+
+    #[derive(Debug, Clone, Serialize, Deserialize)]
+    pub struct AnnotationImage {
+        pub image_path: String,
+        pub neighbours: [Option<String>; 8],
+    }
+
+    impl AnnotationImage {
+        pub fn from_vec(image_path: String, neighbours: Vec<Option<String>>) -> Self {
+            let mut _neighbours = [NONE_STRING_OPTION; 8];
+            for (index, element) in (0..8).zip(neighbours.iter()) {
+                _neighbours[index] = element.clone();
+            }
+
+            AnnotationImage {
+                image_path,
+                neighbours: _neighbours,
+            }
+        }
+    }