feat: add initial session name to layout template (#789)

* feat: add session configuration to layout template

WIP: prototyping for issue #611

* test(layout): add session name

* feat(layout): add cond flow to check session name

* feat(layout): update session

* feat: add function to attach a session

* fix(layout): update feedback

* attach option only works when layout template exists.

* feat(layout): add conditional for session-layout

* update default attach value

1 files changed, 17 insertions, 0 deletions

diff --git a/zellij-utils/src/input/layout.rs b/zellij-utils/src/input/layout.rs
index 2bbc8cb48..df976b8e1 100644
--- a/zellij-utils/src/input/layout.rs
+++ b/zellij-utils/src/input/layout.rs
@@ -144,6 +144,8 @@ pub struct Layout {
 #[serde(default)]
 pub struct LayoutFromYaml {
     #[serde(default)]
+    pub session: SessionFromYaml,
+    #[serde(default)]
     pub template: LayoutTemplate,
     #[serde(default)]
     pub borderless: bool,
@@ -245,6 +247,20 @@ impl LayoutFromYaml {
     }
 }
 
+// The struct that is used to deserialize the session from
+// a yaml configuration file
+#[derive(Debug, Default, Serialize, Deserialize, Clone, PartialEq)]
+#[serde(crate = "self::serde")]
+pub struct SessionFromYaml {
+    pub name: Option<String>,
+    #[serde(default = "default_as_some_true")]
+    pub attach: Option<bool>,
+}
+
+fn default_as_some_true() -> Option<bool> {
+    Some(true)
+}
+
 // The struct that carries the information template that is used to
 // construct the layout
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
@@ -591,6 +607,7 @@ impl Default for LayoutTemplate {
 impl Default for LayoutFromYaml {
     fn default() -> Self {
         Self {
+            session: SessionFromYaml::default(),
             template: LayoutTemplate::default(),
             borderless: false,
             tabs: vec![],