From 8a261eba202ec581a4af07690bc5b17ee36b869f Mon Sep 17 00:00:00 2001
From: Katharina Fey <kookie@spacekookie.de>
Date: Fri, 10 Jan 2020 16:37:21 +0000
Subject: Adding basic set and tree abstractions to libgitmail

---
 libgitmail/src/set.rs  | 18 ++++++++++++++++++
 libgitmail/src/tree.rs | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100644 libgitmail/src/set.rs
 create mode 100644 libgitmail/src/tree.rs

diff --git a/libgitmail/src/set.rs b/libgitmail/src/set.rs
new file mode 100644
index 0000000..2c71743
--- /dev/null
+++ b/libgitmail/src/set.rs
@@ -0,0 +1,18 @@
+//! Various functions to work with assembled patch sets
+
+use crate::Patch;
+
+/// A set of patches that can be applied to a repo
+pub struct PatchSet<'maildir> {
+  list: Vec<Patch<'maildir>>,
+}
+
+impl<'maildir> PatchSet<'maildir> {
+  /// Consumes a PatchSet with a builder on each patch in the series
+  pub fn exec<F>(self, cb: F)
+  where
+    F: Fn(Patch<'maildir>),
+  {
+    self.list.into_iter().for_each(|p| cb(p));
+  }
+}
diff --git a/libgitmail/src/tree.rs b/libgitmail/src/tree.rs
new file mode 100644
index 0000000..3e41c6f
--- /dev/null
+++ b/libgitmail/src/tree.rs
@@ -0,0 +1,42 @@
+//! Builder patterns to manipulate an unprocessed thread of patches
+
+use crate::Patch;
+
+/// Abstraction over a generic email
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum Mail<'mail> {
+  /// A git-sent email with patch information
+  Git(Patch<'mail>),
+  /// A non git-mail reply
+  Mail(String),
+}
+
+/// A tree of patches that can be filtered to yield a `PatchSet`
+pub struct PatchTree<'mail> {
+  /// The current patch
+  pub this: Mail<'mail>,
+  /// All replies to this patch mail
+  pub children: Vec<PatchTree<'mail>>,
+  /// Mark an email as selected
+  pub selected: bool,
+}
+
+impl<'mail> PatchTree<'mail> {
+  pub fn new(initial: Patch<'mail>) -> Self {
+    Self {
+      this: Mail::Git(initial),
+      children: Default::default(),
+      selected: false,
+    }
+  }
+
+  /// Select a specific mail into the tree
+  pub fn select(&mut self) {
+    self.selected = true;
+  }
+
+  /// Deselect a single mail from the tree
+  pub fn deselect(&mut self) {
+    self.selected = false;
+  }
+}
-- 
cgit v1.2.3