1 files changed, 62 insertions, 0 deletions
diff --git a/cli/src/store.rs b/cli/src/store.rs
new file mode 100644
index 0000000..2bba9c8
--- /dev/null
+++ b/cli/src/store.rs
@@ -0,0 +1,62 @@
+use std::path::{Path, PathBuf};
+
+use crate::transaction::{Category, Transaction};
+
+#[derive(Debug)]
+pub struct Store {
+    root: PathBuf,
+    transactions: Vec<Transaction>,
+    new_transactions: Vec<Transaction>,
+}
+
+impl Store {
+    //TODO Result
+    pub fn open(root: PathBuf) -> Option<Self> {
+        Some(Self {
+            transactions: Self::open_dir(&root)?,
+            new_transactions: Vec::new(),
+            root,
+        })
+    }
+
+    //TODO check if hash matches
+    //TODO Result
+    //TODO overkill? maybe we can use subfolders later on
+    fn open_dir(dir: &Path) -> Option<Vec<Transaction>> {
+        let mut res = Vec::new();
+        for entry in std::fs::read_dir(dir).ok()? {
+            let entry = entry.ok()?;
+            if entry.file_type().ok()?.is_dir() {
+                let mut transactions = Self::open_dir(&entry.path())?;
+                res.append(&mut transactions);
+            } else {
+                res.push(Transaction::open(&entry.path())?);
+            }
+        }
+        Some(res)
+    }
+
+    pub fn push(&mut self, transaction: Transaction) {
+        self.new_transactions.push(transaction);
+    }
+
+    pub fn write(&self) -> std::io::Result<()> {
+        for transaction in &self.new_transactions {
+            let mut path = self.root.clone();
+            path.push(format!("{}", transaction.id()));
+            transaction.write(&path)?;
+        }
+        Ok(())
+    }
+
+    pub fn categories(&self) -> Vec<Category> {
+        let mut categories: Vec<_> = self
+            .transactions
+            .iter()
+            .map(|t| t.category.clone())
+            .collect();
+        categories.sort();
+        categories.dedup();
+        categories
+    }
+}