Switch to varlink as IPC protocol

This is a lot! Whole new design on top of a statefult varlink interface.

You can now handle multiple request response cycles over a single
connection.

The error responses are lot more refined than just status codes with
optional messages and finally part of the protocol.

TODO: A lot of error handling needs to be improved.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/cmd/stats.rs b/src/cmd/stats.rs
new file mode 100644
index 0000000..e8e8325
--- /dev/null
+++ b/src/cmd/stats.rs
@@ -0,0 +1,25 @@
+use crate::cmd::{open_submaildir, MailStorage};
+use crate::de_jmhoffmann_jwebmail_mailstorage::Call_Stats;
+
+pub fn stats(ms: &MailStorage, call: &mut dyn Call_Stats, folder: String) -> varlink::Result<()> {
+    if let Some(maildir_path) = ms.maildir_path.read().unwrap().clone() {
+        let maildir = open_submaildir(maildir_path, &folder);
+
+        let mail_count = maildir.count_cur() as i64;
+        let unread_count = maildir
+            .list_cur()
+            .filter(|x| x.as_ref().map_or(false, |z| !z.is_seen()))
+            .count() as i64;
+        let byte_size: u64 = maildir
+            .path()
+            .join("cur")
+            .read_dir()
+            .map_err(varlink::map_context!())?
+            .map(|x| x.map_or(0, |z| z.metadata().map_or(0, |y| y.len())))
+            .sum();
+
+        call.reply(mail_count, unread_count, byte_size as i64)
+    } else {
+        call.reply_not_initialized()
+    }
+}