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, 26 insertions, 0 deletions

diff --git a/src/cmd/show.rs b/src/cmd/show.rs
new file mode 100644
index 0000000..442eb21
--- /dev/null
+++ b/src/cmd/show.rs
@@ -0,0 +1,26 @@
+use crate::cmd::{open_submaildir, MailStorage};
+use crate::de_jmhoffmann_jwebmail_mailstorage::Call_Show;
+use crate::rfc822::parsed_mail_to_mail;
+
+pub fn show(
+    ms: &MailStorage,
+    call: &mut dyn Call_Show,
+    folder: String,
+    mid: String,
+) -> varlink::Result<()> {
+    if let Some(path) = ms.maildir_path.read().unwrap().clone() {
+        let md = open_submaildir(path, &folder);
+
+        md.add_flags(&mid, "S").map_err(varlink::map_context!())?;
+
+        if let Some(mut mail) = md.find(&mid) {
+            let mail2 = parsed_mail_to_mail(mail.parsed().unwrap()).unwrap();
+
+            call.reply(mail2)
+        } else {
+            call.reply_invalid_mid(folder, mid)
+        }
+    } else {
+        call.reply_not_initialized()
+    }
+}