refactor: make message add return added id

Refs: #627

src/config.rs

@@ -35,8 +35,12 @@ use serde::{Deserialize, Serialize};
 /// Global configuration.
 ///
 /// Represents the whole TOML user's configuration file.
+/// `deny_unknown_fields` is intentionally omitted so the same TOML
+/// file can be shared with `himalaya-tui`: top-level TUI-only fields
+/// (`display-name`, `signature`, `signature-delim`) are silently
+/// ignored here.
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
-#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+#[serde(rename_all = "kebab-case")]
 pub struct Config {
     pub downloads_dir: Option<PathBuf>,
     #[serde(default)]
@@ -98,8 +102,12 @@ impl Config {
 }
 
 /// Account configuration.
+///
+/// `deny_unknown_fields` is omitted so per-account TUI-only fields
+/// (`email`, `display-name`, `signature`, `signature-delim`) coexist
+/// in the same `[accounts.<name>]` block when the file is shared.
 #[derive(Clone, Debug, Deserialize, Serialize)]
-#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+#[serde(rename_all = "kebab-case")]
 pub struct AccountConfig {
     #[serde(default)]
     pub default: bool,

src/shared/messages/add.rs

@@ -16,6 +16,7 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 use std::{
+    fmt,
     io::{IsTerminal, Read, stdin},
     path::PathBuf,
 };
@@ -23,8 +24,8 @@ use std::{
 use anyhow::{Result, bail};
 use clap::Parser;
 use io_email::flag::Flag;
-use pimalaya_cli::printer::Message;
 use pimalaya_cli::printer::Printer;
+use serde::Serialize;
 
 use crate::shared::{client::EmailClient, flags::arg::FlagArg};
 
@@ -55,8 +56,19 @@ impl MessageAddCommand {
     pub fn execute(self, printer: &mut impl Printer, mut client: EmailClient) -> Result<()> {
         let raw = read_raw(&self.file)?;
         let flags: Vec<Flag> = self.flag.iter().map(Into::into).collect();
-        client.add_message(&self.mailbox, &flags, raw)?;
-        printer.out(Message::new("Message successfully added"))
+        let id = client.add_message(&self.mailbox, &flags, raw)?;
+        printer.out(MessageAddOutput { id })
+    }
+}
+
+#[derive(Serialize)]
+struct MessageAddOutput {
+    id: String,
+}
+
+impl fmt::Display for MessageAddOutput {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "Message {} successfully added", self.id)
     }
 }