refactor template with clap derive api

src/email/message/template/command/forward.rs

@@ -0,0 +1,65 @@
+use anyhow::{anyhow, Result};
+use clap::Parser;
+use log::info;
+
+use crate::{
+    account::arg::name::AccountNameFlag,
+    backend::Backend,
+    cache::arg::disable::DisableCacheFlag,
+    config::TomlConfig,
+    envelope::arg::ids::EnvelopeIdArg,
+    folder::arg::name::FolderNameArg,
+    message::arg::{body::BodyRawArg, header::HeaderRawArgs},
+    printer::Printer,
+};
+
+/// Generate a forward message template
+#[derive(Debug, Parser)]
+pub struct TemplateForwardCommand {
+    #[command(flatten)]
+    pub folder: FolderNameArg,
+
+    #[command(flatten)]
+    pub envelope: EnvelopeIdArg,
+
+    #[command(flatten)]
+    pub headers: HeaderRawArgs,
+
+    #[command(flatten)]
+    pub body: BodyRawArg,
+
+    #[command(flatten)]
+    pub cache: DisableCacheFlag,
+
+    #[command(flatten)]
+    pub account: AccountNameFlag,
+}
+
+impl TemplateForwardCommand {
+    pub async fn execute(self, printer: &mut impl Printer, config: &TomlConfig) -> Result<()> {
+        info!("executing template forward command");
+
+        let folder = &self.folder.name;
+        let account = self.account.name.as_ref().map(String::as_str);
+        let cache = self.cache.disable;
+
+        let (toml_account_config, account_config) =
+            config.clone().into_account_configs(account, cache)?;
+        let backend = Backend::new(toml_account_config, account_config.clone(), false).await?;
+
+        let id = self.envelope.id;
+        let tpl: String = backend
+            .get_messages(folder, &[id])
+            .await?
+            .first()
+            .ok_or(anyhow!("cannot find message {id}"))?
+            .to_forward_tpl_builder(&account_config)
+            .with_headers(self.headers.raw)
+            .with_body(self.body.raw())
+            .build()
+            .await?
+            .into();
+
+        printer.print(tpl)
+    }
+}