refactor template with clap derive api

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

@@ -0,0 +1,48 @@
+use anyhow::Result;
+use clap::Parser;
+use email::message::Message;
+use log::info;
+
+use crate::{
+    account::arg::name::AccountNameFlag,
+    cache::arg::disable::DisableCacheFlag,
+    config::TomlConfig,
+    message::arg::{body::BodyRawArg, header::HeaderRawArgs},
+    printer::Printer,
+};
+
+/// Write a new template
+#[derive(Debug, Parser)]
+pub struct TemplateWriteCommand {
+    #[command(flatten)]
+    pub headers: HeaderRawArgs,
+
+    #[command(flatten)]
+    pub body: BodyRawArg,
+
+    #[command(flatten)]
+    pub cache: DisableCacheFlag,
+
+    #[command(flatten)]
+    pub account: AccountNameFlag,
+}
+
+impl TemplateWriteCommand {
+    pub async fn execute(self, printer: &mut impl Printer, config: &TomlConfig) -> Result<()> {
+        info!("executing template write command");
+
+        let account = self.account.name.as_ref().map(String::as_str);
+        let cache = self.cache.disable;
+
+        let (_, account_config) = config.clone().into_account_configs(account, cache)?;
+
+        let tpl: String = Message::new_tpl_builder(&account_config)
+            .with_headers(self.headers.raw)
+            .with_body(self.body.raw())
+            .build()
+            .await?
+            .into();
+
+        printer.print(tpl)
+    }
+}