97 lines
2.7 KiB
Rust
97 lines
2.7 KiB
Rust
#![warn(clippy::too_many_arguments)]
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use lettre_email::Email;
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use std::env;
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pub use self::mailer::*;
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#[cfg(feature = "debug-mailer")]
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mod mailer {
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use lettre::{SendableEmail, Transport};
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use std::io::Read;
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pub struct DebugTransport;
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impl<'a> Transport<'a> for DebugTransport {
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type Result = Result<(), ()>;
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fn send(&mut self, email: SendableEmail) -> Self::Result {
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println!(
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"{}: from=<{}> to=<{:?}>\n{:#?}",
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email.message_id().to_string(),
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email
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.envelope()
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.from()
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.map(ToString::to_string)
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.unwrap_or_default(),
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email.envelope().to().to_vec(),
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{
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let mut message = String::new();
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email
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.message()
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.read_to_string(&mut message)
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.map_err(|_| ())?;
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message
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},
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);
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Ok(())
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}
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}
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pub type Mailer = Option<DebugTransport>;
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pub fn init() -> Mailer {
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Some(DebugTransport)
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}
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}
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#[cfg(not(feature = "debug-mailer"))]
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mod mailer {
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use lettre::{
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smtp::{
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authentication::{Credentials, Mechanism},
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extension::ClientId,
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ConnectionReuseParameters,
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},
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SmtpClient, SmtpTransport,
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};
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use std::env;
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pub type Mailer = Option<SmtpTransport>;
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pub fn init() -> Mailer {
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let server = env::var("MAIL_SERVER").ok()?;
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let helo_name = env::var("MAIL_HELO_NAME").unwrap_or_else(|_| "localhost".to_owned());
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let username = env::var("MAIL_USER").ok()?;
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let password = env::var("MAIL_PASSWORD").ok()?;
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let mail = SmtpClient::new_simple(&server)
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.unwrap()
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.hello_name(ClientId::Domain(helo_name))
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.credentials(Credentials::new(username, password))
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.smtp_utf8(true)
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.authentication_mechanism(Mechanism::Plain)
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.connection_reuse(ConnectionReuseParameters::NoReuse)
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.transport();
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Some(mail)
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}
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}
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pub fn build_mail(dest: String, subject: String, body: String) -> Option<Email> {
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Email::builder()
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.from(
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env::var("MAIL_ADDRESS")
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.or_else(|_| {
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Ok(format!(
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"{}@{}",
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env::var("MAIL_USER")?,
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env::var("MAIL_SERVER")?
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)) as Result<_, env::VarError>
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})
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.expect("Mail server is not correctly configured"),
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)
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.to(dest)
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.subject(subject)
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.text(body)
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.build()
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.ok()
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}
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