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use anyhow::{Result, Error};
use boitalettres::proto::Response;
use imap_codec::types::command::CommandBody;
use imap_codec::types::core::AString;
use imap_codec::types::response::{Capability, Data, Response as ImapRes, Status};
use crate::imap::flow;
use crate::imap::session::InnerContext;
//--- dispatching
pub async fn dispatch<'a>(ctx: InnerContext<'a>) -> Result<(Response, flow::Transition)> {
match &ctx.req.body {
CommandBody::Capability => capability(ctx).await,
CommandBody::Login { username, password } => login(ctx, username.clone(), password.clone()).await,
_ => Status::no(Some(ctx.req.tag.clone()), None, "This command is not available in the ANONYMOUS state.")
.map(|s| (vec![ImapRes::Status(s)], flow::Transition::No))
.map_err(Error::msg),
}
}
//--- Command controllers, private
async fn capability<'a>(ctx: InnerContext<'a>) -> Result<(Response, flow::Transition)> {
let capabilities = vec![Capability::Imap4Rev1, Capability::Idle];
let res = vec![
ImapRes::Data(Data::Capability(capabilities)),
ImapRes::Status(
Status::ok(Some(ctx.req.tag.clone()), None, "Server capabilities")
.map_err(Error::msg)?,
),
];
Ok((res, flow::Transition::No))
}
async fn login<'a>(ctx: InnerContext<'a>, username: AString, password: AString) -> Result<(Response, flow::Transition)> {
let (u, p) = (String::try_from(username)?, String::try_from(password)?);
tracing::info!(user = %u, "command.login");
let creds = match ctx.login.login(&u, &p).await {
Err(e) => {
tracing::debug!(error=%e, "authentication failed");
return Ok((vec![ImapRes::Status(
Status::no(Some(ctx.req.tag.clone()), None, "Authentication failed")
.map_err(Error::msg)?,
)], flow::Transition::No));
}
Ok(c) => c,
};
let user = flow::User {
creds,
name: u.clone(),
};
let tr = flow::Transition::Authenticate(user);
tracing::info!(username=%u, "connected");
Ok((vec![
//@FIXME we could send a capability status here too
ImapRes::Status(
Status::ok(Some(ctx.req.tag.clone()), None, "completed").map_err(Error::msg)?,
),
], tr))
}
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