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|
use imap_codec::imap_types::command::{FetchModifier, SelectExamineModifier, StoreModifier};
use imap_codec::imap_types::core::NonEmptyVec;
use imap_codec::imap_types::extensions::enable::{CapabilityEnable, Utf8Kind};
use imap_codec::imap_types::response::Capability;
use std::collections::HashSet;
use crate::imap::attributes::AttributesProxy;
fn capability_unselect() -> Capability<'static> {
Capability::try_from("UNSELECT").unwrap()
}
fn capability_condstore() -> Capability<'static> {
Capability::try_from("CONDSTORE").unwrap()
}
fn capability_uidplus() -> Capability<'static> {
Capability::try_from("UIDPLUS").unwrap()
}
fn capability_liststatus() -> Capability<'static> {
Capability::try_from("LIST-STATUS").unwrap()
}
/*
fn capability_qresync() -> Capability<'static> {
Capability::try_from("QRESYNC").unwrap()
}
*/
#[derive(Debug, Clone)]
pub struct ServerCapability(HashSet<Capability<'static>>);
impl Default for ServerCapability {
fn default() -> Self {
Self(HashSet::from([
Capability::Imap4Rev1,
Capability::Enable,
Capability::Move,
Capability::LiteralPlus,
Capability::Idle,
capability_unselect(),
capability_condstore(),
capability_uidplus(),
capability_liststatus(),
//capability_qresync(),
]))
}
}
impl ServerCapability {
pub fn to_vec(&self) -> NonEmptyVec<Capability<'static>> {
self.0
.iter()
.map(|v| v.clone())
.collect::<Vec<_>>()
.try_into()
.unwrap()
}
#[allow(dead_code)]
pub fn support(&self, cap: &Capability<'static>) -> bool {
self.0.contains(cap)
}
}
#[derive(Clone)]
pub enum ClientStatus {
NotSupportedByServer,
Disabled,
Enabled,
}
impl ClientStatus {
pub fn is_enabled(&self) -> bool {
matches!(self, Self::Enabled)
}
pub fn enable(&self) -> Self {
match self {
Self::Disabled => Self::Enabled,
other => other.clone(),
}
}
}
pub struct ClientCapability {
pub condstore: ClientStatus,
pub utf8kind: Option<Utf8Kind>,
}
impl ClientCapability {
pub fn new(sc: &ServerCapability) -> Self {
Self {
condstore: match sc.0.contains(&capability_condstore()) {
true => ClientStatus::Disabled,
_ => ClientStatus::NotSupportedByServer,
},
utf8kind: None,
}
}
pub fn enable_condstore(&mut self) {
self.condstore = self.condstore.enable();
}
pub fn attributes_enable(&mut self, ap: &AttributesProxy) {
if ap.is_enabling_condstore() {
self.enable_condstore()
}
}
pub fn fetch_modifiers_enable(&mut self, mods: &[FetchModifier]) {
if mods
.iter()
.any(|x| matches!(x, FetchModifier::ChangedSince(..)))
{
self.enable_condstore()
}
}
pub fn store_modifiers_enable(&mut self, mods: &[StoreModifier]) {
if mods
.iter()
.any(|x| matches!(x, StoreModifier::UnchangedSince(..)))
{
self.enable_condstore()
}
}
pub fn select_enable(&mut self, mods: &[SelectExamineModifier]) {
for m in mods.iter() {
match m {
SelectExamineModifier::Condstore => self.enable_condstore(),
}
}
}
pub fn try_enable(
&mut self,
caps: &[CapabilityEnable<'static>],
) -> Vec<CapabilityEnable<'static>> {
let mut enabled = vec![];
for cap in caps {
match cap {
CapabilityEnable::CondStore if matches!(self.condstore, ClientStatus::Disabled) => {
self.condstore = ClientStatus::Enabled;
enabled.push(cap.clone());
}
CapabilityEnable::Utf8(kind) if Some(kind) != self.utf8kind.as_ref() => {
self.utf8kind = Some(kind.clone());
enabled.push(cap.clone());
}
_ => (),
}
}
enabled
}
}
|
