use isolang::Language;
use morethantext::{Action, Field, Include, MoreThanText, Name, Path, TestMoreThanText};
use std::{collections::HashSet, sync::mpsc::RecvTimeoutError};
use uuid::Uuid;

fn doc_name() -> Name {
    Name::english("session")
}

fn lang_name() -> Name {
    Name::english("language")
}

#[test]
fn are_session_ids_unique() {
    let count = 10;
    let mtt = MoreThanText::new();
    let mut ids: HashSet<String> = HashSet::new();
    for _ in 0..count {
        let client = mtt.client();
        ids.insert(client.session_id());
    }
    assert_eq!(ids.len(), count, "ids = {:?}", ids);
}

#[test]
fn can_existing_sessions_be_used() {
    let mtt = MoreThanText::new();
    let client1 = mtt.client();
    let id = client1.session_id();
    drop(client1);
    let client2 = mtt.client_with_session(id.clone(), None);
    assert_eq!(client2.session_id(), id);
}

#[test]
fn does_expired_session_ids_return_new() {
    let id = Uuid::new_v4().to_string();
    let mtt = MoreThanText::new();
    let client = mtt.client_with_session(id.clone(), None);
    assert_ne!(client.session_id(), id);
}

#[test]
fn does_bad_id_string_get_new() {
    let id = "Not uuid".to_string();
    let mtt = MoreThanText::new();
    let client = mtt.client_with_session(id.clone(), None);
    assert_ne!(client.session_id(), id);
}

#[test]
fn can_new_clients_set_langauge() {
    let lang = Language::from_639_1("fr").unwrap();
    let mut test_env = TestMoreThanText::new();
    let mtt = test_env.get_morethantext();
    let path = Path::new(
        Include::All,
        Include::Just(doc_name().into()),
        Include::Just(Action::OnAddition),
    );
    test_env.register_channel(vec![path]);
    mtt.client_with_language(lang.clone());
    let result = test_env.get_trigger_records(Action::OnAddition);
    let rec = result.iter().last().unwrap();
    assert_eq!(rec.get(&lang_name()).unwrap(), lang.into());
}

#[test]
fn is_lanaguage_set_for_expired_session() {
    let lang = Language::from_639_1("fr").unwrap();
    let mut test_env = TestMoreThanText::new();
    let mtt = test_env.get_morethantext();
    let path = Path::new(
        Include::All,
        Include::Just(doc_name().into()),
        Include::Just(Action::OnAddition),
    );
    test_env.register_channel(vec![path]);
    mtt.client_with_session(Uuid::new_v4().to_string(), Some(lang));
    let result = test_env.get_trigger_records(Action::OnAddition);
    let rec = result.iter().last().unwrap();
    assert_eq!(rec.get(&lang_name()).unwrap(), lang.into());
}

#[test]
fn is_lanaguage_set_for_bad_session() {
    let lang = Language::from_639_1("de").unwrap();
    let mut test_env = TestMoreThanText::new();
    let mtt = test_env.get_morethantext();
    let path = Path::new(
        Include::All,
        Include::Just(doc_name().into()),
        Include::Just(Action::OnAddition),
    );
    test_env.register_channel(vec![path]);
    mtt.client_with_session("bad".to_string(), Some(lang));
    let result = test_env.get_trigger_records(Action::OnAddition);
    let rec = result.iter().last().unwrap();
    assert_eq!(rec.get(&lang_name()).unwrap(), lang.into());
}

#[test]
fn do_existing_sessions_keep_language_unchanged() {
    let lang1 = Language::from_639_1("de").unwrap();
    let lang2 = Language::from_639_1("fr").unwrap();
    let mut test_env = TestMoreThanText::new();
    let mtt = test_env.get_morethantext();
    let client = mtt.client_with_language(lang1);
    let id = client.session_id();
    drop(client);
    let path = Path::new(
        Include::All,
        Include::Just(doc_name().into()),
        Include::Just(Action::OnUpdate),
    );
    test_env.register_channel(vec![path]);
    mtt.client_with_session(id.clone(), Some(lang2));
    let result = test_env.get_trigger_records(Action::OnUpdate);
    let rec = result.iter().last().unwrap();
    assert_eq!(rec.get(&lang_name()).unwrap(), lang1.into());
}