use axum::extract::{Json, Path, State};

use crate::{
    empty::Empty,
    invite::app::AcceptError,
    name::Name,
    test::{fixtures, verify},
};

#[tokio::test]
async fn valid_invite() {
    // Set up the environment

    let app = fixtures::scratch_app().await;
    let issuer = fixtures::user::create(&app, &fixtures::now()).await;
    let invite = fixtures::invite::issue(&app, &issuer, &fixtures::now()).await;

    // Call the endpoint

    let (name, password) = fixtures::user::propose();
    let identity = fixtures::cookie::not_logged_in();
    let request = super::Request {
        name: name.clone(),
        password: password.clone(),
    };
    let (identity, Empty) = super::handler(
        State(app.clone()),
        fixtures::now(),
        identity,
        Path(invite.id),
        Json(request),
    )
    .await
    .expect("accepting a valid invite succeeds");

    // Verify the response

    assert!(identity.secret().is_some());

    // Verify that the issued token is valid

    verify::identity::valid_for_name(&app, &identity, &name).await;

    // Verify that the given credentials can log in

    let secret = app
        .tokens()
        .login(&name, &password, &fixtures::now())
        .await
        .expect("credentials given on signup are valid");
    verify::token::valid_for_name(&app, &secret, &name).await;
}

#[tokio::test]
async fn nonexistent_invite() {
    // Set up the environment

    let app = fixtures::scratch_app().await;
    let invite = fixtures::invite::fictitious();

    // Call the endpoint

    let (name, password) = fixtures::user::propose();
    let identity = fixtures::cookie::not_logged_in();
    let request = super::Request {
        name: name.clone(),
        password: password.clone(),
    };
    let super::Error(error) = super::handler(
        State(app.clone()),
        fixtures::now(),
        identity,
        Path(invite.clone()),
        Json(request),
    )
    .await
    .expect_err("accepting a nonexistent invite fails");

    // Verify the response

    assert!(matches!(error, AcceptError::NotFound(error_id) if error_id == invite));
}

#[tokio::test]
async fn expired_invite() {
    // Set up the environment

    let app = fixtures::scratch_app().await;
    let issuer = fixtures::user::create(&app, &fixtures::ancient()).await;
    let invite = fixtures::invite::issue(&app, &issuer, &fixtures::ancient()).await;

    app.invites()
        .expire(&fixtures::now())
        .await
        .expect("expiring invites never fails");

    // Call the endpoint

    let (name, password) = fixtures::user::propose();
    let identity = fixtures::cookie::not_logged_in();
    let request = super::Request {
        name: name.clone(),
        password: password.clone(),
    };
    let super::Error(error) = super::handler(
        State(app.clone()),
        fixtures::now(),
        identity,
        Path(invite.id.clone()),
        Json(request),
    )
    .await
    .expect_err("accepting a nonexistent invite fails");

    // Verify the response

    assert!(matches!(error, AcceptError::NotFound(error_id) if error_id == invite.id));
}

#[tokio::test]
async fn accepted_invite() {
    // Set up the environment

    let app = fixtures::scratch_app().await;
    let issuer = fixtures::user::create(&app, &fixtures::ancient()).await;
    let invite = fixtures::invite::issue(&app, &issuer, &fixtures::ancient()).await;

    let (name, password) = fixtures::user::propose();
    app.invites()
        .accept(&invite.id, &name, &password, &fixtures::now())
        .await
        .expect("accepting a valid invite succeeds");

    // Call the endpoint

    let (name, password) = fixtures::user::propose();
    let identity = fixtures::cookie::not_logged_in();
    let request = super::Request {
        name: name.clone(),
        password: password.clone(),
    };
    let super::Error(error) = super::handler(
        State(app.clone()),
        fixtures::now(),
        identity,
        Path(invite.id.clone()),
        Json(request),
    )
    .await
    .expect_err("accepting a nonexistent invite fails");

    // Verify the response

    assert!(matches!(error, AcceptError::NotFound(error_id) if error_id == invite.id));
}

#[tokio::test]
async fn conflicting_name() {
    // Set up the environment

    let app = fixtures::scratch_app().await;
    let issuer = fixtures::user::create(&app, &fixtures::ancient()).await;
    let invite = fixtures::invite::issue(&app, &issuer, &fixtures::ancient()).await;

    let existing_name = Name::from("rijksmuseum");
    app.users()
        .create(
            &existing_name,
            &fixtures::user::propose_password(),
            &fixtures::now(),
        )
        .await
        .expect("creating a user in an empty environment succeeds");

    // Call the endpoint

    let conflicting_name = Name::from("r\u{0133}ksmuseum");
    let password = fixtures::user::propose_password();

    let identity = fixtures::cookie::not_logged_in();
    let request = super::Request {
        name: conflicting_name.clone(),
        password: password.clone(),
    };
    let super::Error(error) = super::handler(
        State(app.clone()),
        fixtures::now(),
        identity,
        Path(invite.id.clone()),
        Json(request),
    )
    .await
    .expect_err("accepting a nonexistent invite fails");

    // Verify the response

    assert!(
        matches!(error, AcceptError::DuplicateLogin(error_name) if error_name == conflicting_name)
    );
}

#[tokio::test]
async fn invalid_name() {
    // Set up the environment

    let app = fixtures::scratch_app().await;
    let issuer = fixtures::user::create(&app, &fixtures::now()).await;
    let invite = fixtures::invite::issue(&app, &issuer, &fixtures::now()).await;

    // Call the endpoint

    let name = fixtures::user::propose_invalid_name();
    let password = fixtures::user::propose_password();
    let identity = fixtures::cookie::not_logged_in();
    let request = super::Request {
        name: name.clone(),
        password: password.clone(),
    };
    let super::Error(error) = super::handler(
        State(app.clone()),
        fixtures::now(),
        identity,
        Path(invite.id),
        Json(request),
    )
    .await
    .expect_err("using an invalid name should fail");

    // Verify the response

    assert!(matches!(error, AcceptError::InvalidName(error_name) if name == error_name));
}