"use strict";

const {strict: assert} = require("assert");

const {set_global, zrequire} = require("./lib/namespace");
const {run_test} = require("./lib/test");

const muted_users = zrequire("muted_users");
const typing_data = zrequire("typing_data");

function test(label, f) {
    run_test(label, ({override}) => {
        typing_data.clear_for_testing();
        muted_users.set_muted_users([]);
        f({override});
    });
}

test("basics", () => {
    // The typing_data needs to be robust with lists of
    // user ids being in arbitrary sorting order. So all
    // the apparent randomness in these tests has a purpose.
    typing_data.add_typist([5, 10, 15], 15);
    assert.deepEqual(typing_data.get_group_typists([15, 10, 5]), [15]);

    // test that you can add twice
    typing_data.add_typist([5, 10, 15], 15);

    // add another id to our first group
    typing_data.add_typist([5, 10, 15], 10);
    assert.deepEqual(typing_data.get_group_typists([10, 15, 5]), [10, 15]);

    // start adding to a new group
    typing_data.add_typist([7, 15], 7);
    typing_data.add_typist([7, 15], 15);

    // test get_all_typists
    assert.deepEqual(typing_data.get_all_typists(), [7, 10, 15]);

    // test basic removal
    assert.ok(typing_data.remove_typist([15, 7], 7));
    assert.deepEqual(typing_data.get_group_typists([7, 15]), [15]);

    // test removing an id that is not there
    assert.ok(!typing_data.remove_typist([15, 7], 7));
    assert.deepEqual(typing_data.get_group_typists([7, 15]), [15]);
    assert.deepEqual(typing_data.get_all_typists(), [10, 15]);

    // remove user from one group, but "15" will still be among
    // "all typists"
    assert.ok(typing_data.remove_typist([15, 7], 15));
    assert.deepEqual(typing_data.get_all_typists(), [10, 15]);

    // now remove from the other group
    assert.ok(typing_data.remove_typist([5, 15, 10], 15));
    assert.deepEqual(typing_data.get_all_typists(), [10]);

    // test duplicate ids in a groups
    typing_data.add_typist([20, 40, 20], 20);
    assert.deepEqual(typing_data.get_group_typists([20, 40]), [20]);
});

test("muted_typists_excluded", () => {
    typing_data.add_typist([5, 10, 15], 5);
    typing_data.add_typist([5, 10, 15], 10);

    // Nobody is muted.
    assert.deepEqual(typing_data.get_group_typists([5, 10, 15]), [5, 10]);
    assert.deepEqual(typing_data.get_all_typists(), [5, 10]);

    // Mute a user, and test that the get_* functions exclude that user.
    muted_users.add_muted_user(10);
    assert.deepEqual(typing_data.get_group_typists([5, 10, 15]), [5]);
    assert.deepEqual(typing_data.get_all_typists(), [5]);
});

test("timers", () => {
    const events = {};

    const stub_timer_id = "timer_id_stub";
    const stub_group = [5, 10, 15];
    const stub_delay = 99;
    const stub_f = "function";

    function set_timeout(f, delay) {
        assert.equal(delay, stub_delay);
        events.f = f;
        events.timer_set = true;
        return stub_timer_id;
    }

    function clear_timeout(timer) {
        assert.equal(timer, stub_timer_id);
        events.timer_cleared = true;
    }

    function reset_events() {
        events.f = undefined;
        events.timer_cleared = false;
        events.timer_set = false;
    }

    function kickstart() {
        reset_events();
        typing_data.kickstart_inbound_timer(stub_group, stub_delay, stub_f);
    }

    function clear() {
        reset_events();
        typing_data.clear_inbound_timer(stub_group);
    }

    set_global("setTimeout", set_timeout);
    set_global("clearTimeout", clear_timeout);

    // first time, we set
    kickstart();
    assert.deepEqual(events, {
        f: stub_f,
        timer_cleared: false,
        timer_set: true,
    });

    // second time we clear and set
    kickstart();
    assert.deepEqual(events, {
        f: stub_f,
        timer_cleared: true,
        timer_set: true,
    });

    // first time clearing, we clear
    clear();
    assert.deepEqual(events, {
        f: undefined,
        timer_cleared: true,
        timer_set: false,
    });

    // second time clearing, we noop
    clear();
    assert.deepEqual(events, {
        f: undefined,
        timer_cleared: false,
        timer_set: false,
    });
});