zrequire('unread');
zrequire('util');

zrequire('Filter', 'js/filter');
zrequire('MessageListData', 'js/message_list_data');

set_global('page_params', {});
set_global('blueslip', global.make_zblueslip());
set_global('muting', {});

global.patch_builtin('setTimeout', (f, delay) => {
    assert.equal(delay, 0);
    return f();
});

function make_msg(msg_id) {
    return {
        id: msg_id,
        unread: true,
        topic: 'whatever',
    };
}

function make_msgs(msg_ids) {
    return msg_ids.map(make_msg);
}

function assert_contents(mld, msg_ids) {
    const msgs = mld.all_messages();
    assert.deepEqual(msgs, make_msgs(msg_ids));
}

run_test('basics', () => {
    const mld = new MessageListData({
        muting_enabled: false,
        filter: undefined,
    });

    assert.equal(mld.is_search(), false);
    assert(mld.can_mark_messages_read());
    mld.add_anywhere(make_msgs([35, 25, 15, 45]));

    assert_contents(mld, [15, 25, 35, 45]);

    const new_msgs = make_msgs([10, 20, 30, 40, 50, 60, 70]);
    const info = mld.add_messages(new_msgs);

    assert.deepEqual(info, {
        top_messages: make_msgs([10]),
        interior_messages: make_msgs([20, 30, 40]),
        bottom_messages: make_msgs([50, 60, 70]),
    });

    assert_contents(mld, [10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70]);

    assert.equal(mld.selected_id(), -1);
    assert.equal(mld.closest_id(8), 10);
    assert.equal(mld.closest_id(27), 25);
    assert.equal(mld.closest_id(72), 70);

    mld.set_selected_id(50);
    assert.equal(mld.selected_id(), 50);
    assert.equal(mld.selected_idx(), 8);

    mld.remove([mld.get(50)]);
    assert_contents(mld, [10, 15, 20, 25, 30, 35, 40, 45, 60, 70]);

    mld.update_items_for_muting();
    assert_contents(mld, [10, 15, 20, 25, 30, 35, 40, 45, 60, 70]);

    mld.reset_select_to_closest();
    assert.equal(mld.selected_id(), 45);
    assert.equal(mld.selected_idx(), 7);

    assert.equal(mld.first_unread_message_id(), 10);
    mld.get(10).unread = false;
    assert.equal(mld.first_unread_message_id(), 15);


    mld.clear();
    assert_contents(mld, []);
    assert.equal(mld.closest_id(99), -1);
    assert.equal(mld.get_last_message_sent_by_me(), undefined);

    mld.add_messages(make_msgs([120, 125.01, 130, 140]));
    assert_contents(mld, [120, 125.01, 130, 140]);
    mld.set_selected_id(125.01);
    assert.equal(mld.selected_id(), 125.01);

    mld.get(125.01).id = 145;
    mld.change_message_id(125.01, 145, {
        re_render: () => {},
    });
    assert_contents(mld, [120, 130, 140, 145]);

    for (const msg of mld.all_messages()) {
        msg.unread = false;
    }

    assert.equal(mld.first_unread_message_id(), 145);
});

run_test('muting enabled', () => {
    const mld = new MessageListData({
        muting_enabled: true,
        filter: undefined,
    });

    muting.is_topic_muted = function () { return true; };
    mld.add_anywhere(make_msgs([35, 25, 15, 45]));
    assert_contents(mld, []);

    mld.get(35).mentioned = true;
    mld.update_items_for_muting();
    assert.deepEqual(mld._items, [mld.get(35)]);

    mld.remove(make_msgs([35, 15]));
    assert_contents(mld, []);
    assert.deepEqual(mld._all_items, make_msgs([25, 45]));

    const msgs = make_msgs([10, 20]);
    msgs[0].mentioned = true;
    mld.prepend(msgs);
    assert.deepEqual(mld._items, [mld.get(10)]);
    assert.deepEqual(mld._all_items, msgs.concat(make_msgs([25, 45])));

    mld.clear();
    assert.deepEqual(mld._all_items, []);
});

run_test('more muting', () => {
    muting.is_topic_muted = function (stream_id, topic) {
        return topic === 'muted';
    };

    const mld = new MessageListData({
        muting_enabled: true,
        filter: undefined,
    });

    const orig_messages = [
        {id: 3, topic: 'muted'},
        {id: 4, topic: 'whatever'},
        {id: 7, topic: 'muted'},
        {id: 8, topic: 'whatever'},
    ];

    const orig_info = mld.add_messages(orig_messages);

    assert.deepEqual(orig_info, {
        top_messages: [],
        interior_messages: [],
        bottom_messages: [
            {id: 4, topic: 'whatever'},
            {id: 8, topic: 'whatever'},
        ],
    });

    assert.deepEqual(
        _.pluck(mld._all_items, 'id'),
        [3, 4, 7, 8]
    );

    assert.deepEqual(
        _.pluck(mld.all_messages(), 'id'),
        [4, 8]
    );

    const more_messages = [
        {id: 1, topic: 'muted'},
        {id: 2, topic: 'whatever'},
        {id: 3, topic: 'muted'}, // dup
        {id: 5, topic: 'muted'},
        {id: 6, topic: 'whatever'},
        {id: 9, topic: 'muted'},
        {id: 10, topic: 'whatever'},
    ];

    const more_info = mld.add_messages(more_messages);

    assert.deepEqual(
        _.pluck(mld._all_items, 'id'),
        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
    );

    assert.deepEqual(
        _.pluck(mld.all_messages(), 'id'),
        [2, 4, 6, 8, 10]
    );

    assert.deepEqual(more_info, {
        top_messages: [
            {id: 2, topic: 'whatever'},
        ],
        interior_messages: [
            {id: 6, topic: 'whatever'},
        ],
        bottom_messages: [
            {id: 10, topic: 'whatever'},
        ],
    });

});

run_test('errors', () => {
    const mld = new MessageListData({
        muting_enabled: false,
        filter: undefined,
    });
    assert.equal(mld.get('bogus-id'), undefined);

    blueslip.set_test_data('fatal', 'Bad message id');
    mld._add_to_hash(['asdf']);
    assert.equal(blueslip.get_test_logs('fatal').length, 1);

    blueslip.set_test_data('error', 'Duplicate message added to MessageListData');
    mld._hash[1] = 'taken';
    mld._add_to_hash(make_msgs([1]));
    assert.equal(blueslip.get_test_logs('error').length, 1);
});