const noop = function () {};
const return_false = function () {
    return false;
};
const return_true = function () {
    return true;
};

set_global("document", {
    location: {}, // we need this to load compose.js
});

set_global("page_params", {});

set_global("$", global.make_zjquery());

set_global("compose_pm_pill", {});

set_global("hash_util", {});

zrequire("people");
zrequire("compose_ui");
zrequire("compose");
zrequire("compose_state");
zrequire("compose_actions");
zrequire("stream_data");

set_global("document", "document-stub");

const start = compose_actions.start;
const cancel = compose_actions.cancel;
const get_focus_area = compose_actions._get_focus_area;
const respond_to_message = compose_actions.respond_to_message;
const reply_with_mention = compose_actions.reply_with_mention;
const quote_and_reply = compose_actions.quote_and_reply;

const compose_state = global.compose_state;

compose_state.private_message_recipient = (function () {
    let recipient;

    return function (arg) {
        if (arg === undefined) {
            return recipient;
        }

        recipient = arg;
    };
})();

set_global("reload_state", {
    is_in_progress: return_false,
});

set_global("notifications", {
    clear_compose_notifications: noop,
});

set_global("compose_fade", {
    clear_compose: noop,
});

set_global("drafts", {
    update_draft: noop,
});

set_global("narrow_state", {
    set_compose_defaults: noop,
});

set_global("unread_ops", {
    notify_server_message_read: noop,
});

set_global("common", {
    status_classes: "status_classes",
});

function stub_selected_message(msg) {
    set_global("current_msg_list", {
        selected_message() {
            return msg;
        },
        can_mark_messages_read() {
            return true;
        },
    });
}

function stub_channel_get(success_value) {
    set_global("channel", {
        get(opts) {
            opts.success(success_value);
        },
    });
}

function assert_visible(sel) {
    assert($(sel).visible());
}

function assert_hidden(sel) {
    assert(!$(sel).visible());
}

run_test("initial_state", () => {
    assert.equal(compose_state.composing(), false);
    assert.equal(compose_state.get_message_type(), false);
    assert.equal(compose_state.has_message_content(), false);
});

run_test("start", () => {
    compose_actions.autosize_message_content = noop;
    compose_actions.expand_compose_box = noop;
    compose_actions.set_focus = noop;
    compose_actions.complete_starting_tasks = noop;
    compose_actions.blur_compose_inputs = noop;
    compose_actions.clear_textarea = noop;

    // Start stream message
    global.narrow_state.set_compose_defaults = function () {
        const opts = {};
        opts.stream = "stream1";
        opts.topic = "topic1";
        return opts;
    };

    let opts = {};
    start("stream", opts);

    assert_visible("#stream-message");
    assert_hidden("#private-message");

    assert.equal($("#stream_message_recipient_stream").val(), "stream1");
    assert.equal($("#stream_message_recipient_topic").val(), "topic1");
    assert.equal(compose_state.get_message_type(), "stream");
    assert(compose_state.composing());

    // Autofill stream field for single subscription
    const denmark = {
        subscribed: true,
        color: "blue",
        name: "Denmark",
        stream_id: 1,
    };
    stream_data.add_sub(denmark);

    global.narrow_state.set_compose_defaults = function () {
        const opts = {};
        opts.trigger = "new topic button";
        return opts;
    };

    opts = {};
    start("stream", opts);
    assert.equal($("#stream_message_recipient_stream").val(), "Denmark");
    assert.equal($("#stream_message_recipient_topic").val(), "");

    global.narrow_state.set_compose_defaults = function () {
        const opts = {};
        opts.trigger = "compose_hotkey";
        return opts;
    };

    opts = {};
    start("stream", opts);
    assert.equal($("#stream_message_recipient_stream").val(), "Denmark");
    assert.equal($("#stream_message_recipient_topic").val(), "");

    const social = {
        subscribed: true,
        color: "red",
        name: "social",
        stream_id: 2,
    };
    stream_data.add_sub(social);

    // More than 1 subscription, do not autofill
    opts = {};
    start("stream", opts);
    assert.equal($("#stream_message_recipient_stream").val(), "");
    assert.equal($("#stream_message_recipient_topic").val(), "");
    stream_data.clear_subscriptions();

    // Start PM
    global.narrow_state.set_compose_defaults = function () {
        const opts = {};
        opts.private_message_recipient = "foo@example.com";
        return opts;
    };

    opts = {
        content: "hello",
    };

    start("private", opts);

    assert_hidden("#stream-message");
    assert_visible("#private-message");

    assert.equal(compose_state.private_message_recipient(), "foo@example.com");
    assert.equal($("#compose-textarea").val(), "hello");
    assert.equal(compose_state.get_message_type(), "private");
    assert(compose_state.composing());

    // Cancel compose.
    let pill_cleared;
    compose_pm_pill.clear = function () {
        pill_cleared = true;
    };

    let abort_xhr_called = false;
    compose.abort_xhr = () => {
        abort_xhr_called = true;
    };

    assert_hidden("#compose_controls");
    cancel();
    assert(abort_xhr_called);
    assert(pill_cleared);
    assert_visible("#compose_controls");
    assert_hidden("#private-message");
    assert(!compose_state.composing());
});

run_test("respond_to_message", () => {
    // Test PM
    const person = {
        user_id: 22,
        email: "alice@example.com",
        full_name: "Alice",
    };
    people.add_active_user(person);

    let msg = {
        type: "private",
        sender_id: person.user_id,
    };
    stub_selected_message(msg);

    let opts = {
        reply_type: "personal",
    };

    respond_to_message(opts);
    assert.equal(compose_state.private_message_recipient(), "alice@example.com");

    // Test stream
    msg = {
        type: "stream",
        stream: "devel",
        topic: "python",
        reply_to: "bob", // compose.start needs this for dubious reasons
    };
    stub_selected_message(msg);

    opts = {};

    respond_to_message(opts);
    assert.equal($("#stream_message_recipient_stream").val(), "devel");
});

run_test("reply_with_mention", () => {
    const msg = {
        type: "stream",
        stream: "devel",
        topic: "python",
        reply_to: "bob", // compose.start needs this for dubious reasons
        sender_full_name: "Bob Roberts",
        sender_id: 40,
    };
    stub_selected_message(msg);

    let syntax_to_insert;
    compose_ui.insert_syntax_and_focus = function (syntax) {
        syntax_to_insert = syntax;
    };

    const opts = {};

    reply_with_mention(opts);
    assert.equal($("#stream_message_recipient_stream").val(), "devel");
    assert.equal(syntax_to_insert, "@**Bob Roberts**");
    assert(compose_state.has_message_content());

    // Test for extended mention syntax
    const bob_1 = {
        user_id: 30,
        email: "bob1@example.com",
        full_name: "Bob Roberts",
    };
    people.add_active_user(bob_1);
    const bob_2 = {
        user_id: 40,
        email: "bob2@example.com",
        full_name: "Bob Roberts",
    };
    people.add_active_user(bob_2);

    reply_with_mention(opts);
    assert.equal($("#stream_message_recipient_stream").val(), "devel");
    assert.equal(syntax_to_insert, "@**Bob Roberts|40**");
    assert(compose_state.has_message_content());
});

run_test("quote_and_reply", () => {
    const msg = {
        type: "stream",
        stream: "devel",
        topic: "python",
        reply_to: "bob",
        sender_full_name: "Bob Roberts",
        sender_id: 40,
    };
    hash_util.by_conversation_and_time_uri = () => "link_to_message";
    stub_selected_message(msg);
    stub_channel_get({
        raw_content: "Testing.",
    });

    current_msg_list.selected_id = function () {
        return 100;
    };

    compose_ui.insert_syntax_and_focus = function (syntax) {
        assert.equal(syntax, "[Quoting…]\n");
    };

    compose_ui.replace_syntax = function (syntax, replacement) {
        assert.equal(syntax, "[Quoting…]");
        assert.equal(
            replacement,
            "@_**Bob Roberts|40** [said](link_to_message):\n```quote\nTesting.\n```",
        );
    };

    const opts = {
        reply_type: "personal",
    };

    $("#compose-textarea").caret = (pos) => {
        assert.equal(pos, 0);
    };

    quote_and_reply(opts);

    current_msg_list.selected_message = function () {
        return {
            type: "stream",
            stream: "devel",
            topic: "test",
            reply_to: "bob",
            sender_full_name: "Bob Roberts",
            sender_id: 40,
            raw_content: "Testing.",
        };
    };

    channel.get = function () {
        assert.fail("channel.get should not be used if raw_content is present");
    };

    quote_and_reply(opts);

    current_msg_list.selected_message = function () {
        return {
            type: "stream",
            stream: "devel",
            topic: "test",
            reply_to: "bob",
            sender_full_name: "Bob Roberts",
            sender_id: 40,
            raw_content: "```\nmultiline code block\nshoudln't mess with quotes\n```",
        };
    };
    compose_ui.replace_syntax = function (syntax, replacement) {
        assert.equal(syntax, "[Quoting…]");
        assert.equal(
            replacement,
            "@_**Bob Roberts|40** [said](link_to_message):\n````quote\n```\nmultiline code block\nshoudln't mess with quotes\n```\n````",
        );
    };
    quote_and_reply(opts);
});

run_test("get_focus_area", () => {
    assert.equal(get_focus_area("private", {}), "#private_message_recipient");
    assert.equal(
        get_focus_area("private", {
            private_message_recipient: "bob@example.com",
        }),
        "#compose-textarea",
    );
    assert.equal(get_focus_area("stream", {}), "#stream_message_recipient_stream");
    assert.equal(get_focus_area("stream", {stream: "fun"}), "#stream_message_recipient_topic");
    assert.equal(get_focus_area("stream", {stream: "fun", topic: "more"}), "#compose-textarea");
    assert.equal(
        get_focus_area("stream", {stream: "fun", topic: "more", trigger: "new topic button"}),
        "#stream_message_recipient_topic",
    );
});

run_test("focus_in_empty_compose", () => {
    $("#compose-textarea").is = function (attr) {
        assert.equal(attr, ":focus");
        return $("#compose-textarea").is_focused;
    };

    compose_state.composing = return_true;
    $("#compose-textarea").val("");
    $("#compose-textarea").trigger("focus");
    assert(compose_state.focus_in_empty_compose());

    compose_state.composing = return_false;
    assert(!compose_state.focus_in_empty_compose());

    $("#compose-textarea").val("foo");
    assert(!compose_state.focus_in_empty_compose());

    $("#compose-textarea").trigger("blur");
    assert(!compose_state.focus_in_empty_compose());
});

run_test("on_narrow", () => {
    let cancel_called = false;
    compose_actions.cancel = function () {
        cancel_called = true;
    };
    compose_actions.on_narrow({
        force_close: true,
    });
    assert(cancel_called);

    let on_topic_narrow_called = false;
    compose_actions.on_topic_narrow = function () {
        on_topic_narrow_called = true;
    };
    narrow_state.narrowed_by_topic_reply = function () {
        return true;
    };
    compose_actions.on_narrow({
        force_close: false,
    });
    assert(on_topic_narrow_called);

    let update_message_list_called = false;
    narrow_state.narrowed_by_topic_reply = function () {
        return false;
    };
    compose_fade.update_message_list = function () {
        update_message_list_called = true;
    };
    compose_state.has_message_content = function () {
        return true;
    };
    compose_actions.on_narrow({
        force_close: false,
    });
    assert(update_message_list_called);

    compose_state.has_message_content = function () {
        return false;
    };
    let start_called = false;
    compose_actions.start = function () {
        start_called = true;
    };
    narrow_state.narrowed_by_pm_reply = function () {
        return true;
    };
    compose_actions.on_narrow({
        force_close: false,
        trigger: "not-search",
        private_message_recipient: "not@empty.com",
    });
    assert(start_called);

    start_called = false;
    compose_actions.on_narrow({
        force_close: false,
        trigger: "search",
        private_message_recipient: "",
    });
    assert(!start_called);

    narrow_state.narrowed_by_pm_reply = function () {
        return false;
    };
    cancel_called = false;
    compose_actions.on_narrow({
        force_close: false,
    });
    assert(cancel_called);
});