import _ from "lodash";

import render_topic_muted from "../templates/topic_muted.hbs";

import * as channel from "./channel";
import * as feedback_widget from "./feedback_widget";
import {$t} from "./i18n";
import * as message_lists from "./message_lists";
import * as overlays from "./overlays";
import * as recent_topics_ui from "./recent_topics_ui";
import * as settings_muted_topics from "./settings_muted_topics";
import * as stream_data from "./stream_data";
import * as stream_list from "./stream_list";
import * as stream_popover from "./stream_popover";
import * as unread_ui from "./unread_ui";
import * as user_topics from "./user_topics";

export function rerender_for_muted_topic(old_muted_topics) {
    stream_list.update_streams_sidebar();
    message_lists.current.update_muting_and_rerender();
    if (message_lists.current !== message_lists.home) {
        message_lists.home.update_muting_and_rerender();
    }
    if (overlays.settings_open() && settings_muted_topics.loaded) {
        settings_muted_topics.populate_list();
    }

    // We only update those topics which could have been affected, because
    // we want to avoid doing a complete rerender of the recent topics view,
    // because that can be expensive.
    const current_muted_topics = user_topics.get_muted_topics();
    const maybe_affected_topics = _.unionWith(old_muted_topics, current_muted_topics, _.isEqual);

    for (const topic_data of maybe_affected_topics) {
        recent_topics_ui.update_topic_is_muted(topic_data.stream_id, topic_data.topic);
    }
}

export function handle_topic_updates(muted_topics_list) {
    const old_muted_topics = user_topics.get_muted_topics();
    user_topics.set_muted_topics(muted_topics_list);
    stream_popover.hide_topic_popover();
    unread_ui.update_unread_counts();
    rerender_for_muted_topic(old_muted_topics);
}

export function mute_topic(stream_id, topic, from_hotkey) {
    const stream_name = stream_data.maybe_get_stream_name(stream_id);
    const data = {
        stream_id,
        topic,
        op: "add",
    };

    channel.patch({
        url: "/json/users/me/subscriptions/muted_topics",
        data,
        success() {
            if (!from_hotkey) {
                return;
            }

            // The following feedback_widget notice helps avoid
            // confusion when a user who is not familiar with Zulip's
            // keyboard UI hits "M" in the wrong context and has a
            // bunch of messages suddenly disappear.  This notice is
            // only useful when muting from the keyboard, since you
            // know what you did if you triggered muting with the
            // mouse.
            feedback_widget.show({
                populate($container) {
                    const rendered_html = render_topic_muted();
                    $container.html(rendered_html);
                    $container.find(".stream").text(stream_name);
                    $container.find(".topic").text(topic);
                },
                on_undo() {
                    unmute_topic(stream_id, topic);
                },
                title_text: $t({defaultMessage: "Topic muted"}),
                undo_button_text: $t({defaultMessage: "Unmute"}),
            });
        },
    });
}

export function unmute_topic(stream_id, topic) {
    // Accidentally unmuting a topic isn't as much an issue as accidentally muting
    // a topic, so we don't show a popup after unmuting.
    const data = {
        stream_id,
        topic,
        op: "remove",
    };

    channel.patch({
        url: "/json/users/me/subscriptions/muted_topics",
        data,
        success() {
            feedback_widget.dismiss();
        },
    });
}

export function toggle_topic_mute(message) {
    const stream_id = message.stream_id;
    const topic = message.topic;

    if (user_topics.is_topic_muted(stream_id, topic)) {
        unmute_topic(stream_id, topic);
    } else if (message.type === "stream") {
        mute_topic(stream_id, topic, true);
    }
}