/*
 * Vencord, a modification for Discord's desktop app
 * Copyright (c) 2022 Vendicated and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

import ErrorBoundary from "@components/ErrorBoundary";
import { LazyComponent } from "@utils/misc";
import { formatDuration } from "@utils/text";
import { find, findByPropsLazy } from "@webpack";
import { FluxDispatcher, GuildMemberStore, GuildStore, moment, Parser, PermissionStore, SnowflakeUtils, Text, Timestamp, Tooltip } from "@webpack/common";
import type { Channel } from "discord-types/general";
import type { ComponentType } from "react";

import { VIEW_CHANNEL } from "..";


enum SortOrderTypes {
    LATEST_ACTIVITY = 0,
    CREATION_DATE = 1
}

enum ForumLayoutTypes {
    DEFAULT = 0,
    LIST = 1,
    GRID = 2
}

interface DefaultReaction {
    emojiId: string | null;
    emojiName: string | null;
}

interface Tag {
    id: string;
    name: string;
    emojiId: string | null;
    emojiName: string | null;
    moderated: boolean;
}

interface ExtendedChannel extends Channel {
    defaultThreadRateLimitPerUser?: number;
    defaultSortOrder?: SortOrderTypes | null;
    defaultForumLayout?: ForumLayoutTypes;
    defaultReactionEmoji?: DefaultReaction | null;
    availableTags?: Array<Tag>;
}

enum ChannelTypes {
    GUILD_TEXT = 0,
    GUILD_VOICE = 2,
    GUILD_ANNOUNCEMENT = 5,
    GUILD_STAGE_VOICE = 13,
    GUILD_FORUM = 15
}

enum VideoQualityModes {
    AUTO = 1,
    FULL = 2
}

enum ChannelFlags {
    PINNED = 1 << 1,
    REQUIRE_TAG = 1 << 4
}

let ChannelBeginHeader: ComponentType<any>;

export function setChannelBeginHeaderComponent(component: ComponentType<any>) {
    ChannelBeginHeader = component;
}

const ChatScrollClasses = findByPropsLazy("auto", "content", "scrollerBase");
const ChatClasses = findByPropsLazy("chat", "content", "noChat", "chatContent");
const TagComponent = LazyComponent(() => find(m => {
    if (typeof m !== "function") return false;

    const code = Function.prototype.toString.call(m);
    // Get the component which doesn't include increasedActivity logic
    return code.includes(".Messages.FORUM_TAG_A11Y_FILTER_BY_TAG") && !code.includes("increasedActivityPill");
}));

const ChannelTypesToChannelNames = {
    [ChannelTypes.GUILD_TEXT]: "text",
    [ChannelTypes.GUILD_ANNOUNCEMENT]: "announcement",
    [ChannelTypes.GUILD_FORUM]: "forum",
    [ChannelTypes.GUILD_VOICE]: "voice",
    [ChannelTypes.GUILD_STAGE_VOICE]: "stage"
};

const SortOrderTypesToNames = {
    [SortOrderTypes.LATEST_ACTIVITY]: "Latest activity",
    [SortOrderTypes.CREATION_DATE]: "Creation date"
};

const ForumLayoutTypesToNames = {
    [ForumLayoutTypes.DEFAULT]: "Not set",
    [ForumLayoutTypes.LIST]: "List view",
    [ForumLayoutTypes.GRID]: "Gallery view"
};

const VideoQualityModesToNames = {
    [VideoQualityModes.AUTO]: "Automatic",
    [VideoQualityModes.FULL]: "720p"
};

// Icon from the modal when clicking a message link you don't have access to view
const HiddenChannelLogo = "/assets/433e3ec4319a9d11b0cbe39342614982.svg";

function HiddenChannelLockScreen({ channel }: { channel: ExtendedChannel; }) {
    const {
        type,
        topic,
        lastMessageId,
        defaultForumLayout,
        lastPinTimestamp,
        defaultAutoArchiveDuration,
        availableTags,
        id: channelId,
        rateLimitPerUser,
        defaultThreadRateLimitPerUser,
        defaultSortOrder,
        defaultReactionEmoji,
        bitrate,
        rtcRegion,
        videoQualityMode,
        permissionOverwrites
    } = channel;

    const membersToFetch: Array<string> = [];

    const guildOwnerId = GuildStore.getGuild(channel.guild_id).ownerId;
    if (!GuildMemberStore.getMember(channel.guild_id, guildOwnerId)) membersToFetch.push(guildOwnerId);

    Object.values(permissionOverwrites).forEach(({ type, id: userId }) => {
        if (type === 1) {
            if (!GuildMemberStore.getMember(channel.guild_id, userId)) membersToFetch.push(userId);
        }
    });

    if (membersToFetch.length > 0) {
        FluxDispatcher.dispatch({
            type: "GUILD_MEMBERS_REQUEST",
            guildIds: [channel.guild_id],
            userIds: membersToFetch
        });
    }

    return (
        <div className={ChatScrollClasses.auto + " " + ChatScrollClasses.customTheme + " " + ChatClasses.chatContent + " " + "shc-lock-screen-outer-container"}>
            <div className="shc-lock-screen-container">
                <img className="shc-lock-screen-logo" src={HiddenChannelLogo} />

                <div className="shc-lock-screen-heading-container">
                    <Text variant="heading-xxl/bold">This is a {!PermissionStore.can(VIEW_CHANNEL, channel) ? "hidden" : "locked"} {ChannelTypesToChannelNames[type]} channel.</Text>
                    {channel.isNSFW() &&
                        <Tooltip text="NSFW">
                            {({ onMouseLeave, onMouseEnter }) => (
                                <svg
                                    onMouseLeave={onMouseLeave}
                                    onMouseEnter={onMouseEnter}
                                    className="shc-lock-screen-heading-nsfw-icon"
                                    width="32"
                                    height="32"
                                    viewBox="0 0 48 48"
                                    aria-hidden={true}
                                    role="img"
                                >
                                    <path d="M.7 43.05 24 2.85l23.3 40.2Zm23.55-6.25q.75 0 1.275-.525.525-.525.525-1.275 0-.75-.525-1.3t-1.275-.55q-.8 0-1.325.55-.525.55-.525 1.3t.55 1.275q.55.525 1.3.525Zm-1.85-6.1h3.65V19.4H22.4Z" />
                                </svg>
                            )}
                        </Tooltip>
                    }
                </div>

                {(!channel.isGuildVoice() && !channel.isGuildStageVoice()) && (
                    <Text variant="text-lg/normal">
                        You can not see the {channel.isForumChannel() ? "posts" : "messages"} of this channel.
                        {channel.isForumChannel() && topic && topic.length > 0 && "However you may see its guidelines:"}
                    </Text >
                )}

                {channel.isForumChannel() && topic && topic.length > 0 && (
                    <div className="shc-lock-screen-topic-container">
                        {Parser.parseTopic(topic, false, { channelId })}
                    </div>
                )}

                {lastMessageId &&
                    <Text variant="text-md/normal">
                        Last {channel.isForumChannel() ? "post" : "message"} created:
                        <Timestamp timestamp={moment(SnowflakeUtils.extractTimestamp(lastMessageId))} />
                    </Text>
                }

                {lastPinTimestamp &&
                    <Text variant="text-md/normal">Last message pin: <Timestamp timestamp={moment(lastPinTimestamp)} /></Text>
                }
                {(rateLimitPerUser ?? 0) > 0 &&
                    <Text variant="text-md/normal">Slowmode: {formatDuration(rateLimitPerUser!, "seconds")}</Text>
                }
                {(defaultThreadRateLimitPerUser ?? 0) > 0 &&
                    <Text variant="text-md/normal">
                        Default thread slowmode: {formatDuration(defaultThreadRateLimitPerUser!, "seconds")}
                    </Text>
                }
                {((channel.isGuildVoice() || channel.isGuildStageVoice()) && bitrate != null) &&
                    <Text variant="text-md/normal">Bitrate: {bitrate} bits</Text>
                }
                {rtcRegion !== undefined &&
                    <Text variant="text-md/normal">Region: {rtcRegion ?? "Automatic"}</Text>
                }
                {(channel.isGuildVoice() || channel.isGuildStageVoice()) &&
                    <Text variant="text-md/normal">Video quality mode: {VideoQualityModesToNames[videoQualityMode ?? VideoQualityModes.AUTO]}</Text>
                }
                {(defaultAutoArchiveDuration ?? 0) > 0 &&
                    <Text variant="text-md/normal">
                        Default inactivity duration before archiving {channel.isForumChannel() ? "posts" : "threads"}:
                        {" " + formatDuration(defaultAutoArchiveDuration!, "minutes")}
                    </Text>
                }
                {defaultForumLayout != null &&
                    <Text variant="text-md/normal">Default layout: {ForumLayoutTypesToNames[defaultForumLayout]}</Text>
                }
                {defaultSortOrder != null &&
                    <Text variant="text-md/normal">Default sort order: {SortOrderTypesToNames[defaultSortOrder]}</Text>
                }
                {defaultReactionEmoji != null &&
                    <div className="shc-lock-screen-default-emoji-container">
                        <Text variant="text-md/normal">Default reaction emoji:</Text>
                        {Parser.defaultRules[defaultReactionEmoji.emojiName ? "emoji" : "customEmoji"].react({
                            name: defaultReactionEmoji.emojiName ?? "",
                            emojiId: defaultReactionEmoji.emojiId
                        })}
                    </div>
                }
                {channel.hasFlag(ChannelFlags.REQUIRE_TAG) &&
                    <Text variant="text-md/normal">Posts on this forum require a tag to be set.</Text>
                }
                {availableTags && availableTags.length > 0 &&
                    <div className="shc-lock-screen-tags-container">
                        <Text variant="text-lg/bold">Available tags:</Text>
                        <div className="shc-lock-screen-tags">
                            {availableTags.map(tag => <TagComponent tag={tag} />)}
                        </div>
                    </div>
                }
                <div className="shc-lock-screen-allowed-users-and-roles-container">
                    <Text variant="text-lg/bold">Allowed users and roles:</Text>
                    <ChannelBeginHeader channel={channel} />
                </div>
            </div>
        </div>
    );
}

export default ErrorBoundary.wrap(HiddenChannelLockScreen);