/*
 * Vencord, a modification for Discord's desktop app
 * Copyright (c) 2023 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 { isPluginEnabled } from "@api/PluginManager";
import { definePluginSettings } from "@api/Settings";
import NoReplyMentionPlugin from "@plugins/noReplyMention";
import { Devs, EquicordDevs } from "@utils/constants";
import definePlugin, { OptionType } from "@utils/types";
import { ApplicationIntegrationType, MessageFlags } from "@vencord/discord-types/enums";
import { findByPropsLazy } from "@webpack";
import { AuthenticationStore, FluxDispatcher, MessageTypeSets, PermissionsBits, PermissionStore, RestAPI, WindowStore } from "@webpack/common";

const MessageActions = findByPropsLazy("deleteMessage", "startEditMessage");
const EditStore = findByPropsLazy("isEditing", "isEditingAny");

let isDeletePressed = false;
const keydown = (e: KeyboardEvent) => e.key === "Backspace" && (isDeletePressed = true);
const keyup = (e: KeyboardEvent) => e.key === "Backspace" && (isDeletePressed = false);
const focusChanged = () => !WindowStore.isFocused() && (isDeletePressed = false);

let doubleClickTimeout: ReturnType<typeof setTimeout> | null = null;
let pendingDoubleClickAction: (() => void) | null = null;

const settings = definePluginSettings({
    enableDeleteOnClick: {
        type: OptionType.BOOLEAN,
        description: "Enable delete on click while holding backspace",
        default: true
    },
    enableDoubleClickToEdit: {
        type: OptionType.BOOLEAN,
        description: "Enable double click to edit",
        default: true
    },
    enableDoubleClickToReply: {
        type: OptionType.BOOLEAN,
        description: "Enable double click to reply",
        default: true
    },
    enableTripleClickToReact: {
        type: OptionType.BOOLEAN,
        description: "Enable triple click to react with an emoji",
        default: false
    },
    reactEmoji: {
        type: OptionType.STRING,
        description: "Emoji to react with (e.g. 💀 or pepe:123456789)",
        default: "💀"
    },
    requireModifier: {
        type: OptionType.BOOLEAN,
        description: "Only do double click actions when shift/ctrl is held",
        default: false
    }
});

async function react(channelId: string, messageId: string, emoji: string) {
    const trimmed = emoji.trim();
    if (!trimmed) return;

    const customMatch = trimmed.match(/^:?([\w-]+):(\d+)$/);
    const emojiParam = customMatch
        ? `${customMatch[1]}:${customMatch[2]}`
        : encodeURIComponent(trimmed);

    try {
        await RestAPI.put({
            url: `/channels/${channelId}/messages/${messageId}/reactions/${emojiParam}/@me`
        });
    } catch (e) {
        console.error("[MessageClickActions] Failed to add reaction:", e);
    }
}

export default definePlugin({
    name: "MessageClickActions",
    description: "Hold Backspace and click to delete, double click to edit/reply, triple click to react",
    authors: [Devs.Ven, EquicordDevs.keircn],

    settings,

    start() {
        document.addEventListener("keydown", keydown);
        document.addEventListener("keyup", keyup);
        WindowStore.addChangeListener(focusChanged);
    },

    stop() {
        document.removeEventListener("keydown", keydown);
        document.removeEventListener("keyup", keyup);
        WindowStore.removeChangeListener(focusChanged);
    },

    onMessageClick(msg, channel, event) {
        const myId = AuthenticationStore.getId();
        const isMe = msg.author.id === myId;
        const isSelfInvokedUserApp = msg.interactionMetadata?.authorizing_integration_owners[ApplicationIntegrationType.USER_INSTALL] === myId;

        if (isDeletePressed) {
            if (!settings.store.enableDeleteOnClick) return;
            if (!(isMe || PermissionStore.can(PermissionsBits.MANAGE_MESSAGES, channel) || isSelfInvokedUserApp)) return;

            if (msg.deleted) {
                FluxDispatcher.dispatch({
                    type: "MESSAGE_DELETE",
                    channelId: channel.id,
                    id: msg.id,
                    mlDeleted: true
                });
            } else {
                MessageActions.deleteMessage(channel.id, msg.id);
            }
            event.preventDefault();
            return;
        }

        if (event.detail === 3) {
            if (doubleClickTimeout) {
                clearTimeout(doubleClickTimeout);
                doubleClickTimeout = null;
                pendingDoubleClickAction = null;
            }

            if (settings.store.enableTripleClickToReact) {
                react(channel.id, msg.id, settings.store.reactEmoji);
                event.preventDefault();
            }
            return;
        }

        if (event.detail !== 2) return;
        if (settings.store.requireModifier && !event.ctrlKey && !event.shiftKey) return;
        if (channel.guild_id && !PermissionStore.can(PermissionsBits.SEND_MESSAGES, channel)) return;
        if (msg.deleted === true) return;

        const executeDoubleClick = () => {
            if (isMe) {
                if (!settings.store.enableDoubleClickToEdit || EditStore.isEditing(channel.id, msg.id) || msg.state !== "SENT") return;
                MessageActions.startEditMessage(channel.id, msg.id, msg.content);
            } else {
                if (!settings.store.enableDoubleClickToReply) return;
                if (!MessageTypeSets.REPLYABLE.has(msg.type) || msg.hasFlag(MessageFlags.EPHEMERAL)) return;

                const isShiftPress = event.shiftKey && !settings.store.requireModifier;
                const shouldMention = isPluginEnabled(NoReplyMentionPlugin.name)
                    ? NoReplyMentionPlugin.shouldMention(msg, isShiftPress)
                    : !isShiftPress;

                FluxDispatcher.dispatch({
                    type: "CREATE_PENDING_REPLY",
                    channel,
                    message: msg,
                    shouldMention,
                    showMentionToggle: channel.guild_id !== null
                });
            }
        };

        if (settings.store.enableTripleClickToReact) {
            if (doubleClickTimeout) {
                clearTimeout(doubleClickTimeout);
            }
            pendingDoubleClickAction = executeDoubleClick;
            doubleClickTimeout = setTimeout(() => {
                pendingDoubleClickAction?.();
                pendingDoubleClickAction = null;
                doubleClickTimeout = null;
            }, 300);
            event.preventDefault();
        } else {
            executeDoubleClick();
            event.preventDefault();
        }
    },
});