Add regional indicator reactions by just typing the corresponding keys

addreactiontext.plugin.js

//META{"name":"AddReactionText","displayName":"AddReactionText","website":"https://gist.github.com/Cholik/a30a58bae7176baa7766bfd156f3e30e","source":"https://gist.githubusercontent.com/Cholik/a30a58bae7176baa7766bfd156f3e30e/raw/addreactiontext.plugin.js?update"}*//
class AddReactionText {
    getName() {
        return "AddReactionText";
    }
    getDescription() {
        return "Adds typed letters as reaction lel";
    }
    getVersion() {
        return "0.1.14";
    }
    getAuthor() {
        return "Cholik";
    }

    start() {
        ZLibrary.PluginUpdater.checkForUpdate(
            this.getName(),
            this.getVersion(),
            "https://gist.githubusercontent.com/Cholik/a30a58bae7176baa7766bfd156f3e30e/raw/addreactiontext.plugin.js"
        );
        this.ri = {
            A: "🇦",
            B: "🇧",
            C: "🇨",
            D: "🇩",
            E: "🇪",
            F: "🇫",
            G: "🇬",
            H: "🇭",
            I: "🇮",
            J: "🇯",
            K: "🇰",
            L: "🇱",
            M: "🇲",
            N: "🇳",
            O: "🇴",
            P: "🇵",
            Q: "🇶",
            R: "🇷",
            S: "🇸",
            T: "🇹",
            U: "🇺",
            V: "🇻",
            W: "🇼",
            X: "🇽",
            Y: "🇾",
            Z: "🇿",
            "0": "0️⃣",
            "1": "1️⃣",
            "2": "2️⃣",
            "3": "3️⃣",
            "4": "4️⃣",
            "5": "5️⃣",
            "6": "6️⃣",
            "7": "7️⃣",
            "8": "8️⃣",
            "9": "9️⃣"
        };
        if (!global.BDFDB) global.BDFDB = {
            myPlugins: {}
        };
        if (global.BDFDB && global.BDFDB.myPlugins && typeof global.BDFDB.myPlugins == "object") global.BDFDB.myPlugins[this.getName()] = this;
        var libraryScript = document.querySelector('head script#BDFDBLibraryScript');
        if (!libraryScript || (performance.now() - libraryScript.getAttribute("date")) > 600000) {
            if (libraryScript) libraryScript.remove();
            libraryScript = document.createElement("script");
            libraryScript.setAttribute("id", "BDFDBLibraryScript");
            libraryScript.setAttribute("type", "text/javascript");
            libraryScript.setAttribute("src", "https://mwittrien.github.io/BetterDiscordAddons/Plugins/BDFDB.min.js");
            libraryScript.setAttribute("date", performance.now());
            libraryScript.addEventListener("load", () => {
                this.initialize();
            });
            document.head.appendChild(libraryScript);
        } else if (global.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) this.initialize();
        this.startTimeout = setTimeout(() => {
            this.initialize();
        }, 30000);

        this.interceptInput = false;
        this.activeMessage = null;
        this.lastMessage = [];

        window.onkeyup = (function(evt) {
            if (this.interceptInput) {
                var input = document.querySelector('textarea');

                input.focus();
                input.selectionStart = 0;
                input.selectionEnd = input.value.length;
                document.execCommand("insertText", false, '');
                input.selectionStart = input.value.length;
                input.selectionEnd = input.value.length;

                var charCode = evt.keyCode || evt.which;
                if (charCode == 13 || charCode == 27) {
                    this.interceptInput = false;
                    BdApi.showToast(
                        "AddReactionText mode deactivated.", {
                            type: "info"
                        }
                    );
                    return;
                } else if (charCode == 8) {
                    if (this.lastMessage.length > 0) {
                        this.processMessage(charStr, this.activeMessage, true);
                        return;
                    }
                }

                var charStr = String.fromCharCode(charCode);
                this.processMessage(charStr, this.activeMessage);
            }
        }).bind(this);
    }

    initialize() {
        if (global.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) {
            if (this.started) return;
            BDFDB.PluginUtils.init(this);
        } else console.error(`%c[${this.getName()}]%c`, 'color: #3a71c1; font-weight: 700;', '', 'Fatal Error: Could not load BD functions!');
    }

    stop() {
        if (global.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) {
            this.stopping = true;

            BDFDB.PluginUtils.clear(this);
        }
    }

    onMessageContextMenu(e) {
        if (e.instance.props && e.instance.props.message && e.instance.props.message.content && e.instance.props.target) {
            let [children, index] = BDFDB.ContextMenuUtils.findItem(e.returnvalue, {id: "add-reaction", group: true});
            const itemgroup = BDFDB.ContextMenuUtils.createItem(BDFDB.LibraryComponents.MenuItems.MenuGroup, {
                children: [
					BDFDB.ContextMenuUtils.createItem(BDFDB.LibraryComponents.MenuItems.MenuItem, {
                        label: "Add text reaction",
                        hint: null,
                        id: BDFDB.ContextMenuUtils.createItemId(this.name, "add-text-reaction"),
                        action: _ => {
                            BDFDB.ContextMenuUtils.close(e.instance);
                            this.initReactionInput(e.instance);
                        }
                    })
				]
            });
            if (index > -1) children.splice(index + 1, 0, itemgroup);
            else children.push(itemgroup);
        }
    }

    onMessageOptionContextMenu(e) {
        if (e.instance.props.message && e.instance.props.channel) {
            let [children, index] = BDFDB.ContextMenuUtils.findItem(e.returnvalue, {id: "copy-id"});
            const copyItem = BDFDB.ContextMenuUtils.createItem(BDFDB.LibraryComponents.MenuItems.MenuItem, {
                label: "Add text reaction",
                id: BDFDB.ContextMenuUtils.createItemId(this.name, "add-text-reaction-option"),
                action: _ => {
                    e.instance.props.onClose();
                    this.initReactionInput(e.instance);
                }
            });
            children.splice(index + 1, 0, copyItem);
        }
    }

    initReactionInput(instance) {
        this.lastMessage = [];
        this.activeMessage = {
            id: instance.props.message.id,
            channel: instance.props.message.channel_id
        };
        this.interceptInput = true;
        BdApi.showToast(
            "Type to enter reactions, exit this mode with Enter/ESC.\n" +
            "Use backspace to delete typed reactions.", {
                type: "info",
                timeout: 3000
            }
        );
    }

    processMessage(input, messageContext, remove) {
        remove = remove || false;
        if (remove) {
            var i = this.lastMessage.pop();
            this.removeReaction(
                messageContext.channel,
                messageContext.id,
                this.ri[i]
            );
            return;
        }
        if (this.ri[input]) {
            this.lastMessage.push(input);
            this.addReaction(
                messageContext.channel,
                messageContext.id,
                this.ri[input]
            );
        }
    }

    addReaction(channelId, messageId, emoji) {
        BDFDB.LibraryModules.ReactionUtils.addReaction(
            channelId,
            messageId, {
                id: null,
                name: emoji
            }
        );
    }

    removeReaction(channelId, messageId, emoji) {
        BDFDB.LibraryModules.ReactionUtils.removeReaction(
            channelId,
            messageId, {
                id: null,
                name: emoji
            }
        );
    }
}