3 files changed, 268 insertions, 0 deletions
diff --git a/src/plugins/pinDms/contextMenus.tsx b/src/plugins/pinDms/contextMenus.tsx
new file mode 100644
index 0000000..b04ba8c
--- /dev/null
+++ b/src/plugins/pinDms/contextMenus.tsx
@@ -0,0 +1,74 @@
+/*
+ * 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 { addContextMenuPatch, findGroupChildrenByChildId, NavContextMenuPatchCallback, removeContextMenuPatch } from "@api/ContextMenu";
+import { Menu } from "@webpack/common";
+
+import { isPinned, movePin, snapshotArray, togglePin } from "./settings";
+
+function PinMenuItem(channelId: string) {
+    const pinned = isPinned(channelId);
+
+    return (
+        <>
+            <Menu.MenuItem
+                id="pin-dm"
+                label={pinned ? "Unpin DM" : "Pin DM"}
+                action={() => togglePin(channelId)}
+            />
+            {pinned && snapshotArray[0] !== channelId && (
+                <Menu.MenuItem
+                    id="move-pin-up"
+                    label="Move Pin Up"
+                    action={() => movePin(channelId, -1)}
+                />
+            )}
+            {pinned && snapshotArray[snapshotArray.length - 1] !== channelId && (
+                <Menu.MenuItem
+                    id="move-pin-down"
+                    label="Move Pin Down"
+                    action={() => movePin(channelId, +1)}
+                />
+            )}
+        </>
+    );
+}
+
+const GroupDMContext: NavContextMenuPatchCallback = (children, props) => {
+    const container = findGroupChildrenByChildId("leave-channel", children);
+    if (container)
+        container.unshift(PinMenuItem(props.channel.id));
+};
+
+const UserContext: NavContextMenuPatchCallback = (children, props) => {
+    const container = findGroupChildrenByChildId("close-dm", children);
+    if (container) {
+        const idx = container.findIndex(c => c?.props?.id === "close-dm");
+        container.splice(idx, 0, PinMenuItem(props.channel.id));
+    }
+};
+
+export function addContextMenus() {
+    addContextMenuPatch("gdm-context", GroupDMContext);
+    addContextMenuPatch("user-context", UserContext);
+}
+
+export function removeContextMenus() {
+    removeContextMenuPatch("gdm-context", GroupDMContext);
+    removeContextMenuPatch("user-context", UserContext);
+}
diff --git a/src/plugins/pinDms/index.tsx b/src/plugins/pinDms/index.tsx
new file mode 100644
index 0000000..1cc6289
--- /dev/null
+++ b/src/plugins/pinDms/index.tsx
@@ -0,0 +1,127 @@
+/*
+ * 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 { Devs } from "@utils/constants";
+import definePlugin from "@utils/types";
+import { Channel } from "discord-types/general";
+
+import { addContextMenus, removeContextMenus } from "./contextMenus";
+import { getPinAt, isPinned, snapshotArray, usePinnedDms } from "./settings";
+
+export default definePlugin({
+    name: "PinDMs",
+    description: "Allows you to pin private channels to the top of your DM list. To pin/unpin or reorder pins, right click DMs",
+    authors: [Devs.Ven, Devs.Strencher],
+
+    dependencies: ["ContextMenuAPI"],
+
+    start: addContextMenus,
+    stop: removeContextMenus,
+
+    usePinCount(channelIds: string[]) {
+        const pinnedDms = usePinnedDms();
+        // See comment on 2nd patch for reasoning
+        return channelIds.length ? [pinnedDms.size] : [];
+    },
+
+    getChannel(channels: Record<string, Channel>, idx: number) {
+        return channels[getPinAt(idx)];
+    },
+
+    isPinned,
+    getSnapshot: () => snapshotArray,
+
+    getScrollOffset(channelId: string, rowHeight: number, padding: number, preRenderedChildren: number, originalOffset: number) {
+        if (!isPinned(channelId))
+            return (
+                (rowHeight + padding) * 2 // header
+                + rowHeight * snapshotArray.length // pins
+                + originalOffset // original pin offset minus pins
+            );
+
+        return rowHeight * (snapshotArray.indexOf(channelId) + preRenderedChildren) + padding;
+    },
+
+    patches: [
+        // Patch DM list
+        {
+            find: ".privateChannelsHeaderContainer,",
+            replacement: [
+                {
+                    // filter Discord's privateChannelIds list to remove pins, and pass
+                    // pinCount as prop. This needs to be here so that the entire DM list receives
+                    // updates on pin/unpin
+                    match: /privateChannelIds:(\i),/,
+                    replace: "privateChannelIds:$1.filter(c=>!$self.isPinned(c)),pinCount:$self.usePinCount($1),"
+                },
+                {
+                    // sections is an array of numbers, where each element is a section and
+                    // the number is the amount of rows. Add our pinCount in second place
+                    // - Section 1: buttons for pages like Friends & Library
+                    // - Section 2: our pinned dms
+                    // - Section 3: the normal dm list
+                    match: /(?<=renderRow:(\i)\.renderRow,)sections:\[\i,/,
+                    // For some reason, adding our sections when no private channels are ready yet
+                    // makes DMs infinitely load. Thus usePinCount returns either a single element
+                    // array with the count, or an empty array. Due to spreading, only in the former
+                    // case will an element be added to the outer array
+                    // Thanks for the fix, Strencher!
+                    replace: "$&...$1.props.pinCount,"
+                },
+                {
+                    // Patch renderSection (renders the header) to set the text to "Pinned DMs" instead of "Direct Messages"
+                    // lookbehind is used to lookup parameter name. We could use arguments[0], but
+                    // if children ever is wrapped in an iife, it will break
+                    match: /children:(\i\.\i\.Messages.DIRECT_MESSAGES)(?<=renderSection=function\((\i)\).+?)/,
+                    replace: "children:$2.section===1?'Pinned DMs':$1"
+                },
+                {
+                    // Patch channel lookup inside renderDM
+                    // channel=channels[channelIds[row]];
+                    match: /(?<=preRenderedChildren,(\i)=)((\i)\[\i\[\i\]\]);/,
+                    // section 1 is us, manually get our own channel
+                    // section === 1 ? getChannel(channels, row) : channels[channelIds[row]];
+                    replace: "arguments[0]===1?$self.getChannel($3,arguments[1]):$2;"
+                },
+                {
+                    // Fix getRowHeight's check for whether this is the DMs section
+                    // section === DMS
+                    match: /===\i.DMS&&0/,
+                    // section -1 === DMS
+                    replace: "-1$&"
+                },
+                {
+                    // Override scrollToChannel to properly account for pinned channels
+                    match: /(?<=else\{\i\+=)(\i)\*\(.+?(?=;)/,
+                    replace: "$self.getScrollOffset(arguments[0],$1,this.props.padding,this.state.preRenderedChildren,$&)"
+                }
+            ]
+        },
+
+        // Fix Alt Up/Down navigation
+        {
+            find: '"mod+alt+right"',
+            replacement: {
+                // channelIds = __OVERLAY__ ? stuff : toArray(getStaticPaths()).concat(toArray(channelIds))
+                match: /(?<=(\i)=__OVERLAY__\?\i:.{0,10})\.concat\((.{0,10})\)/,
+                // ....concat(pins).concat(toArray(channelIds).filter(c => !isPinned(c)))
+                replace: ".concat($self.getSnapshot()).concat($2.filter(c=>!$self.isPinned(c)))"
+            }
+        }
+    ]
+});
diff --git a/src/plugins/pinDms/settings.ts b/src/plugins/pinDms/settings.ts
new file mode 100644
index 0000000..2526c69
--- /dev/null
+++ b/src/plugins/pinDms/settings.ts
@@ -0,0 +1,67 @@
+/*
+ * 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 { Settings, useSettings } from "@api/settings";
+
+export let snapshotArray: string[];
+let snapshot: Set<string> | undefined;
+
+const getArray = () => (Settings.plugins.PinDMs.pinnedDMs || void 0)?.split(",") as string[] | undefined;
+const save = (pins: string[]) => {
+    snapshot = void 0;
+    Settings.plugins.PinDMs.pinnedDMs = pins.join(",");
+};
+const takeSnapshot = () => {
+    snapshotArray = getArray() ?? [];
+    return snapshot = new Set<string>(snapshotArray);
+};
+const requireSnapshot = () => snapshot ?? takeSnapshot();
+
+export function usePinnedDms() {
+    useSettings(["plugins.PinDMs.pinnedDMs"]);
+
+    return requireSnapshot();
+}
+
+export function isPinned(id: string) {
+    return requireSnapshot().has(id);
+}
+
+export function togglePin(id: string) {
+    const snapshot = requireSnapshot();
+    if (!snapshot.delete(id)) {
+        snapshot.add(id);
+    }
+
+    save([...snapshot]);
+}
+
+export function getPinAt(idx: number) {
+    requireSnapshot();
+    return snapshotArray[idx];
+}
+
+export function movePin(id: string, direction: -1 | 1) {
+    const pins = getArray()!;
+    const a = pins.indexOf(id);
+    const b = a + direction;
+
+    [pins[a], pins[b]] = [pins[b], pins[a]];
+
+    save(pins);
+}