Add Redux and reducers.

Load i18n files and add dayjs.

src/redux/reducers/unreads.ts

@@ -0,0 +1,68 @@
+import { Sync } from "revolt.js/dist/api/objects";
+
+export interface Unreads {
+    [key: string]: Partial<Omit<Sync.ChannelUnread, '_id'>>;
+}
+
+export type UnreadsAction =
+    | { type: undefined }
+    | {
+        type: "UNREADS_MARK_READ";
+        channel: string;
+        message: string;
+        request: boolean;
+      }
+    | {
+        type: "UNREADS_SET";
+        unreads: Sync.ChannelUnread[];
+    }
+    | {
+        type: "UNREADS_MENTION";
+        channel: string;
+        message: string;
+    }
+    | {
+        type: "RESET";
+      };
+
+export function unreads(state = {}, action: UnreadsAction): Unreads {
+    switch (action.type) {
+        case "UNREADS_MARK_READ":
+            if (action.request) {
+                // client.req('PUT', `/channels/${action.channel}/ack/${action.message}` as '/channels/id/ack/id');
+            }
+
+            return {
+                ...state,
+                [action.channel]: {
+                    last_id: action.message
+                }
+            };
+        case "UNREADS_SET":
+            {
+                const obj: Unreads = {};
+                for (const entry of action.unreads) {
+                    const { _id, ...v } = entry;
+                    obj[_id.channel] = v;
+                }
+
+                return obj;
+            }
+        case "UNREADS_MENTION":
+            {
+                const obj = (state as any)[action.channel];
+
+                return {
+                    ...state,
+                    [action.channel]: {
+                        ...obj,
+                        mentions: [ ...(obj?.mentions ?? []), action.message ]
+                    }
+                }
+            }
+        case "RESET":
+            return {};
+        default:
+            return state;
+    }
+}