'init'

app/providers/DialogProvider/useReplyMessages.ts

@@ -0,0 +1,128 @@
+import { useContext, useEffect } from "react";
+import { useMemory } from "../MemoryProvider/useMemory";
+import { Attachment } from "../ProtocolProvider/protocol/packets/packet.message";
+import { DialogContext } from "./DialogProvider";
+
+export interface Reply {
+    publicKey: string;
+    messages: MessageReply[];
+    /**
+     * Флаг, указывающи, что выбранные сообщения уже перемещены в 
+     * поле ввода диалога
+     */
+    inDialogInput?: string;
+}
+
+export interface MessageReply {
+    timestamp: number;
+    publicKey: string;
+    message: string;
+    attachments: Attachment[];
+    message_id: string;
+}
+
+export function useReplyMessages() {
+    const [replyMessages, setReplyMessages] = useMemory<Reply>("replyMessages", {
+        publicKey: "",
+        messages: [],
+        inDialogInput: ""
+    }, true);
+    const context = useContext(DialogContext);
+    if(!context){
+        throw new Error("useReplyMessages must be used within a DialogProvider");
+    }
+
+    const {dialog} = context;
+
+    const selectMessage = (message : MessageReply) => {
+        console.info(message);
+        if(replyMessages.publicKey != dialog){
+            /**
+             * Сброс выбора сообщений из другого диалога
+             */
+            setReplyMessages({
+                publicKey: dialog,
+                messages: [message]
+            });
+            return;
+        }
+        if(replyMessages.messages.find(m => m.timestamp == message.timestamp)){
+            /**
+             * Уже выбранное сообщение
+             */
+            return;
+        }
+        replyMessages.messages.push(message);
+        const sortedByTime = replyMessages.messages.sort((a, b) => a.timestamp - b.timestamp);
+ 
+        setReplyMessages({
+            publicKey: dialog,
+            messages: sortedByTime
+        });
+    }
+
+    const deselectMessage = (message : MessageReply) => {
+        const filtered = replyMessages.messages.filter(m => m.timestamp != message.timestamp);
+        setReplyMessages({
+            publicKey: dialog,
+            messages: filtered
+        });
+    }
+
+    const deselectAllMessages = () => {
+        setReplyMessages({
+            publicKey: "",
+            messages: []
+        });
+    }
+
+    const isSelectionStarted = () => {
+        if(replyMessages.inDialogInput){
+            return false;
+        }
+        return replyMessages.publicKey == dialog && replyMessages.messages.length > 0;
+    }
+
+    const isSelectionInCurrentDialog = () => {
+        if(replyMessages.inDialogInput){
+            return false;
+        }
+        return replyMessages.publicKey == dialog;
+    }
+
+    const isMessageSelected = (message : MessageReply) => {
+        if(replyMessages.publicKey != dialog ||
+            replyMessages.inDialogInput
+        ){
+            return false;
+        }
+        return replyMessages.messages.find(m => m.timestamp == message.timestamp) != undefined;
+    }
+
+    const translateMessagesToDialogInput = (publicKey: string) => {
+        setReplyMessages((prev) => ({
+            ...prev,
+            inDialogInput: publicKey
+        }));
+    }
+
+    useEffect(() => {
+        if(replyMessages.publicKey != dialog 
+            && replyMessages.inDialogInput != dialog){
+            /**
+             * Сброс выбора сообщений при смене диалога
+             */
+            deselectAllMessages();
+        }
+    }, [dialog]);
+
+    return {replyMessages, 
+            translateMessagesToDialogInput, 
+            isSelectionInCurrentDialog, 
+            isSelectionStarted, 
+            selectMessage, 
+            deselectMessage, 
+            dialog,
+            deselectAllMessages, 
+            isMessageSelected}
+}