From 47433733d0ad334e5f074d032bf07558b10bd3d2 Mon Sep 17 00:00:00 2001
From: lenafx <jaiet7@gmail.com>
Date: Wed, 31 Dec 2025 14:31:20 +0100
Subject: [PATCH] added backend for open mpv in electron version

---
 desktop/src/api/anime/anime.controller.ts | 159 ++++++++++++++++++++++
 desktop/src/api/anime/anime.routes.ts     |   1 +
 2 files changed, 160 insertions(+)

diff --git a/desktop/src/api/anime/anime.controller.ts b/desktop/src/api/anime/anime.controller.ts
index b6bd693..ef6ba03 100644
--- a/desktop/src/api/anime/anime.controller.ts
+++ b/desktop/src/api/anime/anime.controller.ts
@@ -2,6 +2,11 @@ import {FastifyReply, FastifyRequest} from 'fastify';
 import * as animeService from './anime.service';
 import {getExtension} from '../../shared/extensions';
 import {Anime, AnimeRequest, SearchRequest, WatchStreamRequest} from '../types';
+import {spawn} from "node:child_process";
+import net from 'net';
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
 
 export async function getAnime(req: AnimeRequest, reply: FastifyReply) {
     try {
@@ -104,4 +109,158 @@ export async function getWatchStream(req: WatchStreamRequest, reply: FastifyRepl
         const error = err as Error;
         return { error: error.message };
     }
+}
+
+export async function openInMPV(req: any, reply: any) {
+    try {
+        const { title, video, subtitles = [], chapters = [] } = req.body;
+        if (!video?.url) return { error: 'Missing video url' };
+
+        const proxyBase = 'http://localhost:54322/api/proxy';
+        const mediaTitle = title || 'Anime';
+
+        const proxyVideo =
+            `${proxyBase}?url=${encodeURIComponent(video.url)}` +
+            `&referer=${encodeURIComponent(video.headers?.Referer ?? '')}` +
+            `&origin=${encodeURIComponent(video.headers?.Origin ?? '')}` +
+            `&userAgent=${encodeURIComponent(video.headers?.['User-Agent'] ?? '')}`;
+
+        const proxySubs = subtitles.map((s: any) =>
+            `${proxyBase}?url=${encodeURIComponent(s.url)}` +
+            `&referer=${encodeURIComponent(video.headers?.Referer ?? '')}` +
+            `&origin=${encodeURIComponent(video.headers?.Origin ?? '')}` +
+            `&userAgent=${encodeURIComponent(video.headers?.['User-Agent'] ?? '')}`
+        );
+
+        const pipe = `\\\\.\\pipe\\mpv-${Date.now()}`;
+
+        let chaptersArg: string[] = [];
+        if (chapters.length) {
+
+            chapters.sort((a: any, b: any) => a.interval.startTime - b.interval.startTime);
+
+            const lines = [';FFMETADATA1'];
+
+            for (let i = 0; i < chapters.length; i++) {
+                const c = chapters[i];
+                const start = Math.floor(c.interval.startTime * 1000);
+                const end = Math.floor(c.interval.endTime * 1000);
+
+                lines.push(
+                    `[CHAPTER]`,
+                    `TIMEBASE=1/1000`,
+                    `START=${start}`,
+                    `END=${end}`,
+                    `title=${c.skipType.toUpperCase()}`
+                );
+
+                if (i < chapters.length - 1) {
+                    const nextStart = Math.floor(chapters[i + 1].interval.startTime * 1000);
+                    if (nextStart - end > 1000) {
+                        lines.push(
+                            `[CHAPTER]`,
+                            `TIMEBASE=1/1000`,
+                            `START=${end}`,
+                            `END=${nextStart}`,
+                            `title=Episode`
+                        );
+                    }
+                } else {
+
+                    lines.push(
+                        `[CHAPTER]`,
+                        `TIMEBASE=1/1000`,
+                        `START=${end}`,
+                        `title=Episode`
+                    );
+                }
+            }
+
+            const chaptersFile = path.join(
+                os.tmpdir(),
+                `mpv-chapters-${Date.now()}.txt`
+            );
+
+            fs.writeFileSync(chaptersFile, lines.join('\n'));
+            chaptersArg = [`--chapters-file=${chaptersFile}`];
+        }
+
+        spawn(
+            'D:\\mpv\\mpv.exe',
+            [
+                '--force-window=yes',
+                '--idle=yes',
+                '--keep-open=yes',
+                '--no-terminal',
+                '--hwdec=auto',
+                `--force-media-title=Loading...`,
+
+                `--input-ipc-server=${pipe}`,
+                ...chaptersArg
+            ],
+            {
+                stdio: 'ignore',
+                windowsHide: true,
+                detached: true
+            }
+        ).unref();
+
+        await new Promise(r => setTimeout(r, 300));
+        const socket = net.connect(pipe);
+
+        let titleChanged = false;
+
+        const safetyTimeout = setTimeout(() => {
+            if (!socket.destroyed) socket.end();
+        }, 15000);
+
+        socket.on('data', (data) => {
+            const chunks = data.toString().split('\n');
+            for (const chunk of chunks) {
+                if (!chunk.trim()) continue;
+                try {
+                    const json = JSON.parse(chunk);
+
+                    if (
+                        !titleChanged &&
+                        json.event === 'property-change' &&
+                        json.name === 'duration' &&
+                        typeof json.data === 'number'
+                    ) {
+
+                        socket.write(JSON.stringify({
+                            command: ['set_property', 'force-media-title', mediaTitle]
+                        }) + '\n');
+
+                        titleChanged = true;
+                        clearTimeout(safetyTimeout);
+
+                        setTimeout(() => {
+                            if (!socket.destroyed) socket.end();
+                        }, 500);
+                    }
+                } catch (err) {
+
+                }
+            }
+        });
+
+        socket.write(JSON.stringify({
+            command: ['observe_property', 1, 'duration']
+        }) + '\n');
+
+        socket.write(JSON.stringify({
+            command: ['loadfile', proxyVideo, 'replace']
+        }) + '\n');
+
+        for (const sub of proxySubs) {
+            socket.write(JSON.stringify({
+                command: ['sub-add', sub, 'auto']
+            }) + '\n');
+        }
+
+        return { success: true };
+    } catch (e) {
+        return { error: (e as Error).message };
+    }
 }
\ No newline at end of file
diff --git a/desktop/src/api/anime/anime.routes.ts b/desktop/src/api/anime/anime.routes.ts
index f23976d..38dc810 100644
--- a/desktop/src/api/anime/anime.routes.ts
+++ b/desktop/src/api/anime/anime.routes.ts
@@ -9,6 +9,7 @@ async function animeRoutes(fastify: FastifyInstance) {
     fastify.get('/search', controller.search);
     fastify.get('/search/:extension', controller.searchInExtension);
     fastify.get('/watch/stream', controller.getWatchStream);
+    fastify.post('/watch/mpv', controller.openInMPV);
 }
 
 export default animeRoutes;
\ No newline at end of file