From 36d2d617407f250d996591691f2ce636fdb2125a Mon Sep 17 00:00:00 2001
From: Ethan O'Brien <77750390+ethanaobrien@users.noreply.github.com>
Date: Fri, 7 Jul 2023 12:22:20 -0500
Subject: [PATCH] Save file support

---
 data/GameManager.js | 35 ++++++++++++++++++++++++++---------
 data/emulator.js    |  2 +-
 2 files changed, 27 insertions(+), 10 deletions(-)

diff --git a/data/GameManager.js b/data/GameManager.js
index ff614b7..89ca262 100644
--- a/data/GameManager.js
+++ b/data/GameManager.js
@@ -21,7 +21,8 @@ class EJS_GameManager {
             setCurrentDisk: this.Module.cwrap('set_current_disk', 'null', ['number']),
             getSaveFilePath: this.Module.cwrap('save_file_path', 'string', []),
             saveSaveFiles: this.Module.cwrap('cmd_savefiles', '', []),
-            supportsStates: this.Module.cwrap('supports_states', 'number', [])
+            supportsStates: this.Module.cwrap('supports_states', 'number', []),
+            loadSaveFiles: this.Module.cwrap('refresh_save_files', 'null', [])
         }
         this.mkdir("/home");
         this.mkdir("/home/web_user");
@@ -33,7 +34,15 @@ class EJS_GameManager {
         
         this.FS.writeFile("/home/web_user/retroarch/userdata/retroarch.cfg", this.getRetroArchCfg());
         
+        this.FS.mount(IDBFS, {}, '/data/saves');
+        this.FS.syncfs(true, () => {});
+        
         this.initShaders();
+        
+        this.EJS.addEventListener(window, "beforeunload", () => {
+            this.saveSaveFiles();
+            this.FS.syncfs(() => {});
+        })
     }
     mkdir(path) {
         try {
@@ -41,7 +50,15 @@ class EJS_GameManager {
         } catch(e) {}
     }
     getRetroArchCfg() {
-        return "autosave_interval = 10\nsavefile_directory = \"/data/saves\"\n";
+        return "autosave_interval = 60\n" +
+               "screenshot_directory = /\n" +
+               "block_sram_overwrite = false\n" +
+               "video_font_enable = false\n" +
+               "video_scale = 1.0\n" +
+               "video_gpu_screenshot = false\n" +
+               "audio_latency = 96\n" +
+               "video_vsync = true\n" +
+               "savefile_directory = \"/data/saves\"\n";
     }
     initShaders() {
         if (!window.EJS_SHADERS) return;
@@ -217,18 +234,18 @@ class EJS_GameManager {
     }
     saveSaveFiles() {
         this.functions.saveSaveFiles();
+        this.FS.syncfs(false, () => {});
     }
     supportsStates() {
         return !!this.functions.supportsStates();
     }
     getSaveFile() {
-        return new Promise((resolve) => {
-            this.saveSaveFiles();
-            setTimeout(() => {
-                const exists = FS.analyzePath(this.getSaveFilePath()).exists;
-                resolve(exists ? FS.readFile(this.getSaveFilePath()) : null);
-            }, 250);
-        })
+        this.saveSaveFiles();
+        const exists = FS.analyzePath(this.getSaveFilePath()).exists;
+        return (exists ? FS.readFile(this.getSaveFilePath()) : null);
+    }
+    loadSaveFiles() {
+        this.functions.loadSaveFiles();
     }
 }
 
diff --git a/data/emulator.js b/data/emulator.js
index 626c495..ed35942 100644
--- a/data/emulator.js
+++ b/data/emulator.js
@@ -1107,7 +1107,6 @@ class EmulatorJS {
                 const state = new Uint8Array(await file.arrayBuffer());
                 this.gameManager.loadState(state);
             }
-            this.gameManager.saveSaveFiles();
         });
         const controlMenu = addButton("Control Settings", '<svg viewBox="0 0 640 512"><path fill="currentColor" d="M480 96H160C71.6 96 0 167.6 0 256s71.6 160 160 160c44.8 0 85.2-18.4 114.2-48h91.5c29 29.6 69.5 48 114.2 48 88.4 0 160-71.6 160-160S568.4 96 480 96zM256 276c0 6.6-5.4 12-12 12h-52v52c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-52H76c-6.6 0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h52v-52c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v52h52c6.6 0 12 5.4 12 12v40zm184 68c-26.5 0-48-21.5-48-48s21.5-48 48-48 48 21.5 48 48-21.5 48-48 48zm80-80c-26.5 0-48-21.5-48-48s21.5-48 48-48 48 21.5 48 48-21.5 48-48 48z"/></svg>', () => {
             this.controlMenu.style.display = "";
@@ -1144,6 +1143,7 @@ class EmulatorJS {
             }
             if (FS.analyzePath(path).exists) FS.unlink(path);
             FS.writeFile(path, sav);
+            this.gameManager.loadSaveFiles();
         });
         
         const spacer = this.createElement("span");