Allow wasm fetch patchstorage thigns, set system factory template

Signed-off-by: falkTX <falktx@falktx.com>

include/linux-compat/ghc/filesystem.hpp

@@ -17,6 +17,9 @@
 
 #pragma once
 
+#ifndef __EMSCRIPTEN__
 #define GHC_OS_DETECTED
 #define GHC_OS_LINUX
+#endif
+
 #include_next <ghc/filesystem.hpp>

src/CardinalCommon.cpp

@@ -100,6 +100,10 @@ std::string getSpecialPath(const SpecialPath type)
 }
 #endif
 
+#ifdef DISTRHO_OS_WASM
+char* patchStorageSlug = nullptr;
+#endif
+
 std::string homeDir()
 {
 # ifdef ARCH_WIN

src/CardinalCommon.hpp

@@ -25,6 +25,10 @@
 # define REMOTE_HOST_PORT "2228"
 #endif
 
+#ifdef DISTRHO_OS_WASM
+# define CARDINAL_IMPORTED_TEMPLATE_FILENAME "/imported.vcv"
+#endif
+
 extern const std::string CARDINAL_VERSION;
 
 namespace rack {
@@ -53,6 +57,10 @@ enum SpecialPath {
 std::string getSpecialPath(SpecialPath type);
 #endif
 
+#ifdef DISTRHO_OS_WASM
+extern char* patchStorageSlug;
+#endif
+
 } // namespace rack
 
 namespace patchUtils {

src/CardinalPlugin.cpp

@@ -34,24 +34,38 @@
 # undef DEBUG
 #endif
 
-#ifdef HAVE_LIBLO
-# ifdef HEADLESS
-#  include <lo/lo.h>
-#  include "extra/Thread.hpp"
-# endif
-# include "CardinalCommon.hpp"
+#if defined(HAVE_LIBLO) && defined(HEADLESS)
+# include <lo/lo.h>
+# include "extra/Thread.hpp"
 #endif
 
 #include <list>
 
+#include "CardinalCommon.hpp"
 #include "DistrhoPluginUtils.hpp"
 #include "PluginContext.hpp"
 #include "extra/Base64.hpp"
 
-#ifndef DISTRHO_OS_WASM
+#ifdef DISTRHO_OS_WASM
+# include <emscripten/emscripten.h>
+#else
 # include "extra/SharedResourcePointer.hpp"
 #endif
 
+#if CARDINAL_VARIANT_FX
+# define CARDINAL_FACTORY_TEMPLATE_NAME "template-fx.vcv"
+#elif CARDINAL_VARIANT_SYNTH
+# define CARDINAL_FACTORY_TEMPLATE_NAME "template-synth.vcv"
+#else
+# define CARDINAL_FACTORY_TEMPLATE_NAME "template.vcv"
+#endif
+
+#ifdef DISTRHO_OS_WASM
+# define CARDINAL_TEMPLATE_NAME "template-wasm.vcv"
+#else
+# define CARDINAL_TEMPLATE_NAME CARDINAL_FACTORY_TEMPLATE_NAME
+#endif
+
 static const constexpr uint kCardinalStateBaseCount = 3; // patch, screenshot, comment
 
 #ifndef HEADLESS
@@ -63,14 +77,6 @@ static const constexpr uint kCardinalStateCount = kCardinalStateBaseCount + 2; /
 static const constexpr uint kCardinalStateCount = kCardinalStateBaseCount;
 #endif
 
-#if CARDINAL_VARIANT_FX
-# define CARDINAL_TEMPLATE_NAME "template-fx.vcv"
-#elif CARDINAL_VARIANT_SYNTH
-# define CARDINAL_TEMPLATE_NAME "template-synth.vcv"
-#else
-# define CARDINAL_TEMPLATE_NAME "template.vcv"
-#endif
-
 namespace rack {
 namespace engine {
     void Engine_setAboutToClose(Engine*);
@@ -97,6 +103,21 @@ bool d_isDiffHigherThanLimit(const T& v1, const T& v2, const T& limit)
 
 // -----------------------------------------------------------------------------------------------------------
 
+#ifdef DISTRHO_OS_WASM
+EM_JS(char*, getPatchStorageSlug, (), {
+    var searchParams = new URLSearchParams(window.location.search);
+    var patch = searchParams.get('patchstorage');
+    if (!patch)
+      return null;
+    var length = lengthBytesUTF8(patch) + 1;
+    var str = _malloc(length);
+    stringToUTF8(patch, str, length);
+    return str;
+});
+#endif
+
+// -----------------------------------------------------------------------------------------------------------
+
 struct Initializer
 #if defined(HAVE_LIBLO) && defined(HEADLESS)
 : public Thread
@@ -107,6 +128,7 @@ struct Initializer
     CardinalBasePlugin* oscPlugin = nullptr;
 #endif
     std::string templatePath;
+    std::string factoryTemplatePath;
 
     Initializer(const CardinalBasePlugin* const plugin)
     {
@@ -158,6 +180,7 @@ struct Initializer
                     asset::bundlePath = system::join(resourcePath, "PluginManifests");
                     asset::systemDir = resourcePath;
                     templatePath = system::join(asset::systemDir, CARDINAL_TEMPLATE_NAME);
+                    factoryTemplatePath = system::join(asset::systemDir, CARDINAL_FACTORY_TEMPLATE_NAME);
                 }
             }
 
@@ -170,6 +193,7 @@ struct Initializer
                 if (system::exists(system::join(asset::systemDir, "res")))
                 {
                     templatePath = CARDINAL_PLUGIN_SOURCE_DIR DISTRHO_OS_SEP_STR CARDINAL_TEMPLATE_NAME;
+                    factoryTemplatePath = CARDINAL_PLUGIN_SOURCE_DIR DISTRHO_OS_SEP_STR CARDINAL_FACTORY_TEMPLATE_NAME;
                 }
                 // If source code dir does not exist use install target prefix as system dir
                 else
@@ -187,17 +211,20 @@ struct Initializer
                     asset::systemDir = CARDINAL_PLUGIN_PREFIX "/share/cardinal";
                    #endif
 
-                    if (! asset::systemDir.empty())
-                    {
-                        asset::bundlePath = system::join(asset::systemDir, "PluginManifests");
-                        templatePath = system::join(asset::systemDir, CARDINAL_TEMPLATE_NAME);
-                    }
+                    asset::bundlePath = system::join(asset::systemDir, "PluginManifests");
+                    templatePath = system::join(asset::systemDir, CARDINAL_TEMPLATE_NAME);
+                    factoryTemplatePath = system::join(asset::systemDir, CARDINAL_FACTORY_TEMPLATE_NAME);
                 }
             }
 
             asset::userDir = asset::systemDir;
         }
 
+       #ifdef DISTRHO_OS_WASM
+        if ((patchStorageSlug = getPatchStorageSlug()) != nullptr)
+            templatePath = CARDINAL_IMPORTED_TEMPLATE_FILENAME;
+       #endif
+
         // Log environment
         INFO("%s %s v%s", APP_NAME.c_str(), APP_EDITION.c_str(), APP_VERSION.c_str());
         INFO("%s", system::getOperatingSystemInfo().c_str());
@@ -206,6 +233,7 @@ struct Initializer
         INFO("System directory: %s", asset::systemDir.c_str());
         INFO("User directory: %s", asset::userDir.c_str());
         INFO("Template patch: %s", templatePath.c_str());
+        INFO("System template patch: %s", factoryTemplatePath.c_str());
 
         // Report to user if something is wrong with the installation
         if (asset::systemDir.empty())
@@ -564,6 +592,7 @@ public:
         context->patch = new rack::patch::Manager;
         context->patch->autosavePath = fAutosavePath;
         context->patch->templatePath = fInitializer->templatePath;
+        context->patch->factoryTemplatePath = fInitializer->factoryTemplatePath;
 
         context->event = new rack::widget::EventState;
         context->scene = new rack::app::Scene;
@@ -572,28 +601,33 @@ public:
         if (! isDummyInstance())
             context->window = new rack::window::Window;
 
-        context->patch->loadTemplate();
-        context->scene->rackScroll->reset();
+       #ifdef DISTRHO_OS_WASM
+        if (rack::patchStorageSlug == nullptr)
+       #endif
+        {
+            context->patch->loadTemplate();
+            context->scene->rackScroll->reset();
+        }
 
-#if defined(HAVE_LIBLO) && defined(HEADLESS)
+       #if defined(HAVE_LIBLO) && defined(HEADLESS)
         fInitializer->oscPlugin = this;
-#endif
+       #endif
     }
 
     ~CardinalPlugin() override
     {
-#if defined(HAVE_LIBLO) && defined(HEADLESS)
+       #if defined(HAVE_LIBLO) && defined(HEADLESS)
         fInitializer->oscPlugin = nullptr;
-#endif
+       #endif
 
         {
             const ScopedContext sc(this);
             context->patch->clear();
 
             // do a little dance to prevent context scene deletion from saving to temp dir
-#ifndef HEADLESS
+           #ifndef HEADLESS
             const ScopedValueSetter<bool> svs(rack::settings::headless, true);
-#endif
+           #endif
             Engine_setAboutToClose(context->engine);
             delete context;
         }

src/CardinalUI.cpp

@@ -31,11 +31,12 @@
 #include <window/Window.hpp>
 
 #ifdef DISTRHO_OS_WASM
-#include <ui/Button.hpp>
-#include <ui/Label.hpp>
-#include <ui/MenuOverlay.hpp>
-#include <ui/SequentialLayout.hpp>
-#include "CardinalCommon.hpp"
+# include <ui/Button.hpp>
+# include <ui/Label.hpp>
+# include <ui/MenuOverlay.hpp>
+# include <ui/SequentialLayout.hpp>
+# include "CardinalCommon.hpp"
+# include <emscripten/emscripten.h>
 #endif
 
 #ifdef NDEBUG
@@ -189,6 +190,104 @@ struct WasmWelcomeDialog : rack::widget::OpaqueWidget
         Widget::draw(args);
     }
 };
+
+struct WasmPatchStorageLoadingDialog : rack::widget::OpaqueWidget
+{
+    static const constexpr float margin = 10;
+
+    rack::ui::MenuOverlay* overlay;
+
+    WasmPatchStorageLoadingDialog()
+    {
+        using rack::ui::Label;
+        using rack::ui::MenuOverlay;
+        using rack::ui::SequentialLayout;
+
+        box.size = rack::math::Vec(300, 50);
+
+        SequentialLayout* const layout = new SequentialLayout;
+        layout->box.pos = rack::math::Vec(0, 0);
+        layout->box.size = box.size;
+        layout->orientation = SequentialLayout::VERTICAL_ORIENTATION;
+        layout->margin = rack::math::Vec(margin, margin);
+        layout->spacing = rack::math::Vec(margin, margin);
+        layout->wrap = false;
+        addChild(layout);
+
+        Label* const label = new Label;
+        label->box.size.x = box.size.x - 2*margin;
+        label->box.size.y = box.size.y - 2*margin - 40;
+        label->fontSize = 16;
+        label->text = "Load patch from PatchStorage...\n";
+        layout->addChild(label);
+
+        overlay = new MenuOverlay;
+        overlay->bgColor = nvgRGBAf(0, 0, 0, 0.33);
+        overlay->addChild(this);
+        APP->scene->addChild(overlay);
+    }
+
+    void step() override
+    {
+        OpaqueWidget::step();
+        box.pos = parent->box.size.minus(box.size).div(2).round();
+    }
+
+    void draw(const DrawArgs& args) override
+    {
+        bndMenuBackground(args.vg, 0.0, 0.0, box.size.x, box.size.y, 0);
+        Widget::draw(args);
+    }
+};
+
+static void downloadPatchStorageFailed(const char* const filename)
+{
+    d_stdout("downloadPatchStorageFailed %s", filename);
+    CardinalPluginContext* const context = static_cast<CardinalPluginContext*>(APP);
+    CardinalBaseUI* const ui = static_cast<CardinalBaseUI*>(context->ui);
+
+    if (ui->psDialog != nullptr)
+    {
+        ui->psDialog->overlay->requestDelete();
+        asyncDialog::create("Failed to fetch patch from PatchStorage");
+    }
+
+    using namespace rack;
+    context->patch->templatePath = system::join(asset::systemDir, "template-synth.vcv"); // FIXME
+    context->patch->loadTemplate();
+    context->scene->rackScroll->reset();
+}
+
+static void downloadPatchStorageSucceeded(const char* const filename)
+{
+    d_stdout("downloadPatchStorageSucceeded %s | %s", filename, APP->patch->templatePath.c_str());
+    CardinalPluginContext* const context = static_cast<CardinalPluginContext*>(APP);
+    CardinalBaseUI* const ui = static_cast<CardinalBaseUI*>(context->ui);
+
+    ui->psDialog->overlay->requestDelete();
+    ui->psDialog = nullptr;
+
+    if (FILE* f = fopen(filename, "r"))
+    {
+        uint8_t buf[8] = {};
+        fread(buf, 8, 1, f);
+        d_stdout("read patch %x %x %x %x %x %x %x %x",
+                buf[0],buf[1],buf[2],buf[3],buf[4],buf[5],buf[6],buf[7]);
+        fclose(f);
+    }
+
+    try {
+        context->patch->load(CARDINAL_IMPORTED_TEMPLATE_FILENAME);
+    } catch (rack::Exception& e) {
+        const std::string message = rack::string::f("Could not load patch: %s", e.what());
+        asyncDialog::create(message.c_str());
+        return;
+    }
+
+    context->scene->rackScroll->reset();
+    context->patch->path = "";
+    context->history->setSaved();
+}
 #endif
 
 // -----------------------------------------------------------------------------------------------------------
@@ -288,7 +387,21 @@ public:
         }
 
        #ifdef DISTRHO_OS_WASM
-        new WasmWelcomeDialog();
+        if (rack::patchStorageSlug != nullptr)
+        {
+            std::string url("/patchstorage.php?slug=");
+            url += rack::patchStorageSlug;
+            std::free(rack::patchStorageSlug);
+            rack::patchStorageSlug = nullptr;
+
+            psDialog = new WasmPatchStorageLoadingDialog();
+            emscripten_async_wget(url.c_str(), context->patch->templatePath.c_str(),
+                                  downloadPatchStorageSucceeded, downloadPatchStorageFailed);
+        }
+        else
+        {
+            new WasmWelcomeDialog();
+        }
        #endif
 
         context->window->step();

src/PluginContext.hpp

@@ -122,10 +122,6 @@ void handleHostParameterDrag(const CardinalPluginContext* pcontext, uint index,
 
 // -----------------------------------------------------------------------------------------------------------
 
-struct CardinalAudioDevice;
-struct CardinalMidiInputDevice;
-struct CardinalMidiOutputDevice;
-
 CardinalPluginContext* getRackContextFromPlugin(void* ptr);
 
 class CardinalBasePlugin : public Plugin {
@@ -139,12 +135,18 @@ public:
 };
 
 #ifndef HEADLESS
+struct WasmPatchStorageLoadingDialog;
+
 class CardinalBaseUI : public UI {
 public:
     CardinalPluginContext* const context;
     bool saving;
     bool savingUncompressed;
 
+   #ifdef DISTRHO_OS_WASM
+    WasmPatchStorageLoadingDialog* psDialog;
+   #endif
+
     // for 3rd party modules
     std::function<void(char* path)> filebrowseraction;
     FileBrowserHandle filebrowserhandle;
@@ -154,6 +156,9 @@ public:
           context(getRackContextFromPlugin(getPluginInstancePointer())),
           saving(false),
           savingUncompressed(false),
+         #ifdef DISTRHO_OS_WASM
+          psDialog(nullptr),
+         #endif
           filebrowseraction(),
           filebrowserhandle(nullptr)
     {

src/emscripten/patchstorage.php

@@ -0,0 +1,43 @@
+<?php
+$slug = filter_input(INPUT_GET, 'slug', FILTER_SANITIZE_ENCODED);
+if (!$slug) { http_response_code(404); die(); }
+
+$api = 'https://patchstorage.com/api/alpha';
+
+$search = file_get_contents($api.'/patches?platform=7834&slug='.$slug);
+if (!$search) { http_response_code(404); die(); }
+
+$searchJ = json_decode($search, true);
+if (!$searchJ) { http_response_code(404); die(); }
+if (!$searchJ[0]) { http_response_code(404); die(); }
+
+$patchId = $searchJ[0]['id'];
+if (!$patchId) { http_response_code(404); die(); }
+
+$patchDetails = file_get_contents($api.'/patches/'.$patchId);
+if (!$patchDetails) { http_response_code(404); die(); }
+
+$patchDetailsJ = json_decode($patchDetails, true);
+if (!$patchDetailsJ) { http_response_code(404); die(); }
+
+$patchFiles = $patchDetailsJ['files'];
+if (!$patchFiles) { http_response_code(404); die(); }
+
+$patchFileDetails = $patchFiles[0];
+if (!$patchFileDetails) { http_response_code(404); die(); }
+if (!$patchFileDetails['filename']) { http_response_code(404); die(); }
+if (!$patchFileDetails['url']) { http_response_code(404); die(); }
+
+$contents = file_get_contents($patchFileDetails['url']);
+if (!$contents) { http_response_code(404); die(); }
+
+header('Content-Description: File Transfer');
+header('Content-Type: application/octet-stream');
+header('Content-Disposition: attachment; filename="'.$patchFileDetails['filename'].'"');
+header('Expires: 0');
+header('Cache-Control: must-revalidate');
+header('Pragma: public');
+header('Content-Length: ' . strlen($contents));
+flush();
+die($contents);
+?>