From c0d998017d027a82ccf5c5f0602cb57ab18bf40c Mon Sep 17 00:00:00 2001
From: Yaya-Cout <yaya.cout@free.fr>
Date: Fri, 17 Feb 2023 19:32:50 +0100
Subject: [PATCH] [apps/main] Add open app option

---
 apps/apps_container.cpp | 11 +++++++++--
 apps/apps_container.h   |  6 ++++++
 apps/main.cpp           | 19 ++++++++++++++++++-
 3 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/apps/apps_container.cpp b/apps/apps_container.cpp
index 7e63f7503..ef2753f20 100644
--- a/apps/apps_container.cpp
+++ b/apps/apps_container.cpp
@@ -37,7 +37,8 @@ AppsContainer::AppsContainer() :
   m_homeSnapshot(),
   m_onBoardingSnapshot(),
   m_hardwareTestSnapshot(),
-  m_usbConnectedSnapshot()
+  m_usbConnectedSnapshot(),
+  m_startAppSnapshot()
 {
   m_emptyBatteryWindow.setFrame(KDRect(0, 0, Ion::Display::Width, Ion::Display::Height), false);
 // #if __EMSCRIPTEN__
@@ -346,7 +347,13 @@ void AppsContainer::run() {
     /* Normal execution. The exception checkpoint must be created before
      * switching to the first app, because the first app might create nodes on
      * the pool. */
-    bool switched = switchTo(initialAppSnapshot());
+    bool switched;
+    if (m_startAppSnapshot != nullptr) {
+      switched = switchTo(m_startAppSnapshot);
+    } else {
+      switched = switchTo(initialAppSnapshot());
+    }
+
     assert(switched);
     (void) switched; // Silence compilation warning about unused variable.
   } else {
diff --git a/apps/apps_container.h b/apps/apps_container.h
index 0d49cdedb..485c5ce3b 100644
--- a/apps/apps_container.h
+++ b/apps/apps_container.h
@@ -59,6 +59,9 @@ public:
   // Ion::StorageDelegate
   void storageDidChangeForRecord(const Ion::Storage::Record record) override;
   void storageIsFull() override;
+  #ifdef EPSILON_GETOPT
+  void setStartApp(App::Snapshot * snapshot) { m_startAppSnapshot = snapshot; }
+  #endif
 protected:
   Home::App::Snapshot * homeAppSnapshot() { return &m_homeSnapshot; }
 private:
@@ -89,6 +92,9 @@ private:
   HardwareTest::App::Snapshot m_hardwareTestSnapshot;
   USB::App::Snapshot m_usbConnectedSnapshot;
   XNTLoop m_XNTLoop;
+  #ifdef EPSILON_GETOPT
+  App::Snapshot * m_startAppSnapshot;
+  #endif
 };
 
 #endif
diff --git a/apps/main.cpp b/apps/main.cpp
index b73b73e77..ec1db8b80 100644
--- a/apps/main.cpp
+++ b/apps/main.cpp
@@ -1,6 +1,7 @@
 #include "apps_container.h"
 #include "global_preferences.h"
 #include <poincare/init.h>
+#include <string.h>
 
 #define DUMMY_MAIN 0
 #if DUMMY_MAIN
@@ -50,13 +51,29 @@ void ion_main(int argc, const char * const argv[]) {
       }
       continue;
     }
+
+    /* Option should be given at run-time:
+     * $ ./epsilon.elf --open-app code
+     */
+    const char * appNames[] = {"home", EPSILON_APPS_NAMES};
+    if (strcmp(argv[i], "--open-app") == 0 && argc > i+1) {
+      const char * requestedAppName = argv[i+1];
+      for (int j = 0; j < AppsContainer::sharedAppsContainer()->numberOfApps(); j++) {
+        App::Snapshot * snapshot = AppsContainer::sharedAppsContainer()->appSnapshotAtIndex(j);
+        if (strcmp(requestedAppName, appNames[j]) == 0) {
+          AppsContainer::sharedAppsContainer()->setStartApp(snapshot);
+          break;
+        }
+      }
+      continue;
+    }
+
     /* Option should be given at run-time:
      * $ ./epsilon.elf --[app_name]-[option] [arguments]
      * For example:
      * $ make -j8 PLATFORM=emscripten EPSILON_APPS=code
      * $ ./epsilon.elf --code-script hello_world.py:print("hello") --code-lock-on-console
      */
-    const char * appNames[] = {"home", EPSILON_APPS_NAMES};
     for (int j = 0; j < AppsContainer::sharedAppsContainer()->numberOfApps(); j++) {
       App::Snapshot * snapshot = AppsContainer::sharedAppsContainer()->appSnapshotAtIndex(j);
       // Compare name in order to find if the firsts chars which are different are NULL and '-'