Refactor track autoselect

Prior hacky approach didn't work for launches w/ args (straight to emulate scene), this fixes it

helpers/mag_types.h

@@ -4,16 +4,6 @@
 #define MAG_DEVELOPER "Zachary Weiss"
 #define MAG_GITHUB "github.com/zacharyweiss/magspoof_flipper"
 
-typedef enum {
-    MagViewSubmenu,
-    MagViewDialogEx,
-    MagViewPopup,
-    MagViewLoading,
-    MagViewWidget,
-    MagViewVariableItemList,
-    MagViewTextInput,
-} MagView;
-
 typedef enum {
     MagReverseStateOff,
     MagReverseStateOn,
@@ -36,6 +26,37 @@ typedef enum {
     MagTxCC1101_868,
 } MagTxState;
 
+typedef enum {
+    MagPinA7,
+    MagPinA6,
+    MagPinA4,
+    MagPinB3,
+    MagPinB2,
+    MagPinC3,
+    MagPinC1,
+    MagPinC0,
+} MagPin;
+
+#define MAG_STATE_DEFAULT_REVERSE MagReverseStateOff
+#define MAG_STATE_DEFAULT_TRACK MagTrackStateOneAndTwo
+#define MAG_STATE_DEFAULT_TX MagTxStateGPIO
+#define MAG_STATE_DEFAULT_US_CLOCK 240
+#define MAG_STATE_DEFAULT_US_INTERPACKET 10
+#define MAG_STATE_DEFAULT_PIN_INPUT MagPinA7
+#define MAG_STATE_DEFAULT_PIN_OUTPUT MagPinA6
+#define MAG_STATE_DEFAULT_PIN_ENABLE MagPinA4
+#define MAG_STATE_DEFAULT_ALLOW_UART false
+
+typedef enum {
+    MagViewSubmenu,
+    MagViewDialogEx,
+    MagViewPopup,
+    MagViewLoading,
+    MagViewWidget,
+    MagViewVariableItemList,
+    MagViewTextInput,
+} MagView;
+
 typedef enum {
     UART_TerminalEventRefreshConsoleOutput = 0,
     UART_TerminalEventStartConsole,

mag.c

@@ -164,6 +164,10 @@ int32_t mag_app(void* p) {
         scene_manager_next_scene(mag->scene_manager, MagSceneStart);
     } else {
         mag_device_load_data(mag->mag_dev, mag->args, true);
+        MagTrackState auto_track = mag_device_autoselect_track_state(mag->mag_dev);
+        if(auto_track) {
+            mag->state.track = auto_track;
+        }
         scene_manager_next_scene(mag->scene_manager, MagSceneEmulate);
     }
 

mag_device.c

@@ -301,6 +301,27 @@ bool mag_device_parse_card_string(MagDevice* mag_dev, FuriString* f_card_str) {
     return true;
 }
 
+MagTrackState mag_device_autoselect_track_state(MagDevice* mag_dev) {
+    // messy code to quickly check which tracks are available for emulation/display
+    bool is_empty_t1 = furi_string_empty(mag_dev->dev_data.track[0].str);
+    bool is_empty_t2 = furi_string_empty(mag_dev->dev_data.track[1].str);
+    bool is_empty_t3 = furi_string_empty(mag_dev->dev_data.track[2].str);
+
+    if(!is_empty_t1 && !is_empty_t2) {
+        return MagTrackStateOneAndTwo;
+    } else if(!is_empty_t1) {
+        return MagTrackStateOne;
+    } else if(!is_empty_t2) {
+        return MagTrackStateTwo;
+    } else if(!is_empty_t3) {
+        return MagTrackStateThree;
+    }
+
+    // if all empty (or something wrong with the above code)
+    // return default value
+    return MAG_STATE_DEFAULT_TRACK;
+}
+
 void mag_device_set_loading_callback(
     MagDevice* mag_dev,
     MagLoadingCallback callback,

mag_device.h

@@ -6,6 +6,7 @@
 #include <dialogs/dialogs.h>
 
 #include "mag_icons.h"
+#include "helpers/mag_types.h"
 
 #include <assets_icons.h>
 
@@ -56,6 +57,8 @@ bool mag_device_delete(MagDevice* mag_dev, bool use_load_path);
 
 bool mag_device_parse_card_string(MagDevice* mag_dev, FuriString* card_str);
 
+MagTrackState mag_device_autoselect_track_state(MagDevice* mag_dev);
+
 void mag_device_set_loading_callback(
     MagDevice* mag_dev,
     MagLoadingCallback callback,

mag_state.h

@@ -18,27 +18,6 @@
 #define MAG_STATE_DIR STORAGE_APP_DATA_PATH_PREFIX
 #define MAG_STATE_PATH MAG_STATE_DIR "/mag_state.txt"
 
-typedef enum {
-    MagPinA7,
-    MagPinA6,
-    MagPinA4,
-    MagPinB3,
-    MagPinB2,
-    MagPinC3,
-    MagPinC1,
-    MagPinC0,
-} MagPin;
-
-#define MAG_STATE_DEFAULT_REVERSE MagReverseStateOff
-#define MAG_STATE_DEFAULT_TRACK MagTrackStateOneAndTwo
-#define MAG_STATE_DEFAULT_TX MagTxStateGPIO
-#define MAG_STATE_DEFAULT_US_CLOCK 240
-#define MAG_STATE_DEFAULT_US_INTERPACKET 10
-#define MAG_STATE_DEFAULT_PIN_INPUT MagPinA7
-#define MAG_STATE_DEFAULT_PIN_OUTPUT MagPinA6
-#define MAG_STATE_DEFAULT_PIN_ENABLE MagPinA4
-#define MAG_STATE_DEFAULT_ALLOW_UART false
-
 typedef struct {
     MagTxState tx;
     MagTrackState track;

scenes/mag_scene_file_select.c

@@ -5,6 +5,10 @@ void mag_scene_file_select_on_enter(void* context) {
     Mag* mag = context;
     mag_device_set_loading_callback(mag->mag_dev, mag_show_loading_popup, mag);
     if(mag_file_select(mag->mag_dev)) {
+        MagTrackState auto_track = mag_device_autoselect_track_state(mag->mag_dev);
+        if(auto_track) {
+            mag->state.track = auto_track;
+        }
         scene_manager_next_scene(mag->scene_manager, MagSceneSavedMenu);
     } else {
         scene_manager_search_and_switch_to_previous_scene(mag->scene_manager, MagSceneStart);