From 4270a51de7766cf952842afbfc32fb4656695401 Mon Sep 17 00:00:00 2001
From: Robin Jones <networkfusion@users.noreply.github.com>
Date: Mon, 18 Mar 2024 00:15:47 +0000
Subject: [PATCH] Add handler

---
 Makefile                               |  3 +-
 src/menu/cpak_handler.c                | 40 ++++++++++++++++++++++++++
 src/menu/cpak_handler.h                | 15 ++++++++++
 src/menu/views/joypad_controller_pak.c | 32 +++++++++++++++------
 4 files changed, 80 insertions(+), 10 deletions(-)
 create mode 100644 src/menu/cpak_handler.c
 create mode 100644 src/menu/cpak_handler.h

diff --git a/Makefile b/Makefile
index 60ac532d..93d559ab 100644
--- a/Makefile
+++ b/Makefile
@@ -39,6 +39,7 @@ SRCS = \
 	menu/components/common.c \
 	menu/components/context_menu.c \
 	menu/components/file_list.c \
+	menu/cpak_handler.c \
 	menu/disk_info.c \
 	menu/fonts.c \
 	menu/hdmi.c \
@@ -56,6 +57,7 @@ SRCS = \
 	menu/views/fault.c \
 	menu/views/file_info.c \
 	menu/views/image_viewer.c \
+	menu/views/joypad_controller_pak.c \
 	menu/views/text_viewer.c \
 	menu/views/load_disk.c \
 	menu/views/load_emulator.c \
@@ -66,7 +68,6 @@ SRCS = \
 	menu/views/settings_editor.c \
 	menu/views/rtc.c \
 	menu/views/flashcart_info.c \
-	menu/views/joypad_controller_pak.c \
 	utils/fs.c
 
 FONTS = \
diff --git a/src/menu/cpak_handler.c b/src/menu/cpak_handler.c
new file mode 100644
index 00000000..4213cc9e
--- /dev/null
+++ b/src/menu/cpak_handler.c
@@ -0,0 +1,40 @@
+#include <libdragon.h>
+
+#include <fatfs/ff.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+#include "../utils/fs.h"
+#include "cpak_handler.h"
+
+uint8_t pak_data[128 * MEMPAK_BLOCK_SIZE];
+
+int clone_pak_content_to_file(char *path, uint8_t jpad_port) {
+    // get the pak content
+    int err;
+    for (int i = 0; i < 128; i++) {
+        err = read_mempak_sector(jpad_port, i, &pak_data[i * MEMPAK_BLOCK_SIZE]);
+        if (err) {
+            // there was an issue reading the content (-1 if the sector was out of bounds or sector_data was null
+            // -2 if there was an error reading part of a sector
+            return err;
+        }
+    }
+
+    FIL fil;
+    UINT bytes_written;
+    if (f_open(&fil, strip_sd_prefix(path), FA_WRITE | FA_CREATE_ALWAYS) != FR_OK) {
+        return 1;
+    }
+
+    FRESULT fw_err = f_write(&fil, &pak_data, sizeof(pak_data), &bytes_written);
+
+    f_close(&fil);
+
+    if (fw_err) {
+        return fw_err;
+    }
+    else {
+        return 0;
+    }
+}
diff --git a/src/menu/cpak_handler.h b/src/menu/cpak_handler.h
new file mode 100644
index 00000000..31a7653a
--- /dev/null
+++ b/src/menu/cpak_handler.h
@@ -0,0 +1,15 @@
+/**
+ * @file cpak_handler.h
+ * @brief ControllerPak handler
+ * @ingroup menu
+ */
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifndef CPAK_HANDLER_H__
+#define CPAK_HANDLER_H__
+
+int clone_pak_content_to_file(char *path, uint8_t jpad_port);
+
+#endif
diff --git a/src/menu/views/joypad_controller_pak.c b/src/menu/views/joypad_controller_pak.c
index 350134b1..40fd8755 100644
--- a/src/menu/views/joypad_controller_pak.c
+++ b/src/menu/views/joypad_controller_pak.c
@@ -1,4 +1,5 @@
 #include "views.h"
+#include "../cpak_handler.h"
 
 static int accessory_is_cpak[4];
 
@@ -10,7 +11,11 @@ static void process (menu_t *menu) {
     }
 
     if (menu->actions.enter) {
-        // do something?! 
+        // TODO: handle all ports
+        if (accessory_is_cpak[0]) {
+            // TODO: preferably with the time added to the filename so it does not overwrite the existing one!
+            clone_pak_content_to_file("sd://cpak/cpak_backup.mpk", 0);
+        }
     }
 
     if (menu->actions.back) {
@@ -32,21 +37,30 @@ static void draw (menu_t *menu, surface_t *d) {
         "\n"
     );
 
-    // Backup to SD, restore from SD, and/or Repair functions.
+    // TODO: Backup from other ports, restore from SD, and/or Repair functions.
     // Bonus would be to handle individual per game entries!
     component_main_text_draw(
         ALIGN_LEFT, VALIGN_TOP,
         "\n"
         "\n"
-        "Not yet implemented!\n"
+        "Clone Controller Pak (1) to SD Card.\n"
+        "If it is available.\n"
     );
 
-
-    component_actions_bar_text_draw(
-        ALIGN_LEFT, VALIGN_TOP,
-        "\n" // "A: Clone PAK to SD Card\n"
-        "B: Back"
-    );
+    if (accessory_is_cpak[0]) {
+        component_actions_bar_text_draw(
+            ALIGN_LEFT, VALIGN_TOP,
+            "A: Clone\n"
+            "B: Back"
+        );
+    }
+    else {
+        component_actions_bar_text_draw(
+            ALIGN_LEFT, VALIGN_TOP,
+            "\n"
+            "B: Back"
+        );
+    }
 
     rdpq_detach_show();
 }