add config support

main.c

@@ -1,21 +1,81 @@
 #include "includes/include.h"
 #include "src/driver.h"
+#include "src/config.h"
+#include "src/help.h"
 
 int main(int argc, char *argv[]) {
     int sens;
     char input[100];
 
-    printf("K1NG PRO (4k) driver | Cli\n");
-    printf("set any sens from 50-26000\n\n");
-    printf("rememeber to set an value like in original software so for example `50 + 50 = 100` or `100 + 50 = 150` u get the point it goes up by 50\n\n");
+    if (argc >= 2 && (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0)) {
+        help();
+        return 0;
+    }
 
-    if (argc < 2) {
+    intro();
+
+    char config_path[512];
+    snprintf(config_path, sizeof(config_path), "%s/mouse_presets.toml", getenv("HOME"));
+
+    if (argc >= 2 && strcmp(argv[1], "-s") == 0) {
+        char name[128];
+        char dpi_str[32];
+        char confirm[8];
+
+        printf("preset name: ");
+        if (fgets(name, sizeof(name), stdin) == NULL) {
+            printf("incorrect input press enter to try again\n");
+            return 1;
+        }
+        name[strcspn(name, "\n")] = 0;
+
+        printf("dpi: ");
+        if (fgets(dpi_str, sizeof(dpi_str), stdin) == NULL) {
+            printf("incorrect input press enter to try again\n");
+            return 1;
+        }
+        int dpi = atoi(dpi_str);
+
+        if (dpi < 50 || dpi > 26000 || dpi % 50 != 0) {
+            printf("incorrect input press enter to try again\n");
+            return 1;
+        }
+
+        printf("do you really want to save sens: %d, name: '%s'? (y/n): ", dpi, name);
+        if (fgets(confirm, sizeof(confirm), stdin) == NULL) {
+            printf("incorrect input press enter to try again\n");
+            return 1;
+        }
+
+        if (confirm[0] != 'y' && confirm[0] != 'Y') {
+            printf("cancelled by user!\n");
+            return 0;
+        }
+
+        config_save_preset(config_path, name, dpi);
+        printf("saved preset '%s' with dpi %d\n", name, dpi);
+        return 0;
+    }
+
+    if (argc >= 2 && strcmp(argv[1], "-p") == 0) {
+        if (argc < 3) {
+            printf("usage: ./k1ng_driver -p <preset>\n");
+            return 1;
+        }
+
+        char *preset_name = argv[2];
+
+        if (config_load_preset(config_path, preset_name, &sens) != 0) {
+            printf("couldnt load preset '%s'\n", preset_name);
+            return 1;
+        }
+        printf("loaded preset '%s' sens: %d\n", preset_name, sens);
+    } else if (argc < 2) {
         printf("set sensitivity to: ");
         if (fgets(input, sizeof(input), stdin) == NULL || input[0] == '\n') {
             printf("incorrect input press enter to try again\n");
             return 1;
         }
-
         char *endptr;
         sens = (int)strtol(input, &endptr, 10);
         if (*endptr != '\n' && *endptr != '\0') {