diff --git a/include/window_state.h b/include/window_state.h
index ebf8dce..cfa844a 100644
--- a/include/window_state.h
+++ b/include/window_state.h
@@ -3,7 +3,7 @@
 
 #include "common.h"
 #include <stddef.h>
-#define GRAPH_DAYS 30
+#include <time.h>
 
 enum mode_t {
   WINDOW = 0,
@@ -21,4 +21,8 @@ size_t get_intention_size();
 Mode get_mode();
 void set_mode(Mode mode);
 
+// returns 1 for win, 0 for loss
+U32 get_result(struct tm *time);
+void set_result(struct tm *time, U32 result);
+
 #endif
diff --git a/src/main.c b/src/main.c
index e5573a3..0e98d1d 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,10 +1,12 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <time.h>
 
 #define RAYGUI_IMPLEMENTATION
 #include <raygui.h>
 #include <raylib.h>
 #include "window_state.h"
+#include "common.h"
 
 #define WINDOW_HEIGHT 700
 #define WINDOW_WIDTH 550
@@ -34,7 +36,7 @@ typedef struct cell_t {
 } Cell;
 
 int cell_number(Cell c) {
-  return (c.row + 1) * (c.column + 1);
+  return c.row + 1 + (c.column * 7);
 }
 
 int distance(Cell a, Cell b) {
@@ -46,22 +48,23 @@ int distance(Cell a, Cell b) {
 time_t now;
 struct tm local_time;
 
-void get_date_days_ago(int days_ago, char *buffer, size_t buffer_size) {
+// Returns the time info struct which is a static variable within time.h stdlib 
+struct tm *get_date_days_ago(int days_ago, char *buffer, size_t buffer_size) {
   time_t raw_time;
   struct tm *time_info;
-
   time(&raw_time);
   time_info = localtime(&raw_time); // caution: localtime() overwrites the static struct internally as opposed to localtime_r
   time_info->tm_mday -= days_ago;
   mktime(time_info);
 
   strftime(buffer, buffer_size, "%B %d", time_info);
+  
+  return time_info;
 }
 
 void draw_graph(int x, int y) {
   int num_columns = NUM_WEEKS;
   int num_rows = 7; // days in a week
-  bool checked = false;
 
   int cell_number_today = cell_number((Cell) {local_time.tm_wday, num_columns - 1});
 
@@ -73,16 +76,23 @@ void draw_graph(int x, int y) {
 
       int days_ago = cell_number_today - curr_cell_number;
       char tooltip_text[128];
-      get_date_days_ago(days_ago, tooltip_text, sizeof(tooltip_text));
+      struct tm *time = get_date_days_ago(days_ago, tooltip_text, sizeof(tooltip_text));
+
+      U32 result = get_result(time);
       GuiSetTooltip(tooltip_text);
       
       // full size of a cell is spacing * 2 + size, and then need to go little more 
       int cell_x = CELL_SPACING + (((CELL_SPACING * 2) + CELL_SIZE) * c);
       int cell_y = CELL_SPACING + (((CELL_SPACING * 2) + CELL_SIZE) * r);
-      
-      GuiSetStyle(BUTTON, BASE_COLOR_NORMAL, ColorToInt(GREEN));
+
+      if (result) {
+        GuiSetStyle(BUTTON, BASE_COLOR_NORMAL, ColorToInt(GREEN));
+      } else {
+        GuiSetStyle(BUTTON, BASE_COLOR_NORMAL, ColorToInt(GRAY));
+      }
       if (GuiButton((Rectangle) {cell_x + x, cell_y + y, CELL_SIZE, CELL_SIZE}, " ")) {
 	printf("clicked row %d | column %d\n", r, c);
+	set_result(time, abs(result - 1));
       }
 
       if (c == 0 && r == 1) {
diff --git a/src/window_state.c b/src/window_state.c
index d06d44a..3f7ef7e 100644
--- a/src/window_state.c
+++ b/src/window_state.c
@@ -1,5 +1,6 @@
 #include "window_state.h"
 #include <stdlib.h>
+#include <stdio.h>
 #include <string.h>
 #include <assert.h>
 
@@ -7,9 +8,17 @@ struct state *s = NULL;
 
 #define INTENTION_MAX_SIZE 2048
 
+typedef struct record_t {
+  char *key;
+  U32 value;
+} Record;
+
 struct state {
   Mode mode;
   char intention[INTENTION_MAX_SIZE];
+  Record **records; // array of records
+  size_t size_records;
+  size_t capacity_records;
 };
 
 void init_window_state() {
@@ -17,12 +26,77 @@ void init_window_state() {
   s->mode = WINDOW;
 
   memset(s->intention, 0, sizeof(s->intention));
+
+  s->size_records = 0;
+  s->capacity_records = 1000; //TODO: make dynamic
+  s->records = malloc(sizeof(Record *) * s->capacity_records);
+}
+
+static void add_record(char *key, U32 value) {
+  if (s->size_records >= s->capacity_records) {
+    printf("MAX capacity");
+    exit(-1);
+  }
+  
+  char *cpy = strdup(key);
+
+  Record *new_record = malloc(sizeof(Record));
+  new_record->key = cpy;
+  new_record->value = value;
+  
+  *(s->records + s->size_records) = new_record;
+  s->size_records++;
+}
+
+static void upsert_record(char *key, U32 value) {
+  bool found = false;
+  for (int i = 0; i < s->size_records; i++) {
+    Record *rec = *(s->records + i);
+    if (strcmp(rec->key, key) == 0) {
+      found = true;
+      rec->value = value;
+      break;
+    }
+  }
+
+  if (!found) {
+    add_record(key, value);
+  }
+}
+
+static Record *get_record(char *key) {
+  for (int i = 0; i < s->size_records; i++) {
+    Record *rec = *(s->records + i);
+    if (strcmp(rec->key, key) == 0) {
+      return rec;
+    }
+  }
+
+  return NULL;
+}
+
+static void print_records() {
+  for (int i = 0; i < s->size_records; i++) {
+    Record *rec = *(s->records + i);
+    printf("record: %s -> %d\n", rec->key, rec->value);
+  }
+}
+
+static void generate_key(struct tm *time, char *buffer, size_t buffer_size) {
+  snprintf(buffer, buffer_size, "%d", time->tm_yday);
 }
 
 void cleanup_window_state() {
   if (!s) {
     return;
   }
+
+  for (int i = 0; i < s->size_records; i++) {
+    Record *rec = *(s->records + s->size_records);
+    free(rec);
+  }
+  free(s->records);
+  
   free(s);
   s = NULL;
 }
@@ -52,3 +126,22 @@ Mode get_mode() {
 void set_mode(Mode new_mode) {
   s->mode = new_mode;
 }
+
+U32 get_result(struct tm *time) {
+  char key[10];
+  generate_key(time, key, sizeof(key));
+  Record *rec = get_record(key);
+  if (!rec) {
+    return 0;
+  }
+  
+  return rec->value;
+}
+
+void set_result(struct tm *time, U32 result) {
+  char key[10];
+  generate_key(time, key, sizeof(key));
+  upsert_record(key, result);
+
+  print_records();
+}