1 files changed, 50 insertions, 1 deletions

diff --git a/src/main.cpp b/src/main.cpp
index 57b7077..ccec7a1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,3 +1,5 @@
+#include <cctype>
+#include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <print>
@@ -13,6 +15,20 @@ Piece NonePiece = {
 };
 #include <iostream>
 
+bool isValidChessRank(char rank) {
+  if (rank >= '1' && rank <= '8') {
+    return true;
+  } else {
+    return false;
+  }
+}
+bool isValidChessFile(char rank) {
+  if (rank >= 'A' && rank <= 'H') {
+    return true;
+  } else {
+    return false;
+  }
+}
 void PrintMoves(const std::vector<Move> &moves) {
   std::cout << "Moves (" << moves.size() << "):\n";
 
@@ -61,7 +77,40 @@ int main(int argc, char **argv) {
       std::cout << "Exiting...\n";
       return 0;
     }
-    std::cout << command;
+    if (!isValidChessFile(command[0])) {
+      std::cout << "ERROR: Expected valid file at first place";
+      std::println();
+      continue;
+    }
+
+    if (!isValidChessRank(command[1])) {
+      std::cout << "ERROR: Expected valid rank at second place";
+      std::println();
+      continue;
+    }
+
+    if (!isValidChessFile(command[2])) {
+      std::cout << "ERROR: Expected valid file at third place";
+      std::println();
+      continue;
+    }
+
+    if (!isValidChessRank(command[3])) {
+      std::cout << "ERROR: Expected valid rank at four place";
+      std::println();
+      continue;
+    }
+
+    // we know its a valid chess pos
+    uint8_t fromFile = command[0] - 'A';
+    uint8_t fromRank = command[1] - '0';
+    uint8_t toFile = command[2] - 'A';
+    uint8_t toRank = command[3] - '0';
+    std::cout << fromFile << "\n";
+    std::cout << fromRank << "\n";
+    std::cout << toFile << "\n";
+    std::cout << toRank << "\n";
+    Move move = {fromRank, fromFile, toRank, toFile};
     std::println();
   }
   return EXIT_SUCCESS;