feat: add script to reorder includes in .cpp files and ensure corresponding header is at the top

format.sh

@@ -3,6 +3,9 @@
 ./check_iwyu.sh
 ./fix_iwyu_auto.sh
 
+# Reorder includes to put corresponding header first
+./reorder_includes.sh
+
 find webserv -name "*.hpp" -o -name "*.cpp" | xargs sed -i -E 's/#include "(.*)"/#include <\1>/g'
 find webserv -name "*.cpp" -o -name "*.hpp" | xargs clang-format -i
 find webserv -name "*.hpp" -exec sh -c 'if ! grep -q "#pragma once" "$1"; then echo "Missing #pragma once in $1"; fi' _ {} \;

reorder_includes.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+
+# Script to reorder includes in .cpp files:
+# 1. Move the corresponding .hpp include to the top of includes
+# 2. Add a blank line after it (avoiding multiple blank lines)
+
+find webserv -name "*.cpp" | while read -r cpp_file; do
+    # Get the base name without extension (e.g., "Client" from "Client.cpp")
+    base_name=$(basename "$cpp_file" .cpp)
+    
+    # Use Python for reliable processing
+    python3 << EOF
+import re
+import sys
+
+cpp_file = "$cpp_file"
+base_name = "$base_name"
+
+# Read the file
+try:
+    with open(cpp_file, 'r') as f:
+        lines = f.readlines()
+except Exception as e:
+    print(f"Error reading {cpp_file}: {e}")
+    sys.exit(1)
+
+# Find the corresponding header include pattern
+header_pattern = re.compile(rf'#include <.*/{re.escape(base_name)}\.hpp>')
+header_include_line = None
+
+# Look for the header include
+for line in lines:
+    if header_pattern.search(line.strip()):
+        header_include_line = line
+        break
+
+if not header_include_line:
+    print(f"No corresponding header found for: {cpp_file}")
+    sys.exit(0)
+
+print(f"Processing: {cpp_file}")
+
+# Process the file
+result_lines = []
+includes_started = False
+header_added = False
+last_line_was_empty = False
+
+for i, line in enumerate(lines):
+    stripped = line.strip()
+    is_empty_line = stripped == ""
+    
+    # Check if this is the start of includes section
+    if stripped.startswith('#include') and not includes_started:
+        includes_started = True
+        # Add the header include first (with blank line after)
+        if not header_added:
+            result_lines.append(header_include_line)
+            result_lines.append('\n')
+            header_added = True
+            last_line_was_empty = True
+    
+    # Skip the header include line (we already added it)
+    if stripped.startswith('#include') and header_pattern.search(stripped):
+        continue
+    
+    # Handle empty lines: avoid multiple consecutive empty lines
+    if is_empty_line:
+        if not last_line_was_empty:
+            result_lines.append(line)
+            last_line_was_empty = True
+    else:
+        result_lines.append(line)
+        last_line_was_empty = False
+
+# Write the result back
+try:
+    with open(cpp_file, 'w') as f:
+        f.writelines(result_lines)
+except Exception as e:
+    print(f"Error writing {cpp_file}: {e}")
+    sys.exit(1)
+
+EOF
+
+done
+
+echo "Include reordering complete!"