refactor: streamline build directory detection and update Makefile for environment handling

.devcontainer/devcontainer.json

@@ -65,5 +65,8 @@
     },
     
     // Simple post-create setup
-    "postCreateCommand": "echo 'Dev container ready! Use GitHub CLI (gh auth login) or configure Git with HTTPS for GitHub access.'"
+    "postCreateCommand": "echo 'Dev container ready! Use GitHub CLI (gh auth login) or configure Git with HTTPS for GitHub access.'",
+    
+    // Clean build directory and optionally build every time VS Code attaches to container
+    // "postAttachCommand": "rm -rf /workspaces/webserv/build && echo 'Cleaned build directory for container environment' && (cd /workspaces/webserv && timeout 60 make debug && echo 'Initial build completed successfully' || echo 'Initial build failed or timed out - you can build manually with: make debug') &"
 }

.vscode/settings.json

@@ -47,5 +47,6 @@
         "string": "cpp",
         "unordered_map": "cpp",
         "string_view": "cpp"
-    }
+    },
+    "cmake.buildDirectory": "${workspaceFolder}/build"
 }

Makefile

@@ -1,35 +1,51 @@
 # Variables
-# Detect if we're in a dev container or local development
-ifeq ($(shell whoami),vscode)
-    BUILD_DIR = build-container
-else
-    BUILD_DIR = build-local
-endif
-
+BUILD_DIR = build
 CMAKE = cmake
 CMAKE_BUILD = cmake --build
 CMAKE_FLAGS = -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
 CONFIG_FILE = config/default.conf
 
+# Environment detection
+ifeq ($(shell whoami),vscode)
+    CURRENT_ENV = container
+else ifneq ($(REMOTE_CONTAINERS),)
+    CURRENT_ENV = container
+else
+    CURRENT_ENV = local
+endif
+
+# Check if build directory was created in different environment
+ifneq ($(wildcard $(BUILD_DIR)/.build-env),)
+    PREVIOUS_ENV := $(shell cat $(BUILD_DIR)/.build-env 2>/dev/null || echo "unknown")
+    ifneq ($(PREVIOUS_ENV),$(CURRENT_ENV))
+        $(info Detected environment switch from $(PREVIOUS_ENV) to $(CURRENT_ENV) - cleaning build directory)
+        $(shell rm -rf $(BUILD_DIR))
+    endif
+endif
+
 # Default target
 all: release
 
 # Configure CMake if build directory doesn't exist
 $(BUILD_DIR):
 	$(CMAKE) -B $(BUILD_DIR) $(CMAKE_FLAGS)
+	@echo "$(CURRENT_ENV)" > $(BUILD_DIR)/.build-env
 
 # Build targets with specific build types
 release: $(BUILD_DIR)
 	$(CMAKE) -B $(BUILD_DIR) $(CMAKE_FLAGS) -DCMAKE_BUILD_TYPE=Release
 	$(CMAKE_BUILD) $(BUILD_DIR) --target webserv --parallel
+	@echo "$(CURRENT_ENV)" > $(BUILD_DIR)/.build-env
 
 debug: $(BUILD_DIR)
 	$(CMAKE) -B $(BUILD_DIR) $(CMAKE_FLAGS) -DCMAKE_BUILD_TYPE=Debug
 	$(CMAKE_BUILD) $(BUILD_DIR) --target webserv
+	@echo "$(CURRENT_ENV)" > $(BUILD_DIR)/.build-env
 
 asan: $(BUILD_DIR)
 	$(CMAKE) -B $(BUILD_DIR) $(CMAKE_FLAGS) -DCMAKE_BUILD_TYPE=ASAN
 	$(CMAKE_BUILD) $(BUILD_DIR) --target webserv
+	@echo "$(CURRENT_ENV)" > $(BUILD_DIR)/.build-env
 
 run: run_release
 

check_iwyu.sh

@@ -3,12 +3,8 @@
 # Don't exit on first error - we want to continue checking all files
 # set -e
 
-# Detect project root - try container path first, then current directory
-if [ -d "/workspace" ]; then
-    PROJECT_ROOT="/workspace"
-else
+# Use current working directory as project root
 PROJECT_ROOT="$(pwd)"
-fi
 
 # Find the build directory - check multiple possible locations
 BUILD_DIR=""
@@ -67,12 +63,8 @@ if [ -z "$BUILD_DIR" ]; then
     echo -e "${YELLOW}🔨 Running cmake to create build directory...${NC}"
     
     cd "$PROJECT_ROOT"
-    # Try to create build directory (prefer build-container in container, build-local otherwise)
-    if [ -d "/workspace" ]; then
-        BUILD_DIR="$PROJECT_ROOT/build-container"
-    else
-        BUILD_DIR="$PROJECT_ROOT/build-local"
-    fi
+
+        BUILD_DIR="$PROJECT_ROOT/build"
 
     mkdir -p "$BUILD_DIR"
     cd "$BUILD_DIR"