# Project variables
BINARY_NAME=mysh
PACKAGE_PATH=.
BIN_DIR=./bin
VERSION=$(shell git describe --tags --always --dirty 2>/dev/null || echo "dev")
BUILD_TIME=$(shell date -u '+%Y-%m-%d_%H:%M:%S')
COMMIT_HASH=$(shell git rev-parse --short HEAD 2>/dev/null || echo "unknown")

# Go variables
GOCMD=go
GOBUILD=$(GOCMD) build
GOCLEAN=$(GOCMD) clean
GOTEST=$(GOCMD) test
GOGET=$(GOCMD) get
GOMOD=$(GOCMD) mod
GOFMT=$(GOCMD) fmt

# Build flags
LDFLAGS=-ldflags "-X main.Version=$(VERSION) -X main.BuildTime=$(BUILD_TIME) -X main.CommitHash=$(COMMIT_HASH)"

# Default target
.PHONY: all
all: clean build

# Create bin directory
$(BIN_DIR):
	@mkdir -p $(BIN_DIR)

# Build for current platform
.PHONY: build
build: $(BIN_DIR)
	@echo "Building $(BINARY_NAME) for current platform..."
	$(GOBUILD) $(LDFLAGS) -o $(BIN_DIR)/$(BINARY_NAME) $(PACKAGE_PATH)
	@echo "Binary built: $(BIN_DIR)/$(BINARY_NAME)"

# Build for Linux AMD64
.PHONY: build-linux
build-linux: $(BIN_DIR)
	@echo "Building $(BINARY_NAME) for Linux AMD64..."
	GOOS=linux GOARCH=amd64 $(GOBUILD) $(LDFLAGS) -o $(BIN_DIR)/$(BINARY_NAME)-linux-amd64 $(PACKAGE_PATH)

# Build for Linux ARM64
.PHONY: build-linux-arm64
build-linux-arm64: $(BIN_DIR)
	@echo "Building $(BINARY_NAME) for Linux ARM64..."
	GOOS=linux GOARCH=arm64 $(GOBUILD) $(LDFLAGS) -o $(BIN_DIR)/$(BINARY_NAME)-linux-arm64 $(PACKAGE_PATH)

# Build for macOS AMD64
.PHONY: build-darwin
build-darwin: $(BIN_DIR)
	@echo "Building $(BINARY_NAME) for macOS AMD64..."
	GOOS=darwin GOARCH=amd64 $(GOBUILD) $(LDFLAGS) -o $(BIN_DIR)/$(BINARY_NAME)-darwin-amd64 $(PACKAGE_PATH)

# Build for macOS ARM64 (Apple Silicon)
.PHONY: build-darwin-arm64
build-darwin-arm64: $(BIN_DIR)
	@echo "Building $(BINARY_NAME) for macOS ARM64..."
	GOOS=darwin GOARCH=arm64 $(GOBUILD) $(LDFLAGS) -o $(BIN_DIR)/$(BINARY_NAME)-darwin-arm64 $(PACKAGE_PATH)

# Build for Windows AMD64
.PHONY: build-windows
build-windows: $(BIN_DIR)
	@echo "Building $(BINARY_NAME) for Windows AMD64..."
	GOOS=windows GOARCH=amd64 $(GOBUILD) $(LDFLAGS) -o $(BIN_DIR)/$(BINARY_NAME)-windows-amd64.exe $(PACKAGE_PATH)

# Build for all platforms
.PHONY: build-all
build-all: build-linux build-linux-arm64 build-darwin build-darwin-arm64 build-windows
	@echo "All platform builds completed"

# Run tests
.PHONY: test
test:
	@echo "Running tests..."
	$(GOTEST) -v ./...

# Run tests with coverage
.PHONY: test-coverage
test-coverage:
	@echo "Running tests with coverage..."
	$(GOTEST) -v -coverprofile=coverage.out ./...
	$(GOCMD) tool cover -html=coverage.out -o coverage.html
	@echo "Coverage report generated: coverage.html"

# Clean build artifacts
.PHONY: clean
clean:
	@echo "Cleaning..."
	$(GOCLEAN)
	@rm -rf $(BIN_DIR)
	@rm -f coverage.out coverage.html
	@echo "Clean completed"

# Install dependencies
.PHONY: deps
deps:
	@echo "Installing dependencies..."
	$(GOMOD) download
	$(GOMOD) tidy

# Format code
.PHONY: fmt
fmt:
	@echo "Formatting code..."
	$(GOFMT) ./...

# Run linter (if golangci-lint is installed)
.PHONY: lint
lint:
	@if command -v golangci-lint >/dev/null 2>&1; then \
		echo "Running linter..."; \
		golangci-lint run; \
	else \
		echo "golangci-lint not installed, skipping..."; \
	fi

# Install binary to system
.PHONY: install
install: build
	@echo "Installing $(BINARY_NAME) to /usr/local/bin..."
	@sudo cp $(BIN_DIR)/$(BINARY_NAME) /usr/local/bin/
	@echo "Installation completed"

# Uninstall binary from system
.PHONY: uninstall
uninstall:
	@echo "Removing $(BINARY_NAME) from /usr/local/bin..."
	@sudo rm -f /usr/local/bin/$(BINARY_NAME)
	@echo "Uninstall completed"

# Development build (fast, no optimizations)
.PHONY: dev
dev: $(BIN_DIR)
	@echo "Building development version..."
	$(GOBUILD) -o $(BIN_DIR)/$(BINARY_NAME) $(PACKAGE_PATH)

# Release build (optimized)
.PHONY: release
release: clean test build-all
	@echo "Release build completed"

# Show help
.PHONY: help
help:
	@echo "Available targets:"
	@echo "  build         - Build for current platform"
	@echo "  build-linux   - Build for Linux AMD64"
	@echo "  build-linux-arm64 - Build for Linux ARM64"
	@echo "  build-darwin  - Build for macOS AMD64"
	@echo "  build-darwin-arm64 - Build for macOS ARM64"
	@echo "  build-windows - Build for Windows AMD64"
	@echo "  build-all     - Build for all platforms"
	@echo "  test          - Run tests"
	@echo "  test-coverage - Run tests with coverage report"
	@echo "  clean         - Clean build artifacts"
	@echo "  deps          - Install dependencies"
	@echo "  fmt           - Format code"
	@echo "  lint          - Run linter"
	@echo "  install       - Install binary to system"
	@echo "  uninstall     - Remove binary from system"
	@echo "  dev           - Fast development build"
	@echo "  release       - Full release build (all platforms)"
	@echo "  help          - Show this help"