#!/bin/bash

# Pre-build phase
pre_build() {
    log_info "Running pre-build phase..."
    
    # Clean build directory
    if [ "$CLEAN_BUILD" = true ]; then
        rm -rf "${BUILD_DIR}/*"
        mkdir -p "$BUILD_DIR"
    fi
    
    # Update version numbers
    update_version_numbers
    
    # Verify environment
    verify_environment
}

# Build phase
build_phase() {
    log_info "Running build phase..."
    
    # Set build start time
    BUILD_START_TIME=$(date +%s)
    
    # Initialize build environment
    initialize_build_environment
    
    # Create build queue
    create_build_queue
    
    # Execute builds
    if [ "$ENABLE_PARALLEL_BUILD" = true ]; then
        execute_parallel_builds
    else
        execute_sequential_builds
    fi
}

# Post-build phase
post_build() {
    log_info "Running post-build phase..."
    
    # Generate documentation
    if [ "$ENABLE_DOCUMENTATION" = true ]; then
        generate_documentation
    fi
    
    # Run tests
    if [ "$ENABLE_UNIT_TESTS" = true ]; then
        run_unit_tests
    fi
    
    if [ "$ENABLE_UI_TESTS" = true ]; then
        run_ui_tests
    fi
    
    # Generate reports
    generate_build_reports
    
    # Clean up
    cleanup_build_artifacts
}

# Helper functions
update_version_numbers() {
    log_info "Updating version numbers..."
    local info_plist="$PROJECT_DIR/$PROJECT_NAME/Info.plist"
    
    if [ -f "$info_plist" ]; then
        local build_number=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "$info_plist")
        local new_build_number=$((build_number + 1))
        /usr/libexec/PlistBuddy -c "Set :CFBundleVersion $new_build_number" "$info_plist"
    else
        log_warning "Info.plist not found at: $info_plist"
    fi
}

verify_environment() {
    log_info "Verifying build environment..."
    
    # Check Xcode version
    local xcode_version=$(xcodebuild -version | head -n 1 | awk '{print $2}')
    log_info "Using Xcode version: $xcode_version"
    
    # Verify certificates
    verify_certificates
    
    # Check available space
    check_disk_space
}

initialize_build_environment() {
    # Create required directories
    mkdir -p "$BUILD_DIR" "$CACHE_DIR" "$REPORTS_DIR"
    
    # Initialize build cache
    init_cache_manager
    
    # Set up logging
    init_logger
}

verify_certificates() {
    log_info "Verifying certificates..."
    local cert_output=$(security find-identity -v -p codesigning)
    
    if echo "$cert_output" | grep -q "$CODE_SIGN_IDENTITY"; then
        log_success "Found signing certificate: $CODE_SIGN_IDENTITY"
    else
        log_error "Signing certificate not found: $CODE_SIGN_IDENTITY"
        exit 1
    fi
}

check_disk_space() {
    log_info "Checking available disk space..."
    local required_space=5120 # 5GB in MB
    local available_space=$(df -m "$BUILD_DIR" | awk 'NR==2 {print $4}')
    
    if [ "$available_space" -lt "$required_space" ]; then
        log_error "Insufficient disk space. Required: ${required_space}MB, Available: ${available_space}MB"
        exit 1
    fi
}

cleanup_build_artifacts() {
    log_info "Cleaning up build artifacts..."
    
    # Remove temporary files
    find "$BUILD_DIR" -name "*.tmp" -delete
    
    # Clean old cache entries
    clean_old_cache_entries
    
    # Remove old logs
    clean_old_logs
}

clean_old_cache_entries() {
    log_info "Cleaning old cache entries..."
    find "$CACHE_DIR" -type f -mtime +$CACHE_EXPIRY_DAYS -delete
    find "$CACHE_DIR" -type d -empty -delete
}

clean_old_logs() {
    log_info "Cleaning old logs..."
    find "$LOG_DIR" -type f -name "*.log" -mtime +30 -delete
}