#!/bin/bash

# 自动更新 CLAUDE.md 文档脚本
# 当项目结构发生变化时，自动同步更新相关模块的 CLAUDE.md

set -e

echo "📝 开始更新 CLAUDE.md 文档..."

# 定义颜色输出
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# 检查是否在项目根目录
if [ ! -f "CLAUDE.md" ]; then
    echo -e "${RED}❌ 请在项目根目录运行此脚本${NC}"
    exit 1
fi

# 获取当前日期
CURRENT_DATE=$(date +"%Y-%m-%d %H:%M:%S")

# 更新根目录 CLAUDE.md 的最后更新时间
update_root_claude_md() {
    echo -e "${YELLOW}📋 更新根目录 CLAUDE.md...${NC}"
    
    # 在文件末尾添加更新时间（如果不存在）
    if ! grep -q "最后更新时间" CLAUDE.md; then
        echo "" >> CLAUDE.md
        echo "---" >> CLAUDE.md
        echo "**最后更新时间**: $CURRENT_DATE" >> CLAUDE.md
    else
        # 更新现有的时间戳
        sed -i.bak "s/\*\*最后更新时间\*\*:.*/\*\*最后更新时间\*\*: $CURRENT_DATE/" CLAUDE.md
        rm CLAUDE.md.bak
    fi
}

# 检查前端模块变更
check_frontend_changes() {
    echo -e "${YELLOW}🎨 检查前端模块变更...${NC}"
    
    # 检查前端相关文件是否变更
    if git diff --name-only HEAD~1 2>/dev/null | grep -E "^frontend/" > /dev/null; then
        echo -e "${GREEN}✅ 检测到前端模块变更${NC}"
        
        # 更新前端 CLAUDE.md 的时间戳
        if [ -f "frontend/CLAUDE.md" ]; then
            if ! grep -q "最后更新时间" frontend/CLAUDE.md; then
                echo "" >> frontend/CLAUDE.md
                echo "---" >> frontend/CLAUDE.md
                echo "**最后更新时间**: $CURRENT_DATE" >> frontend/CLAUDE.md
            else
                sed -i.bak "s/\*\*最后更新时间\*\*:.*/\*\*最后更新时间\*\*: $CURRENT_DATE/" frontend/CLAUDE.md
                rm frontend/CLAUDE.md.bak
            fi
        fi
    fi
}

# 检查部署模块变更
check_deployment_changes() {
    echo -e "${YELLOW}🚀 检查部署模块变更...${NC}"
    
    # 检查部署相关文件是否变更
    if git diff --name-only HEAD~1 2>/dev/null | grep -E "^docs/deployment/|^\.gitea/workflows/" > /dev/null; then
        echo -e "${GREEN}✅ 检测到部署模块变更${NC}"
        
        # 更新部署 CLAUDE.md 的时间戳
        if [ -f "docs/deployment/CLAUDE.md" ]; then
            if ! grep -q "最后更新时间" docs/deployment/CLAUDE.md; then
                echo "" >> docs/deployment/CLAUDE.md
                echo "---" >> docs/deployment/CLAUDE.md
                echo "**最后更新时间**: $CURRENT_DATE" >> docs/deployment/CLAUDE.md
            else
                sed -i.bak "s/\*\*最后更新时间\*\*:.*/\*\*最后更新时间\*\*: $CURRENT_DATE/" docs/deployment/CLAUDE.md
                rm docs/deployment/CLAUDE.md.bak
            fi
        fi
    fi
}

# 检查 CI/CD 模块变更
check_cicd_changes() {
    echo -e "${YELLOW}⚙️ 检查 CI/CD 模块变更...${NC}"
    
    # 检查 CI/CD 相关文件是否变更
    if git diff --name-only HEAD~1 2>/dev/null | grep -E "^\.gitea/workflows/" > /dev/null; then
        echo -e "${GREEN}✅ 检测到 CI/CD 模块变更${NC}"
        
        # 更新 CI/CD CLAUDE.md 的时间戳
        if [ -f ".gitea/workflows/CLAUDE.md" ]; then
            if ! grep -q "最后更新时间" .gitea/workflows/CLAUDE.md; then
                echo "" >> .gitea/workflows/CLAUDE.md
                echo "---" >> .gitea/workflows/CLAUDE.md
                echo "**最后更新时间**: $CURRENT_DATE" >> .gitea/workflows/CLAUDE.md
            else
                sed -i.bak "s/\*\*最后更新时间\*\*:.*/\*\*最后更新时间\*\*: $CURRENT_DATE/" .gitea/workflows/CLAUDE.md
                rm .gitea/workflows/CLAUDE.md.bak
            fi
        fi
    fi
}

# 验证所有 CLAUDE.md 文件存在
validate_claude_files() {
    echo -e "${YELLOW}🔍 验证 CLAUDE.md 文件...${NC}"
    
    local files=(
        "CLAUDE.md"
        "frontend/CLAUDE.md"
        "docs/deployment/CLAUDE.md"
        ".gitea/workflows/CLAUDE.md"
    )
    
    for file in "${files[@]}"; do
        if [ -f "$file" ]; then
            echo -e "${GREEN}✅ $file 存在${NC}"
        else
            echo -e "${RED}❌ $file 不存在${NC}"
        fi
    done
}

# 主函数
main() {
    echo -e "${GREEN}🚀 CLAUDE.md 文档更新工具${NC}"
    echo "================================================"
    
    # 验证文件
    validate_claude_files
    
    # 更新根目录
    update_root_claude_md
    
    # 检查各模块变更
    check_frontend_changes
    check_deployment_changes
    check_cicd_changes
    
    echo "================================================"
    echo -e "${GREEN}✅ CLAUDE.md 文档更新完成！${NC}"
    echo -e "${YELLOW}💡 提示: 记得提交更新的文档${NC}"
}

# 如果是通过命令行直接运行
if [ "${BASH_SOURCE[0]}" == "${0}" ]; then
    main "$@"
fi