// 项目分析模板
struct ProjectAnalysis {
    name: String,
    architecture: String,
    key_features: Vec<String>,
    learning_points: Vec<String>,
    code_examples: Vec<String>,
}

fn analyze_project(project_name: &str) -> ProjectAnalysis {
    match project_name {
        "ripgrep" => ProjectAnalysis {
            name: "ripgrep".to_string(),
            architecture: "命令行工具，使用并行搜索和内存映射".to_string(),
            key_features: vec![
                "递归文件搜索".to_string(),
                "正则表达式支持".to_string(),
                "并行处理".to_string(),
                "性能优化".to_string(),
            ],
            learning_points: vec![
                "命令行参数处理".to_string(),
                "文件系统操作".to_string(),
                "并行编程".to_string(),
                "性能基准测试".to_string(),
            ],
            code_examples: vec![
                "使用 clap 解析参数".to_string(),
                "使用 walkdir 遍历文件".to_string(),
                "使用 regex 进行匹配".to_string(),
                "使用 crossbeam 进行并行处理".to_string(),
            ],
        },
        "actix-web" => ProjectAnalysis {
            name: "actix-web".to_string(),
            architecture: "基于 Actor 模型的 Web 框架".to_string(),
            key_features: vec![
                "高性能 HTTP 服务器".to_string(),
                "异步请求处理".to_string(),
                "中间件系统".to_string(),
                "类型安全路由".to_string(),
            ],
            learning_points: vec![
                "Actor 并发模型".to_string(),
                "异步编程".to_string(),
                "Web 框架设计".to_string(),
                "中间件开发".to_string(),
            ],
            code_examples: vec![
                "定义路由和处理函数".to_string(),
                "使用中间件".to_string(),
                "错误处理".to_string(),
                "状态管理".to_string(),
            ],
        },
        _ => ProjectAnalysis {
            name: "未知项目".to_string(),
            architecture: "".to_string(),
            key_features: vec![],
            learning_points: vec![],
            code_examples: vec![],
        },
    }
}

struct ContributionPlan {
    project: String,
    steps: Vec<String>,
    timeline: String,
    goals: Vec<String>,
}

fn create_contribution_plan(project: &str) -> ContributionPlan {
    ContributionPlan {
        project: project.to_string(),
        steps: vec![
            "1. 深入阅读项目文档和代码".to_string(),
            "2. 运行项目并理解功能".to_string(),
            "3. 查看 Issues 和 PR".to_string(),
            "4. 选择简单的 Issue 开始".to_string(),
            "5. 编写测试和文档".to_string(),
            "6. 提交 PR 并参与讨论".to_string(),
        ],
        timeline: "2-3 个月".to_string(),
        goals: vec![
            "理解项目架构".to_string(),
            "贡献至少一个 PR".to_string(),
            "参与社区讨论".to_string(),
            "学习最佳实践".to_string(),
        ],
    }
}

// 简化的 ripgrep 核心功能
use std::fs;
use std::path::Path;
use regex::Regex;

struct SimpleGrep {
    pattern: String,
    case_sensitive: bool,
}

impl SimpleGrep {
    fn new(pattern: String) -> Self {
        Self {
            pattern,
            case_sensitive: true,
        }
    }
    
    fn search_file(&self, file_path: &Path) -> Result<Vec<String>, std::io::Error> {
        let content = fs::read_to_string(file_path)?;
        let mut matches = Vec::new();
        
        let regex = if self.case_sensitive {
            Regex::new(&self.pattern)
        } else {
            Regex::new(&format!("(?i){}", self.pattern))
        }.unwrap();
        
        for (line_num, line) in content.lines().enumerate() {
            if regex.is_match(line) {
                matches.push(format!("{}:{}: {}", 
                    file_path.display(), line_num + 1, line));
            }
        }
        
        Ok(matches)
    }
    
    fn search_directory(&self, dir_path: &Path) -> Result<Vec<String>, std::io::Error> {
        let mut all_matches = Vec::new();
        
        if let Ok(entries) = fs::read_dir(dir_path) {
            for entry in entries {
                if let Ok(entry) = entry {
                    let path = entry.path();
                    if path.is_file() {
                        if let Ok(matches) = self.search_file(&path) {
                            all_matches.extend(matches);
                        }
                    }
                }
            }
        }
        
        Ok(all_matches)
    }
}

fn main() {
    let grep = SimpleGrep::new("rust".to_string());
    
    if let Ok(matches) = grep.search_directory(Path::new(".")) {
        for m in matches {
            println!("{}", m);
        }
    }
}