feat: add copyright check functionality

Added copyright check module that automatically verifies copyright and
license headers in staged files during commit process. The system checks
for copyright notices, validates copyright years, and ensures license
declarations are present. For new files, it examines staged content
while for modified files it checks working directory content. Users are
prompted to confirm continuation if copyright issues are detected.

The implementation includes file type detection, content extraction from
git staging area, and comprehensive copyright pattern matching. Uses
chrono crate for current year comparison to ensure copyright dates are
up-to-date.

Log: Added automated copyright checking during commit process

Influence:
1. Test copyright check with files containing valid copyright headers
2. Verify detection of missing copyright notices in new files
3. Test copyright year validation with outdated years
4. Check license declaration detection for various license types
5. Verify user prompt behavior when copyright issues are found
6. Test skip functionality when using amend mode
7. Validate file type detection for different file extensions
8. Test content extraction from both staged and working directory files

Author: caimc123456

Cargo.lock

@@ -18,6 +18,7 @@ anyhow = "1.0"
 async-trait = "0.1"
 config = "0.13"
 regex = "1.10"
+chrono = "0.4"
 textwrap = "0.16"
 clap = { version = "4.4", features = ["derive"] }
 clap_complete = { version = "4.5", features = ["unstable-dynamic"] }

Cargo.toml

@@ -2,6 +2,8 @@ use regex::Regex;
 use crate::ai_service;
 use crate::config;
 use crate::git;
+use crate::review;
+use crate::copyright_check;
 
 /// 从提交消息中提取 Change-Id
 fn extract_change_id(message: &str) -> Option<String> {
@@ -718,9 +720,8 @@ impl CommitMessage {
     }
 }
 
-use crate::review;
 use dialoguer::Confirm;
-use log::{debug, info};
+use log::{debug, info, warn};
 use std::process::Command;
 
 pub async fn generate_commit_message(
@@ -786,6 +787,38 @@ pub async fn generate_commit_message(
 
     let config = config::Config::load()?;
 
+    // 执行版权检查（对于 amend 模式，我们跳过检查）
+    if !amend {
+        info!("正在进行版权检查...");
+        
+        // 优先使用 AI 检查，如果失败则回退到硬编码检查
+        let check_result = match copyright_check::check_copyright_with_ai(&config).await {
+            Ok(result) => {
+                info!("AI 版权检查完成");
+                result
+            }
+            Err(e) => {
+                warn!("AI 版权检查失败，回退到硬编码检查: {}", e);
+                copyright_check::check_copyright()?
+            }
+        };
+        
+        let formatted = copyright_check::format_copyright_result(&check_result);
+        println!("\n{}\n", formatted);
+        
+        // 如果有版权问题，询问用户是否继续
+        if check_result.has_issues {
+            if !Confirm::with_theme(&dialoguer::theme::ColorfulTheme::default())
+                .with_prompt("发现版权问题，是否继续提交？")
+                .default(false)
+                .interact()?
+            {
+                println!("已取消提交");
+                return Ok(());
+            }
+        }
+    }
+
     // 在确认有差异内容后执行代码审查（对于 amend 模式，我们跳过审查，因为是对已有提交的修改）
     if !amend && !no_review && config.ai_review {
         info!("正在进行代码审查...");