<?php
/**
 * Git文件上传工具
 * 支持JS和CSS分离，文件上传无限制
 */

// 设置上传限制
ini_set('upload_max_filesize', '0');
ini_set('post_max_size', '0');
ini_set('max_execution_time', '0');
ini_set('memory_limit', '-1');

// 获取当前目录
$currentDir = __DIR__;
$gitDir = $currentDir . '/.git';
$remoteConfigFile = $currentDir . '/.git_remote_config.json';

// 检查Git仓库是否存在
function checkGitRepo() {
    global $gitDir;
    return is_dir($gitDir);
}

// 初始化Git仓库
function initGitRepo() {
    global $currentDir;
    try {
        exec('cd "' . $currentDir . '" && git init', $output, $returnCode);
        return $returnCode === 0;
    } catch (Exception $e) {
        return false;
    }
}

// 获取文件列表
function getFileList($dir = '.') {
    $files = [];
    $iterator = new RecursiveIteratorIterator(
        new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS),
        RecursiveIteratorIterator::SELF_FIRST
    );
    
    foreach ($iterator as $file) {
        if ($file->isFile() && !strpos($file->getPathname(), '.git')) {
            $relativePath = str_replace('\\', '/', substr($file->getPathname(), strlen(__DIR__) + 1));
            $files[] = $relativePath;
        }
    }
    
    return $files;
}

// 处理文件上传
function handleFileUpload($files) {
    $uploadedFiles = [];
    
    if (!isset($files['files']) || empty($files['files']['name'][0])) {
        return ['success' => false, 'message' => '没有选择文件'];
    }
    
    $uploadDir = __DIR__ . '/uploads/';
    if (!is_dir($uploadDir)) {
        mkdir($uploadDir, 0777, true);
    }
    
    $fileCount = count($files['files']['name']);
    
    for ($i = 0; $i < $fileCount; $i++) {
        if ($files['files']['error'][$i] === UPLOAD_ERR_OK) {
            $tmpName = $files['files']['tmp_name'][$i];
            $fileName = basename($files['files']['name'][$i]);
            $uploadPath = $uploadDir . $fileName;
            
            // 移动上传的文件
            if (move_uploaded_file($tmpName, $uploadPath)) {
                $uploadedFiles[] = $fileName;
            }
        }
    }
    
    return ['success' => true, 'files' => $uploadedFiles];
}

// 获取远程仓库配置
function getRemoteConfig() {
    global $remoteConfigFile;
    
    if (file_exists($remoteConfigFile)) {
        $config = json_decode(file_get_contents($remoteConfigFile), true);
        return $config ?: ['remotes' => []];
    }
    
    return ['remotes' => []];
}

// 保存远程仓库配置
function saveRemoteConfig($config) {
    global $remoteConfigFile;
    
    return file_put_contents($remoteConfigFile, json_encode($config, JSON_PRETTY_PRINT));
}

// 添加远程仓库
function addRemote($name, $url) {
    global $currentDir;
    
    try {
        exec('cd "' . $currentDir . '" && git remote add ' . escapeshellarg($name) . ' ' . escapeshellarg($url), $output, $returnCode);
        
        if ($returnCode === 0) {
            // 保存到配置文件
            $config = getRemoteConfig();
            $config['remotes'][$name] = $url;
            saveRemoteConfig($config);
            return ['success' => true, 'message' => '远程仓库添加成功'];
        } else {
            return ['success' => false, 'message' => '远程仓库添加失败'];
        }
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 获取远程仓库列表
function getRemotes() {
    global $currentDir;
    
    try {
        exec('cd "' . $currentDir . '" && git remote -v', $output, $returnCode);
        
        $remotes = [];
        foreach ($output as $line) {
            if (preg_match('/^(\S+)\s+(\S+)\s+\((\w+)\)/', $line, $matches)) {
                $remotes[$matches[1]] = [
                    'url' => $matches[2],
                    'type' => $matches[3]
                ];
            }
        }
        
        return ['success' => true, 'remotes' => $remotes];
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 推送代码到指定远程仓库
function pushToRemote($remote = 'origin', $branch = 'main') {
    global $currentDir;
    
    try {
        exec('cd "' . $currentDir . '" && git push ' . escapeshellarg($remote) . ' ' . escapeshellarg($branch), $output, $returnCode);
        
        return ['success' => $returnCode === 0, 'output' => $output];
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 获取分支列表
function getBranches() {
    global $currentDir;
    
    try {
        $output = [];
        $returnCode = 0;
        
        // 获取本地分支
        exec('cd "' . $currentDir . '" && git branch -a', $output, $returnCode);
        
        $branches = [];
        $currentBranch = '';
        
        foreach ($output as $line) {
            $line = trim($line);
            if (empty($line)) continue;
            
            // 检查是否是当前分支
            if (strpos($line, '*') === 0) {
                $currentBranch = trim(substr($line, 1));
                $branches[] = [
                    'name' => $currentBranch,
                    'current' => true,
                    'remote' => false
                ];
            } else {
                // 检查是否是远程分支
                $isRemote = strpos($line, 'remotes/') !== false;
                $branchName = $isRemote ? substr($line, strpos($line, 'remotes/') + 8) : $line;
                
                $branches[] = [
                    'name' => trim($branchName),
                    'current' => false,
                    'remote' => $isRemote
                ];
            }
        }
        
        return ['success' => true, 'branches' => $branches, 'current' => $currentBranch];
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 创建新分支
function createBranch($branchName) {
    global $currentDir;
    
    try {
        exec('cd "' . $currentDir . '" && git checkout -b ' . escapeshellarg($branchName), $output, $returnCode);
        
        if ($returnCode === 0) {
            return ['success' => true, 'message' => '分支创建成功', 'output' => $output];
        } else {
            return ['success' => false, 'message' => '分支创建失败', 'output' => $output];
        }
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 删除分支
function deleteBranch($branchName, $force = false) {
    global $currentDir;
    
    try {
        $forceFlag = $force ? '-D' : '-d';
        exec('cd "' . $currentDir . '" && git branch ' . $forceFlag . ' ' . escapeshellarg($branchName), $output, $returnCode);
        
        if ($returnCode === 0) {
            return ['success' => true, 'message' => '分支删除成功', 'output' => $output];
        } else {
            return ['success' => false, 'message' => '分支删除失败', 'output' => $output];
        }
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 切换分支
function switchBranch($branchName) {
    global $currentDir;
    
    try {
        exec('cd "' . $currentDir . '" && git checkout ' . escapeshellarg($branchName), $output, $returnCode);
        
        if ($returnCode === 0) {
            return ['success' => true, 'message' => '分支切换成功', 'output' => $output];
        } else {
            return ['success' => false, 'message' => '分支切换失败', 'output' => $output];
        }
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 处理Git操作
function handleGitOperation($operation, $message = '', $files = [], $remote = 'origin', $branch = 'main') {
    global $currentDir;
    
    try {
        $output = [];
        $returnCode = 0;
        
        switch ($operation) {
            case 'status':
                exec('cd "' . $currentDir . '" && git status --porcelain', $output, $returnCode);
                break;
                
            case 'add':
                if (!empty($files)) {
                    foreach ($files as $file) {
                        exec('cd "' . $currentDir . '" && git add "' . $file . '"', $output, $returnCode);
                    }
                } else {
                    exec('cd "' . $currentDir . '" && git add .', $output, $returnCode);
                }
                break;
                
            case 'commit':
                if (empty($message)) {
                    $message = '自动提交';
                }
                exec('cd "' . $currentDir . '" && git commit -m "' . addslashes($message) . '"', $output, $returnCode);
                break;
                
            case 'push':
                // 使用新的推送函数，支持指定远程仓库和分支
                return pushToRemote($remote, $branch);
                
            case 'log':
                exec('cd "' . $currentDir . '" && git log --oneline -10', $output, $returnCode);
                break;
        }
        
        return ['success' => $returnCode === 0, 'output' => $output];
    } catch (Exception $e) {
        return ['success' => false, 'message' => $e->getMessage()];
    }
}

// 处理AJAX请求
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    header('Content-Type: application/json; charset=utf-8');
    
    $action = $_POST['action'] ?? '';
    
    switch ($action) {
        case 'upload':
            $result = handleFileUpload($_FILES);
            echo json_encode($result);
            break;
            
        case 'git_operation':
            $operation = $_POST['operation'] ?? '';
            $message = $_POST['message'] ?? '';
            $files = $_POST['files'] ?? [];
            $remote = $_POST['remote'] ?? 'origin';
            $branch = $_POST['branch'] ?? 'main';
            $result = handleGitOperation($operation, $message, $files, $remote, $branch);
            echo json_encode($result);
            break;
            
        case 'add_remote':
            $name = $_POST['name'] ?? '';
            $url = $_POST['url'] ?? '';
            if (empty($name) || empty($url)) {
                echo json_encode(['success' => false, 'message' => '远程仓库名称和地址不能为空']);
            } else {
                $result = addRemote($name, $url);
                echo json_encode($result);
            }
            break;
            
        case 'get_remotes':
            $result = getRemotes();
            echo json_encode($result);
            break;
            
        case 'get_branches':
            $result = getBranches();
            echo json_encode($result);
            break;
            
        case 'create_branch':
            $branchName = $_POST['branch_name'] ?? '';
            if (empty($branchName)) {
                echo json_encode(['success' => false, 'message' => '分支名称不能为空']);
            } else {
                $result = createBranch($branchName);
                echo json_encode($result);
            }
            break;
            
        case 'delete_branch':
            $branchName = $_POST['branch_name'] ?? '';
            $force = isset($_POST['force']) && $_POST['force'] === 'true';
            if (empty($branchName)) {
                echo json_encode(['success' => false, 'message' => '分支名称不能为空']);
            } else {
                $result = deleteBranch($branchName, $force);
                echo json_encode($result);
            }
            break;
            
        case 'switch_branch':
            $branchName = $_POST['branch_name'] ?? '';
            if (empty($branchName)) {
                echo json_encode(['success' => false, 'message' => '分支名称不能为空']);
            } else {
                $result = switchBranch($branchName);
                echo json_encode($result);
            }
            break;
            
        case 'get_files':
            $files = getFileList();
            echo json_encode(['success' => true, 'files' => $files]);
            break;
            
        case 'check_git':
            echo json_encode(['success' => true, 'hasGit' => checkGitRepo()]);
            break;
            
        case 'init_git':
            $success = initGitRepo();
            echo json_encode(['success' => $success]);
            break;
            
        default:
            echo json_encode(['success' => false, 'message' => '未知操作']);
    }
    exit;
}

?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Git文件上传工具</title>
    <link rel="stylesheet" href="css/style.css">
</head>
<body>
    <div class="container">
        <header>
            <h1>Git文件上传工具</h1>
            <div class="git-status" id="gitStatus">
                <span class="status-indicator" id="gitIndicator"></span>
                <span id="gitStatusText">检查Git状态...</span>
            </div>
        </header>

        <main>
            <!-- 文件上传区域 -->
            <section class="upload-section">
                <h2>文件上传</h2>
                <div class="upload-area" id="uploadArea">
                    <div class="upload-placeholder">
                        <svg class="upload-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"/>
                        </svg>
                        <p>拖拽文件到此处或点击选择文件</p>
                        <p class="upload-hint">支持任意大小的文件，无数量限制</p>
                    </div>
                    <input type="file" id="fileInput" multiple style="display: none;">
                </div>
                <div class="uploaded-files" id="uploadedFiles"></div>
            </section>

            <!-- 文件列表 -->
            <section class="files-section">
                <h2>项目文件</h2>
                <div class="file-controls">
                    <button id="refreshFiles" class="btn btn-secondary">刷新文件列表</button>
                    <button id="selectAllFiles" class="btn btn-secondary">全选</button>
                    <button id="deselectAllFiles" class="btn btn-secondary">取消全选</button>
                </div>
                <div class="file-list" id="fileList">
                    <div class="loading">加载文件中...</div>
                </div>
            </section>

            <!-- Git操作区域 -->
            <section class="git-section">
                <h2>Git操作</h2>
                
                <!-- 分支管理 -->
                <div class="branch-config">
                    <h3>分支管理</h3>
                    <div class="form-group">
                        <label for="branchSelect">当前分支:</label>
                        <select id="branchSelect" class="form-control">
                            <option value="">加载分支中...</option>
                        </select>
                    </div>
                    <div class="form-group">
                        <label for="newBranchName">新分支名称:</label>
                        <input type="text" id="newBranchName" placeholder="输入新分支名称">
                    </div>
                    <div class="button-group">
                        <button id="createBranch" class="btn btn-success">创建分支</button>
                        <button id="switchBranch" class="btn btn-primary">切换分支</button>
                        <button id="deleteBranch" class="btn btn-danger">删除分支</button>
                        <button id="refreshBranches" class="btn btn-secondary">刷新分支</button>
                    </div>
                </div>
                
                <hr style="margin: 20px 0;">
                
                <!-- 远程仓库配置 -->
                <div class="remote-config">
                    <h3>远程仓库配置</h3>
                    <div class="form-group">
                        <label for="remoteName">远程仓库名称:</label>
                        <input type="text" id="remoteName" placeholder="例如: origin" value="origin">
                    </div>
                    <div class="form-group">
                        <label for="remoteUrl">仓库地址:</label>
                        <input type="text" id="remoteUrl" placeholder="例如: https://github.com/username/repo.git">
                    </div>
                    <button id="addRemote" class="btn btn-info">添加远程仓库</button>
                    <button id="showRemotes" class="btn btn-secondary">查看远程仓库</button>
                    
                    <div class="remote-list" id="remoteList"></div>
                </div>
                
                <hr style="margin: 20px 0;">
                
                <div class="git-controls">
                    <div class="form-group">
                        <label for="commitMessage">提交信息:</label>
                        <input type="text" id="commitMessage" placeholder="输入提交信息..." value="自动提交">
                    </div>
                    <div class="button-group">
                        <button id="gitAdd" class="btn btn-primary">添加到暂存区</button>
                        <button id="gitCommit" class="btn btn-success">提交更改</button>
                        <button id="gitPush" class="btn btn-warning">推送到远程</button>
                        <button id="gitStatusBtn" class="btn btn-info">查看状态</button>
                        <button id="gitLog" class="btn btn-secondary">查看日志</button>
                    </div>
                </div>
                <div class="git-output" id="gitOutput"></div>
            </section>
        </main>
    </div>

    <script src="js/main.js"></script>
</body>
</html>