添加开发者日志功能

WebApi/Controllers/LogController.cs

@@ -0,0 +1,228 @@
+namespace WebApi.Controllers;
+
+[ApiController]
+[Route("api/[controller]/[action]")]
+public class LogController(ILogger<LogController> logger) : ControllerBase
+{
+    /// <summary>
+    /// 获取日志列表（分页）
+    /// </summary>
+    [HttpGet]
+    public async Task<PagedResponse<LogEntry>> GetListAsync(
+        [FromQuery] int pageIndex = 1,
+        [FromQuery] int pageSize = 50,
+        [FromQuery] string? searchKeyword = null,
+        [FromQuery] string? logLevel = null,
+        [FromQuery] string? date = null
+    )
+    {
+        try
+        {
+            // 获取日志目录
+            var logDirectory = Path.Combine(Directory.GetCurrentDirectory(), "logs");
+            if (!Directory.Exists(logDirectory))
+            {
+                return new PagedResponse<LogEntry>
+                {
+                    Success = true,
+                    Data = [],
+                    Total = 0,
+                    Message = "日志目录不存在"
+                };
+            }
+
+            // 确定要读取的日志文件
+            string logFilePath;
+            if (!string.IsNullOrEmpty(date))
+            {
+                logFilePath = Path.Combine(logDirectory, $"log-{date}.txt");
+            }
+            else
+            {
+                // 默认读取今天的日志
+                var today = DateTime.Now.ToString("yyyyMMdd");
+                logFilePath = Path.Combine(logDirectory, $"log-{today}.txt");
+            }
+
+            // 检查文件是否存在
+            if (!System.IO.File.Exists(logFilePath))
+            {
+                return new PagedResponse<LogEntry>
+                {
+                    Success = true,
+                    Data = [],
+                    Total = 0,
+                    Message = "日志文件不存在"
+                };
+            }
+
+            // 读取所有日志行（使用共享读取模式，允许其他进程写入）
+            var allLines = await ReadAllLinesAsync(logFilePath);
+            var logEntries = new List<LogEntry>();
+
+            foreach (var line in allLines)
+            {
+                if (string.IsNullOrWhiteSpace(line))
+                    continue;
+
+                var logEntry = ParseLogLine(line);
+                if (logEntry != null)
+                {
+                    // 应用筛选条件
+                    if (!string.IsNullOrEmpty(searchKeyword) &&
+                        !logEntry.Message.Contains(searchKeyword, StringComparison.OrdinalIgnoreCase))
+                    {
+                        continue;
+                    }
+
+                    if (!string.IsNullOrEmpty(logLevel) &&
+                        !logEntry.Level.Equals(logLevel, StringComparison.OrdinalIgnoreCase))
+                    {
+                        continue;
+                    }
+
+                    logEntries.Add(logEntry);
+                }
+            }
+
+            // 倒序排列（最新的在前面）
+            logEntries.Reverse();
+
+            var total = logEntries.Count;
+            var skip = (pageIndex - 1) * pageSize;
+            var pagedData = logEntries.Skip(skip).Take(pageSize).ToList();
+
+            return new PagedResponse<LogEntry>
+            {
+                Success = true,
+                Data = pagedData.ToArray(),
+                Total = total,
+                Message = "获取日志成功"
+            };
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "获取日志失败");
+            return new PagedResponse<LogEntry>
+            {
+                Success = false,
+                Data = [],
+                Total = 0,
+                Message = $"获取日志失败: {ex.Message}"
+            };
+        }
+    }
+
+    /// <summary>
+    /// 获取可用的日志日期列表
+    /// </summary>
+    [HttpGet]
+    public IActionResult GetAvailableDates()
+    {
+        try
+        {
+            var logDirectory = Path.Combine(Directory.GetCurrentDirectory(), "logs");
+            if (!Directory.Exists(logDirectory))
+            {
+                return Ok(new { success = true, data = new List<string>() });
+            }
+
+            var logFiles = Directory.GetFiles(logDirectory, "log-*.txt");
+            var dates = logFiles
+                .Select(f => Path.GetFileNameWithoutExtension(f))
+                .Select(name => name.Replace("log-", ""))
+                .OrderByDescending(d => d)
+                .ToList();
+
+            return Ok(new { success = true, data = dates });
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "获取日志日期列表失败");
+            return Ok(new { success = false, message = $"获取日志日期列表失败: {ex.Message}" });
+        }
+    }
+
+    /// <summary>
+    /// 解析单行日志
+    /// </summary>
+    private LogEntry? ParseLogLine(string line)
+    {
+        try
+        {
+            // 日志格式示例: [2025-12-29 16:38:45.730 +08:00] [INF] Message here
+            // 使用正则表达式解析
+            var match = System.Text.RegularExpressions.Regex.Match(
+                line,
+                @"^\[(\d{4}-\d{2}-\d{2}\s+\d{2}:\d{2}:\d{2}\.\d{3}\s+[+-]\d{2}:\d{2})\]\s+\[(\w+)\]\s+(.*)$"
+            );
+
+            if (match.Success)
+            {
+                return new LogEntry
+                {
+                    Timestamp = match.Groups[1].Value,
+                    Level = match.Groups[2].Value,
+                    Message = match.Groups[3].Value
+                };
+            }
+
+            // 如果不匹配标准格式，将整行作为消息
+            return new LogEntry
+            {
+                Timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff zzz"),
+                Level = "LOG",
+                Message = line
+            };
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    /// <summary>
+    /// 读取文件所有行（支持共享读取）
+    /// </summary>
+    private async Task<string[]> ReadAllLinesAsync(string path)
+    {
+        var lines = new List<string>();
+        
+        using (var fileStream = new FileStream(
+            path, 
+            FileMode.Open, 
+            FileAccess.Read, 
+            FileShare.ReadWrite))
+        using (var streamReader = new StreamReader(fileStream))
+        {
+            string? line;
+            while ((line = await streamReader.ReadLineAsync()) != null)
+            {
+                lines.Add(line);
+            }
+        }
+        
+        return lines.ToArray();
+    }
+}
+
+/// <summary>
+/// 日志条目
+/// </summary>
+public class LogEntry
+{
+    /// <summary>
+    /// 时间戳
+    /// </summary>
+    public string Timestamp { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 日志级别
+    /// </summary>
+    public string Level { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 日志消息
+    /// </summary>
+    public string Message { get; set; } = string.Empty;
+}