轮播应用OK

src/DRS9.Dashboard.Server/Controllers/RotatorViewerController.cs

@@ -0,0 +1,86 @@
+using DRS9.Dashboard.Application.DTOs;
+using DRS9.Dashboard.Application.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace DRS9.Dashboard.Server.Controllers;
+
+/// <summary>
+/// 轮播显示控制器 - 供设备客户端使用
+/// </summary>
+[Route("rotator")]
+public class RotatorViewerController : Controller
+{
+    private readonly RotatorItemService _rotatorItemService;
+    private readonly IHttpContextAccessor _httpContextAccessor;
+    private readonly ILogger<RotatorViewerController> _logger;
+
+    public RotatorViewerController(
+        RotatorItemService rotatorItemService,
+        IHttpContextAccessor httpContextAccessor,
+        ILogger<RotatorViewerController> logger)
+    {
+        _rotatorItemService = rotatorItemService;
+        _httpContextAccessor = httpContextAccessor;
+        _logger = logger;
+    }
+
+    /// <summary>
+    /// 获取指定应用的轮播配置 (JSON)
+    /// </summary>
+    [HttpGet("{applicationId}/config.json")]
+    public async Task<ActionResult> GetConfig(int applicationId)
+    {
+        try
+        {
+            var items = await _rotatorItemService.GetByApplicationIdAsync(applicationId);
+
+            // 只返回启用的项目
+            var enabledItems = items.Where(i => i.IsEnabled).OrderBy(i => i.Order).ToList();
+
+            var config = new
+            {
+                urls = enabledItems.Select(i => GetAbsoluteUrl(i.Url)).ToList(),
+                switchIntervals = enabledItems.Select(i => i.Duration).ToList()
+            };
+
+            return Json(config);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "获取轮播配置失败: ApplicationId={ApplicationId}", applicationId);
+            return Json(new { urls = new List<string>(), switchIntervals = new List<int>() });
+        }
+    }
+
+    /// <summary>
+    /// 显示轮播页面
+    /// </summary>
+    [HttpGet("{applicationId}")]
+    public IActionResult ViewRotator(int applicationId)
+    {
+        return View(applicationId);
+    }
+
+    private string GetAbsoluteUrl(string relativeOrAbsoluteUrl)
+    {
+        if (string.IsNullOrWhiteSpace(relativeOrAbsoluteUrl))
+            return string.Empty;
+
+        // 如果已经是绝对 URL，直接返回
+        if (relativeOrAbsoluteUrl.StartsWith("http://", StringComparison.OrdinalIgnoreCase) ||
+            relativeOrAbsoluteUrl.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
+        {
+            return relativeOrAbsoluteUrl;
+        }
+
+        // 转换为绝对 URL
+        var request = _httpContextAccessor.HttpContext?.Request;
+        if (request != null)
+        {
+            var baseUrl = $"{request.Scheme}://{request.Host}";
+            return relativeOrAbsoluteUrl.StartsWith("/") ? baseUrl + relativeOrAbsoluteUrl : baseUrl + "/" + relativeOrAbsoluteUrl;
+        }
+
+        return relativeOrAbsoluteUrl;
+    }
+}