Initial version

EonaCat.LogStack.Status/Pages/Analytics.cshtml.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.EntityFrameworkCore;
+using EonaCat.LogStack.Status.Data;
+using EonaCat.LogStack.Status.Models;
+using EonaCat.LogStack.Status.Services;
+
+namespace EonaCat.LogStack.Status.Pages;
+
+// This file is part of the EonaCat project(s) which is released under the Apache License.
+// See the LICENSE file or go to https://EonaCat.com/License for full license details.
+
+public class AnalyticsModel : PageModel
+{
+    private readonly DatabaseContext _db;
+    private readonly MonitoringService _monSvc;
+
+    public AnalyticsModel(DatabaseContext db, MonitoringService monSvc)
+    {
+        _db = db;
+        _monSvc = monSvc;
+    }
+
+    public List<UptimeReport> Reports { get; set; } = new();
+    /// <summary>Comma-separated response times (ms) for the last 30 checks - keyed by MonitorId.</summary>
+    public Dictionary<int, string> SparklineData { get; set; } = new();
+
+    public async Task<IActionResult> OnGetAsync()
+    {
+        if (HttpContext.Session.GetString("IsAdmin") != "true")
+        {
+            return RedirectToPage("/Admin/Login");
+        }
+
+        var monitors = await _db.Monitors.Where(m => m.IsActive).OrderBy(m => m.Name).ToListAsync();
+
+        foreach (var m in monitors)
+        {
+            var report = await _monSvc.GetUptimeReportAsync(m.Id);
+            Reports.Add(report);
+
+            // Last 30 response times for sparkline
+            var recent = await _db.MonitorChecks
+                .Where(c => c.MonitorId == m.Id)
+                .OrderByDescending(c => c.CheckedAt)
+                .Take(30)
+                .Select(c => c.ResponseMs)
+                .ToListAsync();
+
+            recent.Reverse();
+            SparklineData[m.Id] = string.Join(",", recent.Select(v => ((int)v).ToString()));
+        }
+
+        return Page();
+    }
+}