Add consolidation for SSCs.

DiscImageChef.Server/Areas/Admin/Controllers/SscsController.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using DiscImageChef.CommonTypes.Metadata;
@@ -5,6 +6,7 @@ using DiscImageChef.Server.Models;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Newtonsoft.Json;
 
 namespace DiscImageChef.Server.Areas.Admin.Controllers
 {
@@ -48,5 +50,69 @@ namespace DiscImageChef.Server.Areas.Admin.Controllers
 
             return RedirectToAction(nameof(Index));
         }
+
+        public IActionResult Consolidate()
+        {
+            List<SscModel> dups = _context.Ssc.GroupBy(x => new
+            {
+                x.BlockSizeGranularity, x.MaxBlockLength, x.MinBlockLength
+            }).Where(x => x.Count() > 1).Select(x => new SscModel
+            {
+                BlockSizeGranularity = x.Key.BlockSizeGranularity, MaxBlockLength = x.Key.MaxBlockLength,
+                MinBlockLength       = x.Key.MinBlockLength
+            }).ToList();
+
+            return View(new SscModelForView
+            {
+                List = dups, Json = JsonConvert.SerializeObject(dups)
+            });
+        }
+
+        [HttpPost, ActionName("Consolidate"), ValidateAntiForgeryToken]
+        public IActionResult ConsolidateConfirmed(string models)
+        {
+            SscModel[] duplicates;
+
+            try
+            {
+                duplicates = JsonConvert.DeserializeObject<SscModel[]>(models);
+            }
+            catch(JsonSerializationException)
+            {
+                return BadRequest();
+            }
+
+            if(duplicates is null)
+                return BadRequest();
+
+            foreach(SscModel duplicate in duplicates)
+            {
+                Ssc master =
+                    _context.Ssc.FirstOrDefault(m => m.BlockSizeGranularity == duplicate.BlockSizeGranularity &&
+                                                     m.MaxBlockLength       == duplicate.MaxBlockLength       &&
+                                                     m.MinBlockLength       == duplicate.MinBlockLength);
+
+                if(master is null)
+                    continue;
+
+                foreach(Ssc ssc in _context.Ssc.Where(m => m.BlockSizeGranularity == duplicate.BlockSizeGranularity &&
+                                                           m.MaxBlockLength       == duplicate.MaxBlockLength       &&
+                                                           m.MinBlockLength       == duplicate.MinBlockLength).Skip(1).
+                                            ToArray())
+                {
+                    foreach(TestedSequentialMedia media in _context.TestedSequentialMedia.Where(d => d.SscId == ssc.Id))
+                    {
+                        media.SscId = master.Id;
+                    }
+
+                    _context.Ssc.Update(ssc);
+                    _context.Ssc.Remove(ssc);
+                }
+            }
+
+            _context.SaveChanges();
+
+            return RedirectToAction(nameof(Index));
+        }
     }
 }

DiscImageChef.Server/Areas/Admin/Views/Sscs/Consolidate.cshtml

@@ -0,0 +1,49 @@
+@model SscModelForView
+
+@{
+    ViewBag.Title = "Consolidate duplicate CHS";
+    Layout = "_Layout";
+}
+<h2>Consolidate duplicate SSC</h2>
+<div>
+    The following SSC have duplicates.
+    <table class="table">
+        <thead>
+        <tr>
+            <th>
+                @Html.DisplayNameFor(model => model.List[0].MinBlockLength)
+            </th>
+            <th>
+                @Html.DisplayNameFor(model => model.List[0].MaxBlockLength)
+            </th>
+            <th>
+                @Html.DisplayNameFor(model => model.List[0].BlockSizeGranularity)
+            </th>
+        </tr>
+        </thead>
+        <tbody>
+        @foreach (var item in Model.List)
+        {
+            <tr>
+                <td>
+                    @Html.DisplayFor(modelItem => item.MinBlockLength)
+                </td>
+                <td>
+                    @Html.DisplayFor(modelItem => item.MaxBlockLength)
+                </td>
+                <td>
+                    @Html.DisplayFor(modelItem => item.BlockSizeGranularity)
+                </td>
+            </tr>
+        }
+        </tbody>
+    </table>
+</div>
+<div>
+    Do you want to remove the duplicates?
+    <form asp-action="Consolidate" enctype="multipart/form-data">
+        <input type="hidden" asp-for="Json" name="models" />
+        <a asp-action="Index" class="btn btn-primary">Back to List</a>
+        <input class="btn btn-danger" type="submit" value="Consolidate" />
+    </form>
+</div>

DiscImageChef.Server/Areas/Admin/Views/Sscs/Index.cshtml

@@ -33,6 +33,9 @@
     // Copyright © 2011-2019 Natalia Portillo
     // ****************************************************************************/
 }
+<div>
+    <a asp-action="Consolidate" class="btn btn-danger">Consolidate duplicates</a>
+</div>
 <table class="table">
     <thead>
     <tr>

DiscImageChef.Server/Models/SscModel.cs

@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+
+namespace DiscImageChef.Server.Models
+{
+    public class SscModel
+    {
+        public byte? BlockSizeGranularity { get; set; }
+        public uint? MaxBlockLength       { get; set; }
+        public uint? MinBlockLength       { get; set; }
+    }
+
+    public class SscModelForView
+    {
+        public List<SscModel> List { get; set; }
+        public string         Json { get; set; }
+    }
+}