Add button to recreate db

IntroSkipper/Configuration/configPage.html

@@ -714,6 +714,9 @@
                                         <input type="checkbox" id="eraseModeCacheCheckbox" style="margin-left: 10px" />
                                         <label for="eraseModeCacheCheckbox" style="margin-left: 5px">Erase global cached fingerprint files</label>
                                     </div>
+                                    <div>
+                                        <button is="emby-button" class="button-submit emby-button" id="btnRebuildDatabase">Rebuild database</button>
+                                    </div>
                                 </div>
                                 <br />
                                 <br />
@@ -758,6 +761,7 @@
                 var btnEraseRecapTimestamps = document.querySelector("button#btnEraseRecapTimestamps");
                 var btnEraseCreditTimestamps = document.querySelector("button#btnEraseCreditTimestamps");
                 var btnErasePreviewTimestamps = document.querySelector("button#btnErasePreviewTimestamps");
+                var btnRebuildDatabase = document.querySelector("button#btnRebuildDatabase");
 
                 // all plugin configuration fields that can be get or set with .value (i.e. strings or numbers).
                 var configurationFields = [
@@ -1504,6 +1508,9 @@
                     eraseTimestamps("Preview");
                     e.preventDefault();
                 });
+                btnRebuildDatabase.addEventListener("click", () => {
+                    fetchWithAuth("Intros/RebuildDatabase", "POST", null);
+                });
                 btnSeasonEraseTimestamps.addEventListener("click", () => {
                     Dashboard.confirm("Are you sure you want to erase all timestamps for this season?", "Confirm timestamp erasure", (result) => {
                         if (!result) {

IntroSkipper/Controllers/SkipIntroController.cs

@@ -251,6 +251,20 @@ public class SkipIntroController(MediaSegmentUpdateManager mediaSegmentUpdateMan
         return NoContent();
     }
 
+    /// <summary>
+    /// Rebuilds the database.
+    /// </summary>
+    /// <response code="204">Database rebuilt.</response>
+    /// <returns>No content.</returns>
+    [Authorize(Policy = Policies.RequiresElevation)]
+    [HttpPost("Intros/RebuildDatabase")]
+    public ActionResult RebuildDatabase()
+    {
+        using var db = new IntroSkipperDbContext(Plugin.Instance!.DbPath);
+        db.RebuildDatabase();
+        return NoContent();
+    }
+
     /// <summary>
     /// Gets the user interface configuration.
     /// </summary>

IntroSkipper/Db/IntroSkipperDbContext.cs

@@ -109,22 +109,52 @@ public class IntroSkipperDbContext : DbContext
     /// </summary>
     public void ApplyMigrations()
     {
-        // If migrations table exists, just apply pending migrations normally
-        if (Database.GetAppliedMigrations().Any() || !Database.CanConnect())
+        // If database doesn't exist or can't connect, create it with migrations
+        if (!Database.CanConnect())
+        {
+            Database.Migrate();
+            return;
+        }
+
+        // If migrations table exists, apply pending migrations normally
+        if (Database.GetAppliedMigrations().Any())
         {
             Database.Migrate();
             return;
         }
 
         // For databases without migration history
-        try
+        RebuildDatabase();
+    }
+
+    /// <summary>
+    /// Rebuilds the database while preserving valid segments and season information.
+    /// </summary>
+    public void RebuildDatabase()
     {
         // Backup existing data
-            List<DbSegment> segments;
+        List<DbSegment> segments = [];
+        List<DbSeasonInfo> seasonInfos = [];
         using (var db = new IntroSkipperDbContext(_dbPath))
+        {
+            try
             {
                 segments = [.. db.DbSegment.AsEnumerable().Where(s => s.ToSegment().Valid)];
             }
+            catch (Exception ex)
+            {
+                throw new InvalidOperationException("Failed to read DbSegment data", ex);
+            }
+
+            try
+            {
+                seasonInfos = [.. db.DbSeasonInfo];
+            }
+            catch (Exception ex)
+            {
+                throw new InvalidOperationException("Failed to read DbSeasonInfo data", ex);
+            }
+        }
 
         // Delete old database
         Database.EnsureDeleted();
@@ -134,14 +164,18 @@ public class IntroSkipperDbContext : DbContext
 
         // Restore the data
         using (var db = new IntroSkipperDbContext(_dbPath))
+        {
+            if (segments.Count > 0)
             {
                 db.DbSegment.AddRange(segments);
+            }
+
+            if (seasonInfos.Count > 0)
+            {
+                db.DbSeasonInfo.AddRange(seasonInfos);
+            }
+
             db.SaveChanges();
         }
     }
-        catch (Exception ex)
-        {
-            throw new InvalidOperationException("Failed to apply migrations", ex);
-        }
-    }
 }