changed.对启动器重构的尝试

2026-06-21 16:14:28 +08:00 · 2026-05-28 15:14:37 +08:00
parent 1ef47c780b
commit 313d093257
51 changed files with 4509 additions and 2478 deletions
--- a/LanMountainDesktop.Launcher/Update/PendingUpdateDetector.cs
+++ b/LanMountainDesktop.Launcher/Update/PendingUpdateDetector.cs
@@ -0,0 +1,116 @@
+using System.Text.Json;
+using LanMountainDesktop.Launcher.Models;
+
+namespace LanMountainDesktop.Launcher.Update;
+
+internal sealed class PendingUpdateDetector(
+    DeploymentLocator deploymentLocator,
+    UpdateEnginePaths paths,
+    UpdateSignatureVerifier signatureVerifier)
+{
+    public LauncherResult CheckPendingUpdate()
+    {
+        if (File.Exists(paths.PlondsFileMapPath) && File.Exists(paths.PlondsSignaturePath))
+        {
+            var pdcFileMapText = File.ReadAllText(paths.PlondsFileMapPath);
+            var pdcFileMap = JsonSerializer.Deserialize(pdcFileMapText, AppJsonContext.Default.PlondsFileMap);
+            if (pdcFileMap is null)
+            {
+                return UpdateEngineResults.Failed("update.check", "invalid_manifest", "plonds-filemap.json is invalid.");
+            }
+
+            var pdcVerified = signatureVerifier.Verify(
+                paths.PlondsFileMapPath,
+                paths.PlondsSignaturePath,
+                UpdateEnginePaths.PlondsSignatureFileName);
+            if (!pdcVerified.Success)
+            {
+                return UpdateEngineResults.Failed("update.check", "signature_failed", pdcVerified.Message);
+            }
+
+            var pdcMetadata = PlondsManifestParser.LoadMetadata(paths.PlondsUpdateMetadataPath);
+            return new LauncherResult
+            {
+                Success = true,
+                Stage = "update.check",
+                Code = "available",
+                Message = "Pending PLONDS update is available.",
+                CurrentVersion = deploymentLocator.GetCurrentVersion(),
+                TargetVersion = PlondsManifestParser.ResolveTargetVersion(pdcFileMap, pdcMetadata)
+            };
+        }
+
+        if (!File.Exists(paths.FileMapPath) || !File.Exists(paths.ArchivePath))
+        {
+            return new LauncherResult
+            {
+                Success = true,
+                Stage = "update.check",
+                Code = "noop",
+                Message = "No pending update."
+            };
+        }
+
+        var fileMapText = File.ReadAllText(paths.FileMapPath);
+        var fileMap = JsonSerializer.Deserialize(fileMapText, AppJsonContext.Default.SignedFileMap);
+        if (fileMap is null)
+        {
+            return UpdateEngineResults.Failed("update.check", "invalid_manifest", "files.json is invalid.");
+        }
+
+        var verified = signatureVerifier.Verify(paths.FileMapPath, paths.SignaturePath, UpdateEnginePaths.SignatureFileName);
+        if (!verified.Success)
+        {
+            return UpdateEngineResults.Failed("update.check", "signature_failed", verified.Message);
+        }
+
+        return new LauncherResult
+        {
+            Success = true,
+            Stage = "update.check",
+            Code = "available",
+            Message = "Pending update is available.",
+            CurrentVersion = deploymentLocator.GetCurrentVersion(),
+            TargetVersion = fileMap.ToVersion
+        };
+    }
+
+    public LauncherResult ValidateIncomingState()
+    {
+        if (File.Exists(paths.ApplyLockPath))
+        {
+            return UpdateEngineResults.Failed("update.apply", "lock_conflict", "Another update apply operation is already in progress.");
+        }
+
+        if (!File.Exists(paths.DeploymentLockPath))
+        {
+            return UpdateEngineResults.Failed("update.apply", "staging_incomplete", "Deployment lock is missing. Please redownload the update.");
+        }
+
+        var hasPlondsMap = File.Exists(paths.PlondsFileMapPath);
+        var hasLegacyMap = File.Exists(paths.FileMapPath);
+        if (hasPlondsMap && !File.Exists(paths.DownloadMarkerPath))
+        {
+            return UpdateEngineResults.Failed("update.apply", "staging_incomplete", "Download marker is missing for pending PLONDS update.");
+        }
+
+        if (!hasPlondsMap && !hasLegacyMap)
+        {
+            return new LauncherResult
+            {
+                Success = true,
+                Stage = "update.apply",
+                Code = "noop",
+                Message = "No update payload found."
+            };
+        }
+
+        return new LauncherResult
+        {
+            Success = true,
+            Stage = "update.apply",
+            Code = "ok",
+            Message = "Incoming update state validated."
+        };
+    }
+}