From d3e396f7ecd3bcf2df30d2ba203b3548cf6ab5e0 Mon Sep 17 00:00:00 2001
From: Stefan Boberg <stefan@boberg.org>
Date: Tue, 17 Oct 2023 20:35:54 +0200
Subject: added command line option to start server clean (#481)

when specified with `--clean`, the data directory will be wiped clean at startup
---
 src/zenserver/zenserver.cpp | 68 +++++++++++++++++++++++++--------------------
 1 file changed, 38 insertions(+), 30 deletions(-)

(limited to 'src/zenserver/zenserver.cpp')

diff --git a/src/zenserver/zenserver.cpp b/src/zenserver/zenserver.cpp
index 9d51a581e..60950dbe3 100644
--- a/src/zenserver/zenserver.cpp
+++ b/src/zenserver/zenserver.cpp
@@ -308,53 +308,61 @@ ZenServer::InitializeState(const ZenServerOptions& ServerOptions)
 	bool		WipeState  = false;
 	std::string WipeReason = "Unspecified";
 
+	if (ServerOptions.IsCleanStart)
+	{
+		WipeState  = true;
+		WipeReason = "clean start requested";
+	}
+
 	bool				  UpdateManifest = false;
 	std::filesystem::path ManifestPath	 = m_DataRoot / "root_manifest";
-	FileContents		  ManifestData	 = ReadFile(ManifestPath);
 
-	if (ManifestData.ErrorCode)
+	if (!WipeState)
 	{
-		if (ServerOptions.IsFirstRun)
-		{
-			ZEN_INFO("Initializing state at '{}'", m_DataRoot);
+		FileContents ManifestData = ReadFile(ManifestPath);
 
-			UpdateManifest = true;
-		}
-		else
+		if (ManifestData.ErrorCode)
 		{
-			WipeState  = true;
-			WipeReason = fmt::format("No manifest present at '{}'", ManifestPath);
-		}
-	}
-	else
-	{
-		IoBuffer Manifest = ManifestData.Flatten();
-
-		if (CbValidateError ValidationResult = ValidateCompactBinary(Manifest, CbValidateMode::All);
-			ValidationResult != CbValidateError::None)
-		{
-			ZEN_WARN("Manifest validation failed: {}, state will be wiped", uint32_t(ValidationResult));
+			if (ServerOptions.IsFirstRun)
+			{
+				ZEN_INFO("Initializing state at '{}'", m_DataRoot);
 
-			WipeState  = true;
-			WipeReason = fmt::format("Validation of manifest at '{}' failed: {}", ManifestPath, uint32_t(ValidationResult));
+				UpdateManifest = true;
+			}
+			else
+			{
+				WipeState  = true;
+				WipeReason = fmt::format("No manifest present at '{}'", ManifestPath);
+			}
 		}
 		else
 		{
-			m_RootManifest = LoadCompactBinaryObject(Manifest);
+			IoBuffer Manifest = ManifestData.Flatten();
 
-			const int32_t ManifestVersion = m_RootManifest["schema_version"].AsInt32(0);
-
-			if (ManifestVersion != ZEN_CFG_SCHEMA_VERSION)
+			if (CbValidateError ValidationResult = ValidateCompactBinary(Manifest, CbValidateMode::All);
+				ValidationResult != CbValidateError::None)
 			{
+				ZEN_WARN("Manifest validation failed: {}, state will be wiped", uint32_t(ValidationResult));
+
 				WipeState  = true;
-				WipeReason = fmt::format("Manifest schema version: {}, differs from required: {}", ManifestVersion, ZEN_CFG_SCHEMA_VERSION);
+				WipeReason = fmt::format("Validation of manifest at '{}' failed: {}", ManifestPath, uint32_t(ValidationResult));
+			}
+			else
+			{
+				m_RootManifest = LoadCompactBinaryObject(Manifest);
+
+				const int32_t ManifestVersion = m_RootManifest["schema_version"].AsInt32(0);
+
+				if (ManifestVersion != ZEN_CFG_SCHEMA_VERSION)
+				{
+					WipeState = true;
+					WipeReason =
+						fmt::format("Manifest schema version: {}, differs from required: {}", ManifestVersion, ZEN_CFG_SCHEMA_VERSION);
+				}
 			}
 		}
 	}
 
-	// Release any open handles so we can overwrite the manifest
-	ManifestData = {};
-
 	// Handle any state wipe
 
 	if (WipeState)
-- 
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