From d86b70e0063743a9b7107e4712f7456594405e7b Mon Sep 17 00:00:00 2001
From: Jan Laupetin <jan@laupetin.net>
Date: Sat, 11 Oct 2025 18:56:11 +0100
Subject: [PATCH] feat: unlink fastfiles via ModMan

---
 src/ModMan/Web/Binds/Binds.cpp            |  2 +
 src/ModMan/Web/Binds/UnlinkingBinds.cpp   | 93 +++++++++++++++++++++++
 src/ModMan/Web/Binds/UnlinkingBinds.h     |  8 ++
 src/ModMan/Web/Binds/ZoneBinds.cpp        |  7 +-
 src/ModManUi/src/App.vue                  | 69 ++++++++++++++---
 src/ModManUi/src/native/UnlinkingBinds.ts |  3 +
 src/ModManUi/src/native/ZoneBinds.ts      |  2 +-
 src/ModManUi/src/native/index.ts          |  3 +-
 8 files changed, 174 insertions(+), 13 deletions(-)
 create mode 100644 src/ModMan/Web/Binds/UnlinkingBinds.cpp
 create mode 100644 src/ModMan/Web/Binds/UnlinkingBinds.h
 create mode 100644 src/ModManUi/src/native/UnlinkingBinds.ts

diff --git a/src/ModMan/Web/Binds/Binds.cpp b/src/ModMan/Web/Binds/Binds.cpp
index 94bd2ec5..7ae5ab9c 100644
--- a/src/ModMan/Web/Binds/Binds.cpp
+++ b/src/ModMan/Web/Binds/Binds.cpp
@@ -1,5 +1,6 @@
 #include "Binds.h"
 
+#include "UnlinkingBinds.h"
 #include "Web/Binds/DialogBinds.h"
 #include "ZoneBinds.h"
 
@@ -8,6 +9,7 @@ namespace ui
     void RegisterAllBinds(webview::webview& wv)
     {
         RegisterDialogHandlerBinds(wv);
+        RegisterUnlinkingBinds(wv);
         RegisterZoneBinds(wv);
     }
 } // namespace ui
diff --git a/src/ModMan/Web/Binds/UnlinkingBinds.cpp b/src/ModMan/Web/Binds/UnlinkingBinds.cpp
new file mode 100644
index 00000000..bc281dcf
--- /dev/null
+++ b/src/ModMan/Web/Binds/UnlinkingBinds.cpp
@@ -0,0 +1,93 @@
+#include "UnlinkingBinds.h"
+
+#include "Context/ModManContext.h"
+#include "IObjWriter.h"
+#include "SearchPath/OutputPathFilesystem.h"
+#include "SearchPath/SearchPaths.h"
+#include "Utils/PathUtils.h"
+#include "Web/UiCommunication.h"
+
+#include "Json/JsonExtension.h"
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+namespace
+{
+    class ZoneLoadedDto
+    {
+    public:
+        std::string zoneName;
+        std::string filePath;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(ZoneLoadedDto, zoneName, filePath);
+
+    class ZoneUnloadedDto
+    {
+    public:
+        std::string zoneName;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(ZoneUnloadedDto, zoneName);
+
+    result::Expected<NoResult, std::string> UnlinkZoneInDbThread(const std::string& zoneName)
+    {
+        const auto& context = ModManContext::Get().m_fast_file;
+        const auto existingZone = std::ranges::find_if(context.m_loaded_zones,
+                                                       [&zoneName](const std::unique_ptr<Zone>& zone)
+                                                       {
+                                                           return zone->m_name == zoneName;
+                                                       });
+
+        if (existingZone == context.m_loaded_zones.end())
+            return result::Unexpected(std::format("No zone with name {} loaded", zoneName));
+
+        const auto& zone = *existingZone->get();
+
+        const auto* objWriter = IObjWriter::GetObjWriterForGame(zone.m_game_id);
+
+        const auto outputFolderPath = fs::path(utils::GetExecutablePath()).parent_path() / "zone_dump" / zoneName;
+        const auto outputFolderPathStr = outputFolderPath.string();
+
+        OutputPathFilesystem outputFolderOutputPath(outputFolderPath);
+        SearchPaths searchPaths;
+        AssetDumpingContext dumpingContext(zone, outputFolderPathStr, outputFolderOutputPath, searchPaths);
+        objWriter->DumpZone(dumpingContext);
+
+        return NoResult();
+    }
+
+    void UnlinkZone(webview::webview& wv, std::string id, std::string zoneName) // NOLINT(performance-unnecessary-value-param) Copy is made for thread safety
+    {
+        ModManContext::Get().m_db_thread.Dispatch(
+            [&wv, id, zoneName]
+            {
+                auto result = UnlinkZoneInDbThread(zoneName);
+
+                if (result)
+                {
+                    con::debug("Unlinked zone \"{}\"", zoneName);
+                    ui::PromiseResolve(wv, id, true);
+                }
+                else
+                {
+                    con::warn("Failed to unlink zone \"{}\": {}", zoneName, result.error());
+                    ui::PromiseReject(wv, id, std::move(result).error());
+                }
+            });
+    }
+} // namespace
+
+namespace ui
+{
+    void RegisterUnlinkingBinds(webview::webview& wv)
+    {
+        BindAsync<std::string>(wv,
+                               "unlinkZone",
+                               [&wv](const std::string& id, std::string zoneName)
+                               {
+                                   UnlinkZone(wv, id, std::move(zoneName));
+                               });
+    }
+} // namespace ui
diff --git a/src/ModMan/Web/Binds/UnlinkingBinds.h b/src/ModMan/Web/Binds/UnlinkingBinds.h
new file mode 100644
index 00000000..4169a780
--- /dev/null
+++ b/src/ModMan/Web/Binds/UnlinkingBinds.h
@@ -0,0 +1,8 @@
+#pragma once
+
+#include "Web/WebViewLib.h"
+
+namespace ui
+{
+    void RegisterUnlinkingBinds(webview::webview& wv);
+} // namespace ui
diff --git a/src/ModMan/Web/Binds/ZoneBinds.cpp b/src/ModMan/Web/Binds/ZoneBinds.cpp
index 4291a1d1..8882a7d0 100644
--- a/src/ModMan/Web/Binds/ZoneBinds.cpp
+++ b/src/ModMan/Web/Binds/ZoneBinds.cpp
@@ -33,7 +33,12 @@ namespace
 
                 if (maybeZone)
                 {
-                    ui::PromiseResolve(wv, id, true);
+                    ui::PromiseResolve(wv,
+                                       id,
+                                       ZoneLoadedDto{
+                                           .zoneName = maybeZone.value()->m_name,
+                                           .filePath = path,
+                                       });
                     con::debug("Loaded zone \"{}\"", maybeZone.value()->m_name);
                 }
                 else
diff --git a/src/ModManUi/src/App.vue b/src/ModManUi/src/App.vue
index 0da45521..8c4a4dc1 100644
--- a/src/ModManUi/src/App.vue
+++ b/src/ModManUi/src/App.vue
@@ -1,21 +1,29 @@
 <script setup lang="ts">
-import { ref } from "vue";
+import { computed, ref } from "vue";
 import { webviewBinds } from "@/native";
 import { useZoneStore } from "@/stores/ZoneStore";
 import SpinningLoader from "@/components/SpinningLoader.vue";
 
 const zoneStore = useZoneStore();
-const lastPath = ref("");
 const loadingFastFile = ref(false);
+const unlinkingFastFile = ref(false);
 
-async function onOpenFastfileClick() {
-  lastPath.value =
-    (await webviewBinds.openFileDialog({ filters: [{ name: "Fastfiles", filter: "*.ff" }] })) ?? "";
+const performingAction = computed<boolean>(() => loadingFastFile.value || unlinkingFastFile.value);
+
+async function openFastFileSelect() {
+  return await webviewBinds.openFileDialog({ filters: [{ name: "Fastfiles", filter: "*.ff" }] });
+}
+
+async function onOpenFastFileClick() {
+  if (performingAction.value) return;
+
+  const fastFilePath = await openFastFileSelect();
+  if (!fastFilePath) return;
 
   loadingFastFile.value = true;
 
   webviewBinds
-    .loadFastFile(lastPath.value)
+    .loadFastFile(fastFilePath)
     .catch((e: string) => {
       console.error("Failed to load fastfile:", e);
     })
@@ -24,6 +32,36 @@ async function onOpenFastfileClick() {
     });
 }
 
+async function onUnlinkFastFileClick() {
+  if (performingAction.value) return;
+
+  const fastFilePath = await openFastFileSelect();
+  if (!fastFilePath) return;
+
+  try {
+    unlinkingFastFile.value = true;
+
+    let loadedZoneName: string;
+    try {
+      loadedZoneName = (await webviewBinds.loadFastFile(fastFilePath)).zoneName;
+    } catch (e: unknown) {
+      console.error("Failed to load fastfile:", e as string);
+      return;
+    }
+
+    try {
+      await webviewBinds.unlinkZone(loadedZoneName);
+    } catch (e: unknown) {
+      console.error("Failed to unlink fastfile:", e as string);
+      return;
+    } finally {
+      webviewBinds.unloadZone(loadedZoneName);
+    }
+  } finally {
+    unlinkingFastFile.value = false;
+  }
+}
+
 function onUnloadClicked(zoneName: string) {
   webviewBinds.unloadZone(zoneName).catch((e: string) => {
     console.error("Failed to unload zone:", e);
@@ -36,18 +74,23 @@ function onUnloadClicked(zoneName: string) {
     <h1>Welcome to ModMan</h1>
     <small>Nothing to see here yet, this is mainly for testing</small>
 
-    <p>
-      <button :disabled="loadingFastFile" @click="onOpenFastfileClick">
+    <div class="actions">
+      <button :disabled="performingAction" @click="onOpenFastFileClick">
         <SpinningLoader v-if="loadingFastFile" class="loading" />
         <span>Load fastfile</span>
       </button>
-    </p>
+      <button :disabled="performingAction" @click="onUnlinkFastFileClick">
+        <SpinningLoader v-if="unlinkingFastFile" class="loading" />
+        <span>Unlink fastfile</span>
+      </button>
+    </div>
+
     <div>
       <h3>Loaded zones:</h3>
       <div class="zone-list">
         <div v-for="zone in zoneStore.loadedZones" :key="zone" class="zone">
           <span>{{ zone }}</span>
-          <button @click="onUnloadClicked(zone)">Unload</button>
+          <button :disabled="performingAction" @click="onUnloadClicked(zone)">Unload</button>
         </div>
       </div>
     </div>
@@ -55,6 +98,12 @@ function onUnloadClicked(zoneName: string) {
 </template>
 
 <style scoped>
+.actions {
+  display: flex;
+  justify-content: center;
+  column-gap: 0.5em;
+}
+
 .loading {
   margin-right: 0.2em;
 }
diff --git a/src/ModManUi/src/native/UnlinkingBinds.ts b/src/ModManUi/src/native/UnlinkingBinds.ts
new file mode 100644
index 00000000..8fe73c71
--- /dev/null
+++ b/src/ModManUi/src/native/UnlinkingBinds.ts
@@ -0,0 +1,3 @@
+export interface UnlinkingBinds {
+  unlinkZone(zoneName: string): Promise<void>;
+}
diff --git a/src/ModManUi/src/native/ZoneBinds.ts b/src/ModManUi/src/native/ZoneBinds.ts
index b95307bf..e0636061 100644
--- a/src/ModManUi/src/native/ZoneBinds.ts
+++ b/src/ModManUi/src/native/ZoneBinds.ts
@@ -8,7 +8,7 @@ export interface ZoneUnloadedDto {
 }
 
 export interface ZoneBinds {
-  loadFastFile(path: string): Promise<void>;
+  loadFastFile(path: string): Promise<ZoneLoadedDto>;
   unloadZone(zoneName: string): Promise<void>;
 }
 
diff --git a/src/ModManUi/src/native/index.ts b/src/ModManUi/src/native/index.ts
index c055a7c5..dc455af9 100644
--- a/src/ModManUi/src/native/index.ts
+++ b/src/ModManUi/src/native/index.ts
@@ -1,7 +1,8 @@
 import type { DialogBinds } from "./DialogBinds";
+import type { UnlinkingBinds } from "./UnlinkingBinds";
 import type { ZoneBinds, ZoneEventMap } from "./ZoneBinds";
 
-export type NativeMethods = DialogBinds & ZoneBinds;
+export type NativeMethods = DialogBinds & UnlinkingBinds & ZoneBinds;
 
 type NativeEventMap = ZoneEventMap;