From 9361ad31a79062ae2e22f8d42e567c5d2d040771 Mon Sep 17 00:00:00 2001
From: Kenta <106167071+Its-Kenta@users.noreply.github.com>
Date: Tue, 19 Sep 2023 19:42:53 +0100
Subject: [PATCH] Add Windows version of resourcePath. Add linker to definition
 file to fix duplicate symbol on compile

---
 build.gradle.kts                              |  2 +-
 .../kotlin/kaylibkit/kCore/KCore.mingw.kt     | 44 ++++++++++++++++++-
 src/nativeInterop/cinterop/kaylibc.def        |  2 +-
 3 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/build.gradle.kts b/build.gradle.kts
index bf9613d..60cd954 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -6,7 +6,7 @@ plugins {
 }
 
 group = "com.prism-architect"
-version = "1.0.4"
+version = "1.0.5"
 
 // Codeberg repository properties providers
 val tokenProvider: Provider<String> = providers.gradleProperty("KaylibKitToken")
diff --git a/src/mingwMain/kotlin/kaylibkit/kCore/KCore.mingw.kt b/src/mingwMain/kotlin/kaylibkit/kCore/KCore.mingw.kt
index 40373ad..039cf77 100644
--- a/src/mingwMain/kotlin/kaylibkit/kCore/KCore.mingw.kt
+++ b/src/mingwMain/kotlin/kaylibkit/kCore/KCore.mingw.kt
@@ -1,11 +1,51 @@
 package kaylibkit.kCore
-
 import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.addressOf
+import kotlinx.cinterop.pin
+import kotlinx.cinterop.toKString
+import platform.windows.*
 
 @OptIn(ExperimentalForeignApi::class)
 actual fun setTraceLogCallbackInternal(callback: TraceLogCallback) {
     kaylibc.SetTraceLogCallback(callback)
 }
 
+/**
+ * Returns the absolute path to the 'resources' folder located at the same location as your executable.
+ *
+ * This property provides the path to the 'resources' folder associated with your executable.
+ * Ensure that a folder named 'resources' is present in the same directory as your executable.
+ *
+ * @return The absolute path to the 'resources' folder, or null if it doesn't exist or cannot be determined.
+ */
+@OptIn(ExperimentalForeignApi::class)
 actual inline val resourcePath: String?
-    get() { return "Not yet implemented" }
\ No newline at end of file
+    get() {
+        try {
+            val buffer = ByteArray(MAX_PATH) // Create a buffer to store the path to the executable file.
+            val pathLength = GetModuleFileNameA(null, buffer.pin().addressOf(0), MAX_PATH.toUInt()) // Retrieves the fully qualified path for the executable
+
+            // Check if the path length is less than or equal to zero, indicating an error. Throw exception if error is found
+            if (pathLength.toInt() == 0) throw ResourcePathException("Failed to retrieve executable path.")
+
+            val executablePath = buffer.toKString() // Convert the buffer to a Kotlin string to get the full path to the executable.
+
+            // Find the index of the last slash character ('\\') in the executable path, which separates the directory from the executable file name.
+            val lastBackslashIndex = executablePath.lastIndexOf('\\')
+            if (lastBackslashIndex == -1) throw ResourcePathException("Invalid executable path format: $executablePath.")
+
+            // Extract the directory portion of the executable path
+            val executableDir = executablePath.substring(0, lastBackslashIndex + 1)
+            val resourceDir = executableDir + "resources" // Return the directory path of the executable file along with the "resources" subdirectory.
+
+            // Check if the "resources" directory exists
+            if (GetFileAttributesW(resourceDir) == INVALID_FILE_ATTRIBUTES) {
+                throw ResourcePathException("The 'resources' directory does not exist at: $resourceDir, unable to load resources.")
+            }
+
+            return resourceDir
+        } catch (e: ResourcePathException) {
+            println("ResourcePathException: ${e.message}")
+            return null
+        }
+    }
\ No newline at end of file
diff --git a/src/nativeInterop/cinterop/kaylibc.def b/src/nativeInterop/cinterop/kaylibc.def
index 7c44401..315db7e 100644
--- a/src/nativeInterop/cinterop/kaylibc.def
+++ b/src/nativeInterop/cinterop/kaylibc.def
@@ -6,7 +6,7 @@ libraryPaths.linux = src/nativeInterop/cinterop/lib/linux
 libraryPaths.mingw = src/nativeInterop/cinterop/lib/mingw
 
 compilerOpts = -Isrc/nativeInterop/cinterop/include
-linkerOpts.mingw = -lwinmm -lgdi32 -lopengl32 -lkernel32
+linkerOpts.mingw = -lwinmm -lgdi32 -lopengl32 -lkernel32 -Wl,--allow-multiple-definition
 linkerOpts.osx = -framework CoreVideo -framework IOKit -framework Cocoa -framework GLUT -framework OpenGL