From dd1ccc6259059b20608a103f0962b0f46cbae971 Mon Sep 17 00:00:00 2001
From: Matthew Nelson <developer@matthewnelson.io>
Date: Sat, 2 Mar 2024 07:43:32 -0500
Subject: [PATCH] Fix SysTempDir for Android API 15 and below

---
 .../test/android/SysTempDirAndroidTest.kt     | 32 +++++++++++++
 .../kmp/file/internal/-JvmPlatform.kt         | 46 +++++++++++++++++--
 2 files changed, 74 insertions(+), 4 deletions(-)
 create mode 100644 library/file-test-android/src/androidInstrumentedTest/kotlin/io/matthewnelson/kmp/file/test/android/SysTempDirAndroidTest.kt

diff --git a/library/file-test-android/src/androidInstrumentedTest/kotlin/io/matthewnelson/kmp/file/test/android/SysTempDirAndroidTest.kt b/library/file-test-android/src/androidInstrumentedTest/kotlin/io/matthewnelson/kmp/file/test/android/SysTempDirAndroidTest.kt
new file mode 100644
index 0000000..e8a20f5
--- /dev/null
+++ b/library/file-test-android/src/androidInstrumentedTest/kotlin/io/matthewnelson/kmp/file/test/android/SysTempDirAndroidTest.kt
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2024 Matthew Nelson
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+package io.matthewnelson.kmp.file.test.android
+
+import android.app.Application
+import androidx.test.core.app.ApplicationProvider
+import io.matthewnelson.kmp.file.SysTempDir
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class SysTempDirAndroidTest {
+
+    private val ctx = ApplicationProvider.getApplicationContext<Application>()
+
+    @Test
+    fun givenAndroidRuntime_whenSysTempDir_thenIsSameAsCacheDir() {
+        assertEquals(ctx.cacheDir, SysTempDir)
+    }
+}
diff --git a/library/file/src/jvmMain/kotlin/io/matthewnelson/kmp/file/internal/-JvmPlatform.kt b/library/file/src/jvmMain/kotlin/io/matthewnelson/kmp/file/internal/-JvmPlatform.kt
index 72bf32e..f4bded4 100644
--- a/library/file/src/jvmMain/kotlin/io/matthewnelson/kmp/file/internal/-JvmPlatform.kt
+++ b/library/file/src/jvmMain/kotlin/io/matthewnelson/kmp/file/internal/-JvmPlatform.kt
@@ -15,9 +15,11 @@
  **/
 package io.matthewnelson.kmp.file.internal
 
+import io.matthewnelson.kmp.file.ANDROID
 import io.matthewnelson.kmp.file.IOException
 import io.matthewnelson.kmp.file.toFile
 import java.io.File
+import kotlin.io.resolve
 import kotlin.io.readText as _readText
 import kotlin.io.readBytes as _readBytes
 import kotlin.io.resolve as _resolve
@@ -27,10 +29,46 @@ import kotlin.io.writeText as _writeText
 @Suppress("NOTHING_TO_INLINE")
 internal actual inline fun platformDirSeparator(): Char = File.separatorChar
 
-@Suppress("NOTHING_TO_INLINE")
-internal actual inline fun platformTempDirectory(): File = System
-    .getProperty("java.io.tmpdir")
-    .toFile()
+@Suppress("NOTHING_TO_INLINE", "SdCardPath")
+internal actual inline fun platformTempDirectory(): File {
+    val jTemp = System
+        .getProperty("java.io.tmpdir")
+        .toFile()
+
+    return ANDROID.SDK_INT?.let { sdk ->
+        if (sdk > 15) return@let null
+
+        // java.io.tmpdir=/sdcard
+        if (
+            !jTemp.path.startsWith("/data")
+            || jTemp.path.startsWith("/sdcard")
+        ) {
+            // dexmaker.dexcache=/data/data/com.example.app/app_dxmaker_cache
+            val parent = System.getProperty("dexmaker.dexcache")
+                ?.toFile()
+                ?.parentFile
+                ?: return@let null
+
+            try {
+                if (!parent.exists()) return@let null
+            } catch (_: Throwable) {
+                return@let null
+            }
+
+            val cacheDir = parent.resolve("cache")
+
+            try {
+                if (!cacheDir.exists() && !cacheDir.mkdirs()) return@let null
+            } catch (_: Throwable) {
+                return@let null
+            }
+
+            cacheDir
+        } else {
+            null
+        }
+    } ?: jTemp
+}
 
 internal actual val IsWindows: Boolean = System.getProperty("os.name")
     ?.ifBlank { null }