Fix bugs

Signed-off-by: denis0001-dev <denis0001.dev@ya.ru>

utils/shared/src/commonMain/kotlin/com/pr0gramm3r101/utils/files/PlatformFileSystem.kt

@@ -0,0 +1,57 @@
+package com.pr0gramm3r101.utils.files
+
+/**
+ * Multiplatform file system API for basic file operations.
+ * Use [getAppCacheDirectory] to obtain the platform cache directory.
+ */
+object PlatformFileSystem {
+
+    /**
+     * Returns true if a file exists at the given path.
+     */
+    fun exists(path: String): Boolean = expectExists(path)
+
+    /**
+     * Writes [bytes] to the file at [path], overwriting if it exists.
+     */
+    fun writeBytes(path: String, bytes: ByteArray) {
+        expectWriteBytes(path, bytes)
+    }
+
+    /**
+     * Deletes the file at [path]. No-op if the file does not exist.
+     */
+    fun delete(path: String) {
+        expectDelete(path)
+    }
+
+    /**
+     * Deletes all files in the directory [dirPath] whose filename starts with [namePrefix].
+     */
+    fun deleteFilesWithPrefix(dirPath: String, namePrefix: String) {
+        expectDeleteFilesWithPrefix(dirPath, namePrefix)
+    }
+
+    /**
+     * Returns the platform-specific application cache directory path.
+     * On Android: context.cacheDir (requires UtilsLibrary.init to be called).
+     * On iOS: NSCachesDirectory.
+     */
+    fun getAppCacheDirectory(): String = expectGetAppCacheDirectory()
+
+    /**
+     * Creates the directory at [path] if it does not exist.
+     * Returns the absolute path.
+     */
+    fun ensureDirectory(path: String): String {
+        expectEnsureDirectory(path)
+        return path
+    }
+}
+
+internal expect fun expectExists(path: String): Boolean
+internal expect fun expectWriteBytes(path: String, bytes: ByteArray)
+internal expect fun expectDelete(path: String)
+internal expect fun expectDeleteFilesWithPrefix(dirPath: String, namePrefix: String)
+internal expect fun expectGetAppCacheDirectory(): String
+internal expect fun expectEnsureDirectory(path: String)