diff --git a/src/main/kotlin/net/revanced/patcher/Patcher.kt b/src/main/kotlin/net/revanced/patcher/Patcher.kt
index e823b6e..b5a1a07 100644
--- a/src/main/kotlin/net/revanced/patcher/Patcher.kt
+++ b/src/main/kotlin/net/revanced/patcher/Patcher.kt
@@ -1,26 +1,35 @@
 package net.revanced.patcher
-
-import net.revanced.patcher.version.YTVersion
+import net.revanced.patcher.patch.Patch
+import net.revanced.patcher.signatures.Signature
+import net.revanced.patcher.sigscan.SignatureScanner
 import org.jf.dexlib2.DexFileFactory
+import org.jf.dexlib2.dexbacked.DexBackedDexFile
+import org.jf.dexlib2.dexbacked.DexBackedMethod
+import org.jf.dexlib2.iface.DexFile
 import java.io.File
+import kotlin.math.sign
 
-/**
- * Creates a patcher.
- *
- * @param input the input dex file
- * @param output the output dex file
- * @param version the YT version of this dex file
- */
-class Patcher(private val input: File, private val output: File, private val version: YTVersion) {
-    // setting opcodes to null causes it to autodetect, perfect!
-    private val dexFile = DexFileFactory.loadDexFile(input, null)
+class Patcher(private val dexFilePath: File) {
+    private lateinit var patches: MutableList<Patch>;
+    private lateinit var methodCache: List<DexBackedMethod>;
 
-    /**
-     * Runs the patcher.
-     */
-    fun run() {
+    private var dexFile: DexFile = DexFileFactory.loadDexFile(dexFilePath, null);
 
+    fun writeDexFile(path: String) {
+        DexFileFactory.writeDexFile(path, dexFile)
     }
-}
 
+    fun addPatch(patch: Patch) {
+        patches.add(patch)
+    }
 
+    fun addSignatures(vararg signatures: Signature) {
+        methodCache = SignatureScanner(dexFile.classes.flatMap { classDef -> classDef.methods }).resolve(signatures)
+    }
+
+    fun execute() {
+        patches.forEach{ patch ->
+            patch.Execute();
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/net/revanced/patcher/patch/Patch.kt b/src/main/kotlin/net/revanced/patcher/patch/Patch.kt
new file mode 100644
index 0000000..5beea98
--- /dev/null
+++ b/src/main/kotlin/net/revanced/patcher/patch/Patch.kt
@@ -0,0 +1,7 @@
+package net.revanced.patcher.patch
+
+class Patch {
+    fun Execute(){
+        TODO()
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/net/revanced/patcher/sigscan/SignatureScanner.kt b/src/main/kotlin/net/revanced/patcher/sigscan/SignatureScanner.kt
index c8eed28..d090bbe 100644
--- a/src/main/kotlin/net/revanced/patcher/sigscan/SignatureScanner.kt
+++ b/src/main/kotlin/net/revanced/patcher/sigscan/SignatureScanner.kt
@@ -1,10 +1,12 @@
 package net.revanced.patcher.sigscan
 
 import net.revanced.patcher.signatures.Signature
-import org.jf.dexlib2.iface.ClassDef
+import org.jf.dexlib2.dexbacked.DexBackedMethod
+import org.jf.dexlib2.iface.Method
 
-class SignatureScanner(signature: Signature) {
-    fun scan(classes: Array<ClassDef>) {
 
+class SignatureScanner(methods: List<Method>) {
+    fun resolve(signature: Array<out Signature>) : List<DexBackedMethod> {
+        TODO()
     }
 }
\ No newline at end of file