add: resource patcher

Signed-off-by: oSumAtrIX <johan.melkonyan1@web.de>

src/main/kotlin/app/revanced/cli/Patcher.kt

@@ -0,0 +1,96 @@
+package app.revanced.cli
+
+import app.revanced.patch.PatchLoader
+import app.revanced.patch.Patches
+import app.revanced.patcher.data.base.Data
+import app.revanced.patcher.patch.base.Patch
+import app.revanced.utils.filesystem.FileSystemUtils
+import app.revanced.utils.signing.Signer
+import java.io.File
+
+internal class Patcher {
+    internal companion object {
+        internal fun run() {
+            val patcher = app.revanced.patcher.Patcher(
+                MainCommand.inputFile,
+                MainCommand.cacheDirectory,
+                MainCommand.patchResources
+            )
+
+            // merge files like necessary integrations
+            patcher.addFiles(MainCommand.mergeFiles)
+            // add patches, but filter incompatible or excluded patches
+            patcher.addPatchesFiltered()
+            // apply patches
+            for (patchResult in patcher.applyPatches {
+                println("Applying: $it")
+            }) {
+                println(patchResult)
+            }
+
+            // write output file
+            val outFile = File(MainCommand.outputPath)
+            if (outFile.exists()) outFile.delete()
+            MainCommand.inputFile.copyTo(outFile)
+
+            val zipFileSystem = FileSystemUtils(outFile)
+
+            // replace all dex files
+            for ((name, data) in patcher.save()) {
+                zipFileSystem.replaceFile(name, data.data)
+            }
+
+            if (MainCommand.patchResources) {
+                for (file in File(MainCommand.cacheDirectory).resolve("build/").listFiles().first().listFiles()) {
+                    if (!file.isDirectory) {
+                        zipFileSystem.replaceFile(file.name, file.readBytes())
+                        continue
+                    }
+                    zipFileSystem.replaceDirectory(file)
+                }
+            }
+
+            // finally close the stream
+            zipFileSystem.close()
+
+            // and sign the apk file
+            Signer.signApk(outFile)
+        }
+
+        private fun app.revanced.patcher.Patcher.addPatchesFiltered() {
+            // TODO: get package metadata (outside of this method) for apk file which needs to be patched
+            val packageName = this.packageName
+            val packageVersion = this.packageVersion
+
+            val checkInclude = MainCommand.includedPatches.isNotEmpty()
+
+            MainCommand.patchBundles.forEach { bundle ->
+                PatchLoader.injectPatches(bundle)
+                val includedPatches = mutableListOf<Patch<Data>>()
+                Patches.loadPatches().forEach patch@{
+                    val patch = it()
+
+                    // TODO: filter out incompatible patches with package metadata
+                    val filterOutPatches = true
+                    if (filterOutPatches && !patch.metadata.compatiblePackages.any { packageMetadata ->
+                            packageMetadata.name == packageName && packageMetadata.versions.any {
+                                it == packageVersion
+                            }
+                        }) {
+                        // TODO: report to stdout
+                        return@patch
+                    }
+
+                    if (checkInclude && !MainCommand.includedPatches.contains(patch.metadata.shortName)) {
+                        return@patch
+                    }
+
+                    // TODO: report to stdout
+                    includedPatches.add(patch)
+
+                }
+                this.addPatches(includedPatches)
+            }
+        }
+    }
+}