revanced-patches-ex/src/main/kotlin/app/revanced/extensions/Extensions.kt

package app.revanced.extensions

import app.revanced.patcher.data.BytecodeContext
import app.revanced.patcher.extensions.MethodFingerprintExtensions.name
import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
import app.revanced.patcher.patch.PatchResultError
import app.revanced.patcher.util.proxy.mutableTypes.MutableClass
import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
import org.jf.dexlib2.iface.Method
import org.jf.dexlib2.util.MethodUtil
import org.w3c.dom.Node

// TODO: populate this to all patches
/**
 * Convert a [MethodFingerprint] to a [PatchResultError].
 *
 * @return A [PatchResultError] for the [MethodFingerprint].
 */
fun MethodFingerprint.toErrorResult() = PatchResultError("Failed to resolve $name")

/**
 * Find the [MutableMethod] from a given [Method] in a [MutableClass].
 *
 * @param method The [Method] to find.
 * @return The [MutableMethod].
 */
fun MutableClass.findMutableMethodOf(method: Method) = this.methods.first {
    MethodUtil.methodSignaturesMatch(it, method)
}

/**
 * traverse the class hierarchy starting from the given root class
 *
 * @param targetClass the class to start traversing the class hierarchy from
 * @param callback function that is called for every class in the hierarchy
 */
fun BytecodeContext.traverseClassHierarchy(targetClass: MutableClass, callback: MutableClass.() -> Unit) {
    callback(targetClass)
    this.findClass(targetClass.superclass ?: return)?.mutableClass?.let {
        traverseClassHierarchy(it, callback)
    }
}

/**
 * apply a transform to all methods of the class
 *
 * @param transform the transformation function. original method goes in, transformed method goes out
 */
fun MutableClass.transformMethods(transform: MutableMethod.() -> MutableMethod) {
    val transformedMethods = methods.map { it.transform() }
    methods.clear()
    methods.addAll(transformedMethods)
}

internal fun Node.doRecursively(action: (Node) -> Unit) {
    action(this)
    for (i in 0 until this.childNodes.length) this.childNodes.item(i).doRecursively(action)
}