package me.eternal.purrfect.mapper.impl

import com.android.tools.smali.dexlib2.iface.instruction.formats.ArrayPayload
import me.eternal.purrfect.mapper.AbstractClassMapper
import me.eternal.purrfect.mapper.ext.getClassName
import me.eternal.purrfect.mapper.ext.getStaticConstructor
import me.eternal.purrfect.mapper.ext.isFinal

class BCryptClassMapper : AbstractClassMapper("BCryptClass") {
    val classReference = classReference("class")
    val hashMethod = string("hashMethod")

    init {
        mapper {
            for (clazz in classes) {
                if (!clazz.isFinal()) continue

                val isBcryptClass = clazz.getStaticConstructor()?.let { constructor ->
                    constructor.implementation?.instructions?.filterIsInstance<ArrayPayload>()?.any { it.arrayElements.size == 18 && it.arrayElements[0] == 608135816 }
                }

                if (isBcryptClass == true) {
                    val hashDexMethod = clazz.methods.first {
                        it.parameterTypes.size == 2 &&
                                it.parameterTypes[0] == "Ljava/lang/String;" &&
                                it.parameterTypes[1] == "Ljava/lang/String;" &&
                                it.returnType == "Ljava/lang/String;"
                    }

                    hashMethod.set(hashDexMethod.name)
                    classReference.set(clazz.getClassName())
                    return@mapper
                }
            }
        }
    }
}