revanced-patches/src/main/kotlin/app/revanced/patches/tumblr/fixes/FixOldVersionsPatch.kt

package app.revanced.patches.tumblr.fixes

import app.revanced.patcher.data.BytecodeContext
import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
import app.revanced.patcher.patch.BytecodePatch
import app.revanced.patcher.patch.annotation.CompatiblePackage
import app.revanced.patcher.patch.annotation.Patch
import app.revanced.patches.tumblr.fixes.fingerprints.AddQueryParamFingerprint
import app.revanced.patches.tumblr.fixes.fingerprints.HttpPathParserFingerprint
import app.revanced.util.exception

@Patch(
    name = "Fix old versions",
    description = "Fixes old versions of the app (v33.2 and earlier) breaking due to Tumblr removing remnants of Tumblr" +
        " Live from the API, which causes many requests to fail. This patch has no effect on newer versions of the app.",
    compatiblePackages = [CompatiblePackage("com.tumblr")],
    use = false,
)
@Suppress("unused")
object FixOldVersionsPatch : BytecodePatch(
    setOf(HttpPathParserFingerprint, AddQueryParamFingerprint),
) {
    override fun execute(context: BytecodeContext) {
        val liveQueryParameters = listOf(
            ",?live_now",
            ",?live_streaming_user_id",
        )

        HttpPathParserFingerprint.result?.let {
            val endIndex = it.scanResult.patternScanResult!!.endIndex
            // Remove the live query parameters from the path when it's specified via a @METHOD annotation.
            for (liveQueryParameter in liveQueryParameters) {
                it.mutableMethod.addInstructions(
                    endIndex + 1,
                    """
                    # urlPath = urlPath.replace(liveQueryParameter, "")
                    const-string p1, "$liveQueryParameter"
                    const-string p3, ""
                    invoke-virtual {p2, p1, p3}, Ljava/lang/String;->replace(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;
                    move-result-object p2
                """,
                )
            }
        } ?: throw HttpPathParserFingerprint.exception

        AddQueryParamFingerprint.result?.let {
            // Remove the live query parameters when passed via a parameter which has the @Query annotation.
            // e.g. an API call could be defined like this:
            //  @GET("api/me/info")
            //  ApiResponse getCurrentUserInfo(@Query("fields[blog]") String value)
            // which would result in the path "api/me/inf0?fields[blog]=${value}"
            // Here we make sure that this value doesn't contain the broken query parameters.
            for (liveQueryParameter in liveQueryParameters) {
                it.mutableMethod.addInstructions(
                    0,
                    """
                    # queryParameterValue = queryParameterValue.replace(liveQueryParameter, "")
                    const-string v0, "$liveQueryParameter"
                    const-string v1, ""
                    invoke-virtual {p2, v0, v1}, Ljava/lang/String;->replace(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;
                    move-result-object p2
                """,
                )
            }
        } ?: throw AddQueryParamFingerprint.exception
    }
}