#!/system/bin/sh

grep_prop() {
    local REGEX="s/^$1=//p"
    shift
    local FILES=$@
    [[ -z "$FILES" ]] && FILES='/system/build.prop'
    sed -n "$REGEX" ${FILES} 2>/dev/null | head -n 1
}

MODDIR=${0%/*}
RIRU_PATH="/data/misc/riru"
TARGET="${RIRU_PATH}/modules/edxp"
EDXP_VERSION=$(grep_prop version ${MODDIR}/module.prop)
ANDROID_SDK=$(getprop ro.build.version.sdk)
BUILD_DESC=$(getprop ro.build.description)
PRODUCT=$(getprop ro.build.product)
MODEL=$(getprop ro.product.model)
MANUFACTURER=$(getprop ro.product.manufacturer)
BRAND=$(getprop ro.product.brand)
FINGERPRINT=$(getprop ro.build.fingerprint)
ARCH=$(getprop ro.product.cpu.abi)
DEVICE=$(getprop ro.product.device)
ANDROID=$(getprop ro.build.version.release)
BUILD=$(getprop ro.build.id)
RIRU_VERSION=$(grep_prop version ${MODDIR}/../riru-core/module.prop)
RIRU_VERCODE=$(grep_prop versionCode ${MODDIR}/../riru-core/module.prop)
RIRU_APICODE=$(cat /data/misc/riru/api_version)
MAGISK_VERSION=$(su -v)
MAGISK_VERCODE=$(su -V)
EDXP_MANAGER="org.meowcat.edxposed.manager"
XP_INSTALLER="de.robv.android.xposed.installer"
PATH_PREFIX_PROT="/data/user_de/0/"
PATH_PREFIX_LEGACY="/data/user/0/"

sepolicy() {
    # necessary for using mmap in system_server process
    supolicy --live "allow system_server system_server process {execmem}"
    supolicy --live "allow system_server system_server memprotect {mmap_zero}"

    # for built-in apps // TODO maybe narrow down the target classes
    supolicy --live "allow coredomain coredomain process {execmem}"

    # read configs set in our app
    supolicy --live "allow coredomain app_data_file * *"
    supolicy --live "attradd {system_app platform_app} mlstrustedsubject"

    # read module apk file in zygote
    supolicy --live "allow zygote apk_data_file * *"
}

if [[ ${ANDROID_SDK} -ge 24 ]]; then
    PATH_PREFIX="${PATH_PREFIX_PROT}"
else
    PATH_PREFIX="${PATH_PREFIX_LEGACY}"
fi

DEFAULT_BASE_PATH="${PATH_PREFIX}${EDXP_MANAGER}"
BASE_PATH="${DEFAULT_BASE_PATH}"

if [[ ! -d ${BASE_PATH} ]]; then
    BASE_PATH="${PATH_PREFIX}${XP_INSTALLER}"
    if [[ ! -d ${BASE_PATH} ]]; then
        BASE_PATH="${DEFAULT_BASE_PATH}"
    fi
fi

LOG_PATH="${BASE_PATH}/log"
CONF_PATH="${BASE_PATH}/conf"
DISABLE_VERBOSE_LOG_FILE="${CONF_PATH}/disable_verbose_log"
LOG_VERBOSE=true
PATH_INFO=$(ls -ldZ "${LOG_PATH}")
PATH_OWNER=$(echo "${PATH_INFO}" | awk -F " " '{print $3":"$4}')
PATH_CONTEXT=$(echo "${PATH_INFO}" | awk -F " " '{print $5}')

if [[ -f ${DISABLE_VERBOSE_LOG_FILE} ]]; then
    LOG_VERBOSE=false
fi

start_log_cather () {
    LOG_FILE_NAME=$1
    LOG_TAG_FILTERS=$2
    CLEAN_OLD=$3
    START_NEW=$4
    LOG_FILE="${LOG_PATH}/${LOG_FILE_NAME}.log"
    PID_FILE="${LOG_PATH}/${LOG_FILE_NAME}.pid"
    mkdir -p ${LOG_PATH}
    if [[ ${CLEAN_OLD} = true ]]; then
        rm "${LOG_FILE}.old"
        mv "${LOG_FILE}" "${LOG_FILE}.old"
    fi
    rm "${LOG_PATH}/${LOG_FILE_NAME}.pid"
    if [[ ${START_NEW} = false ]]; then
        return
    fi
    touch ${LOG_FILE}
    chcon PATH_CONTEXT "${LOG_FILE}"
    chown PATH_OWNER "${LOG_FILE}"
    chmod 666 ${LOG_FILE}
    touch ${PID_FILE}
    chcon PATH_CONTEXT "${PID_FILE}"
    chown PATH_OWNER "${PID_FILE}"
    chmod 666 ${PID_FILE}
    echo "--------- beginning of head">>${LOG_FILE}
    echo "EdXposed Log">>${LOG_FILE}
    echo "Powered by Log Catcher">>${LOG_FILE}
    echo "QQ support group: 855219808">>${LOG_FILE}
    echo "Telegram support group: @Code_Of_MeowCat">>${LOG_FILE}
    echo "Telegram channel: @EdXposed">>${LOG_FILE}
    echo "--------- beginning of information">>${LOG_FILE}
    echo "Manufacturer: ${MANUFACTURER}">>${LOG_FILE}
    echo "Brand: ${BRAND}">>${LOG_FILE}
    echo "Device: ${DEVICE}">>${LOG_FILE}
    echo "Product: ${PRODUCT}">>${LOG_FILE}
    echo "Model: ${MODEL}">>${LOG_FILE}
    echo "Fingerprint: ${FINGERPRINT}">>${LOG_FILE}
    echo "ROM description: ${BUILD_DESC}">>${LOG_FILE}
    echo "Architecture: ${ARCH}">>${LOG_FILE}
    echo "Android build: ${BUILD}">>${LOG_FILE}
    echo "Android version: ${ANDROID}">>${LOG_FILE}
    echo "Android sdk: ${ANDROID_SDK}">>${LOG_FILE}
    echo "EdXposed version: ${EDXP_VERSION}">>${LOG_FILE}
    echo "EdXposed api: 90.0">>${LOG_FILE}
    echo "Riru version: ${RIRU_VERSION} (${RIRU_VERCODE})">>${LOG_FILE}
    echo "Riru api: ${RIRU_APICODE}">>${LOG_FILE}
    echo "Magisk: ${MAGISK_VERSION} (${MAGISK_VERCODE})">>${LOG_FILE}
    logcat -f ${LOG_FILE} *:S ${LOG_TAG_FILTERS} &
    LOG_PID=$!
    echo "${LOG_PID}">"${LOG_PATH}/${LOG_FILE_NAME}.pid"
}

start_verbose_log_catcher () {
    start_log_cather all "EdXposed:V XSharedPreferences:V EdXposed-Bridge:V EdXposedManager:V XposedInstaller:V" true ${LOG_VERBOSE}
}

start_bridge_log_catcher () {
    start_log_cather error "XSharedPreferences:V EdXposed-Bridge:V" true true
}

chcon -R u:object_r:system_file:s0 "${MODDIR}"

# Backup app_process to avoid bootloop caused by original Xposed replacement
rm -rf "${MODDIR}/system/bin"
mkdir "${MODDIR}/system/bin"
cp -f "/system/bin/app_process32" "${MODDIR}/system/bin/app_process32"
[[ -f "/system/bin/app_process64" ]] && cp -f "/system/bin/app_process64" "${MODDIR}/system/bin/app_process64"

start_verbose_log_catcher
start_bridge_log_catcher

[[ -d "${TARGET}" ]] || mkdir -p "${TARGET}"

cp "${MODDIR}/module.prop" "${TARGET}/module.prop"

[[ -f "${MODDIR}/sepolicy.rule" ]] || sepolicy