#!/usr/bin/env bash
#
# Copyright (C) 2022 Ing <https://github.com/wjz304>
# 
# This is free software, licensed under the MIT License.
# See /LICENSE for more information.
#


# Convert po2mo
# $1 path
function convertpo2mo() {
    echo "Convert po2mo begin"
    local DEST_PATH="${1:-lang}"
    if [ `find ${DEST_PATH}/ -name "*.po" | wc -l` -gt 0 ]; then
      for P in "`ls ${DEST_PATH}/*.po`"
      do
        # Use msgfmt command to compile the .po file into a binary .mo file
        echo "msgfmt ${P} to ${P/.po/.mo}"
        msgfmt ${P} -o ${P/.po/.mo}
      done
    fi
    echo "Convert po2mo end"
}


# Get extractor
# $1 path
function getExtractor(){
    echo "Getting syno extractor begin"
    local DEST_PATH="${1:-extractor}"
    local CACHE_DIR="/tmp/pat"
    rm -rf "${CACHE_DIR}"; mkdir -p "${CACHE_DIR}"
    # Download pat file
    # global.synologydownload.com, global.download.synology.com, cndl.synology.cn
    local PAT_URL="https://global.download.synology.com/download/DSM/release/7.0.1/42218/DSM_DS3622xs%2B_42218.pat"
    local PAT_FILE="DSM_DS3622xs+_42218.pat"
    local STATUS=`curl -# -w "%{http_code}" -L "${PAT_URL}" -o "${CACHE_DIR}/${PAT_FILE}"`
    if [ $? -ne 0 -o ${STATUS} -ne 200 ]; then
      echo "[E] DSM_DS3622xs%2B_42218.pat download error!"
      rm -rf ${CACHE_DIR}
      exit 1
    fi

    mkdir -p "${CACHE_DIR}/ramdisk"
    tar -C "${CACHE_DIR}/ramdisk/" -xf "${CACHE_DIR}/${PAT_FILE}" rd.gz 2>&1
    if [ $? -ne 0 ]; then
      echo "[E] extractor rd.gz error!"
      rm -rf ${CACHE_DIR}
      exit 1
    fi
    (cd "${CACHE_DIR}/ramdisk"; xz -dc < rd.gz | cpio -idm) >/dev/null 2>&1 || true

    rm -rf "${DEST_PATH}"; mkdir -p "${DEST_PATH}"

    # Copy only necessary files
    for f in libcurl.so.4 libmbedcrypto.so.5 libmbedtls.so.13 libmbedx509.so.1 libmsgpackc.so.2 libsodium.so libsynocodesign-ng-virtual-junior-wins.so.7; do
      cp "${CACHE_DIR}/ramdisk/usr/lib/${f}" "${DEST_PATH}"
    done
    cp "${CACHE_DIR}/ramdisk/usr/syno/bin/scemd" "${DEST_PATH}/syno_extract_system_patch"
    
    # Clean up
    rm -rf ${CACHE_DIR}
    echo "Getting syno extractor end"
}


# Get latest LKMs
# $1 path
function getLKMs() {
    echo "Getting LKMs begin"
    local DEST_PATH="${1:-lkms}"
    local CACHE_FILE="/tmp/rp-lkms.zip"
    rm -f "${CACHE_FILE}"
    TAG=`curl -s "https://api.github.com/repos/wjz304/redpill-lkm/releases/latest" | grep -oP '"tag_name": "\K(.*)(?=")'`
    STATUS=`curl -w "%{http_code}" -L "https://github.com/wjz304/redpill-lkm/releases/download/${TAG}/rp-lkms.zip" -o "${CACHE_FILE}"`
    echo "Status=${STATUS}"
    [ ${STATUS} -ne 200 ] && exit 1
    # Unzip LKMs
    rm -rf "${DEST_PATH}"; mkdir -p "${DEST_PATH}"
    unzip "${CACHE_FILE}" -d "${DEST_PATH}"
    rm -f "${CACHE_FILE}"
    echo "Getting LKMs end"
}


# Get latest addons and install its
# $1 path
function getAddons() {
    echo "Getting Addons begin"
    local DEST_PATH="${1:-addons}"
    local CACHE_DIR="/tmp/addons"
    local CACHE_FILE="/tmp/addons.zip"
    TAG=`curl -s https://api.github.com/repos/wjz304/arpl-addons/releases/latest | grep -oP '"tag_name": "\K(.*)(?=")'`
    STATUS=`curl -w "%{http_code}" -L "https://github.com/wjz304/arpl-addons/releases/download/${TAG}/addons.zip" -o "${CACHE_FILE}"`
    echo "Status=${STATUS}"
    [ ${STATUS} -ne 200 ] && exit 1
    rm -rf "${DEST_PATH}"; mkdir -p "${DEST_PATH}"
    # Install Addons
    rm -rf "${CACHE_DIR}"; mkdir -p "${CACHE_DIR}"
    unzip "${CACHE_FILE}" -d "${CACHE_DIR}"
    echo "Installing addons to ${DEST_PATH}"
    [ -f /tmp/addons/VERSION ] && cp -f /tmp/addons/VERSION ${DEST_PATH}/
    for PKG in `ls ${CACHE_DIR}/*.addon`; do
      ADDON=`basename "${PKG}" .addon`
      mkdir -p "${DEST_PATH}/${ADDON}"
      echo "Extracting ${PKG} to ${DEST_PATH}/${ADDON}"
      tar xaf "${PKG}" -C "${DEST_PATH}/${ADDON}"
    done
    echo "Getting Addons end"
}


# Get latest modules
# $1 path
function getModules() {
    echo "Getting Modules begin"
    local DEST_PATH="${1:-addons}"
    local CACHE_FILE="/tmp/modules.zip"
    rm -f "${CACHE_FILE}"
    TAG=`curl -s https://api.github.com/repos/wjz304/arpl-modules/releases/latest | grep -oP '"tag_name": "\K(.*)(?=")'`
    STATUS=`curl -w "%{http_code}" -L "https://github.com/wjz304/arpl-modules/releases/download/${TAG}/modules.zip" -o "${CACHE_FILE}"`
    echo "Status=${STATUS}"
    [ ${STATUS} -ne 200 ] && exit 1
    # Unzip Modules
    rm -rf "${DEST_PATH}"; mkdir -p "${DEST_PATH}"
    unzip "${CACHE_FILE}" -d "${DEST_PATH}"
    rm -f "${CACHE_FILE}"
    echo "Getting Modules end"
}