#!/bin/bash

# ARCH INDEXES
ARCH_ARM_V7A=0
ARCH_ARM_V7A_NEON=1
ARCH_ARM64_V8A=2
ARCH_X86=3
ARCH_X86_64=4

# LIBRARY INDEXES
LIBRARY_FONTCONFIG=0
LIBRARY_FREETYPE=1
LIBRARY_FRIBIDI=2
LIBRARY_GMP=3
LIBRARY_GNUTLS=4
LIBRARY_LAME=5
LIBRARY_LIBASS=6
LIBRARY_LIBICONV=7
LIBRARY_LIBTHEORA=8
LIBRARY_LIBVORBIS=9
LIBRARY_LIBVPX=10
LIBRARY_LIBWEBP=11
LIBRARY_LIBXML2=12
LIBRARY_OPENCOREAMR=13
LIBRARY_SHINE=14
LIBRARY_SPEEX=15
LIBRARY_WAVPACK=16
LIBRARY_KVAZAAR=17
LIBRARY_X264=18
LIBRARY_XVIDCORE=19
LIBRARY_X265=20
LIBRARY_LIBVIDSTAB=21
LIBRARY_RUBBERBAND=22
LIBRARY_LIBILBC=23
LIBRARY_OPUS=24
LIBRARY_SNAPPY=25
LIBRARY_SOXR=26
LIBRARY_LIBAOM=27
LIBRARY_CHROMAPRINT=28
LIBRARY_TWOLAME=29
LIBRARY_SDL=30
LIBRARY_TESSERACT=31
LIBRARY_OPENH264=32
LIBRARY_VO_AMRWBENC=33
LIBRARY_GIFLIB=34
LIBRARY_JPEG=35
LIBRARY_LIBOGG=36
LIBRARY_LIBPNG=37
LIBRARY_LIBUUID=38
LIBRARY_NETTLE=39
LIBRARY_TIFF=40
LIBRARY_EXPAT=41
LIBRARY_SNDFILE=42
LIBRARY_LEPTONICA=43
LIBRARY_LIBSAMPLERATE=44
LIBRARY_ZLIB=45
LIBRARY_MEDIA_CODEC=46
LIBRARY_CPU_FEATURES=47

# ENABLE ARCH
ENABLED_ARCHITECTURES=(1 1 1 1 1)

# ENABLE LIBRARIES
ENABLED_LIBRARIES=(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1)

export BASEDIR=$(pwd)

# USING API LEVEL 24 / Android 7.0 (NOUGAT)
export API=24

RECONF_LIBRARIES=()
REBUILD_LIBRARIES=()
REDOWNLOAD_LIBRARIES=()

get_mobile_ffmpeg_version() {
  local MOBILE_FFMPEG_VERSION=$(grep '#define MOBILE_FFMPEG_VERSION' ${BASEDIR}/android/app/src/main/cpp/mobileffmpeg.h | grep -Eo '\".*\"' | sed -e 's/\"//g')

  echo ${MOBILE_FFMPEG_VERSION}
}

display_help() {
  COMMAND=$(echo $0 | sed -e 's/\.\///g')

  echo -e "\n'"$COMMAND"' builds FFmpeg and MobileFFmpeg for Android platform. By default five Android ABIs (armeabi-v7a, armeabi-v7a-neon, arm64-v8a, x86 and x86_64) are built \
without any external libraries enabled. Options can be used to disable ABIs and/or enable external libraries. \
Please note that GPL libraries (external libraries with GPL license) need --enable-gpl flag to be set explicitly. \
When compilation ends an Android Archive (AAR) file is created under the prebuilt folder.\n"

  echo -e "Usage: ./"$COMMAND" [OPTION]...\n"

  echo -e "Specify environment variables as VARIABLE=VALUE to override default build options.\n"

  echo -e "Options:"

  echo -e "  -h, --help\t\t\tdisplay this help and exit"
  echo -e "  -v, --version\t\t\tdisplay version information and exit"
  echo -e "  -d, --debug\t\t\tbuild with debug information"
  echo -e "  -s, --speed\t\t\toptimize for speed instead of size"
  echo -e "  -l, --lts\t\t\tbuild lts packages to support API 16+ devices"
  echo -e "  -f, --force\t\t\tignore warnings\n"

  echo -e "Licensing options:"

  echo -e "  --enable-gpl\t\t\tallow use of GPL libraries, created libs will be licensed under GPLv3.0 [no]\n"

  echo -e "Platforms:"

  echo -e "  --disable-arm-v7a\t\tdo not build arm-v7a platform [yes]"
  echo -e "  --disable-arm-v7a-neon\tdo not build arm-v7a-neon platform [yes]"
  echo -e "  --disable-arm64-v8a\t\tdo not build arm64-v8a platform [yes]"
  echo -e "  --disable-x86\t\t\tdo not build x86 platform [yes]"
  echo -e "  --disable-x86-64\t\tdo not build x86-64 platform [yes]\n"

  echo -e "Libraries:"

  echo -e "  --full\t\t\tenables all external libraries"
  echo -e "  --enable-android-media-codec\tbuild with built-in Android MediaCodec support[no]"
  echo -e "  --enable-android-zlib\t\tbuild with built-in zlib support[no]"
  echo -e "  --enable-chromaprint\t\tbuild with chromaprint [no]"
  echo -e "  --enable-fontconfig\t\tbuild with fontconfig [no]"
  echo -e "  --enable-freetype\t\tbuild with freetype [no]"
  echo -e "  --enable-fribidi\t\tbuild with fribidi [no]"
  echo -e "  --enable-gmp\t\t\tbuild with gmp [no]"
  echo -e "  --enable-gnutls\t\tbuild with gnutls [no]"
  echo -e "  --enable-kvazaar\t\tbuild with kvazaar [no]"
  echo -e "  --enable-lame\t\t\tbuild with lame [no]"
  echo -e "  --enable-libaom\t\tbuild with libaom [no]"
  echo -e "  --enable-libass\t\tbuild with libass [no]"
  echo -e "  --enable-libiconv\t\tbuild with libiconv [no]"
  echo -e "  --enable-libilbc\t\tbuild with libilbc [no]"
  echo -e "  --enable-libtheora\t\tbuild with libtheora [no]"
  echo -e "  --enable-libvorbis\t\tbuild with libvorbis [no]"
  echo -e "  --enable-libvpx\t\tbuild with libvpx [no]"
  echo -e "  --enable-libwebp\t\tbuild with libwebp [no]"
  echo -e "  --enable-libxml2\t\tbuild with libxml2 [no]"
  echo -e "  --enable-opencore-amr\t\tbuild with opencore-amr [no]"
  echo -e "  --enable-openh264\t\tbuild with openh264 [no]"
  echo -e "  --enable-opus\t\t\tbuild with opus [no]"
  echo -e "  --enable-sdl\t\t\tbuild with sdl [no]"
  echo -e "  --enable-shine\t\tbuild with shine [no]"
  echo -e "  --enable-snappy\t\tbuild with snappy [no]"
  echo -e "  --enable-soxr\t\t\tbuild with soxr [no]"
  echo -e "  --enable-speex\t\tbuild with speex [no]"
  echo -e "  --enable-tesseract\t\tbuild with tesseract [no]"
  echo -e "  --enable-twolame\t\tbuild with twolame [no]"
  echo -e "  --enable-vo-amrwbenc\t\tbuild with vo-amrwbenc [no]"
  echo -e "  --enable-wavpack\t\tbuild with wavpack [no]\n"

  echo -e "GPL libraries:"

  echo -e "  --enable-libvidstab\t\tbuild with libvidstab [no]"
  echo -e "  --enable-rubberband\t\tbuild with rubber band [no]"
  echo -e "  --enable-x264\t\t\tbuild with x264 [no]"
  echo -e "  --enable-x265\t\t\tbuild with x265 [no]"
  echo -e "  --enable-xvidcore\t\tbuild with xvidcore [no]\n"

  echo -e "Advanced options:"

  echo -e "  --reconf-LIBRARY\t\trun autoreconf before building LIBRARY [no]"
  echo -e "  --redownload-LIBRARY\t\tdownload LIBRARY even it is detected as already downloaded [no]"
  echo -e "  --rebuild-LIBRARY\t\tbuild LIBRARY even it is detected as already built [no]\n"
  echo -e "  --no-archive\t\tdo not build Android archive [no]\n"
}

display_version() {
  COMMAND=$(echo $0 | sed -e 's/\.\///g')

  echo -e "\
$COMMAND v$(get_mobile_ffmpeg_version)\n\
Copyright (c) 2018 Taner Sener\n\
License LGPLv3.0: GNU LGPL version 3 or later\n\
<https://www.gnu.org/licenses/lgpl-3.0.en.html>\n\
This is free software: you can redistribute it and/or modify it under the terms of the \
GNU Lesser General Public License as published by the Free Software Foundation, \
either version 3 of the License, or (at your option) any later version."
}

skip_library() {
  SKIP_VARIABLE=$(echo "SKIP_$1" | sed "s/\-/\_/g")

  export ${SKIP_VARIABLE}=1
}

no_output_redirection() {
  export NO_OUTPUT_REDIRECTION=1
}

no_workspace_cleanup_library() {
  NO_WORKSPACE_CLEANUP_VARIABLE=$(echo "NO_WORKSPACE_CLEANUP_$1" | sed "s/\-/\_/g")

  export ${NO_WORKSPACE_CLEANUP_VARIABLE}=1
}

no_link_time_optimization() {
  export NO_LINK_TIME_OPTIMIZATION=1
}

enable_debug() {
  export MOBILE_FFMPEG_DEBUG="-g"

  BUILD_TYPE_ID+="debug "
}

optimize_for_speed() {
  export MOBILE_FFMPEG_OPTIMIZED_FOR_SPEED="1"
}

enable_lts_build() {
  export MOBILE_FFMPEG_LTS_BUILD="1"

  # USING API LEVEL 16 / Android 4.1 (JELLY BEAN)
  export API=16
}

reconf_library() {
  local RECONF_VARIABLE=$(echo "RECONF_$1" | sed "s/\-/\_/g")
  local library_supported=0

  for library in {1..45}; do
    library_name=$(get_library_name $((library - 1)))

    if [[ $1 != "ffmpeg" ]] && [[ ${library_name} == $1 ]]; then
      export ${RECONF_VARIABLE}=1
      RECONF_LIBRARIES+=($1)
      library_supported=1
    fi
  done

  if [[ ${library_supported} -eq 0 ]]; then
    echo -e "INFO: --reconf flag detected for library $1 is not supported.\n" 1>>${BASEDIR}/build.log 2>&1
  fi
}

rebuild_library() {
  local REBUILD_VARIABLE=$(echo "REBUILD_$1" | sed "s/\-/\_/g")
  local library_supported=0

  for library in {0..47}; do
    library_name=$(get_library_name ${library})

    if [[ $1 != "ffmpeg" ]] && [[ ${library_name} == $1 ]]; then
      export ${REBUILD_VARIABLE}=1
      REBUILD_LIBRARIES+=($1)
      library_supported=1
    fi
  done

  if [[ ${library_supported} -eq 0 ]]; then
    echo -e "INFO: --rebuild flag detected for library $1 is not supported.\n" 1>>${BASEDIR}/build.log 2>&1
  fi
}

redownload_library() {
  local REDOWNLOAD_VARIABLE=$(echo "REDOWNLOAD_$1" | sed "s/\-/\_/g")
  local library_supported=0

  for library in {0..47}; do
    library_name=$(get_library_name ${library})

    if [[ ${library_name} == $1 ]]; then
      export ${REDOWNLOAD_VARIABLE}=1
      REDOWNLOAD_LIBRARIES+=($1)
      library_supported=1
    fi
  done

  if [[ "ffmpeg" == $1 ]]; then
    export ${REDOWNLOAD_VARIABLE}=1
    REDOWNLOAD_LIBRARIES+=($1)
    library_supported=1
  fi

  if [[ ${library_supported} -eq 0 ]]; then
    echo -e "INFO: --redownload flag detected for library $1 is not supported.\n" 1>>${BASEDIR}/build.log 2>&1
  fi
}

enable_library() {
  set_library $1 1
}

set_library() {
  case $1 in
  android-media-codec)
    ENABLED_LIBRARIES[LIBRARY_MEDIA_CODEC]=$2
    ;;
  android-zlib)
    ENABLED_LIBRARIES[LIBRARY_ZLIB]=$2
    ;;
  chromaprint)
    ENABLED_LIBRARIES[LIBRARY_CHROMAPRINT]=$2
    ;;
  fontconfig)
    ENABLED_LIBRARIES[LIBRARY_FONTCONFIG]=$2
    ENABLED_LIBRARIES[LIBRARY_LIBUUID]=$2
    ENABLED_LIBRARIES[LIBRARY_EXPAT]=$2
    ENABLED_LIBRARIES[LIBRARY_LIBICONV]=$2
    set_library "freetype" $2
    ;;
  freetype)
    ENABLED_LIBRARIES[LIBRARY_FREETYPE]=$2
    ENABLED_LIBRARIES[LIBRARY_ZLIB]=$2
    set_library "libpng" $2
    ;;
  fribidi)
    ENABLED_LIBRARIES[LIBRARY_FRIBIDI]=$2
    ;;
  gmp)
    ENABLED_LIBRARIES[LIBRARY_GMP]=$2
    ;;
  gnutls)
    ENABLED_LIBRARIES[LIBRARY_GNUTLS]=$2
    ENABLED_LIBRARIES[LIBRARY_ZLIB]=$2
    set_library "nettle" $2
    set_library "gmp" $2
    set_library "libiconv" $2
    ;;
  kvazaar)
    ENABLED_LIBRARIES[LIBRARY_KVAZAAR]=$2
    ;;
  lame)
    ENABLED_LIBRARIES[LIBRARY_LAME]=$2
    set_library "libiconv" $2
    ;;
  libaom)
    ENABLED_LIBRARIES[LIBRARY_LIBAOM]=$2
    ;;
  libass)
    ENABLED_LIBRARIES[LIBRARY_LIBASS]=$2
    ENABLED_LIBRARIES[LIBRARY_LIBUUID]=$2
    ENABLED_LIBRARIES[LIBRARY_EXPAT]=$2
    set_library "freetype" $2
    set_library "fribidi" $2
    set_library "fontconfig" $2
    set_library "libiconv" $2
    ;;
  libiconv)
    ENABLED_LIBRARIES[LIBRARY_LIBICONV]=$2
    ;;
  libilbc)
    ENABLED_LIBRARIES[LIBRARY_LIBILBC]=$2
    ;;
  libpng)
    ENABLED_LIBRARIES[LIBRARY_LIBPNG]=$2
    ENABLED_LIBRARIES[LIBRARY_ZLIB]=$2
    ;;
  libtheora)
    ENABLED_LIBRARIES[LIBRARY_LIBTHEORA]=$2
    ENABLED_LIBRARIES[LIBRARY_LIBOGG]=$2
    set_library "libvorbis" $2
    ;;
  libvidstab)
    ENABLED_LIBRARIES[LIBRARY_LIBVIDSTAB]=$2
    ;;
  libvorbis)
    ENABLED_LIBRARIES[LIBRARY_LIBVORBIS]=$2
    ENABLED_LIBRARIES[LIBRARY_LIBOGG]=$2
    ;;
  libvpx)
    ENABLED_LIBRARIES[LIBRARY_LIBVPX]=$2
    ;;
  libwebp)
    ENABLED_LIBRARIES[LIBRARY_LIBWEBP]=$2
    ENABLED_LIBRARIES[LIBRARY_GIFLIB]=$2
    ENABLED_LIBRARIES[LIBRARY_JPEG]=$2
    set_library "tiff" $2
    set_library "libpng" $2
    ;;
  libxml2)
    ENABLED_LIBRARIES[LIBRARY_LIBXML2]=$2
    set_library "libiconv" $2
    ;;
  opencore-amr)
    ENABLED_LIBRARIES[LIBRARY_OPENCOREAMR]=$2
    ;;
  openh264)
    ENABLED_LIBRARIES[LIBRARY_OPENH264]=$2
    ;;
  opus)
    ENABLED_LIBRARIES[LIBRARY_OPUS]=$2
    ;;
  rubberband)
    ENABLED_LIBRARIES[LIBRARY_RUBBERBAND]=$2
    ENABLED_LIBRARIES[LIBRARY_SNDFILE]=$2
    ENABLED_LIBRARIES[LIBRARY_LIBSAMPLERATE]=$2
    ;;
  sdl)
    ENABLED_LIBRARIES[LIBRARY_SDL]=$2
    ;;
  shine)
    ENABLED_LIBRARIES[LIBRARY_SHINE]=$2
    ;;
  snappy)
    ENABLED_LIBRARIES[LIBRARY_SNAPPY]=$2
    ENABLED_LIBRARIES[LIBRARY_ZLIB]=$2
    ;;
  soxr)
    ENABLED_LIBRARIES[LIBRARY_SOXR]=$2
    ;;
  speex)
    ENABLED_LIBRARIES[LIBRARY_SPEEX]=$2
    ;;
  tesseract)
    ENABLED_LIBRARIES[LIBRARY_TESSERACT]=$2
    ENABLED_LIBRARIES[LIBRARY_LEPTONICA]=$2
    ENABLED_LIBRARIES[LIBRARY_LIBWEBP]=$2
    ENABLED_LIBRARIES[LIBRARY_GIFLIB]=$2
    ENABLED_LIBRARIES[LIBRARY_JPEG]=$2
    ENABLED_LIBRARIES[LIBRARY_ZLIB]=$2
    set_library "tiff" $2
    set_library "libpng" $2
    ;;
  twolame)
    ENABLED_LIBRARIES[LIBRARY_TWOLAME]=$2
    ENABLED_LIBRARIES[LIBRARY_SNDFILE]=$2
    ;;
  vo-amrwbenc)
    ENABLED_LIBRARIES[LIBRARY_VO_AMRWBENC]=$2
    ;;
  wavpack)
    ENABLED_LIBRARIES[LIBRARY_WAVPACK]=$2
    ;;
  x264)
    ENABLED_LIBRARIES[LIBRARY_X264]=$2
    ;;
  x265)
    ENABLED_LIBRARIES[LIBRARY_X265]=$2
    ;;
  xvidcore)
    ENABLED_LIBRARIES[LIBRARY_XVIDCORE]=$2
    ;;
  expat | giflib | jpeg | leptonica | libogg | libsamplerate | libsndfile | libuuid)
    # THESE LIBRARIES ARE NOT ENABLED DIRECTLY
    ;;
  nettle)
    ENABLED_LIBRARIES[LIBRARY_NETTLE]=$2
    set_library "gmp" $2
    ;;
  tiff)
    ENABLED_LIBRARIES[LIBRARY_TIFF]=$2
    ENABLED_LIBRARIES[LIBRARY_JPEG]=$2
    ;;
  *)
    print_unknown_library $1
    ;;
  esac
}

disable_arch() {
  set_arch $1 0
}

set_arch() {
  case $1 in
  arm-v7a)
    ENABLED_ARCHITECTURES[ARCH_ARM_V7A]=$2
    ;;
  arm-v7a-neon)
    ENABLED_ARCHITECTURES[ARCH_ARM_V7A_NEON]=$2
    ;;
  arm64-v8a)
    ENABLED_ARCHITECTURES[ARCH_ARM64_V8A]=$2
    ;;
  x86)
    ENABLED_ARCHITECTURES[ARCH_X86]=$2
    ;;
  x86-64)
    ENABLED_ARCHITECTURES[ARCH_X86_64]=$2
    ;;
  *)
    print_unknown_platform $1
    ;;
  esac
}

print_unknown_option() {
  echo -e "Unknown option \"$1\".\nSee $0 --help for available options."
  exit 1
}

print_unknown_library() {
  echo -e "Unknown library \"$1\".\nSee $0 --help for available libraries."
  exit 1
}

print_unknown_platform() {
  echo -e "Unknown platform \"$1\".\nSee $0 --help for available platforms."
  exit 1
}

print_enabled_architectures() {
  echo -n "Architectures: "

  let enabled=0
  for print_arch in {0..4}; do
    if [[ ${ENABLED_ARCHITECTURES[$print_arch]} -eq 1 ]]; then
      if [[ ${enabled} -ge 1 ]]; then
        echo -n ", "
      fi
      echo -n $(get_arch_name $print_arch)
      enabled=$((${enabled} + 1))
    fi
  done

  if [ ${enabled} -gt 0 ]; then
    echo ""
  else
    echo "none"
  fi
}

print_enabled_libraries() {
  echo -n "Libraries: "

  let enabled=0

  for library in {45..47} {0..33}; do
    if [[ ${ENABLED_LIBRARIES[$library]} -eq 1 ]]; then
      if [[ ${enabled} -ge 1 ]]; then
        echo -n ", "
      fi
      echo -n $(get_library_name $library)
      enabled=$((${enabled} + 1))
    fi
  done

  if [ ${enabled} -gt 0 ]; then
    echo ""
  else
    echo "none"
  fi
}

print_reconfigure_requested_libraries() {
  local counter=0

  for RECONF_LIBRARY in "${RECONF_LIBRARIES[@]}"; do
    if [[ ${counter} -eq 0 ]]; then
      echo -n "Reconfigure: "
    else
      echo -n ", "
    fi

    echo -n ${RECONF_LIBRARY}

    counter=$((${counter} + 1))
  done

  if [[ ${counter} -gt 0 ]]; then
    echo ""
  fi
}

print_rebuild_requested_libraries() {
  local counter=0

  for REBUILD_LIBRARY in "${REBUILD_LIBRARIES[@]}"; do
    if [[ ${counter} -eq 0 ]]; then
      echo -n "Rebuild: "
    else
      echo -n ", "
    fi

    echo -n ${REBUILD_LIBRARY}

    counter=$((${counter} + 1))
  done

  if [[ ${counter} -gt 0 ]]; then
    echo ""
  fi
}

print_redownload_requested_libraries() {
  local counter=0

  for REDOWNLOAD_LIBRARY in "${REDOWNLOAD_LIBRARIES[@]}"; do
    if [[ ${counter} -eq 0 ]]; then
      echo -n "Redownload: "
    else
      echo -n ", "
    fi

    echo -n ${REDOWNLOAD_LIBRARY}

    counter=$((${counter} + 1))
  done

  if [[ ${counter} -gt 0 ]]; then
    echo ""
  fi
}

build_application_mk() {
  if [[ ! -z ${MOBILE_FFMPEG_LTS_BUILD} ]]; then
    local LTS_BUILD_FLAG="-DMOBILE_FFMPEG_LTS "
  fi

  if [[ ${ENABLED_LIBRARIES[$LIBRARY_X265]} -eq 1 ]] || [[ ${ENABLED_LIBRARIES[$LIBRARY_TESSERACT]} -eq 1 ]] || [[ ${ENABLED_LIBRARIES[$LIBRARY_OPENH264]} -eq 1 ]] || [[ ${ENABLED_LIBRARIES[$LIBRARY_SNAPPY]} -eq 1 ]] || [[ ${ENABLED_LIBRARIES[$LIBRARY_RUBBERBAND]} -eq 1 ]]; then
    local APP_STL="c++_shared"
  else
    local APP_STL="none"
  fi

  local BUILD_DATE="-DMOBILE_FFMPEG_BUILD_DATE=$(date +%Y%m%d 2>>${BASEDIR}/build.log)"

  rm -f ${BASEDIR}/android/jni/Application.mk

  cat >"${BASEDIR}/android/jni/Application.mk" <<EOF
APP_OPTIM := release

APP_ABI := ${ANDROID_ARCHITECTURES}

APP_STL := ${APP_STL}

APP_PLATFORM := android-${API}

APP_CFLAGS := -O3 -DANDROID ${LTS_BUILD_FLAG}${BUILD_DATE} -Wall -Wno-deprecated-declarations -Wno-pointer-sign -Wno-switch -Wno-unused-result -Wno-unused-variable

APP_LDFLAGS := -Wl,--hash-style=both
EOF
}

if [[ -z ${ANDROID_NDK_ROOT} ]]; then
  echo "ANDROID_NDK_ROOT not defined"
  exit 1
fi

if [[ -z ${ANDROID_HOME} ]]; then
  echo "ANDROID_HOME not defined"
  exit 1
fi

# ENABLE COMMON FUNCTIONS
. ${BASEDIR}/build/android-common.sh

DETECTED_NDK_VERSION=$(grep -Eo Revision.* ${ANDROID_NDK_ROOT}/source.properties | sed 's/Revision//g;s/=//g;s/ //g')

echo -e "\nINFO: Using Android NDK v${DETECTED_NDK_VERSION} provided at ${ANDROID_NDK_ROOT}\n" 1>>${BASEDIR}/build.log 2>&1
echo -e "INFO: Build options: $*\n" 1>>${BASEDIR}/build.log 2>&1

# CLEAR OLD NATIVE LIBS
rm -rf ${BASEDIR}/android/libs 1>>${BASEDIR}/build.log 2>&1
rm -rf ${BASEDIR}/android/obj 1>>${BASEDIR}/build.log 2>&1

GPL_ENABLED="no"
DISPLAY_HELP=""
BUILD_LTS=""
BUILD_FULL=""
BUILD_TYPE_ID=""
BUILD_VERSION=$(git describe --tags 2>>${BASEDIR}/build.log)

while [ ! $# -eq 0 ]; do

  case $1 in
  -h | --help)
    DISPLAY_HELP="1"
    ;;
  -v | --version)
    display_version
    exit 0
    ;;
  --skip-*)
    SKIP_LIBRARY=$(echo $1 | sed -e 's/^--[A-Za-z]*-//g')

    skip_library ${SKIP_LIBRARY}
    ;;
  --no-output-redirection)
    no_output_redirection
    ;;
  --no-workspace-cleanup-*)
    NO_WORKSPACE_CLEANUP_LIBRARY=$(echo $1 | sed -e 's/^--[A-Za-z]*-[A-Za-z]*-[A-Za-z]*-//g')

    no_workspace_cleanup_library ${NO_WORKSPACE_CLEANUP_LIBRARY}
    ;;
  --no-link-time-optimization)
    no_link_time_optimization
    ;;
  -d | --debug)
    enable_debug
    ;;
  -s | --speed)
    optimize_for_speed
    ;;
  -l | --lts)
    BUILD_LTS="1"
    ;;
  -f | --force)
    BUILD_FORCE="1"
    ;;
  --reconf-*)
    CONF_LIBRARY=$(echo $1 | sed -e 's/^--[A-Za-z]*-//g')

    reconf_library ${CONF_LIBRARY}
    ;;
  --rebuild-*)
    BUILD_LIBRARY=$(echo $1 | sed -e 's/^--[A-Za-z]*-//g')

    rebuild_library ${BUILD_LIBRARY}
    ;;
  --redownload-*)
    DOWNLOAD_LIBRARY=$(echo $1 | sed -e 's/^--[A-Za-z]*-//g')

    redownload_library ${DOWNLOAD_LIBRARY}
    ;;
  --no-archive)
    NO_ARCHIVE="1"
    ;;
  --full)
    BUILD_FULL="1"
    ;;
  --enable-gpl)
    GPL_ENABLED="yes"
    ;;
  --enable-*)
    ENABLED_LIBRARY=$(echo $1 | sed -e 's/^--[A-Za-z]*-//g')

    enable_library ${ENABLED_LIBRARY}
    ;;
  --disable-*)
    DISABLED_ARCH=$(echo $1 | sed -e 's/^--[A-Za-z]*-//g')

    disable_arch ${DISABLED_ARCH}
    ;;
  *)
    print_unknown_option $1
    ;;
  esac
  shift
done

# DETECT BUILD TYPE
rm -f ${BASEDIR}/android/app/build.gradle 1>>${BASEDIR}/build.log 2>&1
if [[ ! -z ${BUILD_LTS} ]]; then
  enable_lts_build
  BUILD_TYPE_ID+="LTS "

  cp ${BASEDIR}/tools/release/android/build.lts.gradle ${BASEDIR}/android/app/build.gradle 1>>${BASEDIR}/build.log 2>&1
else
  cp ${BASEDIR}/tools/release/android/build.gradle ${BASEDIR}/android/app/build.gradle 1>>${BASEDIR}/build.log 2>&1
fi

if [[ ! -z ${DISPLAY_HELP} ]]; then
  display_help
  exit 0
fi

if [[ -n ${BUILD_FULL} ]]; then
  for library in {0..46}; do
    if [ ${GPL_ENABLED} == "yes" ]; then
      enable_library $(get_library_name $library)
    else
      if [[ $library -ne 18 ]] && [[ $library -ne 19 ]] && [[ $library -ne 20 ]] && [[ $library -ne 21 ]] && [[ $library -ne 22 ]]; then
        enable_library $(get_library_name $library)
      fi
    fi
  done
fi

if [[ -z ${BUILD_VERSION} ]]; then
  echo -e "\nerror: Can not run git commands in this folder. See build.log.\n"
  exit 1
fi

echo -e "\nBuilding mobile-ffmpeg ${BUILD_TYPE_ID}library for Android\n"
echo -e -n "INFO: Building mobile-ffmpeg ${BUILD_VERSION} ${BUILD_TYPE_ID}library for Android: " 1>>${BASEDIR}/build.log 2>&1
echo -e $(date) 1>>${BASEDIR}/build.log 2>&1

print_enabled_architectures
print_enabled_libraries
print_reconfigure_requested_libraries
print_rebuild_requested_libraries
print_redownload_requested_libraries

# CHECK GPL LIBRARIES
for gpl_library in {18,19,20,21,22}; do
  if [[ ${ENABLED_LIBRARIES[$gpl_library]} -eq 1 ]]; then
    library_name=$(get_library_name ${gpl_library})

    if [ ${GPL_ENABLED} != "yes" ]; then
      echo -e "\n(*) Invalid configuration detected. GPL library ${library_name} enabled without --enable-gpl flag.\n"
      echo -e "\n(*) Invalid configuration detected. GPL library ${library_name} enabled without --enable-gpl flag.\n" 1>>${BASEDIR}/build.log 2>&1
      exit 1
    else
      DOWNLOAD_RESULT=$(download_gpl_library_source ${library_name})
      if [[ ${DOWNLOAD_RESULT} -ne 0 ]]; then
        echo -e "\n(*) Failed to download GPL library ${library_name} source. Please check build.log file for details. If the problem persists refer to offline building instructions.\n"
        echo -e "\n(*) Failed to download GPL library ${library_name} source.\n" 1>>${BASEDIR}/build.log 2>&1
        exit 1
      fi
    fi
  fi
done

# SAVE API VALUE
export ORIGINAL_API=${API}

for run_arch in {0..4}; do
  if [[ ${ENABLED_ARCHITECTURES[$run_arch]} -eq 1 ]]; then
    if [[ (${run_arch} -eq ${ARCH_ARM64_V8A} || ${run_arch} -eq ${ARCH_X86_64}) && ${API} -lt 21 ]]; then

      # 64 bit ABIs supported after API 21
      export API=21
    else
      export API=${ORIGINAL_API}
    fi

    export ARCH=$(get_arch_name $run_arch)
    export TOOLCHAIN=$(get_toolchain)
    export TOOLCHAIN_ARCH=$(get_toolchain_arch)

    . ${BASEDIR}/build/main-android.sh "${ENABLED_LIBRARIES[@]}" || exit 1

    # CLEAR FLAGS
    for library in {0..47}; do
      library_name=$(get_library_name ${library})
      unset $(echo "OK_${library_name}" | sed "s/\-/\_/g")
      unset $(echo "DEPENDENCY_REBUILT_${library_name}" | sed "s/\-/\_/g")
    done
  fi
done

export API=${ORIGINAL_API}

rm -f ${BASEDIR}/android/build/.armv7 1>>${BASEDIR}/build.log 2>&1
rm -f ${BASEDIR}/android/build/.armv7neon 1>>${BASEDIR}/build.log 2>&1
ANDROID_ARCHITECTURES=""
if [[ ${ENABLED_ARCHITECTURES[0]} -eq 1 ]] || [[ ${ENABLED_ARCHITECTURES[1]} -eq 1 ]]; then
  ANDROID_ARCHITECTURES+="$(get_android_arch 0) "
fi
if [[ ${ENABLED_ARCHITECTURES[0]} -eq 1 ]]; then
  mkdir -p ${BASEDIR}/android/build 1>>${BASEDIR}/build.log 2>&1
  cat >"${BASEDIR}/android/build/.armv7" <<EOF
EOF
fi
if [[ ${ENABLED_ARCHITECTURES[1]} -eq 1 ]]; then
  mkdir -p ${BASEDIR}/android/build 1>>${BASEDIR}/build.log 2>&1
  cat >"${BASEDIR}/android/build/.armv7neon" <<EOF
EOF
fi
if [[ ${ENABLED_ARCHITECTURES[2]} -eq 1 ]]; then
  ANDROID_ARCHITECTURES+="$(get_android_arch 2) "
fi
if [[ ${ENABLED_ARCHITECTURES[3]} -eq 1 ]]; then
  ANDROID_ARCHITECTURES+="$(get_android_arch 3) "
fi
if [[ ${ENABLED_ARCHITECTURES[4]} -eq 1 ]]; then
  ANDROID_ARCHITECTURES+="$(get_android_arch 4) "
fi

if [[ ! -z ${ANDROID_ARCHITECTURES} ]] && [ -z ${NO_ARCHIVE} ]; then

  echo -n -e "\nmobile-ffmpeg: "

  build_application_mk

  MOBILE_FFMPEG_AAR=${BASEDIR}/prebuilt/android-aar/mobile-ffmpeg

  # BUILDING ANDROID ARCHIVE LIBRARY
  rm -rf ${BASEDIR}/android/libs 1>>${BASEDIR}/build.log 2>&1

  mkdir -p ${MOBILE_FFMPEG_AAR} 1>>${BASEDIR}/build.log 2>&1

  cd ${BASEDIR}/android 1>>${BASEDIR}/build.log 2>&1

  ${ANDROID_NDK_ROOT}/ndk-build -B 1>>${BASEDIR}/build.log 2>&1

  if [ $? -eq 0 ]; then
    echo "ok"
  else
    echo "failed"
    exit 1
  fi

  echo -e -n "\n\nCreating Android archive under prebuilt/android-aar: "

  ./gradlew app:clean app:assembleRelease app:testReleaseUnitTest 1>>${BASEDIR}/build.log 2>&1

  if [ $? -ne 0 ]; then
    echo -e "failed\n"
    exit 1
  fi

  cp ${BASEDIR}/android/app/build/outputs/aar/mobile-ffmpeg-release.aar ${MOBILE_FFMPEG_AAR}/mobile-ffmpeg.aar 1>>${BASEDIR}/build.log 2>&1

  if [ $? -ne 0 ]; then
    echo -e "failed\n"
    exit 1
  fi

  echo -e "Created mobile-ffmpeg Android archive successfully.\n" 1>>${BASEDIR}/build.log 2>&1

  echo -e "ok\n"
fi