#!/bin/bash

# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2019-present Team LibreELEC (https://libreelec.tv)

. config/options ""
. config/multithread

usage() {
  cat - >&2 <<EOF
SYNOPSIS
       ./script/create_addon [OPTION] [addons]...

DESCRIPTION
       create_addon builds one or more addons.

       --show-only
              output the list of packages, which are intented to build

       --help shows this message

       [addons]
              list of addons to build.
              The addons can identified by:
              - the name of the addon
              - a group name of addons
                  * all - all addons found under packages and project/*/packages
                  * official - all addons found under packages/addons
                  * binary - all addons found under packages/mediacenter/kodi-binary-addons
              - a regex term (grep styled), the term is automatic sorounded with string begin and end (^[term]$)

              addons can removed from list with a leading minus.

EXAMPLE
       build all addons
       > ./script/create_addon all

       build audio encoders and decoders, only
       > ./script/create_addon audioencoder.* audiodecoder.*

       build all, but not binary
       > ./script/create_addon all -binary
EOF
  exit ${1:-0}
}

# Get list of addon packages
get_addons() {
  local paths filter
  local pkgpath exited
  local count=0 validpkg

  case ${1} in
    binary)   paths="^${ROOT}/packages/mediacenter/kodi-binary-addons/";;
    official) paths="^${ROOT}/packages/addons/";;
    all)      paths="^${ROOT}/packages/|^${ROOT}/projects/.*/packages/";;
    *)        paths="^${ROOT}/packages/|^${ROOT}/projects/.*/packages/"; filter="${1}";;
  esac

  exit() { exited=1; }

  for pkgpath in $(cat "${_CACHE_PACKAGE_LOCAL}" "${_CACHE_PACKAGE_GLOBAL}" | grep -E "${paths}"); do
    if [ -n "${filter}" ]; then
      [[ ${pkgpath} =~ ^.*/${filter}@?+?@ ]] || continue
    fi

    exited=0
    source_package "${pkgpath%%@*}/package.mk" &>/dev/null
    [ ${exited} -eq 1 ] && continue

    validpkg="no"
    VERIFY_FAIL=
    # Should only build embedded addons when they are explictly specified in the addon list
    if [ "${PKG_IS_ADDON}" = "embedded" ]; then
      if [ -n "${filter}" ]; then
        verify_addon && validpkg="yes"
      fi
    elif [ "${PKG_IS_ADDON}" = "yes" ]; then
      verify_addon && validpkg="yes"
    fi

    if [ "${validpkg}" = "yes" ]; then
      echo "${PKG_NAME}"
      count=$((count + 1))
    elif [ -n "${VERIFY_FAIL}" -a -n "${filter}" ]; then
      echo "$(print_color CLR_ERROR "${PKG_NAME}"): ${VERIFY_FAIL}" >&2
    fi
  done

  unset -f exit

  if [ ${count} -eq 0 -a -n "${filter}" ]; then
    echo  "$(print_color CLR_ERROR "ERROR: no addons matched for filter ${filter}")" >&2
    echo  "For more information type: ./scripts/create_addon --help" >&2
    die
  fi
}

# Return 0 if package is a suitable addon, 1 otherwise
verify_addon() {
  if [ -n "${PKG_ARCH}" ]; then
    VERIFY_FAIL="Incompatible arch: \"${TARGET_ARCH}\" not in [ ${PKG_ARCH} ]"
    listcontains "${PKG_ARCH}" "!${TARGET_ARCH}" && return 1
    listcontains "${PKG_ARCH}" "${TARGET_ARCH}" || listcontains "${PKG_ARCH}" "any" || return 1
  fi

  if [ -n "${PKG_ADDON_PROJECTS}" ]; then
    [ "${DEVICE}" = "RPi" ] && _DEVICE="RPi1" || _DEVICE="${DEVICE}"

    VERIFY_FAIL="Incompatible project or device: \"${_DEVICE:-${PROJECT}}\" not in [ ${PKG_ADDON_PROJECTS} ]"

    if listcontains "${PKG_ADDON_PROJECTS}" "!${_DEVICE:-${PROJECT}}" ||
       listcontains "${PKG_ADDON_PROJECTS}" "!${PROJECT}"; then
      return 1
    fi

    if ! listcontains "${PKG_ADDON_PROJECTS}" "${_DEVICE:-${PROJECT}}" &&
       ! listcontains "${PKG_ADDON_PROJECTS}" "${PROJECT}" &&
       ! listcontains "${PKG_ADDON_PROJECTS}" "any"; then
      return 1
    fi
  fi

  return 0
}

# need parameter
if [ $# -eq 0 ]; then
  usage 1
fi

# check environment and configure toolchains
${SCRIPTS}/checkdeps

(setup_toolchain host)
setup_toolchain target

# collect list of addons for building
addons=
addons_drop=
show_only="no"

# read addons from parameter list
while [ $# -gt 0 ]; do
  case ${1} in
    --help)         usage 0;;
    --show-only)    show_only="yes";;
    --*)            usage 1;;
    -*)             addons_drop+=" $(get_addons ${1:1})";;
    *)              addons+=" $(get_addons ${1})";;
  esac
  shift
done

# Build a new list containing only those addons we want to build
wanted_addons=
for addon in $(echo ${addons} | tr ' ' '\n' | sort -u); do
  listcontains "${addons_drop}" "${addon}" || wanted_addons+=" ${addon}"
done

if [ "${show_only}" = "yes" ]; then
  for addon in ${wanted_addons}; do
    echo ${addon}
  done
  exit 0
fi

# Build all addons at once using a single plan
if MTADDONBUILD=yes start_multithread_build "${wanted_addons:1}"; then
  echo
  echo "$(print_color CLR_INFO "ALL ADDONS BUILT SUCCESSFULLY")"
  exit 0
elif [ -f "${THREAD_CONTROL}/addons.failed" ]; then
  echo >&2
  print_color CLR_ERROR "FAILED ADDONS:\n" >&2
  while read -r addon logfile; do
    if [ -n "${addon}" ]; then
      if [ -n "${logfile}" ]; then
        echo "    $(print_color CLR_ERROR "${addon}"): ${logfile}" >&2
      else
        echo "    $(print_color CLR_ERROR "${addon}")" >&2
      fi
    fi
  done < "${THREAD_CONTROL}/addons.failed"
  die
else
  die "$(print_color CLR_ERROR "UNKNOWN BUILD FAILURE OR INABILITY TO GENERATE PLAN")"
fi