#!/usr/bin/env bash
# domake:
# Compile U++ main tools: theide and umk

### Sourced file(s)

. ./function_library

### Variables

minimum_gcc_dumpversion="4.9.0"
minimum_gcc_version=$(convert_version_to_number "$minimum_gcc_dumpversion")

show_debug_info="true"
show_debug_warning="true"
show_debug_error="true"

use_gcc="false"
use_clang="false"
use_cpp_compiler="false"
use_other_cpp_compiler="false"

unset make_parameter_array

### Constants

DEFAULT_GCC_CXXFLAGS=""
DEFAULT_CLANG_CXXFLAGS="-O3 -ffunction-sections -fdata-sections -Wno-logical-op-parentheses -std=c++11"
DEFAULT_CPP_CXXFLAGS=""
DEFAULT_OTHER_CPP_CXXFLAGS=""

SCRIPT_NAME=$(basename "$0" | tr '[:lower:]' '[:upper:]' )

### Function declarations

show_usage()
{
    echo 'Usage: ./domake [options]'
    echo
    echo 'Options:'
    echo '  --verbose       : increase verbosity'
    echo '  --info=FLAGS    : fine-grained informational verbosity ( default: true )'
    echo '  --warning=FLAGS : fine-grained warning verbosity ( default: true )'
    echo '  --debug=FLAGS   : fine-grained debug verbosity ( default: true )'
    echo '  --help          : show current usage information'
    echo
    echo 'Note:'
    echo ' * domake use environment variables to supersede auto generated variables and those from uppsrc/Makefile.in:'
    echo '   - CXX          : c++ compiler'
    echo '   - CXXFLAGS     : c++ compiler flags'
    echo '   - UPPOUT       : U++ output directory'
    echo "   - CINC         : default include directory list (use ';' as separator)"
    echo '   - Macro        : U++ macro (ex: -DflagLINUX)'
    echo '   - LINKER       : linker binary name'
    echo '   - LDFLAGS      : linker extra flags'
    echo "   - LIBPATH      : library path list (use ';' as separator)"
    echo '   - AR           : archive-maintaining program'
    echo
    echo 'Example: CXX=g++ UPPOUT=$HOME/tmp ./domake'
}

# log_debug_info "Processing parameters"

for arg in "$@"
do
  case "$arg" in

  --verbose)
    show_debug_info=true
    show_debug_warning=true
    show_debug_error=true
    ;;
    
  --info=*)
    show_debug_info=$( echo $arg | sed 's/--info=//' )
    if [ "$show_debug_info" != "true" -a "$show_debug_info" != "false"  ]
    then
      show_usage
      exit 0
    fi
    ;;
    
  --warning=*)
    show_debug_warning=$( echo $arg | sed 's/--warning=//' )
    if [ "$show_debug_warning" != "true" -a "$show_debug_warning" != "false"  ]
    then
      show_usage
      exit 0
    fi
    ;;
    
  --error=*)
    show_debug_error=$( echo $arg | sed 's/--error=//' )
    if [ "$show_debug_error" != "true" -a "$show_debug_error" != "false"  ]
    then
      show_usage
      exit 0
    fi
    ;;

  --help)
    show_usage
    exit 0
    ;;
    
    *)
    log_debug_error "Bad command line argument '$arg'"
    show_usage
    exit 1
    
    esac

done


### Main script start here

if [ "$CXX" != "" ]
then
  log_debug_warning "Use of $CXX forced by CXX environment variable"

  if [ "$(basename "$CXX")" = "g++" ]
  then
    log_debug_info "Will use g++ as requested"
    use_gcc="true"
    
  elif [ "$(basename "$CXX")" = "clang++" ]
  then
    log_debug_info "Will use clang++ as requested"
    use_clang="true"
  
  elif [ "$(basename "$CXX")" = "c++" ]
  then
    log_debug_info "Will use c++ as requested"
    use_cpp_compiler="true"

  else
    log_debug_info "Will use $CXX as requested"
    use_other_cpp_compiler="true"

  fi

else

  log_debug_info "Searching for g++ compiler"

  if which g++
  then
    log_debug_info "Found $(which g++)"
    gcc_dumpversion=$(gcc -dumpversion)
    gcc_version=$(convert_version_to_number "$gcc_dumpversion")

    if [ "$gcc_version" -gt "$minimum_gcc_version" ]
    then
      use_gcc="true"
      CXX="g++"

    else
      log_debug_warning "The g++ compiler found (e.q $gcc_dumpversion) has a lower version than the minimum required version (e.q $minimum_gcc_dumpversion)"

    fi
  fi

  if [ "$use_gcc" = "false" ]
  then
    log_debug_info "Searching for clang++ compiler"
    if which clang++
    then
      log_debug_info "Found $(which clang++)"
      use_clang="true"
      CXX="clang++"

    else
      log_debug_info "Searching for a standard c++ compiler"

      if which c++
      then
        log_debug_info "Found $(which c++)"
        log_debug_warning "This c++ compiler has not been tested yet. Compilation will perhaps fail"
        use_cpp_compiler="true"
        CXX="c++"

        c++ --version || true

      else
        log_debug_error "No compatible c++ compiler found in PATH"
        log_debug "${COLOR_WHITE}SOLUTIONS (a few):${COLOR_NC}"
        log_debug " - Install a compatible gcc-c++ version (> $minimum_gcc_dumpversion)"
        log_debug " - Or install clang++ LLVM compiler"
        log_debug " - Or add clang++ or g++ path to the PATH variable (if clang++ or a g++ compatible version is already installed)"
        exit 1

      fi    
    fi
  fi
fi


log_debug_info "Searching for extra make parameters"

i=0

if [ "$CXXFLAGS" != "" ]
then
  log_debug_warning "CXXFLAGS superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="CXXFLAGS=$CXXFLAGS"

elif [ "$use_gcc" = "true" -a "$DEFAULT_GCC_CXXFLAGS" != "" ]
then
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="CXXFLAGS=$DEFAULT_GCC_CXXFLAGS"
  
elif [ "$use_clang" = "true" -a "$DEFAULT_CLANG_CXXFLAGS" != "" ]
then
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="CXXFLAGS=$DEFAULT_CLANG_CXXFLAGS"

elif [ "$use_cpp_compiler" = "true" -a "$DEFAULT_CPP_CXXFLAGS" != "" ]
then
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="CXXFLAGS=$DEFAULT_CPP_CXXFLAGS"

elif [ "$use_other_cpp_compiler" = "true" -a "$DEFAULT_OTHER_CPP_CXXFLAGS" != "" ]
then
  log_debug_warning "CXXFLAGS environment variable not set. Will use the default value from uppsrc/Makefile.in"

fi

if [ "$UPPOUT" != "" ]
then
  log_debug_warning "UPPOUT superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="UPPOUT=$UPPOUT"
fi
if [ "$CINC" != "" ]
then
  log_debug_warning "CINC superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="CINC=$CINC"
fi
if [ "$Macro" != "" ]
then
  log_debug_warning "Macro superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="Macro=$Macro"
fi
if [ "$LINKER" != "" ]
then
  log_debug_warning "LINKER superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="LINKER=$LINKER"
fi
if [ "$LDFLAGS" != "" ]
then
  log_debug_warning "LDFLAGS superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="LDFLAGS=$LDFLAGS"
fi
if [ "$LIBPATH" != "" ]
then
  log_debug_warning "LIBPATH superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="LIBPATH=$LIBPATH"
fi
if [ "$AR" != "" ]
then
  log_debug_warning "AR superseded by corresponding environment variable"
  make_parameter_array[i++]="-e"
  make_parameter_array[i++]="AR=$AR"
fi

if [ "${#make_parameter_array[@]}" != "0" ]
then
  log_debug_info "Make parameters:"
  for (( i=1 ; i < ${#make_parameter_array[@]} ; i+=2 ))
  do
    log_debug_info " --> ${make_parameter_array[$i]}"
  done
fi


log_debug_info "Configuring uppsrc/Makefile, uppsrc/uMakefile, GCC.bm and CLANG.bm with pkg-config"

if [ "${#make_parameter_array}" != "0" ]
then
  log_debug_info "Extra parameters will supersede default parameters"

fi

if which pkg-config
then

  library_list=""
  for i in gtk+-2.0 x11 libnotify freetype2
  do
    if pkg-config --exists $i
    then
      library_list="$library_list $i"
      log_debug_info "pkg-config: Found library $i"
    else
      log_debug_warning "pkg-config: '$i' not found in $(pkg-config --variable pc_path pkg-config). Do you need to install $i development package?"
    fi
  done
  
  sed -e "s@-I((INCLUDES))@`pkg-config --cflags-only-I $library_list`@g" -e "s@-L\"((LIBRARIES))\"@`pkg-config --libs-only-L $library_list`@g" uppsrc/Makefile.in >uppsrc/Makefile
  sed -e "s@-I((INCLUDES))@`pkg-config --cflags-only-I $library_list`@g" -e "s@-L\"((LIBRARIES))\"@`pkg-config --libs-only-L $library_list`@g" uppsrc/uMakefile.in >uppsrc/uMakefile
  sed -e "s@((INCLUDES))@`pkg-config --cflags-only-I $library_list|sed -e s/-I//g -e \"s/ /;/g\"`@g" -e "s@((LIBRARIES))@`pkg-config --libs-only-L $library_list|sed -e s/-L//g -e \"s/ /;/g\"`@g" GCC.bm.in >GCC.bm
  sed -e "s@((INCLUDES))@`pkg-config --cflags-only-I $library_list|sed -e s/-I//g -e \"s/ /;/g\"`@g" -e "s@((LIBRARIES))@`pkg-config --libs-only-L $library_list|sed -e s/-L//g -e \"s/ /;/g\"`@g" CLANG.bm.in >CLANG.bm

else
  log_debug_warning "Can't find pkg-config in PATH. Will do configuration without it. Compilation will probably fail"
  log_debug_warning "If compilation fail because of missing include, please install pkg-config before reporting"
  sed -e "s@-I((INCLUDES))@@g" -e 's@-L"((LIBRARIES))"@@g' uppsrc/Makefile.in >uppsrc/Makefile
  sed -e "s@-I((INCLUDES))@@g" -e 's@-L"((LIBRARIES))"@@g' uppsrc/uMakefile.in >uppsrc/uMakefile
  sed -e "s@((INCLUDES));@@g" -e "s@((LIBRARIES));@@g" GCC.bm.in >GCC.bm
  sed -e "s@((INCLUDES));@@g" -e "s@((LIBRARIES));@@g" CLANG.bm.in >CLANG.bm

fi

if [ ! -f /usr/lib/libdl.so -a ! -f /usr/lib64/libdl.so ]
then
  sed -i -e s/-ldl//g uppsrc/Makefile
  sed -i -e s/-ldl//g uppsrc/uMakefile
  
fi


log_debug_info "Searching for gmake or make"

if which gmake
then
  make_binary="gmake"
  
elif which make
then
  make_binary="make"

else
  log_debug_error "No 'make' application found in PATH"
  exit 2
fi


log_debug_info "Found $make_binary. Compiling..."
if [ "${#make_parameter_array}" = "0" ]
then
  $make_binary -C uppsrc -e CXX="$CXX"
  $make_binary -C uppsrc -e CXX="$CXX" -f uMakefile
    
else
  $make_binary -C uppsrc -e CXX="$CXX" "${make_parameter_array[@]}"
  $make_binary -C uppsrc -e CXX="$CXX" "${make_parameter_array[@]}" -f uMakefile
    
fi


if [ -f "uppsrc/ide.out" ]
then
  log_debug_info "Installing theide in current directory"
  cp -p "uppsrc/ide.out" ./theide

else
  log_debug_warning "Can't find uppsrc/ide.out binary"

fi

if [ -f "uppsrc/umk.out" ]
then
  log_debug_info "Installing umk in current directory"
  cp -p "uppsrc/umk.out" ./umk

else
  log_debug_warning "Can't find uppsrc/umk.out binary"

fi