#!/bin/bash

scriptName=$(basename $0)
version=0.1
original=""
sources=""
verbose=0
tmpFilename='.tmp.compile_commands.json'
srcOriginalPath="../../git/src"

function print {
  verbose=$1
  message=$2
  if [[ $verbose -eq 1 ]]; then
    echo "[V] $message"
  fi
}

function usage {
  echo "
	Usage: $scriptName [OPTIONS]
	Options: 
  [-o|--original] - location of a original compile_commands.json (e.g. -o /tmp/test/compile_commands.json)
  [-s|--sources] - location of your sources directory (e.g. /external_chr/src/)
  [-g|--gitsrc] - location of an original src directory; default ../../git/src/ (relative to build/Release)
	"
}

function about {
  echo "
  ${scriptName} ver.${version} 
  This script's purpose to deal with external sources of a project for which compile commands
  are generated.
  for usage examples call 
    ${scriptName} [-h|--help] 
  "
}

while [[ "$1" =~ ^- && ! "$1" == "--" ]]; do
  case $1 in
  -a | --about)
    about
    exit
    ;;
  -h | --help)
    usage
    exit
    ;;
  -o | --original)
    shift
    original=$1
    ;;
  -s | --sources)
    shift
    sources=$1
    ;;
  -g | --gitsrc)
    shift
    srcOriginalPath=$1
    ;;
  -v | --verbose)
    verbose=1
    ;;
  esac
  shift
done

print $verbose "original=$original && sources=$sources"

cp $original $tmpFilename

buildDirectory=$(grep directory $original | head -n 1 | cut -d ':' -f 2 | cut -d '"' -f 2)

print $verbose "buildDirectory=$buildDirectory"

if command -v pv &>/dev/null; then
  pv $tmpFilename | sed "s|${srcOriginalPath}|${sources}|g" >${sources}/compile_commands.json
else
  echo "pv was not found on PATH so just wait..."
  sed "s|${srcOriginalPath}|${sources}|g" $tmpFilename
  cp $tmpFilename ${sources}/compile_commands.json
fi

print $verbose "original compile_commands src path ($srcOriginalPath) was changed to $sources"

rm $tmpFilename