#!/bin/sh
DOCDIR="./doc/"
FILESTOTRANSLATE="doc/en_US.ISO8859-1"
DATAFILE="./translation-status.csv"
LANGPARAM="$1"

# commands
AWK="/usr/bin/awk"
BASENAME="/usr/bin/basename"
CUT="/usr/bin/cut"
FIND="/usr/bin/find"
PRINTF="/usr/bin/printf"
SVN="/usr/bin/svnlite"
WC="/usr/bin/wc"
SED="/usr/bin/sed"
SORT="/usr/bin/sort"
GREP="/usr/bin/grep"


FIND_EN_DOC=`${FIND} ${DOCDIR} -name "??_*" -type d -depth 1 -print | ${SORT} | ${GREP}  -v en_US`

check_docdir() {
  if [ ! -d "${DOCDIR}" ]; then
    DOCDIR="doc/"
    if [ ! -d "${DOCDIR}" ]; then
      echo "** document directory not found, please edit and set DOCDIR"
      echo "** value to document checkout directory, like ~/doc"
      exit 1
    fi
  fi
}

check_lang_param() {
  if [ "${LANGPARAM}" ]; then
    # parameter was given, assume it is a single language directory
    case "${LANGPARAM}" in ??_??*) ;;
      # did not match the language code pattern
      *)  echo "** parameter does not look like a language directory name,"
	  echo "** expecting xx_YY*, like es_ES.ISO8859-1"
	  exit 1 ;;
    esac
    LANGDIR=`${FIND} ${DOCDIR} -depth 1 -name "${LANGPARAM}".*`
    LANGS=`${BASENAME} ${LANGDIR}`
  else
    LANGS=${FIND_EN_DOC}
  fi
}

create_datafile() {
  echo "writing CSV data to ${DATAFILE}"
  ${PRINTF} > "${DATAFILE}" "langcode,pubtype,docname,status,needs updating\r\n"
}

print_title() {
  echo "FreeBSD document translations"
  echo
}

print_header() {
  # title
  ${PRINTF} "  %-29s  %-12s   %-12s\n" document status needs_updating
  ${PRINTF} "  %-27s  %-12s   %-12s\n" "-------------------------" "--------------" "--------------------------"
}

print_data() {

  langcode="$1"
  pubtype="$2"
  name="$3"
  status="$4"
  updating="$5"

  ${PRINTF} "  %-29s  %-12s   %-12s\n"  ${name} ${status} ${updating}
  ${PRINTF} >> "${DATAFILE}" "%s,%s,%s,%s,%s\r\n" ${langcode} ${pubtype} ${name} ${status} ${updating}
}

# Obtains the last modified date for a given file.
get_file_date(){

 filename=$1
 filedate=""

 if [ -e "${filename}" ]; then
   filestat=`${SVN} stat ${filename} 2>&1 | ${CUT} -w -f1`
   if [ "${filestat}" != "?" -a "${filename}" != "svn:" ]; then
     if [ "${filestat}" = "A" ]; then
      # file has been added but not yet committed, no dates available
      filedate="*"
     else
      filedate=`${SVN} log -l 1 ${filename} | ${AWK} 'NR==2 { print $5 }'| ${SED} 's/\-//g'`
     fi
   fi
 fi

}

# Get the status of a given publication.
get_doc_status(){

  pubtype=$1
  langcode=$2
  currdir=${PWD}


  cd ${FILESTOTRANSLATE}/${pubtype}/

  echo
  echo "**************" ${pubtype}
  echo

  doclist=`ls -d */ | sort`
  echo

  cd ${currdir}

  langdir=${DOCDIR}${langcode}

  print_header

  for doc in ${doclist}; do

   documents_total=$((${documents_total}+1))

    originalfile=${FILESTOTRANSLATE}/${pubtype}/${doc}

    get_file_date ${originalfile}

    originaldate=${filedate}
    translationdir=${langdir}/${pubtype}/${doc}
    dirbasename=`${BASENAME} "${translationdir}"`


    if [ -d "${translationdir}" ]; then

      documents_translated=$((${documents_translated}+1))

      status="translated"
      pofile="${translationdir}/${langcode}.po"
      altfile="${translationdir}/Makefile"

      if [ -e "${pofile}" ]; then
        get_file_date ${pofile}
      else
        if [ -e "${altfile}" ]; then
          get_file_date ${altfile}
        fi
      fi

      lastdate=${filedate}

      if [ "${lastdate}" == "*" ]; then
        # The file has been added to SVN but it hasn't been commited.
        updating="N/A"
        status="NOT_IN_SVN"
      else

      # The file is on SVN.
      if [ -d "${translationdir}" ]; then
        if [ ${originaldate} -gt ${lastdate} ]; then
          updating="YES"
        else
          updating="NO"
        fi
      fi

    fi

  else
       # The file has not been translated.
       status="untranslated"
       updating="N/A"
  fi

   print_data ${langcode} ${pubtype} ${dirbasename} ${status} ${updating}

 done

}


main() {

  documents_translated=0
  documents_total=0

  print_title

  check_docdir
  check_lang_param
  create_datafile

  echo

  for lang in ${LANGS}; do

    langcode=`${BASENAME} ${lang}`
    langcode_header=`${PRINTF} "%-.5s" ${langcode}`
    echo "-----------------------------" ${langcode_header} "-----------------------------"
    echo
    echo


    get_doc_status articles ${langcode}
    get_doc_status books ${langcode}
    get_doc_status captions ${langcode}
    get_doc_status htdocs ${langcode}
    get_doc_status slides ${langcode}

    echo
    echo "================================="
    echo "Statistics"
    echo
    echo
    echo "      Total documents to translate: "${documents_total}
    echo "      Documents translated: "${documents_translated}
    percentage=$(( 100* documents_translated/ documents_total ))
    echo "      "${percentage}" % translated"
    echo "==================================="

    documents_translated=0
    documents_total=0

  done

}

main