#!/bin/bash

set -xe

SOURCE_REPOSITORIES=(
  ipl-web
  ipl-validator
  icingaweb2
  icingaweb2-module-director
  icingaweb2-module-vspheredb
  icingadb-web
  icingaweb2-module-reporting
  icingaweb2-module-graphite
  icingaweb2-module-cube
  #icingaweb2-module-idoreports
  icingaweb2-module-aws
  icingaweb2-module-businessprocess
  #icingaweb2-module-doc
  #icingaweb2-module-fileshipper
  #icingaweb2-module-jira
  #icingaweb2-module-nagvis
  icingaweb2-module-pdfexport
  #icingaweb2-module-pnp
  #icingaweb2-module-puppetdb
  #icingaweb2-module-test
  #icingaweb2-module-vsphere
  icingaweb2-module-x509
  #icingaweb2-module-toplevelview
  icingaweb2-module-audit
  icingaweb2-module-elasticsearch
  #icingaweb2-module-eventdb
  #icingaweb2-module-generictts
  #icingaweb2-module-lynxtechnik
)

# Fetch repositories which do not exist yet in the directory
FETCHED_REPOS=();
for repo_name in "${SOURCE_REPOSITORIES[@]}"; do
  if [ ! -d "sources.d/$repo_name" ]; then
    FETCHED_REPOS+=( $repo_name );
    wget -q -O - https://github.com/Icinga/$repo_name/archive/master.tar.gz | tar xz
    mv $repo_name-master/ sources.d/$repo_name
  fi
done

# Create a list of files xgettext should scan
find -L sources.d -regex ".*\.\(php\|phtml\)" ! -path "*/vendor/*" ! -path "*/test/*" > catalog.txt

xgettext --language=PHP \
         --keyword=translate \
         --keyword=translate:1,2c \
         --keyword=translatePlural:1,2 \
         --keyword=translatePlural:1,2,4c \
         --keyword=mt:2 \
         --keyword=mt:2,3c \
         --keyword=mtp:2,3 \
         --keyword=mtp:2,3,5c \
         --keyword=t \
         --keyword=t:1,2c \
         --keyword=tp:1,2 \
         --keyword=tp:1,2,4c \
         --keyword=N_ \
         --from-code=utf-8 \
         --files-from=catalog.txt \
         --sort-by-file \
         --copyright-holder="Icinga GmbH" \
         --package-name="Icinga L10n" \
         --package-version=$(git describe --always) \
         --msgid-bugs-address=https://github.com/Icinga/L10n/issues \
         --default-domain=icinga \
         --output=icinga.pot

# Re-add the PoEdit header extensions
REPLACE_CODE=$(cat << PYTHON
import sys, re
result = re.sub(
    r'msgid \"\"\nmsgstr \"\"(\n\".*\")+',
    '\g<0>\n'
        + '\"X-Poedit-Basepath: ../../../src\\\\\\\\n\"\n'
        + '\"X-Poedit-SearchPath-0: sources.d\\\\\\\\n\"',
    sys.stdin.read()
)
from datetime import date
result = result.replace(
    '# Copyright (C) YEAR Icinga GmbH',
    '# Copyright (C) {0} Icinga GmbH'.format(date.today().year),
    1
)
sys.stdout.write(result)
PYTHON
)
cat icinga.pot | python -c "$REPLACE_CODE" > temp; mv temp icinga.pot

# Cleanup created files and directories
rm catalog.txt
for repo_name in "${FETCHED_REPOS[@]}"; do
  rm -rf sources.d/$repo_name
done

# Check for changes (new messages) that need to be committed
CHANGES=1
git diff -U0 \
  | grep -Pe '^[+-]{1}(?!#:)[^+-]+' \
  | grep -qv -e '."Project-Id-Version:' -e '."POT-Creation-Date:' \
|| CHANGES=0

if [ $CHANGES -eq 0 ]; then
  echo "No new messages found.";
  git checkout icinga.pot;
else
  STATS=""

  # Update intermediate (in-progress) catalogs
  LOCALES=$(find . -mindepth 1 -maxdepth 1 -type d -regextype grep -regex '\./[a-z]\{2\}_[A-Z]\{2\}' -printf "%P ")
  for locale_name in $LOCALES; do
    msgmerge --update --backup=none --lang=$locale_name --sort-by-file $locale_name/LC_MESSAGES/icinga.po icinga.pot

    STATS_OUT=$(LC_ALL=C msgfmt --statistics $locale_name/LC_MESSAGES/icinga.po 2>&1 >/dev/null)
    if [ -f "messages.mo" ]; then
      rm "messages.mo"
    fi

    # TODO: Make this a function? (is also used in bin/validate)
    TRANSLATED=0
    UNTRANSLATED=0
    FUZZY=0

    RE="[0-9]+"
    LAST_LINE=$(echo "$STATS_OUT" | tail -1)
    for chars in $LAST_LINE; do
      if [[ "$chars" =~ $RE ]] && [[ ${BASH_REMATCH[0]} ]]; then
        LAST_CNT="${BASH_REMATCH[0]}"
      else
        case $chars in
          "translated")
            TRANSLATED=$LAST_CNT
          ;;
          "fuzzy")
            FUZZY=$LAST_CNT
          ;;
          "untranslated")
            UNTRANSLATED=$LAST_CNT
          ;;
        esac
      fi
    done

    PROGRESS=$(python -c "print (int(round(($TRANSLATED.0 / ($TRANSLATED + $UNTRANSLATED + $FUZZY)) * 100)))")
    STATS+=" $locale_name:$PROGRESS%"
  done

  # Update locale statistics
  python -c "import json; \
    print ( \
      json.dumps({k: v for k, v in (kv for kv in (s.split(':') for s in '$STATS'.strip().split()))}) \
    ) \
  " > ../.github/stats.json

  echo "New messages found!";
  # Working tree is left dirty as the following step creates a new pull request
fi