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#!/bin/bash

# set version to use
# check for format 9.2.0 instead of 9.2
if [[ "$1" =~ ^[0-9]{1,2}.[0-9]{1,3}.[0-9]{1,3}$ ]]; then
  REPO_VERSION="$1"
else
  echo -e "\nUsage:"
  echo -e "${0##*/} 9.2.0"
  echo -e "${0##*/} 10.80.3"
  echo -e "all necessary folders are created automatically"
  exit 0
fi

# variables
PATH_STAGING="/var/www/$REPO_VERSION/addons-staging"
PATH_TARGET="/var/www/$REPO_VERSION/addons-temp"
PATH_LOG="/tmp/addon-$REPO_VERSION.log"
PATH_ADDON_REPO="/var/www/addons-repo/$REPO_VERSION"

#### functions
 
# slack notification function
slack () {
  webhook_url="https://hooks.slack.com/services/NOTPUBLIC"
  channel="NOTPUBLIC"
  username="ADDON Bot"
  color="good" #good, warning, danger or HEX value

  text=$*
  if [[ $text == "" ]]; then
    while IFS= read -r line; do
      text="$text$line\n"
    done
  fi
  escapedText=$(echo $text | sed 's/"/\"/g' | sed "s/'/\'/g" )
  json="{\"channel\": \"$channel\", \"username\":\"$username\", \"icon_emoji\":\"ghost\", \"attachments\":[{\"color\":\"$color\" , \"text\": \"$escapedText\"}]}"
  curl -s -d "payload=$json" "$webhook_url"
}

# pretty up the rsync log
rsync_log () {
  # header text
  printf "*Updated Add-ons* \n"

  # list Add-ons
  while IFS="/" read -r project platform addon filename; do
    if [[ $project_rsync != $project ]]; then
      printf ' %s %s %s ' "\n*$project" "$platform" "($REPO_VERSION) *\n"   # some crap due the slack function escape text
      printf '%s' "${filename%.*}\n"
    else
       printf '%s' "${filename%.*}\n"
    fi
    project_rsync=$project
  done < "$PATH_LOG"
}

# create addon.xml
create_addon_xml(){
  for PROJECT in $(find "$PATH_ADDON_REPO"/* -maxdepth 0 -type d); do
    PROJECT=$(basename "$PROJECT")
    for ARCH in $(find "$PATH_ADDON_REPO"/$PROJECT/* -maxdepth 0 -type d); do
      ARCH=$(basename "$ARCH")
      ARCH_XML='<?xml version="1.0" encoding="UTF-8"?>\n<addons>\n'
      for ADDON in $(find "$PATH_ADDON_REPO"/$PROJECT/$ARCH/* -maxdepth 0 -type d); do
        ADDON=$(basename "$ADDON")
        for ARCHIVE in $(find "$PATH_ADDON_REPO"/$PROJECT/$ARCH/$ADDON -type f -name "*.zip" | sort -V); do
          if [ -n "$ARCHIVE" ]; then
            ARCHIVE_XML=$(unzip -pv "$ARCHIVE" "$ADDON/addon.xml" | sed '1d' | cat)
            ARCH_XML="$ARCH_XML$ARCHIVE_XML\n"
          fi
        done
      done
      ARCH_XML="$ARCH_XML</addons>"
      echo -e "$ARCH_XML" > "$PATH_ADDON_REPO"/$PROJECT/$ARCH/addons.xml
      gzip -f "$PATH_ADDON_REPO"/$PROJECT/$ARCH/addons.xml
      md5sum "$PATH_ADDON_REPO"/$PROJECT/$ARCH/addons.xml.gz | cut -f1 -d ' ' > "$PATH_ADDON_REPO"/$PROJECT/$ARCH/addons.xml.gz.md5
      sha256sum "$PATH_ADDON_REPO"/$PROJECT/$ARCH/addons.xml.gz | cut -f1 -d ' ' > "$PATH_ADDON_REPO"/$PROJECT/$ARCH/addons.xml.gz.sha256
    done
  done
}

###############

# check if jenkins addons are avaible
if [ ! -d "$PATH_STAGING" ]; then
  slack "*WARNING*: no jenkins addons folder exist"
  exit 0;
fi

# preparing folder
mkdir -p $PATH_TARGET $PATH_ADDON_REPO

# check for enough free disk space
if [ $(df $PATH_ADDON_REPO | awk 'END {print $4}') -lt 6000000 ]; then
  slack "*WARNING*: not enough storage is available\n\`\`\`$(df $PATH_ADDON_REPO)\`\`\`"
  exit 0;
fi

# kill log
if [ -f "$PATH_LOG" ]; then
  rm -f "$PATH_LOG"
fi

touch "$PATH_LOG"

# create target dir
mkdir -p "$PATH_TARGET"

# check for sha256sum
for PROJECT in "$PATH_STAGING"/*.zip; do
  cd "$PATH_STAGING" || exit
    if sha256sum --status -c $PROJECT.sha256 2>&1; then 
      continue; 
    else 
      # remove files that fail at checksum test
      mv "$PROJECT" "$PROJECT"-ohohhhhh
      slack "*WARNING:* $(basename $PROJECT) wrong checksum \n"
    fi
done

# rename and move files to files 
for PROJECT in "$PATH_STAGING"/*.zip; do
  PROJECT=$(basename "$PROJECT")
  var1=$(echo "$PROJECT" | cut -d- -f1 )                             # 9.0
  var2=$(echo "$PROJECT" | cut -d- -f2 )                             # Generic
  var3=$(echo "$PROJECT" | cut -d- -f3 )                             # x86_64
  var4=$(echo "$PROJECT" | cut -d- -f4- | rev | cut -d- -f2- | rev ) # tools.ffmpeg-tools
  var5=$(echo "$PROJECT" | cut -d- -f4- )                            # tools.ffmpeg-tools-9.0.102.zip

# addon folder structure
# path-to-folder/Generic/x86_64/9.0/tools.ffmpeg-tools
  PATH_ADDON="$PATH_TARGET/$var2/$var3/$var4"
  if [ -e "$PATH_ADDON/$var5" ]; then 
    continue
  else
    mkdir -p "$PATH_ADDON"
    unzip -qn "$PATH_STAGING"/"$PROJECT" -d "$PATH_ADDON"
  fi
done

# rsync to repo folder
mkdir -p "$PATH_ADDON_REPO"
rsync --ignore-existing -vrh "$PATH_TARGET"/* "$PATH_ADDON_REPO" | grep .zip > "$PATH_LOG"

# create addon.xml
create_addon_xml

# post to slack
if [ -s "$PATH_LOG" ]; then
  slack $(rsync_log)
fi