#!/bin/bash
#
# Transfer a repo to a different user (or organisation)
# $1 = Module name e.g. e-smith-dnscache
# $2 = Source Organisation (any valid organisation or user)
# $3 = Target Organisation (any valid organisation or user - you need owner privileges)
# $4-$7 can appear in any order and are optional 
#    = "local" will use parameters set for local repository else it will use remote
#    = "force" will automagically delete an existing repo, otherwise it will prompt
#    = "debug" run in debug mode 
#    = "silent" suppress success message
#

if [[ -z $1 ]] ; then
	echo "Transfer a repo to a different user (or organisation)"
	echo "git-transfer-repo.sh <repository> <source organization> ,target organisation> [<local> <force> <debug> <silent>]"
  echo "<repository> = repository name (e.g. smeserver-clamav)"
  echo "<source organisation> (any valid organisation or user)"
  echo "<target organisation> (any valid organisation or user - you need owner privileges)"
  echo " can appear in any order and are optional"
  echo "   - <local> will use parameters set for local repository, else it will use remote"
  echo "   - <force> will automagically delete an existing target repo, otherwise it will prompt"
  echo "   - <debug> run in debug mode"
  echo "   - <silent> suppress success message"
  exit 0
fi

#
# Pull in parameters from a config file ~/.smegit/config
#
inifilename=$(echo ~)"/.smegit/config"
if [ ! -e $inifilename ] ; then
  # Not here, look at system default
  if [ ! -e /etc/smegit.ini ] ; then 
    echo "No ini file found $inifiename or /etc/smegit.ini"
    echo "git-cvs2git.sh <modulename> <organization> [<local>]"
    exit 1
  else
    initfilename="/etc/smegit.ini"
  fi
fi

while read -r line || [[ -n "$line" ]]; do
    if [[ $line =~ ^\[.*\]$ ]]
    then
        section=${line#*[}
        section=${section%]*}
    else
        if [[ $line =~ ^[^#]*= ]]
        then
            key=${line%=*}
            value=${line#*=}
            declare "${section}_${key}=$value"
        fi
    fi
done < "$inifilename"
DEBUG=
if [ ${smegit_DEBUG} == "true" ] ; then DEBUG=true ; fi
if [ $DEBUG ] ; then echo "************found ini file: $inifilename" ; fi

if [[ $smegit_WORKDIR == ~* ]] ; then
    # relative to users home dir
    WORKDIR=$(echo ~)${smegit_WORKDIR:1}
else
    # absolute path
    WORKDIR=${smegit_WORKDIR}
fi

# Command line parameters
REPO=$1
SOURCEORG=$2
TARGETORG=$3

GITEAHOST=${remote_GITEAHOST}
GITEAACCESSTOKEN=${remote_GITEAACCESSTOKEN}
DELETEIT=
NOOUTPUT=
for param in $4 $5 $6 $7; do
  if [ $param ] ; then
    case $param in
      local )
	      GITEAHOST=${local_GITEAHOST}
        GITEAACCESSTOKEN=${local_GITEAACCESSTOKEN}
        ;;
      force )
        DELETEIT=true ;;
      debug )
        DEBUG=true ;;
      silent )
        NOOUTPUT=true ;;
      * )
        echo "Ignoring $param" ;;
    esac
  else
	  break
  fi
done

# Debug settings
# Make this null if you want lots of output. Still quite a bit anyway
QUIET="--quiet"
SILENT="-s"
if [ $DEBUG ] ; then 
	QUIET=
	SILENT="-v"
fi
# Make this null to get curl to check ssl cert
checkSSL="-k"

#Check that source package exists
if [ $DEBUG ] ; then echo "Check if $SOURCEORG/$REPO is there!" ; fi
RESPONSE=$(curl $SILENT -o /dev/null -w "%{http_code}" "$GITEAHOST/api/v1/repos/$SOURCEORG/$REPO")
if [ "$RESPONSE" == "200" ]; then
    if [ $DEBUG ] ; then echo "Repository for $SOURCEORG/$REPO exists!" ; fi
else
    echo "************Repository for $SOURCEORG/$REPO does not exist on $GITEAHOST ($RESPONSE)"
    exit 1
fi

if [ $DEBUG ] ; then echo "Transferring $TARGETORG/$REPO to $SOURCEORG/$REPO" ; fi
#Check that target repo does not exist
if [ $DEBUG ] ; then echo "Check if $TARGETORG/$REPO is there!" ; fi
RESPONSE=$(curl $SILENT -o /dev/null -w "%{http_code}" "$GITEAHOST/api/v1/repos/$TARGETORG/$REPO")
EXISTS=
if [ "$RESPONSE" == "200" ]; then
  EXISTS=true
  if [ $DEBUG ] ; then echo "Repository for $TARGETORG/$REPO exists!" ; fi
  if [ -z ${DELETEIT} ] ; then
    while true; do
      read -p "$TARGETORG/$REPO exists! Do you wish to delete it and continue?(y/n) " yn
		  case $yn in
			    [Yy]* ) 
                DELETEIT=true
                break ;;
			    [Nn]* )
                DELETEIT=
                break ;;
			    * ) echo "Please answer yes or no.";;
		  esac
	  done
  fi
  if [ $DELETEIT ] ; then
    if [ $DEBUG ] ; then echo "Deleting $TARGETORG/$REPO" ; fi
    RESPONSE=$(curl "$checkSSL" "$SILENT" -o /dev/null -w "%{http_code}" -X  'DELETE' \
        "$GITEAHOST/api/v1/repos/$TARGETORG/$REPO" \
        -H 'accept: application/json' \
        -H "Authorization: token $GITEAACCESSTOKEN" )
    if [[ $RESPONSE != "204" ]] ; then
        echo "Unable to delete $TARGETORG/$REPO ($RESPONSE)"
    else
        EXISTS=
    fi
  fi
else
  if [ $DEBUG ] ; then echo "Repository for $SOURCEORG/$REPO does not exist on $GITEAHOST" ; fi
fi

# Transfer the repo
if [[ -z $EXISTS ]] ; then
  if [ $DEBUG ] ; then echo "Actual Transfer" ; fi
  RESPONSE=$(curl "$SILENT" "$checkSSL" -o /dev/null -w "%{http_code}" -X 'POST' \
      "$GITEAHOST/api/v1/repos/$SOURCEORG/$REPO/transfer" \
      -H 'accept: application/json' \
	    -H "Authorization: token $GITEAACCESSTOKEN" \
      -H 'Content-Type: application/json' \
      -d '{ 
          "new_owner": "'"$TARGETORG"'" 
        }'
      )
fi
if [[ $EXISTS || $RESPONSE != "202" ]] ; then
  echo "Unable to transfer $SOURCEORG/$REPO to $TARGETORG/$REPO ($RESPONSE) - Aborting!"
  exit 1
else
  if [[ -z $NOOUTPUT ]] ; then echo "$SOURCEORG/$REPO has been transferred to $TARGETORG/$REPO" ; fi
fi

exit 0