#!/bin/bash

# Copies an installed drupal theme, either a downloaded
#
# This script helps maintain a drupal installation group.

# include library file
. "`dirname ${0}`/drupalLibrary.sh"


# Dumps out script usage
printUsage() {
	echo -e " "
	echo -e "Copies existing, but versioned, themes for local modification."
	echo -e " "
	echo -e "Usage: "
	echo -e "\t`basename $0` [-noconfirm] [ -copyname <target theme name> ] <existing theme name> <INSTALL> [install group root dir]"
	echo -e " "
	echo -e "<existing theme name> is the name of an existing theme to copy."
	echo -e "\tThis can be a core theme (part of the drupal install, found in /themes) or"
	echo -e "\ta contrib theme (downloaded, found in the 'themes/contrib' dir for a site)."
	echo -e " "
	echo -e "<target theme name> is the target name of the dir."
	echo -e "\tIf -copyname is specified, this will be the resulting theme."
	echo -e "\tIf not specified, the target name is the install name."
	echo -e " "
	outputInstallGroupUsage
	echo -e " "
	echo -e "-noconfirm supresses comfirmation request on non-reporting operations"
	echo -e " "
}


#########

# Param handling
if [ $# -eq 0 ]; then
	printUsage
	exit 0
fi
echo " "

# Handle flags
while (true); do
	case "${1}" in
	-noconfirm )
		pNoConfirm="-noconfirm"
		shift
		;;
	-copyname )
		shift
		pTargetName="$1"
		shift
		;;
	* )
		break;
		;;
	esac
done

if [ $# -lt 2 -o $# -gt 3 ]; then
	echo -e "** Invalid number of parameters specified\n"
	printUsage
	exit 1
fi

pSourceTheme="${1}"
pInstall="${2}"
if [ -z "${pTargetName}" ]; then
	pTargetName="${pInstall}"
fi

# process Group Root Dir
pRootDir="`getGroupRootDir "${3}"`"
errorStr="`validateGroupRootDir "${pRootDir}"`"
if [ -n "${errorStr}" ]; then
	echo -e "${errorStr}\n"
	printUsage
	exit 1
fi

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

# Validate site
errorStr="`validateSite "${pInstall}" "${pRootDir}"`"
if [ -n "${errorStr}" ]; then
	echo -e "** Error with specified install: ${errorStr}\n"
	exit 1
fi

# Find source theme.  Look at core themes first.
targetDir="`getTargetDir "${pInstall}" "${pRootDir}"`"
contribThemeDir="`getContribThemeDir "${pInstall}" "${pRootDir}"`"

if [ -d "${targetDir}/themes/${pSourceTheme}" ]; then
	echo "Copying core theme '${pSourceTheme}' as (new) theme '${pTargetName}'"
	themeSourceDir="${targetDir}/themes/${pSourceTheme}"

elif [ -d "${contribThemeDir}/${pSourceTheme}" ]; then
	echo "Copying contrib theme '${pSourceTheme}' as (new) theme '${pTargetName}'"
	themeSourceDir="${contribThemeDir}/${pSourceTheme}"

else
	echo -e "** Theme '${pSourceTheme}' not found in core or contrib directories.  Aborting.\n"
	exit 1

fi

# Destination
themeDestDir="`getThemeDir "${pInstall}" "${pRootDir}"`/${pTargetName}"
if [ -d "${themeDestDir}" ]; then
	echo -e "** Destination theme directory '${themeDestDir}' already exists.  Aborting.\n"
	exit 1
fi
echo "Destination directory: '${themeDestDir}'"

if [ -z "${pNoConfirm}" ]; then
        echo ""
        echo "Press <return> to continue, or ^C to quit..."
        read
fi

# Copy
cp -r "${themeSourceDir}" "${themeDestDir}" || {
	echo -e "** Unable to copy theme directory.  Aborting.\n"
	exit 1
}

# Remove .git directory if it exists
cd "${themeDestDir}" || {
	echo -e "** Cannot cd to (just created) theme target directory '${themeDestDir}'.  Aborting.\n"
}
rm -rf .git

# Done
echo -e "\n** Done."