mw-install-extension

#!/bin/bash

if [ -z $1 ]; then
	echo "No name of a MW extension was specified. Exiting." >&2
	exit 1
fi

if [ "$(whoami)" != 'www-data' ]; then
	echo "The script needs to be run as the webserver's user (assumed to be 'www-data'). Exiting." >&2
	exit 1
fi

MW_VER=${2-'1.35'}
echo "No Mediawiki version has been specified. Assuming $MW_VER" >&2

#This script assumes the directory structure specification of WikiDo
MW_BASE_DIR=$(readlink --canonicalize-existing '../')
if [[ "$(head -1 $MW_BASE_DIR/RELEASE-NOTES-$MW_VER)" != "= MediaWiki $MW_VER =" ]]; then
	echo "Mediawiki's instalation base could not be detected. This script must be run in the extensions directory of a MW instance. Exiting." >&2
	exit 1
else
	WIKIDO_EXT_REPO=$(readlink --canonicalize-existing "$MW_BASE_DIR/../extra/extensions")
	if [ $? != 0 ]; then
		echo "Extensions' codebase directory was not found! Exiting." >&2
		exit 1
	else
		echo "Extensions' codebase directory is: $WIKIDO_EXT_REPO" >&2
		echo "Working Extensions directory is: $MW_BASE_DIR/extensions" >&2
	fi
fi

if [ ! -d "$MW_BASE_DIR/extensions/$1" ]; then
	if [ ! -d "$WIKIDO_EXT_REPO/$1-REL${MW_VER/./_}-"* ];  then
		echo "Downloading $1, since it didn't exist in local repository..." >&2
		$(dirname "$0")/mw-get-extension.py --mw-version "$MW_VER" --target-dir "$WIKIDO_EXT_REPO" "$1" >&2
		error_code=$?
		if [ $error_code -ne 0 ]; then
			echo "Something wrong happened while downloading $1. Last error code was $error_code. Check the output above. Exiting." >&2
			exit 1
		else
			echo "done."
		fi
	else
		echo "Skipping downloading $1. It already exists in the repository." >&2
	fi

	echo -n "$1 is being linked from the extensions' repository to the working extensions directory..." >&2
	ln --symbolic --no-target-directory $(ls -d "$WIKIDO_EXT_REPO/$1-"*) "$MW_BASE_DIR/extensions/$1" && echo "done"
else
	if [ -h "$MW_BASE_DIR/extensions/$1" ]; then
		echo "Skipping $1, since it is already installed." >&2
	else
		echo "Skipping $1, since seems to have been bundled with MW $MW_VER." >&2
	fi
fi

echo "Completed." >&2