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#!/bin/bash

WIKIROOT=/home/hugo/wiki/
WIKI_LIST=$(ls $WIKIROOT | grep -v html)

# A simple script for managing a vimwiki git repo.
# Allows slightly simpler edits and commits.

wiki_list=""

#
# Adds all files to git, and commits with either the arguments as
# message, or with the current time as the message.
# Assumes that PWD is a git repo.
#
function commit {
	if [ $# -lt 2 ]; then
		msg="$(date)"
	else
		msg="$*"
	fi
	git add -A
	git commit -m "$msg"
}

#
# Like commit above, but ammends
#
function ammend {
	if [ $# -eq 1 ]; then
		git commit --amend
	else
		msg="$*"
		git commit --amend -m "$msg"
	fi
}

#
# Run function on wiki
#
function wiki_do {
	wiki=$1
	command=$2

	pushd $WIKIROOT/$wiki

	shift
	case $command in
		commit)
			shift
			commit $@
			;;
		ammend)
			shift
			ammend $@
			;;
		g|go)
			commit $@
			git push
			;;
		echo)
			echo "-- $wiki --"
			;;
		*)
			eval "git $@"
			;;
	esac
}

# == MAIN ==

#
# Parse command line options
#
while [ $# -ne 0 ]; do
	case $1 in
		-w|--wiki)
			shift
			wiki_list="$1 $wiki_list"
			shift
			;;
		-l|--list)
			shift
			echo "Available Wikis:"
			echo "================"
			for w in $WIKI_LIST; do
				echo " - $w"
			done
			exit
			;;
		-h|--help|-?)
			shift
			cat - <<- EOF
		Wiki helper. Usage:
		--help | -h :: Display this help 
		--list | -l :: Show available wikis
		--wiki | -w <wiki> :: specify a specific wiki for operation

		Default acts on all wikis.

		wi commit [msg] :: Create a git commit on specified wikis
		wi ammend [msg] :: Change last commit
		wi g [msg] :: wi commit [msg]; wi push
		wi [git-command] :: run git commands on wikis
		EOF
		exit
		;;
	*)
		break
		;;
	esac
done

# Edit the given wiki if no further argument is given
if [ $# -eq 0 ]; then
	set -- ${wiki_list:-$WIKI_LIST}
	vim $WIKIROOT/$1/index.*
	exit
fi

# Run given command for all wikis
for wiki in ${wiki_list:-$WIKI_LIST}; do
	echo "== $wiki =="
	wiki_do $wiki $@ &
done

wait