#!/bin/bash
#包含dispOption脚本
. dispOptions
#初始化参数
_repository_address="/Users/zhangyi/Code/GitHub/YiZhangCUG.github.io"
_posts_address="_posts/"
_posts_sub_address="2018/"
_mfile='README.md'
_layout='post'
_title='Null'
_categories='Null'
_tags='Null'
#获取当前日期加时间加时区
_nowtime=`date +"%Y-%m-%d %H:%M:%S %z"`
#初始化输出文件名
_outfile=`date +"%Y-%m-%d-"`
_outfile_end='Null'
#是否保留输出文件
_savefile=0
#从命令行获取参数
while getopts "hSi:l:T:c:t:s:" arg
do
	case $arg in
		h)
			dispTitle "${0##*/}" "Post a markdown file to a personal blog hosted on the Github.io. The site is powered by Jekyll (https://jekyllrb.com)."
			dispAuthorInfo "Yi Zhang (zhangyi.cugwuhan@gmail.com)"
			dispUsage "${0##*/} -i<markdown-file> [-l<layout>] [-T<title>] [-c<categories>] [-t<tags>] [-s<sub-directory>] [-S] [-h]"
			dispOptionShort "-i" "Input markdown file. The default is '${_mfile}'."
			dispOptionShort "-l" "Page layout defined in Jekyll's styles. The default is '${_layout}'."
			dispOptionShort "-T" "Blog title. The default will use the h1 level title in the input markdown file. The use of this option will overwrite the default. The output filename will use the current date plus the blog title. Note that following symbols in the title will be replaced by the '-' symbol: '!','@','#','$','%','^','&','*','_',':'."
			dispOptionShort "-c" "Blog categories that are separated by commas. The default is/are '${_categories}'."
			dispOptionShort "-t" "Blog tags that are separated by commas. The default is/are '${_tags}'."
			dispOptionShort "-s" "Sub-directory of the posts. The main directory of the posts is placed under '${_posts_address}' folder of your Github.io directory. The default is ${_posts_sub_address}."
			dispOptionShort "-S" "Save output markdown file. The default will remove the output file after committing the blog to Github."
			dispOptionShort "-h" "Show help information."
			exit 0;;
		i)
			_mfile=$OPTARG;;
		l)
			_layout=$OPTARG;;
		T)
			_title=$OPTARG;;
		c)
			_categories=$OPTARG;;
		t)
			_tags=$OPTARG;;
		s)
			_posts_sub_address=$OPTARG;;
		S)
			_savefile=1;;
		?)
			printf "\e[1m\e[31mError ==>\e[0m Unknow argument.\n"
			printf "Use -h option to see help information.\n"
			exit 1;;
	esac
done

#检测_title是否设置 如果设置则跳过拾取部分
if [[ ${_title} != 'Null' ]]; then
	#读入输入文件输出到临时文件
	if [[ -f ${_mfile} ]]; then
		_tmpfile=`mktemp tmp.XXXX`
		while read oneline
		do
			echo ${oneline} >> ${_tmpfile}
		done < ${_mfile}
	else
		printf "\e[1m\e[31mError ==>\e[0m File not found: ${_mfile}\n"
		exit 1
	fi
	# remove special symbols from the title
	_outfile_end=${_title//[:_!@#\$\%\^\&\*]/''}
	_outfile_end=${_outfile_end// /-}
else
	#读入输入文件输出到临时文件
	if [[ -f ${_mfile} ]]; then
		_tmpfile=`mktemp tmp.XXXX`
		while read oneline
		do
			if [[ `echo ${oneline} | grep "^# "` ]]; then
				_outfile_end=${oneline:2}
			else
				echo ${oneline} >> ${_tmpfile}
			fi
		done < ${_mfile}
	else
		printf "\e[1m\e[31mError ==>\e[0m File not found: ${_mfile}\n"
		exit 1
	fi

	#检测_outfile_end是否找到
	if [[ ${_outfile_end} != 'Null' ]]; then
		_title=${_outfile_end}
		# remove special symbols from the h1 title
		_outfile_end=${_outfile_end//[:_!@#\$\%\^\&\*]/''}
		_outfile_end=${_outfile_end// /-}
	else
		printf "\e[1m\e[31mError ==>\e[0m No h1 level title found in: ${_mfile}.\n"
		printf "Please set the blog title and output file name manually.\n"
		printf "\e[1m\e[32m==>\e[0m "
		read _outfile_end
		_title=${_outfile_end}
		# remove special symbols from the input title
		_outfile_end=${_outfile_end//[:_!@#\$\%\^\&\*]/''}
		_outfile_end=${_outfile_end// /-}
	fi
fi

#合成输出文件名称
_outfile=${_outfile}${_outfile_end}.md
#将头信息和临时文件内容拷贝到_outfile 然后删除临时文件
echo "---" > ${_outfile}
echo "layout: ${_layout}" >> ${_outfile}
echo "title: \"${_title}\"" >> ${_outfile}
echo "date: ${_nowtime}" >> ${_outfile}
echo "categories: [${_categories}]" >> ${_outfile}
echo "tags: [${_tags}]" >> ${_outfile}
echo "---" >> ${_outfile}
echo "" >> ${_outfile}
echo "* content" >> ${_outfile}
echo "{:toc}" >> ${_outfile}
echo "" >> ${_outfile}
echo "" >> ${_outfile}
cat ${_tmpfile} >> ${_outfile}
rm ${_tmpfile}

#pull your git repository
git --git-dir=${_repository_address}/.git --work-tree=${_repository_address} pull
# copy output markdown file to posts directory
cp ${_outfile} ${_repository_address}/${_posts_address}${_posts_sub_address}
#add file to git
git --git-dir=${_repository_address}/.git --work-tree=${_repository_address} add ${_posts_address}${_posts_sub_address}${_outfile}
# commit changes
git --git-dir=${_repository_address}/.git --work-tree=${_repository_address} commit -m "added file ${_outfile}"
# push to remote
git --git-dir=${_repository_address}/.git --work-tree=${_repository_address} push

#是否保存文件
if [[ ${_savefile} == 0 ]]; then
	rm ${_outfile}
fi