#!/bin/env zsh

# License: GPL v2.0 and newer

# Script to generate static html files from input
# Includes
# - Header
# - Body
# - Footer

VERSION="0.5.5"
root_dir=${HOME}/www/text
OUTPUT=${HOME}/www/html
HEADER=${root_dir}/site/header.tpl
FOOTER=${root_dir}/site/footer.tpl
BLOG_TPL=${root_dir}/site/blog.tpl
BLOG_IDX_TPL=${root_dir}/site/blog_index.tpl
TODAY=$( date "+%Y-%m-%d - %T" )
BLOGDATE=$( date +%a-%Y-%b-%d )

builtin cd ${root_dir}

function header() {

	if [[ $( grep title ${1} | head -2) ]]; then
		title=$( cat ${1} | head -2 | grep \#title | cut -d= -f2 )
		NEW_HEADER=$( cat ${HEADER} | sed -e "s|#pagetitle|${title}|" )
	else
		NEW_HEADER=$( cat ${HEADER} | sed -e "s|#pagetitle|No\ title\ supplied|" )
	fi
	echo ${NEW_HEADER} > ${OUTPUT}/${1%.*}.html

}

function footer() {

	NEW_FOOTER=$( cat ${FOOTER} | sed -e "s|#updated|${TODAY}|" | sed -e "s|#version|${VERSION}|" )
	echo ${NEW_FOOTER} >> ${OUTPUT}/${1%.*}.html

}

function exturl() {

	local get_ext_url
	local ext_url_link
	local ext_url_dest
	local ext_url_txt

	cat ${OUTPUT}/${1%.*}.html | sed "s/\.\ /\.\\n/g" | sed "s/\,/\,\\n/g" | grep -P '(?=.*?#ext)' |\
		while read ext_url
		do
			#echo "MAIN: (${1}) ${ext_url}"
			get_ext_url=$( echo ${ext_url} | awk '/#ext/' | cut -d# -f2 )
			#echo "EXT_GET_URL: ${get_ext_url}"
			ext_url_link=$( echo ${get_ext_url} | cut -d' ' -f2- )
			#echo "EXT_URL_LINK: ${ext_url_link}"
			ext_url_dest=$( echo ${ext_url_link} | cut -dÅ -f1 | cut -dÅ -f1 )
			#echo "EXT_URL_DEST: ${ext_url_dest}"
			ext_url_txt=$( echo ${ext_url_link} | cut -dÅ -f2- | cut -dÅ -f1 )
			#echo "EXT_URL_TXT: ${ext_url_txt}"
			echo ${url_link} |\
				sed -i -- 's|'${ext_url_dest}'|<a href=\"'${ext_url_dest}'\">|' ${OUTPUT}/${1%.*}.html
				sed -i -- 's|'${ext_url_txt}'|'${ext_url_txt}'<img class=\"exticon\" alt=\"External site icon\" src=\"/images/ext-url.png\" width=\"16\"\ /><\/a>|' ${OUTPUT}/${1%.*}.html
				sed -i -- "s|#ext\ ||" ${OUTPUT}/${1%.*}.html
		done

}

function url() {

	local get_url
	local url_link
	local url_dest
	local url_txt

	cat ${OUTPUT}/${1%.*}.html | sed "s/\.\ /\.\\n/g" | sed "s/\,/\,\\n/g" | grep -P '(?=.*?#inturl)' |\
		while read url
		do
			get_url=$( echo ${url} | awk '/#inturl/' | cut -d# -f2 )
			#echo "INT_GET_URL: ${get_url}"
			url_link=$( echo ${get_url} | cut -d' ' -f2- )
			#echo "INT_URL_LINK: ${url_link}"
			url_dest=$( echo ${url_link} | cut -dÅ -f1 | cut -dÅ -f1 )
			#echo "INT_URL_DEST: ${url_dest}"
			url_txt=$( echo ${url_link} | cut -dÅ -f2 | cut -dÅ -f1 )
			#echo "INT_URL_TXT: ${url_txt}"
			echo ${url_link} |\
				sed -i -- 's|'${url_dest}'|<a href=\"'${url_dest}'\">|' ${OUTPUT}/${1%.*}.html
				sed -i -- 's|'${url_txt}'|'${url_txt}'<\/a>|' ${OUTPUT}/${1%.*}.html
				sed -i -- "s|\#inturl\ ||" ${OUTPUT}/${1%.*}.html
		done

}

function img() {

	cat ${OUTPUT}/${1%.*}.html | sed "s/\.\ /\.\\n/g" | sed "s/\,/\,\\n/g" | grep -P '(?=.*?showimg)' |\
		while read img
		do
			local get_img
			local img_link
			local image
			local img_alt
			get_img=$( echo "${img}" | awk '/#showimg/' | cut -d# -f2-)
			#echo "GET_IMG: $get_img"
			img_link=$( echo ${get_img} | cut -d' ' -f2- )
			#echo "IMG_LINK: $img_link"
			image=$( echo ${img_link} | cut -dÅ -f1 | cut -dÅ -f1- )
			#echo "IMAGE: $image"
			img_alt=$( echo ${img_link} | cut -dÅ -f2- | cut -dÅ -f1- )
			#echo "IMG_ALT: $img_alt"
			echo ${img_link} |\
				sed -i -- "s|${image}|<img\ src=\"\/images\/${image}\"|" ${OUTPUT}/${1%.*}.html
				sed -i -- 's|'${img_alt}'|\ alt=\"'${img_alt}'\"\ width=\"500\"\ \/>|' ${OUTPUT}/${1%.*}.html
				sed -i -- "s|\#showimg\ ||" ${OUTPUT}/${1%.*}.html
		done
}

function clean_url() {

	sed -i -- "s|Å||g" ${OUTPUT}/${1%.*}.html

}

function html() {

	sed -i -- "s/\#BR/<br\ \/>/g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s/\#P/<p>/g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s/\#EP/<\/p>/g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s/\#Q/<blockquote>/g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s/\#EQ/<\/blockquote>/g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#STRONG|<strong>|g" ${OUTPUT}/${1%.*}.html
    sed -i -- "s|\#ESTRONG|</strong>|g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#I|<i>|g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#EI|<\/i>|g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#C|<code>|g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#EC|<\/code>|g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#EM|<em>|g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#SEM|<\/em>|g" ${OUTPUT}/${1%.*}.html
	sed -i -- "s|\#OT|\&quot;|g" ${OUTPUT}/${1%.*}.html

}

function make_blog() {

	ls -har blog/*blog |\
		while read blog
		do
			# Array sdate = Name day=4, Year=2, Month=3, Number day=1
			sed -i "s/GETDATE/${BLOGDATE}/" ${blog}
			# sed -i "s/\'/\\\'/g" ${blog}
			sdate=( $( cat ${blog} | grep DATE | sed "s|DATE\ ||" | sed "s|\-|\ |g" ) )
			btitle=$( cat ${blog} | grep BLOG_TITLE | cut -d' ' -f2- )
			ingress=$( cat ${blog} | sed "s/'/\\\'/g" | xargs | grep -Po "#INGRESS_START\K(.*?)#INGRESS_STOP" | sed "s/\ \#INGRESS_STOP//" | sed "s/^\ //" )
			body=$( cat ${blog} | sed "s/'/\\\'/g" | xargs | grep -Po "#BODY_START\K(.*?)#BODY_STOP" | sed "s/\ \#BODY_STOP//" | sed "s/^\ //" )
			blog_index=$( echo ${btitle} | sed -e "s|-|_|" | sed -e "s|\ |-|g" | sed -e "s|\,||g" | sed -e "s|\.||" )
			blog_dir="/blog/${sdate[2]}/${sdate[3]}/${sdate[4]}"
			blog_url="${blog_dir}/${blog_index}.html"
			
			if [[ ! -d ${OUTPUT}${blog_dir} ]]; then
				mkdir -p ${OUTPUT}${blog_dir}
			fi

			cat ${BLOG_IDX_TPL} | sed \
				-e "s|BLOGTITLE|${btitle}|" \
				-e "s|CALADAY|${sdate[1]}|" \
				-e "s|CALNDAY|${sdate[4]}|" \
				-e "s|CALMONTH|${sdate[3]}|" \
				-e "s|CALYEAR|${sdate[2]}|" \
				-e "s|BLOGURL|${blog_url}|" \
				-e "s|INGRESS|${ingress}|" \
				-e "s|DATE\ ||" \
				> ${blog%.*}.idx

			if [[ ! $( cat ${blog%.*}.idx | grep \#title ) ]]; then
				NEW_HEADER=$( cat ${HEADER} | sed -e "s|#pagetitle|${btitle}|" )
			else
				NEW_HEADER=$( cat ${HEADER} | sed -e "s|#pagetitle|Blog|" )
			fi
			echo ${NEW_HEADER} > ${OUTPUT}${blog_url}
			
			cat ${BLOG_TPL} | sed \
				-e "s|BLOGTITLE|${btitle}|" \
				-e "s|CALADAY|${sdate[1]}|" \
				-e "s|CALNDAY|${sdate[4]}|" \
				-e "s|CALMONTH|${sdate[3]}|" \
				-e "s|CALYEAR|${sdate[2]}|" \
				-e "s|INGRESS|${ingress}|" \
				-e "s|BODY|${body}|" \
				-e "s|DATE\ ||" \
				-e "s|\#title||" \
				>> ${OUTPUT}${blog_url}

			NEW_FOOTER=$( cat ${FOOTER} | sed -e "s|#updated|${TODAY}|" | sed -e "s|\#version|${VERSION}|" )
			echo "Generating: footer for ${blog_url}"
			echo ${NEW_FOOTER} >> ${OUTPUT}${blog_url}
			html ${blog_url}
			img ${blog_url}
			url ${blog_url}
			exturl ${blog_url}
			clean_url ${blog_url}
		done
				
}

function blog_index() {

	make_blog
	ls -har blog/*idx |\
	while read blogs
	do
		cat ${blogs} >> ${OUTPUT}/index.html
	done
	html ${1}
	url ${1}
	img ${1}

}

function body() {

	html ${1}
	url ${1}
	img ${1}
	cat ${1} | grep -v "\#title=" >> ${OUTPUT}/${1%.*}.html

}

function generate() {
	echo "Generating: ${1%.*}.html"
	header ${1}
	body ${1}
	html ${1}
	url ${1}
	img ${1}
	exturl ${1}
	clean_url ${1}
}

if [[ ! ${1} ]]; then

	ls -1bt *tpl |\
	while read t
	do
		generate ${t}
	done

if [[ -d blog ]]; then
	echo "Generating: blog entries"
	blog_index index.idx
	
	echo "Generating: blog index file"
	rm -f blog/index.html
	ls -1bt blog/*blog |\
	while read b
	do
		cat ${b%.*}.idx >> blog/index.html
	done
	header blog/index.html
	cat blog/index.html >> ${OUTPUT}/blog/index.html
	footer blog/index.html
fi

	ls -1bt *tpl |\
	while read t
	do
		echo "Generating: footer for ${t%.*}.html"
		footer ${t}
	done

else

	generate ${1}
	echo "Generating: footer for ${1%.*}.html"
	footer ${1}

fi