#! /usr/bin/env bash

function build {
    # First build the main page
    pandoc main.tex -f latex -t html -s -o index.html --template './template.html' --metadata title='Jelle Langedijk' &&

    # If succeeds, build the blog index as well! :)
    ## First we compile a list of all blogfiles to include
    ## To Check the amount of blogiles there are:  echo ${#blog_files[0]}
    ## To index the array: ${blog_files[0]} (1,2,3,4...)
    mapfile -t blog_files < <( ls -t ./blog | grep .tex | grep -v -e main -e linkstoblogs )
    : > ./blog/linkstoblogs.tex # Send the null command to the file. Effectively clears it.
    for texname in ${blog_files[@]}; do
        htmlname="${texname/.tex/.html}"
        blogname="${texname/.tex/}"
        #blogdate=$(date -r "./blog/${texname}" "+%Y-%m-%d %H:%M:%S %Z")
        # Read (Custom) metadata block. use AWK do grab correct parts, use xargs to remove whitespaces
        blogdate=$(head -n 3 "./blog/${texname}" | grep date | awk '{$1=$2=""; print $0}' | xargs)
        blogtitle=$(head -n 3 "./blog/${texname}" | grep title | awk '{$1=$2=""; print $0}' | xargs)
        blogauthor=$(head -n 3 "./blog/${texname}" | grep author | awk '{$1=$2=""; print $0}' | xargs)
        # Compile the blog entry
        pandoc "./blog/${texname}" -f latex -t html -s -o "./blog/${htmlname}" --template './blog/template.html' --metadata title="${blogname}" --metadata date="${blogdate}" --metadata author="${blogauthor}" --mathjax
        echo "\href{./$htmlname}{$blogname [$blogdate]} \\\\ " >> ./blog/linkstoblogs.tex
        echo "Blog '$blogname' added to index"
    done

    ## Build the blog index
    pandoc ./blog/main.tex -f latex+latex_macros -t html5 -s -o ./blog/index.html --template './blog/template.html' --metadata title='Blog ⊂ jellel.me'

    # Done :D
    echo "Building finished succesfully!"
}
build