#!/usr/bin/env bash
# render html as markdown and display in glow, supports syntax highlighting
# requires: html2text, glow or bat
# author: CEUK

fpath=$(mktemp --suffix=-mail-render.html)

#shellcheck disable=SC2064 # we want to expand it instantly
trap "rm -f -- ${fpath@Q}" EXIT

perl -0777pe 's/(<code class="sourceCode\s?)(\w+?)(">)(.*?)(<\/code>)/\1\2\3\n```\2\n\4\n```\n\5/gs' "$1" | html2text | sed -re 's/^\s+(```(\w+)?)/\1/gm' -e 's/\x1b\[[6-9;]*m//g' >"$fpath"

if command -v bat >/dev/null 2>&1; then
    bat "$fpath"
elif command -v glow >/dev/null 2>&1; then
    glow -s ~/.config/glow/email.json "$fpath"
else
    sed 's/\x1b\[[6-9;]*m//g' <"$fpath"
fi