#!/usr/bin/env bash

# https://github.com/anufrievroman/Neomutt-File-Picker/blob/master/filepicker
# https://github.com/neomutt/neomutt/issues/3229
# https://unix.stackexchange.com/questions/612134/neomutt-run-command-to-attach-file-on-macro-key-press/612194#612194

commandsFile="/tmp/neomutt-commands"
markdownFile="/tmp/neomutt-markdown"
htmlFile="/tmp/neomutt.html"

cat - > "${markdownFile}.orig"
echo -n "push " > "$commandsFile"

cp "${markdownFile}.orig" "$markdownFile" 

grep -Eo '!\[[^]]*\]\([^)]+' "$markdownFile" | cut -d '(' -f 2 |
	grep -Ev '^(cid:|https?://)' | while read file; do
		id="cid:$(md5sum "$file" | cut -d ' ' -f 1 )"
		sed -i "s#$file#$id#g" "$markdownFile"
	done

if [ "$(grep -Eo '!\[[^]]*\]\([^)]+' "$markdownFile" | cut -d '(' -f 2  | grep '^cid:' | wc -l)" -gt 0 ]; then
	echo -n "<attach-file>\"$markdownFile\"<enter><toggle-disposition><toggle-unlink><first-entry><detach-file>" >> "$commandsFile"
fi


pandoc -f markdown -t html5 --standalone --template ~/.pandoc/templates/email.html "$markdownFile" > "$htmlFile"

# Attach the html file
echo -n "<attach-file>\"$htmlFile\"<enter>" >> "$commandsFile"

# Set it as inline
echo -n "<toggle-disposition>" >> "$commandsFile"

# Tell neomutt to delete it after sending
echo -n "<toggle-unlink>" >> "$commandsFile"

# Select both the html and markdown files
echo -n "<tag-entry><previous-entry><tag-entry>" >> "$commandsFile"

# Group the selected messages as alternatives
echo -n "<group-alternatives>" >> "$commandsFile"



grep -Eo '!\[[^]]*\]\([^)]+' "${markdownFile}.orig" | cut -d '(' -f 2 |
	grep -Ev '^(cid:|https?://)' | while read file; do
	id="$(md5sum "$file" | cut -d ' ' -f 1 )"
	echo -n "<attach-file>\"$file\"<enter>" >> "$commandsFile"
	echo -n "<toggle-disposition>" >> "$commandsFile"
	echo -n "<edit-content-id>^u\"$id\"<enter>" >> "$commandsFile"
	echo -n "<tag-entry>" >> "$commandsFile"
done


if [ "$(grep -Eo '!\[[^]]*\]\([^)]+' "$markdownFile" | cut -d '(' -f 2 | grep '^cid:' |
	wc -l)" -gt 0 ]; then
	echo -n "<first-entry><tag-entry><group-related>" >> "$commandsFile"
fi