handler

#!/bin/bash
# requires:
# https://github.com/OmarCastro/rofi-blocks
# jq (https://github.com/stedolan/jq)
#	
## realtime suggestions for rofi
## Author: https://github.com/BelkaDev

############# SETTINGS
refreshrate=2 # refresh suggestions every n characters hit 
ddg_api=$(dirname $0)/APIs/ddg # path to ddg API script
baidu_api=$(dirname $0)/APIs/baidu # path to baidu API script
lastfm_api=$(dirname $0)/APIs/lastfm # path to lastfm API script
deezer_api=$(dirname $0)/APIs/deezer # path to deezer API script
google_api=$(dirname $0)/APIs/google # path to google API script
amazon_api=$(dirname $0)/APIs/amazon # path to amazon API script
youtube_api=$(dirname $0)/APIs/youtube # path to youtube API script
archwiki_api=$(dirname $0)/APIs/archwiki # path to archwiki API script
wikipedia_api=$(dirname $0)/APIs/wikipedia # path to wikipedia API script
googlebooks_api=$(dirname $0)/APIs/googlebooks # path to googlebooks API script
##################################################


logfile="$(dirname $0)/logfile.tmp"
[ ! -f "$logfile" ] && echo "run the wrapper script instead" && exit 1
API=$(cat $logfile)
rm "$logfile"
case "$API" in 
"ddg") search="$ddg_api" ; allowExcess=true ;; 
"deezer") search="$deezer_api" ;;
"youtube") search="$youtube_api" ; allowExcess=true ;;
"google") search="$google_api" ; allowExcess=true ;;
"books") search="$googlebooks_api" ;;
"lastfm") search="$lastfm_api" ;;
"wikipedia") search="$wikipedia_api" allowExcess=true ;;
"amazon") search="$amazon_api"  ; allowExcess=true ;;
"archwiki") search="$archwiki_api"  ; allowExcess=true ;;
"baidu") search="$baidu_api"  ; allowExcess=true ;;
*) echo "unrecognized api" && exit 1 ;; # unreachable
esac

suggestions=""
default_custom_format="{{name_enum}}:{{value}}"
custom_format="${format:-$default_custom_format}"

urlencode() {
echo ${1// /"%20"}
}

convertJson(){
	echo "$1" | sed -e 's/\\/\\\\/g' -e 's/\"/\\"/g' -e 's/.*/"&"/' | paste -sd "," -
}

removeIllegal(){
##### https://github.com/fogine/rofi-blocks/commit/9f45da637baf0f0d342c2e2957535564aa622164
##### if you care about special characters, the patch above
##### fixes the issue in which they break rofi
##### once installed you can omit this function 
echo "$1" | tr -dc '[:alnum:][:space:]-\n\r'
}

fill_menu(){

	JSON_LINES="$(convertJson "$suggestions")"

 	TEXT=$(cat <<EOF | tr -d "\n" | tr -d "\t"  
{
	"event format":"${custom_format}",
	"lines":[ 
	${JSON_LINES}
	]
}
EOF
)
	printf '%s\n' "$TEXT"
}

echo '{"input action":"send"}'

unset length i
while IFS= read -r line; do
((i++))
[[ "$line" = 'SELECT'* ]] && selected=$(echo "$line" | cut -d':' -f2-) && break;
print=$(echo "$line" | cut -d':' -f2-)
#custom algorithm to reduce Api calls
[[ "${#print}" < $length ]] && length="${#print}" && continue;
length="${#print}"
if (( i%refreshrate == 0 )) || [ ! -z $allowExcess ]; then suggestions="$(removeIllegal "$(bash $search $print)")"

[[ "${line:0:1}" != '{' ]] && suggestions="${print}"$'\n'"$suggestions"
fill_menu "$print"
fi
done
selected="$(tr '[:lower:]' '[:upper:]' <<< ${selected:0:1})${selected:1}"
[ -z "$selected" ] && rm $logfile || printf "$selected" >"$logfile"
exit 0