Rescuing historical YouTube Trends data. Version: 1.6.0.1

YouTube_Trends_Archiver.v1.6.0.1.bash

# YouTube Trends Archiver – Automatically saves YouTube trends into the Wayback Machine 
# URL format: https://www.youtube.com/feed/trending?hl=EN&gl=[language initials in capital letters, e.g. “DE”]
# Feel free to leave suggestions in the comments.

# Start newest version automatically: . ./"$(ls YouTube_Trends_Archive*.*sh -1 -t |head -n 1)"

Version="1.6.0.1" # Features such as the ability to change without restarting the script will be added.
dbglog="YTtrendsArchiver.dbg.log" # Name of Debug Log file.
echo "Version:	$Version"
function timestamp 	{ date "+%Y%m%d%H%M%S" ;}
function timestamp_timehighlight { printf "$(timestamp | sed -r s/"^([0-9]{8})(([0-9]{6}))$"/"\1$(highlighttext "\\\2")"/g )" ;}
function highlighttext { printf "\e[7m\e[1m""$@""\e[27m\e[21m" ;}
function pgtitle 	{ curl -s "$@" | grep -ioe "<title>.*</title>" | sed -r "s#</?title>##g" ;}
function acv 		{ wget -a wget.dbg -O "/dev/null"	  "http://web.archive.org/record/$@"   ;} # Android Terminal only supports “curl” , but this runs on desktop Linux terminal.
function debuglog() { echo -e "$(timestamp) YouTube Trends Archiver: Debug log:	Version:$Version	Information:" "$@" >>"$dbglog" ;}
function debuglog_verbose() { echo -e "$(timestamp_timehighlight) YouTube Trends Archiver: Debug log (verbose):	Version:$Version	Information:" "$@" |tee -a "$dbglog" ;}
function acv_interval_printf { printf "\e[7m";if [ -n "$acv_interval" ];then printf "$acv_interval";else printf $acv_interval_default;fi;printf "\e[27m" ;}
acv_interval_default="6h" # Default value. # deprecated.
if [ -f "./.YTTA.cfg.sh" ];then . "./.YTTA.cfg.sh";fi # Placeholder.
# Log file backups:
	cp -n $dbglog "$dbglog.version$(timestamp)"
	cp -n wget.dbg "wget.$(timestamp).dbg"


debuglog "Initiated." "Asking for archival interval. Default: $acv_interval_default. "
if [ -z "$1" ];then
	read -p "Set YouTube Trends archival interval:	" acv_interval
	debuglog_verbose "Archival interval set to: $acv_interval"
else
	acv_interval="$1"
	debuglog_verbose "Archival interval set to: $(highlighttext $acv_interval) using transcluded \$1 argument."
fi
#######################################################################
debuglog_verbose "YouTube Trends archival initiated. Interval: $(acv_interval_printf)	Interval variable: $acv_interval. Default: $acv_interval_default."
while :; do
debuglog_verbose "YouTube Trends archival: loop \e[33mstarted.\e[0m Interval set to: $(acv_interval_printf)." # Colours added for easier oversight.
acv "https://www.youtube.com/feed/trending?hl=EN&gl="
acv "https://www.youtube.com/feed/trending?hl=EN&gl=EN"
acv "https://www.youtube.com/feed/trending?hl=EN&gl=DE"
debuglog_verbose "YouTube Trends archival \e[32mfinished.\e[0m Next archival in: $(acv_interval_printf)."
sleep "${acv_interval:-"$acv_interval_default"}" # Android Terminal does only support plain integer numbers for the “sleep” command, no “s” “m” “h” “d” or digits behind decimal, such as “0.9” or “.1m”.
debuglog_verbose "Interval timer finished. Restarting loop."
echo -e "––––––––––" >> $dbglog
done 

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