#!/bin/sh

#####################
# Name: yt-meta.sh
# Date: 2016-12-10
# Lisc: ISC
# Main: jadedctrl
# Desc: Fetches metadata about
#       a specific YT video.
#####################

# Usage: yt-meta.sh $video_id

optnum=0

for argument in $@
do
    if echo $argument | grep "^-" > /dev/null
    then
        charcount=$(echo "$argument" | echo "$(wc -c) - 1" | bc)
        while [ $charcount -gt 0 ]
        do
            character=$(echo "$argument" | head -c1)
            argument=$(echo "$argument" | sed 's/^.//')
            case $character in
                c)
                    options="$options c"
                    optnum=$((optnum+1)) ;;
                d) # duration
                    options="$options d"
                    optnum=$((optnum+1)) ;;
                D) # date
                    options="$options D"
                    optnum=$((optnum+1)) ;;
                v)
                    options="$options v"
                    optnum=$((optnum+1)) ;;
                t)
                    options="$options t"
                    optnum=$((optnum+1)) ;;
                i)
                    options="$options i"
                    optnum=$((optnum+1)) ;;
                -)  ;;
            esac
            charcount=$((charcount-1))
        done
    else
        preid="$argument"
    fi
done 


if echo "$preid" | grep "youtube.com" > /dev/null
then 
    id="$(echo $preid | sed 's/.*v=//')"
elif [ -z $preid ]
then
    echo "No video specified."
    exit 1
else
    id="$preid"
fi

if [ -e "./lib/yt-meta" ]
then
    alias yt-channel="./lib/yt-channel"
    alias yt-search="./lib/yt-down"
    alias yt-meta="./lib/yt-meta"
    alias yt-search="./lib/yt-search"
    alias yt-down="./lib/yt-channel"
    alias st-download="./lib/st-download"
    alias st-video="./lib/st-video"
fi


video_file="/tmp/$(mktemp -u yt-video_XXXXXX)"
if type "wget" &> /dev/null
then
    wget -q https://youtube.com/watch?v=$id -O $video_file
    wget -q https://youtube.com/results?search_query=$id -O $video_file.1
elif type "curl" &> /dev/null
then
    curl -s https://youtube.com/watch?v=$id -o $video_file
    curl -s https://youtube.com/results?search_query=$id -o $video_file.1
fi

# Now for displaying the metadata
title="$(grep "\"title\":\"" $video_file | sed 's/.*"title":"//' | sed 's/".*//')"
author="$(grep "\"author\":\"" $video_file | sed 's/.*"author":"//' | sed 's/".*//')"
views="$(grep "\"view_count\":\"" $video_file | sed 's/.*"view_count":"//' | sed 's/".*//')"
duration="$(grep "<a href=\"/watch?v=$1" $video_file.1 | sed 's/.*Duration: //' | sed 's/\..*//')"
date="$(grep "datePublished" $video_file | sed 's/.*"datePublished" content="//' | sed 's/".*//')"

if [ $optnum -eq 0 ]
then
    echo "$author | $views | $duration | $date | $id"
fi

for option in $options
do
    case $option in
        c) printf "$author" ;;
        t) printf "$title" ;;
        d) printf "$duration" ;;
        D) printf "$date" ;;
        v) printf "$views" ;;
        i) printf "$id" ;;
    esac
    if [ $optnum -ge 2 ]
    then
        printf " | "
        optnum=$((optnum-1))
    else
        printf "\n"
    fi
done