fish shell script to download archived xray.fm shows

xraydl.fish

#! /usr/bin/fish

#==============
# This is a fish shell script to download archived mp3 files of shows
# from the radio station XRAY (krxy).
#==============

# get show numbers given show title (in url style)
# curl -s https://xray.fm/shows/home-of-space-paranoid | grep -Poe '(?<=title"\>\<a href="\/broadcasts\/)\d*?(?=")'

# get show mp3 given show number
# curl -s https://xray.fm/broadcasts/22520 | grep -Poe 'http.*mp3(?=")' | wget -i -

# "global" of shows i'm interested in
set shows "home-of-space-paranoid" "gothique-boutique"

# "global" of shownum file
set prevDLedShows "shownums.txt"

# read file of already downloaded shows
while read -la line
    set showNumsFile $showNumsFile $line
end < $prevDLedShows

# get the list of show numbers for each show name
for show in $shows
    set showNumsAll $showNumsAll (curl -s https://xray.fm/shows/$show | grep -Poe '(?<=title"\>\<a href="\/broadcasts\/)\d*?(?=")')
end

# filter out the shows that are already in the list of downloaded shows (build clean list)
for show in $showNumsAll
    if not contains $show $showNumsFile
        set showNums $showNums $show
    end
end

# get the url of the MP3 for each show
set n (count $showNums)
for show in $showNums
    set urls $urls (curl -s https://xray.fm/broadcasts/$show | grep -Poe 'http.*mp3(?=")')
end
# echo $urls (count $urls)

# download each show
if math (count $urls) > 0
    echo $urls | xargs wget
end

# append/add downloaded show numbers to file
if math $n > 0
    echo $showNums >> $prevDLedShows
    echo $n "downloaded:"
    for i in (seq $n)
        echo $showNums[$i]"," $urls[$i]
    end
else
    echo "no shows downloaded"
end