#!/bin/bash

# .env contains a line like
# BASE64_BEARER_TOKEN='<literal base64 encoded string>'
source .env
OUTFILE_PATTERN="./videos/video_INDEX.mp4"
API_URL='https://euwe-1.api.microsoftstream.com/api/videos?'\
'$top=100&'\
'$skip=0&'\
'$orderby=metrics/trendingScore desc&'\
'$filter=published and ((state eq %27Completed%27 and contentSource ne %27livestream%27) or (contentSource eq %27livestream%27 and not (state eq %27Completed%27 and not liveEvent/LiveEventOptions/OnDemandOptions/EnablePlayback)))&'\
'api-version=1.4-private'

mkdir -p "$(dirname "${OUTFILE_PATTERN}")" || { echo -e '\033[31mAborting\033[m'; exit; }
m3u8_manifest_urls=$(wget --no-verbose --quiet -O- --header="authorization: Bearer ${BASE64_BEARER_TOKEN}" "${API_URL}" | jq -r '.value[].playbackUrls | map(select(.mimeType == "application/vnd.apple.mpegurl")) | .[].playbackUrl')

idx=1
total=$(echo "${m3u8_manifest_urls}" | wc -l)
echo "${m3u8_manifest_urls}" | while IFS= read -r m3u8_manifest_url; do

m3u8_highest_res_url=$(curl -s "${m3u8_manifest_url}" | tail -n1 | rev | cut -c3- | rev | cut -d'&' -f2 | cut -c13- | sed 's/keyframes/fragments/g')

echo -e "\033[32mDownload video ${idx} of ${total}\033[m"

outfile="$(echo "${OUTFILE_PATTERN}" | sed "s/idx/${idx}/g")"

# This doesn't work for some reason
# ffmpeg -loglevel 24 -headers "authorization: Bearer ${BASE64_BEARER_TOKEN}" -i "${m3u8_highest_res_url}" -c copy "${outfile}"
# Don't know what the f is going on, but it only works this hacky way
echo 'ffmpeg -loglevel 24 -headers "authorization: Bearer '${BASE64_BEARER_TOKEN}'" -i "'${m3u8_highest_res_url}'" -c copy "'${outfile}'"' | sh
echo -e "\033[33mDone\033[m"

idx=$((idx+1))

done