set -eu

fetch() (

##

# The movie/show details page has a link like the following that starts the

# player:

START=${1} # http://olevod.com/index.php/vod/play/id/62435/sid/1/nid/1.html

TITLE=${2}

END=${1%.html}

END=$(printf "%02d" "${END##*/}") #number of the episode/movie/etc.

mkdir "${END}"

cd "${END}"

##

# That fetches an m3u file, which can be fetched from that file.

STAGE1=$(mktemp)

wget --no-check-certificate "${START}" -O "${STAGE1}"

##

# STAGE1 now contains the page source, inside that is an m3u8 link to the

# playlist.

echo "content placed in STAGE1: ${STAGE1}" >&1

STANZA=$(grep -Eo '"url":"https:.*master.m3u8"' "${STAGE1}")

PLAYLIST=$(jq -r .url <<< "{${STANZA}}")

STAGE2=$(mktemp)

echo "fetching stage 2 (first playlist) STAGE2: ${STAGE2}"

wget --no-check-certificate "${PLAYLIST}" -O "${STAGE2}"

##

# STAGE2 (the first m3u file) now contains a relative link to the real

# playlist.

# Create a new link from the file in there and the current path.

echo "constructing path to playlist..."

REL_PATH_TO_PLAYLIST=$(grep -o '.*m3u8$' "${STAGE2}" | cut -f2 -d")

BASE=${PLAYLIST%/*}

echo "base: ${BASE}"

FULL_PATH="${BASE}/${REL_PATH_TO_PLAYLIST}"

STAGE3=$(mktemp)

echo "Fetching first playlist from ${FULL_PATH} and placing it in ${STAGE3}"

wget --no-check-certificate "${FULL_PATH}" -O "${STAGE3}"

##

# Stage 3 now contains the real playlist full of relative links.

# Build a new link for each entry in the file.

while read -r REL ; do

wget --no-check-certificate "${BASE}/$REL"

done < <(grep -Eo '.*ts$' "${STAGE3}")

##

# Now they're fetched, combine them into one ts file with ffmpeg.

#

find . -type f -name '*.ts' | cut -f2 -d- | grep -v '[A-Za-z]' | sort -h | xargs --replace=REP echo file 'seg-REP-v1-a1.ts' > inputs

ffmpeg -f concat -i inputs -c copy output.ts

ffmpeg -i output.ts -acodec copy -vcodec copy output.mp4

mv output.mp4 ../"${TITLE}${END}.mp4"

rm output.ts

)

STEM=${1%/*}

START=${1##*/}

START=${START%.html}

STOP=${4:-999}

for ((i=START;i<STOP;i++)); do

if fetch "${STEM}/${i}.html" "${2}" ; then

echo "Fetched $i…" >&2

else

echo "No $i, ${2} possibly done." >&2

break

##

# FIXME: need error handling to resume on hiccups.

fi

done