#!/usr/bin/env bash
set -euo pipefail

: "${PLAYER_ORIGIN:?Set PLAYER_ORIGIN before running this test}"

base_url=${HLS_BASE_URL:-http://127.0.0.1:8124}
media_path=${TEST_MEDIA_PATH:-aa/1170193193-1-192.mp4}
tmpdir=$(mktemp -d)
trap 'rm -rf "$tmpdir"' EXIT

resolve_url() {
    local base=$1
    local reference=$2

    case "$reference" in
        http://*|https://*) printf '%s\n' "$reference" ;;
        /*) printf '%s%s\n' "$(printf '%s\n' "$base" | sed -E 's#(https?://[^/]+).*#\1#')" "$reference" ;;
        *) printf '%s/%s\n' "${base%/*}" "$reference" ;;
    esac
}

master_url="${base_url%/}/hls/${media_path}/master.m3u8"
master_headers="$tmpdir/master.headers"
master_playlist="$tmpdir/master.m3u8"

curl --fail --silent --show-error --dump-header "$master_headers" --output "$master_playlist" "$master_url"
tr -d '\r' < "$master_headers" | grep -Fxi "Access-Control-Allow-Origin: $PLAYER_ORIGIN" >/dev/null
tr -d '\r' < "$master_headers" | grep -Fxi 'Cache-Control: no-store' >/dev/null
grep -Fqx '#EXTM3U' "$master_playlist" >/dev/null

child_reference=$(awk 'found { print; exit } /^#EXT-X-STREAM-INF/ { found=1 }' "$master_playlist")
if [[ -z $child_reference ]]; then
    child_url=$master_url
else
    child_url=$(resolve_url "$master_url" "$child_reference")
fi

child_playlist="$tmpdir/index.m3u8"
curl --fail --silent --show-error --output "$child_playlist" "$child_url"
grep -Fqx '#EXTM3U' "$child_playlist" >/dev/null

segment_reference=$(awk '!/^#/ && NF { print; exit }' "$child_playlist")
if [[ -z $segment_reference ]]; then
    echo "No HLS segment was found in $child_url" >&2
    exit 1
fi

segment_url=$(resolve_url "$child_url" "$segment_reference")
curl --fail --silent --show-error --output /dev/null "$segment_url"

printf 'HLS smoke test passed: %s\n' "$master_url"