#!/bin/bash

# Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0

set -xeo pipefail

# Check if pre-warming task is initiated, and exit in case it is.
if [ ${TASK_TYPE} == "PRE_WARM" ]
then
  echo "Pre-warming task initiated"
  sleep 0.5
  exit 0
fi

MEETING_WEBPAGE='file:///recording-app/src/index.html'
BROWSER_URL="${MEETING_WEBPAGE}?chimeMeetingData=${CHIME_MEETING_DATA}&chimeAttendeeData=${CHIME_ATTENDEE_DATA}"

SCREEN_WIDTH=${RECORDING_SCREEN_WIDTH:-'1280'}
SCREEN_HEIGHT=${RECORDING_SCREEN_HEIGHT:-'720'}
SCREEN_RESOLUTION=${SCREEN_WIDTH}x${SCREEN_HEIGHT}
COLOR_DEPTH=24
X_SERVER_NUM=1
S3_BUCKET_NAME=${RECORDING_BUCKET_NAME}
RECORDING_FILE_NAME=${RECORDING_FILE_NAME}

# Start PulseAudio server so Firefox will have somewhere to which to send audio
pulseaudio -D --exit-idle-time=-1
pacmd load-module module-virtual-sink sink_name=v1  # Load a virtual sink as `v1`
pacmd set-default-sink v1  # Set the `v1` as the default sink device
pacmd set-default-source v1.monitor  # Set the monitor of the v1 sink to be the default source

# Start X11 virtual framebuffer so Firefox will have somewhere to draw
Xvfb :${X_SERVER_NUM} -ac -screen 0 ${SCREEN_RESOLUTION}x${COLOR_DEPTH} > /dev/null 2>&1 &
export DISPLAY=:${X_SERVER_NUM}.0
sleep 0.5  # Ensure this has started before moving on

# Create a new Firefox profile for capturing preferences for this
firefox --no-remote --new-instance --createprofile "foo4 /tmp/foo4"

# Set the Firefox preferences to enable automatic media playing with no user
# interaction and the use of the OpenH264 plugin.
# media.setsinkid.enabled is recommended for firefox: https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/setSinkId

cat <<EOF >> /tmp/foo4/prefs.js
user_pref("media.autoplay.default", 0);
user_pref("media.autoplay.enabled.user-gestures-needed", false);
user_pref("media.navigator.permission.disabled", true);
user_pref("media.gmp-gmpopenh264.abi", "x86_64-gcc3");
user_pref("media.gmp-gmpopenh264.lastUpdate", 1571534329);
user_pref("media.gmp-gmpopenh264.version", "1.8.1.1");
user_pref("doh-rollout.doorhanger-shown", true);
user_pref("media.setsinkid.enabled", true);
EOF

# Start Firefox browser and point it at the URL we want to capture
#
# NB: The `--width` and `--height` arguments have to be very early in the
# argument list or else only a white screen will result in the capture for some reason.

firefox \
  -P foo4 \
  --width ${SCREEN_WIDTH} \
  --height ${SCREEN_HEIGHT} \
  --new-instance \
  --first-startup \
  --foreground \
  --kiosk \
  --ssb ${BROWSER_URL} \
  &
sleep 0.5  # Ensure this has started before moving on
xdotool mousemove 1 1 click 1  # Move mouse out of the way so it doesn't trigger the "pause" overlay on the video tile

exec node /recording-task/record.js ${S3_BUCKET_NAME} ${RECORDING_FILE_NAME} ${SCREEN_WIDTH} ${SCREEN_HEIGHT}