run_timelapse

#!/bin/bash
# Timelapse controller for Raspberry Pi

# directory containing this script: https://stackoverflow.com/a/246128/1404966
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

IMAGEDIR="images"
DELAY=54
ISUPLOAD=0
# Note: The total time interval between images is 
# approximately $DELAY+5 seconds, since the camera module 
# takes approximately 5 seconds to calibrate i
while getopts "i:d:u:" OPTION
do
     case $OPTION in
         i)
             IMAGEDIR=$OPTARG
             ;;
         d)
             DELAY=$OPTARG
             ;;
         u)
             ISUPLOAD=$OPTARG
             ;;	
     esac
done

DROPBOX_UPLOADER_SCRIPT="$DIR/Dropbox-Uploader/dropbox_uploader.sh"

mkdir -p "$DIR/$IMAGEDIR"
## TODO (vtjeng): This is necessary to do the first time. Perhaps the script's mkdir has a -p flag?
# "$DROPBOX_UPLOADER_SCRIPT" mkdir "$IMAGEDIR"

# As of 13 Dec 2013,
# -sh, -co, -sa range from -100 to 100. Default at 0
# -br ranges from 0 to 100. Default at 50
# -ev officially ranges from -10 to 10 with a default at 0. However when you push to -20 you still see results.
# options for -ex: auto, night, nightpreview, backlight, spotlight, sports, snow, beach, verylong, fixedfps, antishake, fireworks
# options for -awb: off, auto, sun, cloudshade, tungsten, fluorescent, incandescent, flash, horizon

while true;
do
	FILENAME=$(date +"%Y%m%d_%H%M-%S").jpg
    OUTPUT_PATH="$DIR/$IMAGEDIR/$FILENAME"
    raspistill --metering matrix --nopreview --output "$OUTPUT_PATH"

    if [[ $ISUPLOAD == 1 ]]; then
        # TODO (vtjeng): make this a proper flag
		"$DROPBOX_UPLOADER_SCRIPT" upload "$OUTPUT_PATH" "$IMAGEDIR"
	fi

	sleep "$DELAY"
done