#!/usr/bin/env python
#
#  raspiLapseCam.py
#
#  Created by James Moore on 28/07/2013.
#  Copyright (c) 2013 Fotosyn. All rights reserved.
#
#  Raspberry Pi is a trademark of the Raspberry Pi Foundation.

#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are met:

#  1. Redistributions of source code must retain the above copyright notice, this
#  list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright notice,
#  this list of conditions and the following disclaimer in the documentation
#  and/or other materials provided with the distribution.>

#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
#  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
#  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
#  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
#  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
#  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
#  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
#  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#  The views and conclusions contained in the software and documentation are those
#  of the authors and should not be interpreted as representing official policies,
#  either expressed or implied, of the FreeBSD Project.

# This script sets up and runs a Python Script which, at intervals invokes a capture
# command to the Raspberry Pi camera, and stores those files locally in a dynamically
# named folder.

# To invoke, copy this script to an easy to find file location on your Raspberry Pi
# (eg. /home/pi/), log into your Raspberry Pi via terminal and type:
#
# sudo python /your/file/location/raspiLapseCam.py (add &) if you wish to run as a
# background task. A process ID will be shown which can be ended with

# sudo kill XXXX (XXXX = process number)

# Based on your settings the application will no begin capturing images
# saving them to your chose file location (same as current location of this file as default.

# Import some frameworks
import os
import time
import RPi.GPIO as GPIO
from datetime import datetime

# Grab the current datetime which will be used to generate dynamic folder names
d = datetime.now()
initYear = "%04d" % (d.year)
initMonth = "%02d" % (d.month)
initDate = "%02d" % (d.day)
initHour = "%02d" % (d.hour)
initMins = "%02d" % (d.minute)

# Define the location where you wish to save files. Set to HOME as default.
# If you run a local web server on Apache you could set this to /var/www/ to make them
# accessible via web browser.
folderToSave = "timelapse_" + str(initYear) + str(initMonth) + str(initDate) + str(initHour) + str(initMins)
os.mkdir(folderToSave)

# Set the initial serial for saved images to 1
fileSerial = 1

# Run a WHILE Loop of infinitely
while True:

    d = datetime.now()
    if d.hour > 2:

        # Set FileSerialNumber to 000X using four digits
        fileSerialNumber = "%04d" % (fileSerial)

        # Capture the CURRENT time (not start time as set above) to insert into each capture image filename
        hour = "%02d" % (d.hour)
        mins = "%02d" % (d.minute)

        # Define the size of the image you wish to capture.
        imgWidth = 800 # Max = 2592
        imgHeight = 600 # Max = 1944
        print " ====================================== Saving file at " + hour + ":" + mins

        # Capture the image using raspistill. Set to capture with added sharpening, auto white balance and average metering mode
        # Change these settings where you see fit and to suit the conditions you are using the camera in
        os.system("raspistill -w " + str(imgWidth) + " -h " + str(imgHeight) + " -o " + str(folderToSave) + "/" + str(fileSerialNumber) + "_" + str(hour) + str(mins) +  ".jpg  -sh 40 -awb auto -mm average -v")

        # Increment the fileSerial
        fileSerial += 1

        # Wait 60 seconds (1 minute) before next capture
        time.sleep(60)

    else:

        # Just trapping out the WHILE Statement
        print " ====================================== Doing nothing at this time"