#!/usr/bin/env python3
import os.path, sys
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))

import numpy as np
import argparse
import datetime

from opensfm import video


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Parse gpx file and exctact video frames.')
    parser.add_argument('--gpx', help='path to the gpx file')
    parser.add_argument('--video', help='path to the video file')
    parser.add_argument('--output', help='path to the image output folder', default='.')
    parser.add_argument('--dx', help='distance between key frames (in meters)', default=5)
    parser.add_argument('--dt', help='time offset between key frames (in seconds)')
    parser.add_argument('--start_time',
        help='time of the first frame of the video (in ISO8601 format, example {0})'.format(
            datetime.datetime.now().isoformat()))
    args = parser.parse_args()

    dx = float(args.dx)
    dt = args.dt
    if dt is not None: dt = float(dt)
    video_file = args.video
    output_path = args.output
    start_time = args.start_time
    gpx_file = args.gpx

    video.import_video_with_gpx(video_file, gpx_file, output_path, dx, dt, start_time)