#!/usr/bin/env python
import argparse
import datetime
import os
import sys
import time

from galaxy.selenium import cli

DESCRIPTION = "Walk a Galaxy tour and dump screenshots."


def main(argv=None):
    if argv is None:
        argv = sys.argv[1:]

    args = _arg_parser().parse_args(argv)
    driver_wrapper = cli.DriverWrapper(args)
    output = args.output
    assert output is not None
    output = output.replace("TIMESTAMP", datetime.datetime.now().strftime("%Y%m%d%H%M%s"))
    if os.path.exists(output):
        raise Exception("Output directory %s exists, skipping")
    else:
        os.makedirs(output)
    callback = DumpTourCallback(driver_wrapper, output)
    driver_wrapper.run_tour(args.tour, tour_callback=callback)


class DumpTourCallback:
    driver_wrapper: cli.DriverWrapper

    def __init__(self, driver_wrapper, output):
        self.driver_wrapper = driver_wrapper
        self.output = output

    def handle_step(self, step, step_index: int):
        time.sleep(0.5)
        self.driver_wrapper.save_screenshot(f"{self.output}/{step_index}.png")
        time.sleep(0.5)


def _arg_parser():
    parser = argparse.ArgumentParser(description=DESCRIPTION)
    parser.add_argument("tour", metavar="TOUR", help="tour to walk")
    parser.add_argument("-o", "--output", default="tour_dump_TIMESTAMP", help="directory to dump tour to")
    parser = cli.add_selenium_arguments(parser)
    return parser


if __name__ == "__main__":
    main()
