"""Simulate a real play session: posts real pygame events through Game.event,
drives keys, renders every frame. Headless. Usage: python runtest.py [frames]"""

import os
import sys
import random

os.environ.setdefault("SDL_VIDEODRIVER", "dummy")
os.environ.setdefault("SDL_AUDIODRIVER", "dummy")

import pygame  # noqa: E402
from game import Game  # noqa: E402

pygame.init()
pygame.display.init()
KEYS = [pygame.K_LEFT, pygame.K_RIGHT, pygame.K_SPACE,
        pygame.K_UP, pygame.K_z, pygame.K_j, pygame.K_SLASH]


def main():
    frames = int(sys.argv[1]) if len(sys.argv) > 1 else 900
    rng = random.Random(11)
    g = Game()
    # press Enter on the title
    pygame.event.post(pygame.event.Event(pygame.KEYDOWN, key=pygame.K_RETURN))
    clock = pygame.time.Clock()
    held = set()
    start = pygame.time.get_ticks()
    for i in range(frames):
        # occasionally press/release flipper & launch keys for real
        if rng.random() < 0.2:
            k = rng.choice(KEYS)
            if k in held:
                held.discard(k)
                pygame.event.post(pygame.event.Event(pygame.KEYUP, key=k))
            else:
                held.add(k)
                pygame.event.post(pygame.event.Event(pygame.KEYDOWN, key=k))
        if i % 700 == 350:
            pygame.event.post(pygame.event.Event(pygame.KEYDOWN, key=pygame.K_p))  # pause test
        if i % 700 == 520:
            pygame.event.post(pygame.event.Event(pygame.KEYDOWN, key=pygame.K_p))
        for ev in pygame.event.get():
            if not g.event(ev):
                print("quit requested")
                pygame.quit()
                return 0
        g.set_keys()
        g.update()
        g.render()
        clock.tick(240)
    dt = (pygame.time.get_ticks() - start) / 1000.0
    print("ran %d frames in %.1fs state=%s score=%d lives=%d" %
          (frames, dt, g.state, g.score, g.lives))
    # throw a couple of state transitions: force game over to check the screen
    g.lives = 1
    g.pending = "drain_pause"
    for _ in range(200):
        g.set_keys()
        g.update()
        g.render()
    print("after forced drain state=%s over_t=%s" % (g.state, g.pending))
    pygame.quit()
    return 0


if __name__ == "__main__":
    raise SystemExit(main())