#!/usr/bin/env python3
"""QA harness: inject scripted OS-level keyboard/mouse input at the running game.

This is the tool that proves whether OS input actually reaches the game. It uses
`Tools/input/input_emulation.py` to create a virtual input device directly on
`/dev/uinput`, so a focused game window receives the injected keys and mouse
movement as genuine hardware input — indistinguishable from a real keyboard.

Typical workflow
----------------
The game must already be running and focused (it will not be launched here; the
user brings up the window). Run this script from a separate terminal:

    python3 Tools/input/input_test.py --sequence move:2,look:3,jump:1,reset:1,pause:1

It prints a per-step timeline (seconds) to stdout, which you can compare against
the `GigLine IN:` rows in the game's `Saved/Logs`. If the game log shows
`MoveForward fired` / `Look fired` for the injected steps, OS input is reaching
the pawn and the remaining problem is not input delivery.

Usage
-----
    python3 Tools/input/input_test.py                       # default smoke sequence
    python3 Tools/input/input_test.py --sequence move:2,look:3,jump:1,reset:1,pause:1
    python3 Tools/input/input_test.py --device /dev/uinput  --name "GigLine QA Input"

Steps supported in `--sequence` (comma-separated, `name:count`):
    move    hold W forward (each unit = ~0.5 s)
    back    hold S
    strafe  hold D
    left    hold A
    look    nudge mouse right (rotate camera)
    jump    press Space
    reset   press R
    pause   press Escape
    click   left mouse click

Design
------
* The device is kept open for the whole run and destroyed on exit (context
  manager), so nothing persists after the harness quits.
* Each step logs an absolute timestamp so you can line it up with the game log
  wall-clock times (the game logs to `Saved/Logs/GigLine.log` with the same
  system clock).
* No third-party packages: only the Python standard library.
"""

import argparse
import logging
import sys
import time

from input_emulation import InputDevice, UInputError

# Duration of one "unit" for hold-based movement steps, in seconds.
MOVE_STEP_S = 0.5

# Handlers map step names to a callable(dev) that performs the key/mouse action.
def _move(dev):
    dev.hold("w", MOVE_STEP_S)


def _back(dev):
    dev.hold("s", MOVE_STEP_S)


def _strafe(dev):
    dev.hold("d", MOVE_STEP_S)


def _left(dev):
    dev.hold("a", MOVE_STEP_S)


def _look(dev):
    # nudge the mouse +240 px on X repeatedly so the camera has time to respond.
    for _ in range(6):
        dev.move(240, 0, delay=0.03)
    time.sleep(0.15)


def _jump(dev):
    dev.key("space", delay=0.05)


def _reset(dev):
    dev.key("r", delay=0.05)


def _pause(dev):
    dev.key("esc", delay=0.05)


def _click(dev):
    dev.bclick("left")


STEPS = {
    "move": _move, "back": _back, "strafe": _strafe, "left": _left,
    "look": _look, "jump": _jump, "reset": _reset, "pause": _pause,
    "click": _click,
}


def parse_sequence(text):
    """'move:2,look:1,jump:1' -> ordered list of (name, count)."""
    seq = []
    for item in (text or "").split(","):
        item = item.strip()
        if not item:
            continue
        if ":" in item:
            name, _, count = item.partition(":")
            count = int(count or "1")
        else:
            name, count = item, 1
        if name not in STEPS:
            raise ValueError(f"unknown step {name!r}; known: {sorted(STEPS)}")
        seq.append((name, count))
    if not seq:
        seq = [("move", 2), ("look", 1), ("jump", 1), ("reset", 1), ("pause", 1)]
    return seq


def run_sequence(dev, seq):
    t0 = time.time()
    for name, count in seq:
        for _ in range(count):
            stamp = time.time() - t0
            print(f"[{stamp:6.3f}s] -> {name}")
            # A brief settle so distinct keystrokes are logged separately.
            time.sleep(0.1)
            STEPS[name](dev)


def main(argv=None):
    ap = argparse.ArgumentParser(description=__doc__,
                                 formatter_class=argparse.RawDescriptionHelpFormatter)
    ap.add_argument("--sequence",
                    help="comma-separated steps and repeats, e.g. move:2,look:3")
    ap.add_argument("--device", default="/dev/uinput", help="uinput device path")
    ap.add_argument("--name", default="GigLine QA Input", help="virtual device name")
    ap.add_argument("-v", "--verbose", action="store_true",
                    help="log every injected event via logging")
    args = ap.parse_args(argv)

    if args.verbose:
        logging.basicConfig(level=logging.INFO,
                            format="%(asctime)s.%(msecs)03d %(name)s %(message)s",
                            datefmt="%H:%M:%S")
    try:
        seq = parse_sequence(args.sequence)
    except ValueError as exc:
        ap.error(str(exc))

    try:
        with InputDevice(name=args.name, path=args.device) as dev:
            print(f"# virtual device {args.name!r} active; send sequence now")
            print(f"# steps: {' '.join(f'{n}x{c}' for n, c in seq)}")
            run_sequence(dev, seq)
    except UInputError as exc:
        print(f"ERROR: {exc}", file=sys.stderr)
        return 1
    except KeyboardInterrupt:
        print("\n# interrupted; device destroyed on exit")
        return 130
    print("# done; inputs sent")
    return 0


if __name__ == "__main__":
    sys.exit(main())