#!/usr/bin/env python3
"""What a player holds on the cursor when they die, on a dedicated server, against vanilla's, seen by a vanilla client.

A vanilla dedicated server and Horizon's (`horizon-client --dedicated --nogui`) each serve a copy of one flat world
vanilla generated first, with Alice an operator in survival and keep_inventory off. LocatorBarClient (a player made
of vanilla's protocol code) is given seven diamonds, picks them up onto its inventory menu's cursor (a PICKUP click)
ten blocks from the spawn, runs /kill on itself, waits on the death screen and respawns (PERFORM_RESPAWN). Twenty
ticks after dying vanilla removes the dead player (LivingEntity.tickDeath), and Player.remove's
inventoryMenu.removed drops the cursor's stack where it died. Alice then asks whether an item lies around the death
site; the reply, and the inventory slots, respawns and teleports she is sent from the death on, are compared
exactly.
"""
import sys

try:
    from . import test_locator_bar_parity as locator
except ImportError:
    import test_locator_bar_parity as locator

NAME = 'cursor-death-parity'
# server_dir and generate_world write these server.properties.
locator.PROPERTIES = dict(locator.PROPERTIES, gamemode='survival')
SCRIPT = [
    ('setup', ['cmd Alice gamerule keep_inventory false', 'cmd Alice clear @s',
               'cmd Alice give @s minecraft:diamond 7', 'cmd Alice tp @s 10.5 -60 0.5']),
    # Hotbar slot 0 is the inventory menu's slot 36.
    ('pickup', ['pickup Alice 36']),
    ('death', ['cmd Alice kill @s']),
    ('respawn', ['respawn Alice']),
    ('check', ['chat on', 'cmd Alice execute if entity @e[type=minecraft:item,x=10.5,y=-60,z=0.5,distance=..4]']),
]


def shown(lines):
    """Alice's slots, respawns, teleports and chat from the death on."""
    return [line for line in lines if len(parts := line.split(' ', 3)) >= 3
            and parts[1] in ('step=death', 'step=respawn', 'step=check')
            and parts[2] in ('slot', 'inventory', 'respawn', 'teleport', 'chat')]


def check(vanilla, _):
    if not any(l.startswith('Alice step=check chat') for l in vanilla):
        return 'vanilla answered no check command'
    return None


def main():
    lines = locator.one_player(NAME, SCRIPT, shown, check, 'A player dying with a stack on the inventory menu cursor '
                               '(keep_inventory off) and respawning on a dedicated server: the stack is dropped '
                               'where it died, not kept.')
    print(f'cursor death: {len(lines)} lines identical')


if __name__ == '__main__':
    try:
        main()
    except AssertionError as error:
        sys.exit(f'{NAME}: {error}')