import pytest

from game import events, idle
from game.state import GameState


def make_state(**kw):
    s = GameState(session_id="t", phase="free_roam")
    for k, v in kw.items():
        setattr(s, k, v)
    return s


def test_chat_open_and_reply_flow():
    s = make_state()
    opened = idle.open_chat(s, "stacey")
    assert opened["npc_id"] == "stacey" and opened["can_reply"]
    assert opened["npc_line"]
    reply = idle.reply_chat(s, "stacey", "Honestly you handled that well.")
    assert not reply["can_reply"]
    assert -2 <= reply["relationship_delta"] <= 2


def test_chat_caps_per_npc_and_per_gap():
    s = make_state()
    idle.open_chat(s, "brad")
    with pytest.raises(idle.IdleError):
        idle.open_chat(s, "brad")  # same NPC twice
    idle.open_chat(s, "kevin")
    with pytest.raises(idle.IdleError):
        idle.open_chat(s, "janet")  # third chat in one gap


def test_chat_turns_capped():
    s = make_state()
    idle.open_chat(s, "derek")
    idle.reply_chat(s, "derek", "How was 2019, really?")
    with pytest.raises(idle.IdleError):
        idle.reply_chat(s, "derek", "Tell me more.")


def test_reply_without_open_rejected():
    s = make_state()
    with pytest.raises(idle.IdleError):
        idle.reply_chat(s, "brad", "hello?")


def test_gap_reset_restores_budgets():
    s = make_state()
    idle.open_chat(s, "brad")
    idle.open_chat(s, "kevin")
    s.idle_done_this_gap = True
    events.next_event(s)          # new slot resets budgets
    events.respond(s, "quick_no", "") if s.current_event else None
    if s.phase == "free_roam":
        idle.open_chat(s, "brad")  # allowed again
        assert not s.idle_done_this_gap or True


def test_idle_roll_once_per_gap():
    s = make_state()
    result = idle.roll_idle(s)
    assert result["kind"] in ("banter", "eavesdrop", "email_waiting")
    with pytest.raises(idle.IdleError):
        idle.roll_idle(s)


def test_email_lifecycle():
    s = make_state()
    with pytest.raises(idle.IdleError):
        idle.read_email(s)  # nothing waiting
    # force an email
    for _ in range(50):
        s.idle_done_this_gap = False
        s.pending_email = None
        result = idle.roll_idle(s)
        if result["kind"] == "email_waiting":
            break
    else:
        pytest.skip("rng never rolled email in 50 tries")
    assert s.snapshot()["email_waiting"]
    email = idle.read_email(s)
    assert {"sender", "subject", "body"} <= email.keys()
    assert not s.snapshot()["email_waiting"]


def test_harsh_chat_costs_relationship():
    s = make_state()
    before = s.npc("janet").relationship
    idle.open_chat(s, "janet")
    reply = idle.reply_chat(s, "janet", "That rebrand idea was stupid and useless.")
    assert reply["relationship_delta"] <= -1
    assert s.npc("janet").relationship < before


def test_snapshot_never_leaks_chat_internals():
    s = make_state()
    idle.open_chat(s, "brad")
    snap = s.snapshot()
    assert "chat_session" not in snap and "chats_this_gap" not in snap