"""Shared fixtures for skywalker-mcp tests."""

from unittest.mock import MagicMock

import pytest

import skywalker_mcp.server as srv
from skywalker_mcp.server import DeviceBridge


class MockSkyWalker1:
    """Mock SkyWalker1 device that returns plausible data without USB hardware."""

    def __init__(self, verbose=False):
        self.verbose = verbose
        self._motor_halted = False
        self._armed = False
        self._lnb_on = True
        self._calls = []

    def _record(self, method, *args, **kwargs):
        self._calls.append((method, args, kwargs))

    def open(self):
        self._record("open")

    def close(self):
        self._record("close")

    def ensure_booted(self):
        self._record("ensure_booted")

    def get_fw_version(self):
        self._record("get_fw_version")
        return {"version": "3.05.0-test", "date": "2026-02-17", "raw": b"\x03\x05\x00"}

    def get_config(self):
        self._record("get_config")
        return 0x3F

    def get_usb_speed(self):
        self._record("get_usb_speed")
        return 2

    def get_serial_number(self):
        self._record("get_serial_number")
        return bytes([0xDE, 0xAD, 0xBE, 0xEF])

    def get_last_error(self):
        self._record("get_last_error")
        return 0x00

    def signal_monitor(self):
        self._record("signal_monitor")
        return {
            "snr_raw": 200, "snr_db": 8.5, "snr_pct": 42.5,
            "agc1": 1200, "agc2": 800, "power_db": -45.3,
            "locked": True, "lock": 0x1F, "status": 0x01,
        }

    def get_stream_diag(self, reset=False):
        self._record("get_stream_diag", reset=reset)
        return {"poll_count": 100, "overflow_count": 0, "sync_loss": 0, "armed": self._armed}

    def sweep_spectrum(self, start_mhz, stop_mhz, step_mhz=5.0, dwell_ms=15):
        self._record("sweep_spectrum", start_mhz, stop_mhz, step_mhz=step_mhz, dwell_ms=dwell_ms)
        n_points = int((stop_mhz - start_mhz) / step_mhz) + 1
        freqs = [start_mhz + i * step_mhz for i in range(n_points)]
        powers = []
        for f in freqs:
            base = -50.0
            if abs(f - 1420.0) < 5:
                base += 8.0 * (1.0 - abs(f - 1420.0) / 5.0)
            powers.append(base)
        raw = [(int((p + 60) * 100), 0) for p in powers]
        return freqs, powers, raw

    def tune_monitor(self, sr_sps, freq_khz, mod_idx, fec_idx, dwell_ms):
        self._record("tune_monitor", sr_sps, freq_khz, mod_idx, fec_idx, dwell_ms)
        return {
            "snr_raw": 180, "snr_db": 7.8, "snr_pct": 39.0,
            "agc1": 1100, "agc2": 750, "power_db": -46.1,
            "locked": True, "lock": 0x1F, "status": 0x01,
            "dwell_ms": dwell_ms,
        }

    def adaptive_blind_scan(self, freq_khz, sr_min, sr_max, sr_step):
        self._record("adaptive_blind_scan", freq_khz, sr_min, sr_max, sr_step)
        return {"freq_khz": freq_khz, "locked": True, "sr_sps": 20000000}

    def motor_halt(self):
        self._record("motor_halt")
        self._motor_halted = True

    def motor_drive_east(self, steps):
        self._record("motor_drive_east", steps)
        self._motor_halted = False

    def motor_drive_west(self, steps):
        self._record("motor_drive_west", steps)
        self._motor_halted = False

    def motor_goto_position(self, slot):
        self._record("motor_goto_position", slot)

    def motor_goto_x(self, observer_lon, sat_lon):
        self._record("motor_goto_x", observer_lon, sat_lon)

    def motor_store_position(self, slot):
        self._record("motor_store_position", slot)

    def start_intersil(self, on=True):
        self._record("start_intersil", on=on)
        self._lnb_on = on

    def set_lnb_voltage(self, high):
        self._record("set_lnb_voltage", high)

    def set_22khz_tone(self, on):
        self._record("set_22khz_tone", on)

    def i2c_bus_scan(self):
        self._record("i2c_bus_scan")
        return [0x08, 0x61, 0x51]

    def i2c_raw_read(self, slave, register):
        self._record("i2c_raw_read", slave, register)
        return 0xAB

    def arm_transfer(self, on):
        self._record("arm_transfer", on)
        self._armed = on

    def read_stream(self, timeout=500):
        self._record("read_stream", timeout=timeout)
        if self._armed:
            return bytes([0x47, 0x00, 0x00, 0x10] + [0xFF] * 184)
        return None


class MockContext:
    """Minimal mock of FastMCP Context for direct tool function calls.

    Provides the bridge via request_context.lifespan_context["bridge"],
    matching what _get_bridge(ctx) expects.
    """

    def __init__(self, bridge: DeviceBridge):
        self.request_context = MagicMock()
        self.request_context.lifespan_context = {"bridge": bridge}
        self._progress = []

    async def report_progress(self, current, total):
        self._progress.append((current, total))


@pytest.fixture
def mock_device():
    """Provide a fresh MockSkyWalker1 instance."""
    return MockSkyWalker1()


@pytest.fixture
def bridge(mock_device):
    """Provide a DeviceBridge wrapping the mock device."""
    b = DeviceBridge(mock_device)
    srv._bridge = b
    yield b
    b.cancel_motor_watchdog()
    srv._bridge = None


@pytest.fixture
def ctx(bridge):
    """Provide a MockContext wired to the bridge."""
    return MockContext(bridge)