"""Tests for the FigmentEffect plugin."""

import os
from enum import Enum
from unittest.mock import patch

import pytest

from effects_plugins.figment import FigmentEffect, FigmentPhase, FigmentState
from engine.effects.types import EffectConfig, EffectContext


FIXTURE_SVG = os.path.join(
    os.path.dirname(__file__), "fixtures", "test.svg"
)
FIGMENTS_DIR = os.path.join(os.path.dirname(__file__), "fixtures")


class TestFigmentPhase:
    def test_is_enum(self):
        assert issubclass(FigmentPhase, Enum)

    def test_has_all_phases(self):
        assert hasattr(FigmentPhase, "REVEAL")
        assert hasattr(FigmentPhase, "HOLD")
        assert hasattr(FigmentPhase, "DISSOLVE")


class TestFigmentState:
    def test_creation(self):
        state = FigmentState(
            phase=FigmentPhase.REVEAL,
            progress=0.5,
            rows=["█▀▄", " █ "],
            gradient=[46, 40, 34, 28, 22, 22, 34, 40, 46, 82, 118, 231],
            center_row=5,
            center_col=10,
        )
        assert state.phase == FigmentPhase.REVEAL
        assert state.progress == 0.5
        assert len(state.rows) == 2


class TestFigmentEffectInit:
    def test_name(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        assert effect.name == "figment"

    def test_default_config(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        assert effect.config.enabled is False
        assert effect.config.intensity == 1.0
        assert effect.config.params["interval_secs"] == 60
        assert effect.config.params["display_secs"] == 4.5

    def test_process_is_noop(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        buf = ["line1", "line2"]
        ctx = EffectContext(
            terminal_width=80,
            terminal_height=24,
            scroll_cam=0,
            ticker_height=20,
        )
        result = effect.process(buf, ctx)
        assert result == buf
        assert result is buf

    def test_configure(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        new_cfg = EffectConfig(enabled=True, intensity=0.5)
        effect.configure(new_cfg)
        assert effect.config.enabled is True
        assert effect.config.intensity == 0.5


class TestFigmentStateMachine:
    def test_idle_initially(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        effect.config.enabled = True
        state = effect.get_figment_state(0, 80, 24)
        # Timer hasn't fired yet, should be None (idle)
        assert state is None

    def test_trigger_starts_reveal(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        effect.config.enabled = True
        effect.trigger(80, 24)
        state = effect.get_figment_state(1, 80, 24)
        assert state is not None
        assert state.phase == FigmentPhase.REVEAL

    def test_full_cycle(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        effect.config.enabled = True
        effect.config.params["display_secs"] = 0.15  # 3 phases x 0.05s

        effect.trigger(40, 20)

        # Advance through reveal (30 frames at 0.05s = 1.5s, but we shrunk it)
        # With display_secs=0.15, each phase is 0.05s = 1 frame
        state = effect.get_figment_state(1, 40, 20)
        assert state is not None
        assert state.phase == FigmentPhase.REVEAL

        # Advance enough frames to get through all phases
        last_state = None
        for frame in range(2, 100):
            state = effect.get_figment_state(frame, 40, 20)
            if state is None:
                break
            last_state = state

        # Should have completed the full cycle back to idle
        assert state is None

    def test_timer_fires_at_interval(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        effect.config.enabled = True
        effect.config.params["interval_secs"] = 0.1  # 2 frames at 20fps

        # Frame 0: idle
        state = effect.get_figment_state(0, 40, 20)
        assert state is None

        # Advance past interval (0.1s = 2 frames)
        state = effect.get_figment_state(1, 40, 20)
        state = effect.get_figment_state(2, 40, 20)
        state = effect.get_figment_state(3, 40, 20)
        # Timer should have fired by now
        assert state is not None


class TestFigmentEdgeCases:
    def test_empty_figment_dir(self, tmp_path):
        effect = FigmentEffect(figment_dir=str(tmp_path))
        effect.config.enabled = True
        effect.trigger(40, 20)
        state = effect.get_figment_state(1, 40, 20)
        # No SVGs available — should stay idle
        assert state is None

    def test_missing_figment_dir(self):
        effect = FigmentEffect(figment_dir="/nonexistent/path")
        effect.config.enabled = True
        effect.trigger(40, 20)
        state = effect.get_figment_state(1, 40, 20)
        assert state is None

    def test_disabled_ignores_trigger(self):
        effect = FigmentEffect(figment_dir=FIGMENTS_DIR)
        effect.config.enabled = False
        effect.trigger(80, 24)
        state = effect.get_figment_state(1, 80, 24)
        assert state is None