import importlib
import sys
import types
from unittest import mock

import pytest


def import_app_with_gradio_stub():
    sys.modules.pop("app", None)
    sys.modules["gradio"] = types.ModuleType("gradio")
    return importlib.import_module("app")


def import_app_without_gradio():
    original_import = __import__

    def blocked_import(name, globals=None, locals=None, fromlist=(), level=0):
        if name == "gradio":
            raise ModuleNotFoundError("No module named 'gradio'")
        return original_import(name, globals, locals, fromlist, level)

    sys.modules.pop("app", None)
    sys.modules.pop("gradio", None)
    with mock.patch("builtins.__import__", side_effect=blocked_import):
        return importlib.import_module("app")


def test_normalize_rhythm_override_treats_automatic_as_none():
    app = import_app_with_gradio_stub()

    assert app.normalize_rhythm_override("Automatic") is None


def test_session_examples_leave_tone_center_blank_for_automatic_mode():
    app = import_app_with_gradio_stub()

    assert all(example[2] is None for example in app.SESSION_EXAMPLES)


def test_build_session_copy_uses_human_labels():
    app = import_app_with_gradio_stub()
    analysis = {
        "emotional_state": "anxious",
        "session_profile": {
            "title": "Grounding Tide",
            "emotional_tone": "Settling and steady",
            "guidance": "Let your breath fall behind the pulse until the session feels steady.",
            "reflection": "This session favors stability over intensity.",
        },
    }

    card = app.build_session_copy(analysis)

    assert card["session_name"] == "Grounding Tide"
    assert card["listening_path"].startswith("Settling and steady")
    assert "stability over intensity" in card["session_reflection"]


def test_import_without_gradio_uses_interface_guard():
    app = import_app_without_gradio()

    assert app.gr is None
    with pytest.raises(ModuleNotFoundError, match="gradio is required"):
        app.create_interface()


def test_rhythma_experience_returns_session_led_copy(monkeypatch):
    app = import_app_with_gradio_stub()
    analysis = {
        "emotional_state": "anxious",
        "transcription": "",
        "session_profile": {
            "title": "Grounding Tide",
            "emotional_tone": "Settling and steady",
            "guidance": "Let your breath fall behind the pulse until the session feels steady.",
            "reflection": "This session favors stability over intensity.",
        },
    }

    monkeypatch.setattr(app, "analyze_input", lambda text, audio: analysis)
    monkeypatch.setattr(
        app,
        "generate_modulated_experience",
        lambda *args, **kwargs: ("legacy analysis", "session.wav", "plot", "image", "legacy symbolic"),
    )

    outputs = app.rhythma_experience(
        "I feel anxious and need to settle down",
        None,
        override_freq=0,
        override_modulation="sine",
        override_rhythm="Automatic",
        duration=5,
    )

    assert outputs[0] == "### Grounding Tide"
    assert outputs[1] == "Settling and steady"
    assert outputs[2].startswith("Settling and steady")
    assert outputs[3] == "session.wav"
    assert outputs[6] == "This session favors stability over intensity."
    assert outputs[7] == ""


def test_rhythma_experience_degrades_copy_consistently_on_generation_failure(monkeypatch):
    app = import_app_with_gradio_stub()
    analysis = {
        "emotional_state": "anxious",
        "transcription": "",
        "session_profile": {
            "title": "Grounding Tide",
            "emotional_tone": "Settling and steady",
            "guidance": "Let your breath fall behind the pulse until the session feels steady.",
            "reflection": "This session favors stability over intensity.",
        },
    }

    monkeypatch.setattr(app, "analyze_input", lambda text, audio: analysis)
    monkeypatch.setattr(
        app,
        "generate_modulated_experience",
        lambda *args, **kwargs: ("Generation unavailable", None, None, None, "legacy symbolic"),
    )

    outputs = app.rhythma_experience(
        "I feel anxious and need to settle down",
        None,
        override_freq=0,
        override_modulation="sine",
        override_rhythm="Automatic",
        duration=5,
    )

    assert outputs[2] == "Generation unavailable"
    assert outputs[6] == "Generation unavailable"


def test_rhythma_experience_uses_real_session_profile_across_pipeline(monkeypatch):
    app = import_app_with_gradio_stub()
    captured = {}

    class FakeEngine:
        def __init__(self, **kwargs):
            captured["init_kwargs"] = kwargs
            self.generated_audio = None

        def render_session(self, profile, duration):
            captured["render_profile"] = profile
            captured["render_duration"] = duration
            return "layered-session-audio"

        def generate_modulated_wave(self, duration):
            captured["generated_duration"] = duration
            return "legacy-generated-audio"

        def save_audio(self, duration, file_path):
            captured["save_duration"] = duration
            captured["save_path"] = file_path
            self.generated_audio = self.generate_modulated_wave(duration)
            return file_path

        def visualize_waveform(self, duration):
            captured["visualize_duration"] = duration
            return "plot"

        def get_waveform_image(self):
            return "image"

        def get_complete_analysis(self):
            return "legacy analysis"

        def get_symbolic_interpretation(self):
            return "legacy symbolic"

    monkeypatch.setattr(app, "RhythmaModulationEngine", FakeEngine)

    outputs = app.rhythma_experience(
        "I want to focus on deep work",
        None,
        override_freq=0,
        override_modulation="sine",
        override_rhythm="Automatic",
        duration=5,
    )

    assert outputs[0] == "### Clear Horizon"
    assert outputs[1] == "Attentive and composed"
    assert outputs[2].startswith("Attentive and composed")
    assert outputs[6] == "This session narrows motion to support sustained attention."
    assert outputs[7] == ""
    assert captured["init_kwargs"] == {
        "base_freq": 512.0,
        "modulation_type": "sine",
        "rhythm_pattern": "focused",
        "emotional_state": None,
    }
    assert captured["render_profile"]["title"] == "Clear Horizon"
    assert captured["render_profile"]["tone_center"] == 512.0
    assert captured["render_profile"]["pattern"] == "focused"
    assert captured["render_duration"] == 5
    assert captured["save_duration"] == 5
    assert captured["visualize_duration"] == 5


def test_generate_modulated_experience_prefers_explicit_rhythm_override_without_session_profile(monkeypatch):
    app = import_app_with_gradio_stub()
    captured = {}

    class FakeEngine:
        def __init__(self, **kwargs):
            captured["init_kwargs"] = kwargs

        def save_audio(self, duration, file_path):
            return file_path

        def visualize_waveform(self, duration):
            return "plot"

        def get_waveform_image(self):
            return "image"

        def get_complete_analysis(self):
            return "legacy analysis"

        def get_symbolic_interpretation(self):
            return "legacy symbolic"

    monkeypatch.setattr(app, "RhythmaModulationEngine", FakeEngine)

    analysis = {
        "emotional_state": "neutral",
        "rhythm_pattern": "calm",
        "transcription": "",
    }

    result = app.generate_modulated_experience(
        analysis,
        modulation_type="sine",
        rhythm_pattern="focused",
        duration=5,
    )

    assert result[0] == "legacy analysis"
    assert captured["init_kwargs"]["rhythm_pattern"] == "focused"