"""Tests for backend.api_server.APIServer REST endpoints."""

import sys
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest
import pytest_asyncio

# Ensure project root is on path
project_root = Path(__file__).resolve().parent.parent.parent
sys.path.insert(0, str(project_root))


# ── GET /api/status ─────────────────────────────────────────────────


@pytest.mark.asyncio
async def test_get_status(api_client):
    resp = await api_client.get("/api/status")
    assert resp.status_code == 200
    data = resp.json()
    assert "state" in data
    assert "is_transcribing" in data
    assert "version" in data
    assert "web_server" in data


# ── GET /api/config ─────────────────────────────────────────────────


@pytest.mark.asyncio
async def test_get_config(api_client):
    resp = await api_client.get("/api/config")
    assert resp.status_code == 200
    data = resp.json()
    # The config should be a dict (the raw config mapping)
    assert isinstance(data, dict)


# ── PUT /api/config ─────────────────────────────────────────────────


@pytest.mark.asyncio
async def test_put_config(api_client, controller):
    """Updating config via PUT should persist and return success."""
    # Patch reload_engine to avoid heavy lifting
    controller.reload_engine = MagicMock(return_value=(True, "ok"))
    controller.current_model_size = "base.en"
    controller.current_device_config = "auto"
    controller.config.set("transcription.model", "base.en")
    controller.config.set("transcription.device", "auto")

    resp = await api_client.put(
        "/api/config",
        json={"settings": {"display.font_size": 24}},
    )
    assert resp.status_code == 200
    body = resp.json()
    assert body["status"] == "ok"

    # Verify the value was actually saved
    assert controller.config.get("display.font_size") == 24


# ── POST /api/start (engine not ready) ─────────────────────────────


@pytest.mark.asyncio
async def test_start_when_not_ready(api_client, controller):
    """Starting transcription without an engine should return 400."""
    controller.transcription_engine = None
    resp = await api_client.post("/api/start")
    assert resp.status_code == 400


# ── POST /api/clear ─────────────────────────────────────────────────


@pytest.mark.asyncio
async def test_clear(api_client, controller):
    from client.transcription_engine_realtime import TranscriptionResult
    from datetime import datetime

    controller.transcriptions = [
        TranscriptionResult(text="One", is_final=True, timestamp=datetime.now(), user_name="U"),
    ]

    resp = await api_client.post("/api/clear")
    assert resp.status_code == 200
    body = resp.json()
    assert body["cleared"] == 1
    assert len(controller.transcriptions) == 0


# ── GET /api/audio-devices ──────────────────────────────────────────


@pytest.mark.asyncio
async def test_get_audio_devices(api_client, controller):
    """Audio devices endpoint should return a list, even when mocked."""
    # Mock sounddevice so the test works without audio hardware
    with patch("backend.app_controller.AppController.get_audio_devices",
               return_value=[{"index": 0, "name": "Mock Mic"}]):
        resp = await api_client.get("/api/audio-devices")
    assert resp.status_code == 200
    data = resp.json()
    assert "devices" in data
    assert len(data["devices"]) >= 1


# ── GET /api/compute-devices ────────────────────────────────────────


@pytest.mark.asyncio
async def test_get_compute_devices(api_client, controller):
    resp = await api_client.get("/api/compute-devices")
    assert resp.status_code == 200
    data = resp.json()
    assert "devices" in data
    # At minimum we get the "Auto-detect" entry
    assert any(d["id"] == "auto" for d in data["devices"])


# ── GET /api/check-update ──────────────────────────────────────────


@pytest.mark.asyncio
async def test_check_update(api_client, controller):
    """check-update should return a dict with an 'available' key."""
    with patch.object(controller, "check_for_updates",
                      return_value={"available": False, "current_version": "1.0.0"}):
        resp = await api_client.get("/api/check-update")
    assert resp.status_code == 200
    data = resp.json()
    assert "available" in data


# ── GET /api/version ────────────────────────────────────────────────


@pytest.mark.asyncio
async def test_version(api_client):
    resp = await api_client.get("/api/version")
    assert resp.status_code == 200
    data = resp.json()
    assert "version" in data
    # Should be a non-empty string
    assert isinstance(data["version"], str)
    assert len(data["version"]) > 0