import os
import sys

import pytest
from fastapi.testclient import TestClient

sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))


@pytest.fixture(autouse=True)
def temp_env(monkeypatch, tmp_path):
    db_path = str(tmp_path / "test_vibe.db")
    model_path = str(tmp_path / "test_model.pkl")
    monkeypatch.setattr("app.config.settings.DB_PATH", db_path)
    monkeypatch.setattr("app.config.settings.MODEL_PATH", model_path)


@pytest.fixture
def client(temp_env):
    from app.main import app
    from app.api.routes import init_engines
    from app.data.database import init_db

    init_db()
    init_engines()

    return TestClient(app)


def test_health(client):
    resp = client.get("/health")
    assert resp.status_code == 200
    assert resp.json()["status"] == "ok"


def test_scan_file(client):
    import random
    rng = random.Random(42)
    data = bytes(rng.randint(0, 255) for _ in range(4096))

    resp = client.post("/scan", files={"file": ("test.bin", data, "application/octet-stream")})
    assert resp.status_code == 200
    body = resp.json()
    assert "sha256" in body
    assert "vibe_id" in body
    assert "final_verdict" in body
    assert "pipeline_stages_run" in body
    assert body["is_new_vibe"] is True


def test_scan_duplicate(client):
    import random
    rng = random.Random(99)
    data = bytes(rng.randint(0, 255) for _ in range(4096))

    client.post("/scan", files={"file": ("test.bin", data, "application/octet-stream")})
    resp = client.post("/scan", files={"file": ("test.bin", data, "application/octet-stream")})
    assert resp.status_code == 200
    body = resp.json()
    assert body["is_new_vibe"] is False
    assert body["final_verdict"] in ("KNOWN_MUTATION", "VIBE_MUTATION")


def test_scan_empty_file(client):
    resp = client.post("/scan", files={"file": ("empty.bin", b"", "application/octet-stream")})
    assert resp.status_code == 400


def test_stats(client):
    resp = client.get("/stats")
    assert resp.status_code == 200
    body = resp.json()
    assert "total_vibes" in body
    assert "total_samples" in body


def test_vibe_not_found(client):
    resp = client.get("/vibes/nonexistent-id")
    assert resp.status_code == 404


def test_scan_then_get_vibe(client):
    import random
    rng = random.Random(77)
    data = bytes(rng.randint(0, 255) for _ in range(4096))

    scan_resp = client.post("/scan", files={"file": ("test.bin", data, "application/octet-stream")})
    vibe_id = scan_resp.json()["vibe_id"]

    resp = client.get(f"/vibes/{vibe_id}")
    assert resp.status_code == 200
    body = resp.json()
    assert body["vibe_id"] == vibe_id
    assert len(body["samples"]) >= 1