import unittest
from fastapi.testclient import TestClient

import main
from db import connect, create
from scripts.migration_to_households import run_migration


class TestIngredientsParseApiV2(unittest.IsolatedAsyncioTestCase):
    async def asyncSetUp(self):
        self.conn = await connect(":memory:")
        await create(self.conn)
        await run_migration(self.conn)

        async def override_get_db():
            try:
                yield self.conn
            finally:
                pass

        main.app.dependency_overrides[main.get_db] = override_get_db
        self.client = TestClient(main.app)

        # Register user and create household
        r = self.client.post(
            "/api/v1/auth/register",
            json={"email": "ing@test.com", "password": "pw", "displayName": "Ing"},
        )
        assert r.status_code == 200, r.text
        token = r.json()["accessToken"]
        self.headers = {"Authorization": f"Bearer {token}"}

        r2 = self.client.post("/api/v1/households", headers=self.headers, json={"name": "H"})
        assert r2.status_code == 200, r2.text
        self.slug = r2.json()["slug"]

    async def asyncTearDown(self):
        await self.conn.close()
        main.app.dependency_overrides.clear()

    def test_parse_multiple_ingredients(self):
        lines = [
            "14oz milk powder",
            "2 cups flour",
            "1 tsp salt",
            "egg",  # defaults to 1 Items
        ]
        parsed = []
        for line in lines:
            r = self.client.get(
                f"/api/v1/households/{self.slug}/ingredients/parse",
                params={"line": line},
                headers=self.headers,
            )
            assert r.status_code == 200, r.text
            parsed.append(r.json())

        # Basic shape checks
        for item in parsed:
            assert "name" in item and isinstance(item["name"], str)
            assert "line" in item and isinstance(item["line"], str)
            assert "quantity" in item
            assert "unit" in item and isinstance(item["unit"], str)
            # Quantity should be a positive number
            assert float(item["quantity"]) > 0
            # The original sentence should round-trip into line
            assert len(item["line"]) >= len(item["name"]) >= 1

        # Spot checks for unit/quantity normalization
        # 14oz milk powder
        oz, cups, tsp, egg = parsed
        assert float(oz["quantity"]) == 14.0
        assert oz["unit"] == "Ounce"
        assert "milk" in oz["name"].lower()

        assert float(cups["quantity"]) == 2.0
        assert cups["unit"] == "Cup"
        assert cups["name"].lower() == "flour"

        assert float(tsp["quantity"]) == 1.0
        assert tsp["unit"] == "Teaspoon"
        assert tsp["name"].lower() == "salt"

        assert float(egg["quantity"]) == 1.0
        assert egg["unit"] == "Items"
        assert egg["name"].lower() == "egg"