"""
Tests for Nutricore agent tools
"""

import pytest
import sys, os
sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
import database


@pytest.fixture(autouse=True)
def setup_db(tmp_path):
    database.DB_PATH = str(tmp_path / "test.db")
    database.init_db()
    yield


# ── browse_products ───────────────────────────────────────────────────────────

def test_browse_all_products():
    from tools import browse_products_impl
    result = browse_products_impl()
    assert result["total"] == 12
    assert len(result["products"]) == 12
    assert len(result["categories"]) == 3


def test_browse_fruit_powders():
    from tools import browse_products_impl
    result = browse_products_impl("Fruit Powders")
    assert result["total"] == 5
    for p in result["products"]:
        assert "Fruit" in p["category"]


def test_browse_vegetable_powders():
    from tools import browse_products_impl
    result = browse_products_impl("Vegetable")
    assert result["total"] == 4


def test_browse_green_leaf_powders():
    from tools import browse_products_impl
    result = browse_products_impl("Green")
    assert result["total"] == 3


def test_browse_empty_category_returns_all():
    from tools import browse_products_impl
    result = browse_products_impl("")
    assert result["total"] == 12


# ── get_product_info ──────────────────────────────────────────────────────────

def test_get_product_info_banana():
    from tools import get_product_info_impl
    result = get_product_info_impl(1)
    assert result["name"] == "Banana Powder"
    assert result["price"] == 850
    assert result["category"] == "Fruit Powders"
    assert "benefits" in result
    assert "nutrition" in result
    assert "how_to_use" in result


def test_get_product_info_moringa():
    from tools import get_product_info_impl
    result = get_product_info_impl(11)
    assert result["name"] == "Moringa Powder"
    assert result["price"] == 900


def test_get_product_info_not_found():
    from tools import get_product_info_impl
    result = get_product_info_impl(999)
    assert "error" in result


# ── find_product_for_goal ─────────────────────────────────────────────────────

def test_find_products_for_weight_loss():
    from tools import find_product_for_goal_impl
    result = find_product_for_goal_impl("weight_loss")
    assert "recommended_products" in result
    assert result["total"] > 0
    assert result["health_goal"] == "weight_loss"


def test_find_products_for_immunity():
    from tools import find_product_for_goal_impl
    result = find_product_for_goal_impl("immunity")
    assert result["total"] > 0


def test_find_products_for_energy():
    from tools import find_product_for_goal_impl
    result = find_product_for_goal_impl("energy")
    assert result["total"] > 0


def test_find_products_for_skin_health():
    from tools import find_product_for_goal_impl
    result = find_product_for_goal_impl("skin_health")
    assert result["total"] > 0


def test_find_products_for_digestion():
    from tools import find_product_for_goal_impl
    result = find_product_for_goal_impl("digestion")
    assert result["total"] > 0


def test_find_products_for_detox():
    from tools import find_product_for_goal_impl
    result = find_product_for_goal_impl("detox")
    assert result["total"] > 0


# ── get_recipe_ideas ──────────────────────────────────────────────────────────

def test_get_recipe_for_banana():
    from tools import get_recipe_ideas_impl
    result = get_recipe_ideas_impl(1)
    assert result["product"] == "Banana Powder"
    assert len(result["recipes"]) > 0


def test_get_recipe_general():
    from tools import get_recipe_ideas_impl
    result = get_recipe_ideas_impl(0)
    assert "recipes" in result
    assert len(result["recipes"]) > 0


def test_get_recipe_not_found():
    from tools import get_recipe_ideas_impl
    result = get_recipe_ideas_impl(999)
    assert "error" in result


# ── compare_products ──────────────────────────────────────────────────────────

def test_compare_moringa_spinach():
    from tools import compare_products_impl
    result = compare_products_impl(11, 10)
    assert "comparison" in result
    assert result["comparison"]["product_1"]["name"] == "Moringa Powder"
    assert result["comparison"]["product_2"]["name"] == "Spinach Powder"
    assert "price_difference" in result


def test_compare_not_found():
    from tools import compare_products_impl
    result = compare_products_impl(999, 1)
    assert "error" in result


def test_compare_price_difference():
    from tools import compare_products_impl
    result = compare_products_impl(1, 2)  # 850 vs 950
    assert result["price_difference"] == 100
    assert result["cheaper"] == "Banana Powder"


# ── check_price_and_delivery ──────────────────────────────────────────────────

def test_check_price_lahore():
    from tools import check_price_and_delivery_impl
    result = check_price_and_delivery_impl(1, "lahore")
    assert result["product"]["name"] == "Banana Powder"
    assert result["delivery"]["city"] == "Lahore"
    assert result["delivery"]["charge"] == 150
    assert result["total_amount"] == 850 + 150


def test_check_price_karachi():
    from tools import check_price_and_delivery_impl
    result = check_price_and_delivery_impl(1, "karachi")
    assert result["delivery"]["charge"] == 200
    assert result["total_amount"] == 850 + 200


def test_check_price_unknown_city():
    from tools import check_price_and_delivery_impl
    result = check_price_and_delivery_impl(1, "quetta")
    assert result["delivery"]["charge"] == 250


def test_check_price_product_not_found():
    from tools import check_price_and_delivery_impl
    result = check_price_and_delivery_impl(999, "lahore")
    assert "error" in result


# ── place_order ───────────────────────────────────────────────────────────────

def test_place_order_success():
    from tools import place_order_impl
    result = place_order_impl(
        name="Ahmed Khan",
        phone="03001234567",
        address="House 12, DHA Phase 5, Lahore",
        products=[{"product_id": 1, "quantity": 2}, {"product_id": 11, "quantity": 1}]
    )
    assert result["success"] is True
    assert "order_id" in result
    assert result["customer"] == "Ahmed Khan"
    assert len(result["items"]) == 2


def test_place_order_missing_name():
    from tools import place_order_impl
    result = place_order_impl(name="", phone="03001234567", address="Lahore", products=[{"product_id": 1}])
    assert "error" in result


def test_place_order_missing_phone():
    from tools import place_order_impl
    result = place_order_impl(name="Ahmed", phone="", address="Lahore", products=[{"product_id": 1}])
    assert "error" in result


def test_place_order_empty_products():
    from tools import place_order_impl
    result = place_order_impl(name="Ahmed", phone="03001234567", address="Lahore", products=[])
    assert "error" in result


def test_place_order_calculates_total():
    from tools import place_order_impl
    result = place_order_impl(
        name="Sara Ali",
        phone="03211234567",
        address="F-7, Islamabad",
        products=[{"product_id": 1, "quantity": 1}]  # PKR 850
    )
    assert result["success"] is True
    # Total = 850 + delivery
    assert result["total_amount"] >= 850