"""Unit tests for price parsing utilities."""
from __future__ import annotations

import pytest

from market.scrape.product.helpers.price import parse_price, parse_case_size


class TestParsePrice:
    def test_gbp(self):
        val, cur, raw = parse_price("£30.50")
        assert val == 30.5
        assert cur == "GBP"

    def test_eur(self):
        val, cur, raw = parse_price("€1,234.00")
        assert val == 1234.0
        assert cur == "EUR"

    def test_usd(self):
        val, cur, raw = parse_price("$9.99")
        assert val == 9.99
        assert cur == "USD"

    def test_no_symbol(self):
        val, cur, raw = parse_price("42.50")
        assert val == 42.5
        assert cur is None

    def test_no_match(self):
        val, cur, raw = parse_price("no price here")
        assert val is None
        assert cur is None

    def test_empty_string(self):
        val, cur, raw = parse_price("")
        assert val is None
        assert raw == ""

    def test_none_input(self):
        val, cur, raw = parse_price(None)
        assert val is None
        assert raw == ""

    def test_thousands_comma_stripped(self):
        val, cur, raw = parse_price("£1,000.50")
        assert val == 1000.5

    def test_whitespace_around_symbol(self):
        val, cur, raw = parse_price("£ 5.00")
        assert val == 5.0
        assert cur == "GBP"

    def test_raw_preserved(self):
        _, _, raw = parse_price("  £10.00  ")
        assert raw == "£10.00"


class TestParseCaseSize:
    def test_standard(self):
        count, qty, unit, _ = parse_case_size("6 x 500g")
        assert count == 6
        assert qty == 500.0
        assert unit == "g"

    def test_no_space(self):
        count, qty, unit, _ = parse_case_size("12x1L")
        assert count == 12
        assert qty == 1.0
        assert unit == "L"

    def test_multiplication_sign(self):
        count, qty, unit, _ = parse_case_size("24 × 330 ml")
        assert count == 24
        assert qty == 330.0
        assert unit == "ml"

    def test_uppercase_x(self):
        count, qty, unit, _ = parse_case_size("6X500g")
        assert count == 6

    def test_no_match(self):
        count, qty, unit, raw = parse_case_size("just text")
        assert count is None
        assert qty is None
        assert unit is None

    def test_empty(self):
        count, qty, unit, raw = parse_case_size("")
        assert count is None
        assert raw == ""

    def test_none_input(self):
        count, _, _, raw = parse_case_size(None)
        assert count is None
        assert raw == ""