"""缴费模式切换校验"""

import unittest

from app.services.protocol_pay_mode_switch import validate_payment_details_for_save


class TestValidatePaymentDetailsForSave(unittest.TestCase):
    def test_dj_single_dfj_full_contract(self):
        validate_payment_details_for_save(
            "dj",
            10000,
            None,
            [{"payStatus": "dfj", "dueAmount": 10000}],
        )

    def test_dj_allows_multiple_dfj_when_sum_matches(self):
        validate_payment_details_for_save(
            "dj",
            10000,
            None,
            [
                {"payStatus": "dfj", "dueAmount": 2000},
                {"payStatus": "dfj", "dueAmount": 8000},
            ],
        )

    def test_dj_rejects_multiple_dfj_wrong_sum(self):
        with self.assertRaises(ValueError) as ctx:
            validate_payment_details_for_save(
                "dj",
                10000,
                None,
                [
                    {"payStatus": "dfj", "dueAmount": 2000},
                    {"payStatus": "dfj", "dueAmount": 7000},
                ],
            )
        self.assertIn("之和应为", str(ctx.exception))

    def test_dj_partial_paid_remaining(self):
        validate_payment_details_for_save(
            "dj",
            10000,
            None,
            [
                {"payStatus": "yjf", "dueAmount": 2000},
                {"payStatus": "dfj", "dueAmount": 8000},
            ],
        )

    def test_dj_partial_paid_wrong_remaining(self):
        with self.assertRaises(ValueError):
            validate_payment_details_for_save(
                "dj",
                10000,
                None,
                [
                    {"payStatus": "yjf", "dueAmount": 2000},
                    {"payStatus": "dfj", "dueAmount": 10000},
                ],
            )

    def test_djfq_same_as_fq(self):
        validate_payment_details_for_save(
            "djfq",
            41000,
            4,
            [
                {"payStatus": "dfj", "installmentNo": 1, "dueAmount": 29360},
                {"payStatus": "dfj", "installmentNo": 2, "dueAmount": 3880},
                {"payStatus": "dfj", "installmentNo": 3, "dueAmount": 3880},
                {"payStatus": "dfj", "installmentNo": 4, "dueAmount": 3880},
            ],
            installment_ratios=[29360, 3880, 3880, 3880],
        )

    def test_fq_count_mismatch(self):
        with self.assertRaises(ValueError):
            validate_payment_details_for_save(
                "fq",
                6000,
                6,
                [{"payStatus": "dfj", "dueAmount": 6000}],
            )

    def test_fq_partial_paid_valid(self):
        validate_payment_details_for_save(
            "fq",
            10000,
            4,
            [
                {"payStatus": "yjf", "installmentNo": 1, "dueAmount": 2500},
                {"payStatus": "yjf", "installmentNo": 2, "dueAmount": 2500},
                {"payStatus": "dfj", "installmentNo": 3, "dueAmount": 2500},
                {"payStatus": "dfj", "installmentNo": 4, "dueAmount": 2500},
            ],
        )

    def test_fq_jfqrz_rejected(self):
        with self.assertRaises(ValueError):
            validate_payment_details_for_save(
                "fq",
                6000,
                2,
                [
                    {"payStatus": "jfqrz", "dueAmount": 3000},
                    {"payStatus": "dfj", "dueAmount": 3000},
                ],
            )

    def test_dj_ytf_allowed(self):
        """已退费为终态，保存协议单时不应阻断。"""
        validate_payment_details_for_save(
            "dj",
            10000,
            None,
            [{"payStatus": "ytf", "dueAmount": 10000}],
        )

    def test_fq_ytf_allowed(self):
        validate_payment_details_for_save(
            "fq",
            6000,
            2,
            [
                {"payStatus": "ytf", "installmentNo": 1, "dueAmount": 3000},
                {"payStatus": "dfj", "installmentNo": 2, "dueAmount": 3000},
            ],
        )

    def test_blocking_status_rejected(self):
        with self.assertRaises(ValueError):
            validate_payment_details_for_save(
                "dj",
                10000,
                None,
                [{"payStatus": "jfqrz", "dueAmount": 10000}],
            )

    def test_tfqrz_blocking_rejected(self):
        with self.assertRaises(ValueError):
            validate_payment_details_for_save(
                "dj",
                10000,
                None,
                [{"payStatus": "tfqrz", "dueAmount": 10000}],
            )


if __name__ == "__main__":
    unittest.main()