package com.talentcard.server.business.merchant;

import static org.assertj.core.api.Assertions.assertThat;

import java.math.BigDecimal;
import java.util.LinkedHashMap;
import java.util.Map;

import org.junit.jupiter.api.Test;

/**
 * 免费入住确认页上「超过天数按…」那句话。
 *
 * <p>酒店在商家权益里把到店消费配成「折扣」或「优惠（立减）」二选一；以前这里只认折扣，
 * 配成优惠的酒店页面上整行空白（工单「酒店服务-到店消费：需要显示超过免费天数后，按照
 * 门店的多少折计算」）。这个类不启动 Spring 上下文，只盯文案拼装。
 */
class FreeStayExceedDiscountTextTests {

    private final ManualConsumptionService service = new ManualConsumptionService(null, null);

    @Test
    void discountRuleTurnsIntoTheMarketPriceRate() {
        assertThat(service.exceedDiscountText(rule("0.68", "0")))
                .as("门店配的是折扣：显示门市价几折")
                .isEqualTo("门市价6.8折");
        assertThat(service.exceedDiscountText(rule("0.9", "0"))).isEqualTo("门市价9折");
    }

    @Test
    void reductionRuleTurnsIntoTheDiscountAmount() {
        assertThat(service.exceedDiscountText(rule("0", "100")))
                .as("门店配的是优惠（立减）：也该有文案，不能整段空着")
                .isEqualTo("立减100元");
    }

    @Test
    void discountWinsWhenBothAreConfigured() {
        assertThat(service.exceedDiscountText(rule("0.7", "100"))).isEqualTo("门市价7折");
    }

    @Test
    void nothingConfiguredMeansNoExtraLine() {
        assertThat(service.exceedDiscountText(rule("0", "0"))).isEmpty();
        assertThat(service.exceedDiscountText(new LinkedHashMap<>())).isEmpty();
    }

    private Map<String, Object> rule(String discountRate, String fixedReduction) {
        Map<String, Object> rule = new LinkedHashMap<>();
        rule.put("discountRate", new BigDecimal(discountRate));
        rule.put("fixedReduction", new BigDecimal(fixedReduction));
        return rule;
    }
}