package cn.aqroid.business.tenant;

import net.jqwik.api.*;
import net.jqwik.api.constraints.*;

import static org.junit.jupiter.api.Assertions.*;

/**
 * 租户软删除属性测试
 * 
 * **Feature: multi-tenant-system, Property 12: Tenant Soft Delete**
 * **Validates: Requirements 5.4**
 * 
 * 测试租户软删除行为：删除操作应该设置del_flag='2'而不是物理删除记录
 * 
 * @author aqroid
 */
public class TenantSoftDeletePropertyTest {

    /**
     * 模拟租户实体用于测试
     */
    static class TestTenant {
        private Long tenantId;
        private String tenantName;
        private String delFlag;

        public TestTenant(Long tenantId, String tenantName) {
            this.tenantId = tenantId;
            this.tenantName = tenantName;
            this.delFlag = "0"; // 默认存在状态
        }

        public Long getTenantId() { return tenantId; }
        public String getTenantName() { return tenantName; }
        public String getDelFlag() { return delFlag; }
        public void setDelFlag(String delFlag) { this.delFlag = delFlag; }
        
        /**
         * 模拟软删除操作 - 与TenantMapper.xml中的deleteTenantByTenantId行为一致
         * SQL: update sys_tenant set del_flag = '2' where tenant_id = #{tenantId}
         */
        public void softDelete() {
            this.delFlag = "2";
        }
        
        /**
         * 检查租户是否被软删除
         */
        public boolean isSoftDeleted() {
            return "2".equals(this.delFlag);
        }
        
        /**
         * 检查租户是否存在（未被删除）
         */
        public boolean exists() {
            return "0".equals(this.delFlag);
        }
    }

    /**
     * Property 12: Tenant Soft Delete
     * 
     * *For any* tenant that is deleted, the del_flag should be set to '2' 
     * and the record should still exist (not physically deleted).
     * 
     * **Validates: Requirements 5.4**
     */
    @Property(tries = 100)
    void softDeleteShouldSetDelFlagTo2AndPreserveRecord(
            @ForAll @LongRange(min = 1, max = Long.MAX_VALUE) Long tenantId,
            @ForAll @StringLength(min = 1, max = 100) @AlphaChars String tenantName
    ) {
        // Arrange: 创建一个存在的租户
        TestTenant tenant = new TestTenant(tenantId, tenantName);
        
        // 验证初始状态
        assertTrue(tenant.exists(), "新创建的租户应该存在");
        assertFalse(tenant.isSoftDeleted(), "新创建的租户不应该被标记为删除");
        assertEquals("0", tenant.getDelFlag(), "新创建的租户del_flag应该为'0'");
        
        // Act: 执行软删除
        tenant.softDelete();
        
        // Assert: 验证软删除后的状态
        // 1. del_flag应该被设置为'2'
        assertEquals("2", tenant.getDelFlag(), 
            "软删除后del_flag应该为'2'");
        
        // 2. 记录仍然存在（通过检查tenantId和tenantName未被清空）
        assertNotNull(tenant.getTenantId(), 
            "软删除后tenantId应该仍然存在");
        assertNotNull(tenant.getTenantName(), 
            "软删除后tenantName应该仍然存在");
        assertEquals(tenantId, tenant.getTenantId(), 
            "软删除后tenantId应该保持不变");
        assertEquals(tenantName, tenant.getTenantName(), 
            "软删除后tenantName应该保持不变");
        
        // 3. isSoftDeleted应该返回true
        assertTrue(tenant.isSoftDeleted(), 
            "软删除后isSoftDeleted()应该返回true");
        
        // 4. exists应该返回false
        assertFalse(tenant.exists(), 
            "软删除后exists()应该返回false");
    }

    /**
     * 验证软删除是幂等的 - 多次删除同一租户应该产生相同结果
     * 
     * **Validates: Requirements 5.4**
     */
    @Property(tries = 100)
    void softDeleteShouldBeIdempotent(
            @ForAll @LongRange(min = 1, max = Long.MAX_VALUE) Long tenantId,
            @ForAll @StringLength(min = 1, max = 100) @AlphaChars String tenantName,
            @ForAll @IntRange(min = 1, max = 10) int deleteCount
    ) {
        // Arrange
        TestTenant tenant = new TestTenant(tenantId, tenantName);
        
        // Act: 执行多次软删除
        for (int i = 0; i < deleteCount; i++) {
            tenant.softDelete();
        }
        
        // Assert: 无论删除多少次，结果应该相同
        assertEquals("2", tenant.getDelFlag(), 
            "多次软删除后del_flag应该仍然为'2'");
        assertTrue(tenant.isSoftDeleted(), 
            "多次软删除后isSoftDeleted()应该返回true");
        assertNotNull(tenant.getTenantId(), 
            "多次软删除后记录应该仍然存在");
    }

    /**
     * 验证del_flag状态转换的正确性
     * 
     * **Validates: Requirements 5.4**
     */
    @Property(tries = 100)
    void delFlagTransitionShouldBeCorrect(
            @ForAll @LongRange(min = 1, max = Long.MAX_VALUE) Long tenantId,
            @ForAll @StringLength(min = 1, max = 100) @AlphaChars String tenantName
    ) {
        // Arrange
        TestTenant tenant = new TestTenant(tenantId, tenantName);
        String initialDelFlag = tenant.getDelFlag();
        
        // Act
        tenant.softDelete();
        String afterDeleteDelFlag = tenant.getDelFlag();
        
        // Assert: 验证状态转换
        assertEquals("0", initialDelFlag, 
            "初始del_flag应该为'0'");
        assertEquals("2", afterDeleteDelFlag, 
            "删除后del_flag应该为'2'");
        assertNotEquals(initialDelFlag, afterDeleteDelFlag, 
            "删除前后del_flag应该不同");
    }
}
