package com.yunhai.cms.svcitem;

import com.yunhai.cms.support.CmsIntegrationTestBase;
import com.yunhai.cms.svcitem.enums.ServiceItemStatusEnum;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;

import java.nio.charset.StandardCharsets;

import static org.assertj.core.api.Assertions.assertThat;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

/**
 * 门户服务中心/事项指南集成测试（事项库详细设计 §5/§6 + M0 回退 IT 0.3）：
 * 路由双变体、301 兼容、404 语义、筛选与分页 URL 预生成（C-2）、富文本补基准、
 * applyUrl 三态、可选模板整页回退（缺模板主题的资产段退 default）。
 */
@DisplayName("SvcItemPortal - 门户公开层（L2）")
class SvcItemPortalIT extends CmsIntegrationTestBase {

    @Autowired
    private MockMvc mockMvc;
    @Autowired
    private com.yunhai.cms.svcitem.service.SvcItemQuery svcItemQuery;

    private Integer siteId;

    @BeforeEach
    void seed() {
        purgeTables();
        siteId = persistSite("demo1", 1, "演示站点一").getId();
        persistSvcDict(siteId, "object", "person", "个人", 1);
        persistSvcDict(siteId, "object", "legal", "法人", 1);
        persistSvcDict(siteId, "category", "jw", "教务服务", 1);
    }

    @AfterEach
    void clean() {
        purgeTables();
    }

    private Integer publishItem(String code, String title, String objectKey, String categoryKey) {
        com.yunhai.cms.svcitem.entity.CmsServiceItem item =
                persistSvcItem(siteId, code, title, ServiceItemStatusEnum.PUBLISHED);
        item.setObjectKey(objectKey);
        item.setCategoryKey(categoryKey);
        item.setDeptName("教务处");
        return serviceItemRepository.saveAndFlush(item).getId();
    }

    private String body(MvcResult result) throws java.io.UnsupportedEncodingException {
        return result.getResponse().getContentAsString(StandardCharsets.UTF_8);
    }

    // ===== 路由（§5.1：单段 + 嵌套双变体、301、404）=====

    @Test
    @DisplayName("路由双变体：/portal/{code}/service 与 /portal/{p}/{s}/service 均 200")
    void routes_singleAndNested() throws Exception {
        publishItem("S1", "转学办理", "person", "jw");
        assertThat(body(mockMvc.perform(get("/portal/demo1/service"))
                .andExpect(status().isOk()).andReturn()))
                .contains("服务中心").contains("转学办理");

        Integer parent = persistSite("schx", 1, "主站").getId();
        Integer childId = persistSite("child", 1, "子站", parent).getId();
        com.yunhai.cms.svcitem.entity.CmsServiceItem child =
                persistSvcItem(childId, "C1", "子站事项", ServiceItemStatusEnum.PUBLISHED);
        serviceItemRepository.saveAndFlush(child);
        assertThat(body(mockMvc.perform(get("/portal/schx/child/service"))
                .andExpect(status().isOk()).andReturn()))
                .contains("服务中心").contains("子站事项");
    }

    @Test
    @DisplayName("旧单段 code 访问子站服务页 301 到嵌套形态（保留子路径与 query）")
    void routes_legacySingleSegmentRedirects301() throws Exception {
        Integer parent = persistSite("schy", 1, "主站Y").getId();
        persistSite("childy", 1, "子站Y", parent);

        // query 串需走 URI 模板直传（MockMvc param() 不进 getQueryString()，真实请求无此差异）
        mockMvc.perform(get("/portal/childy/service?obj=person"))
                .andExpect(status().isMovedPermanently())
                .andExpect(header().string("Location", "/portal/schy/childy/service?obj=person"));
    }

    @Test
    @DisplayName("指南页路由：存在且已发布 200；不存在/草稿 404；响应头带 Cache-Control")
    void guideItem_statusSemantics() throws Exception {
        Integer id = publishItem("S1", "转学办理", "person", "jw");
        mockMvc.perform(get("/portal/demo1/sv/{id}", id))
                .andExpect(status().isOk())
                .andExpect(header().string("Cache-Control", "max-age=300"));

        mockMvc.perform(get("/portal/demo1/sv/{id}", 999999))
                .andExpect(status().isNotFound());

        Integer draft = persistSvcItem(siteId, "S2", "草稿事项", ServiceItemStatusEnum.DRAFT).getId();
        mockMvc.perform(get("/portal/demo1/sv/{id}", draft))
                .andExpect(status().isNotFound());
    }

    // ===== M0 整页回退（§4.2/§4.3：缺可选模板的主题整页退 default，资产段同步退）=====

    @Test
    @DisplayName("M0: 无 service.html 的主题访问服务中心 → 200 且资产 URL 主题段为 default（防 default HTML 配他家 CSS）")
    void fallback_themeWithoutServiceTemplateFallsBackWholePage() throws Exception {
        publishItem("S1", "转学办理", "person", "jw");
        // t-demo-red 为测试夹具包：注册成功（必备四页齐全）但无 service.html/guide.html
        com.yunhai.cms.entity.CmsSite site = siteRepository.findById(siteId).orElseThrow(IllegalStateException::new);
        site.setTheme("t-demo-red");
        siteRepository.saveAndFlush(site);
        clearCaches();

        String html = body(mockMvc.perform(get("/portal/demo1/service"))
                .andExpect(status().isOk()).andReturn());
        assertThat(html).contains("服务中心").contains("转学办理");
        assertThat(html).contains("/assets/default/css/main.css");
        assertThat(html).doesNotContain("/assets/t-demo-red/");

        Integer id = serviceItemRepository.findBySiteIdAndItemCode(siteId, "S1")
                .orElseThrow(IllegalStateException::new).getId();
        String guideHtml = body(mockMvc.perform(get("/portal/demo1/sv/{id}", id))
                .andExpect(status().isOk()).andReturn());
        assertThat(guideHtml).contains("/assets/default/css/main.css");
        assertThat(guideHtml).doesNotContain("/assets/t-demo-red/");
    }

    // ===== 列表筛选与分页 URL 预生成（C-2，§5.4）=====

    @Test
    @DisplayName("三维筛选：计数正确、facet URL 后端预生成（勾选带参/取消去参），模板零拼 query")
    void serviceList_filtersAndFacetUrls() throws Exception {
        publishItem("S1", "转学办理", "person", "jw");
        publishItem("S2", "休学办理", "person", "jw");
        publishItem("S3", "法人年检", "legal", "jw");

        String html = body(mockMvc.perform(get("/portal/demo1/service"))
                .andExpect(status().isOk()).andReturn());
        assertThat(html).contains("个人").contains("法人").contains("教务服务");
        // 未勾选态 facet URL：带本维参数（page 归 1，无 page 参数）
        assertThat(html).contains("/portal/demo1/service?obj=person\">");
        assertThat(html).contains("/portal/demo1/service?obj=legal\">");

        // 勾选 obj=person 后：仅个人事项；取消链接回到无参基址；cat facet URL 保留 obj 维
        String filtered = body(mockMvc.perform(get("/portal/demo1/service")
                .param("obj", "person"))
                .andExpect(status().isOk()).andReturn());
        assertThat(filtered).contains("转学办理").contains("休学办理");
        assertThat(filtered).doesNotContain("法人年检");
        assertThat(filtered).contains("/portal/demo1/service\">");
        assertThat(filtered).contains("/portal/demo1/service?obj=person&cat=jw\">");
        assertThat(filtered).contains("清除筛选");
    }

    @Test
    @DisplayName("分页 URL 预生成：携带当前筛选与关键词（编码），第 2 页起带 page 参数")
    void serviceList_paginationUrlsCarryFilters() throws Exception {
        for (int i = 1; i <= 12; i++) {
            publishItem("S" + i, "事项" + String.format("%02d", i), "person", "jw");
        }
        String html = body(mockMvc.perform(get("/portal/demo1/service")
                .param("obj", "person").param("q", "事项"))
                .andExpect(status().isOk()).andReturn());
        // 第 2 页链接保留 obj + 编码后的 q，并追加 page=2（链接组装顺序 = obj, q, page）
        assertThat(html).contains("obj=person&amp;q=%E4%BA%8B%E9%A1%B9&amp;page=2");
        // 第 1 页（active）不带 page 参数
        assertThat(html).doesNotContain("page=1\"");
    }

    @Test
    @DisplayName("空结果与空站点：优雅空态不 500")
    void serviceList_emptyState() throws Exception {
        String html = body(mockMvc.perform(get("/portal/demo1/service"))
                .andExpect(status().isOk()).andReturn());
        assertThat(html).contains("暂未上架");
    }

    @Test
    @DisplayName("关键词命中标题与摘要；canonical 预生成；嵌套指南页路由可用")
    void serviceList_keywordCanonicalAndNestedGuide() throws Exception {
        Integer id = publishItem("S1", "转学办理", "person", "jw");
        com.yunhai.cms.svcitem.entity.CmsServiceItem item =
                serviceItemRepository.findById(id).orElseThrow(IllegalStateException::new);
        item.setSummary("适用于在校学生转学申请");
        serviceItemRepository.saveAndFlush(item);
        publishItem("S2", "休学办理", "person", "jw");

        String html = body(mockMvc.perform(get("/portal/demo1/service").param("q", "在校学生"))
                .andExpect(status().isOk()).andReturn());
        assertThat(html).as("关键词命中摘要").contains("转学办理").doesNotContain("休学办理");
        assertThat(html).contains("rel=\"canonical\"").contains("/portal/demo1/service");

        // 嵌套指南页路由（设计 §5.1 成对路由：此前只测了嵌套列表页）
        Integer parent = persistSite("schg", 1, "主站G").getId();
        Integer childId = persistSite("childg", 1, "子站G", parent).getId();
        com.yunhai.cms.svcitem.entity.CmsServiceItem childItem =
                persistSvcItem(childId, "C1", "子站事项", ServiceItemStatusEnum.PUBLISHED);
        childItem.setProcessHtml("<p>子站流程</p>");
        serviceItemRepository.saveAndFlush(childItem);
        assertThat(body(mockMvc.perform(get("/portal/schg/childg/sv/{id}", childItem.getId()))
                .andExpect(status().isOk()).andReturn()))
                .contains("子站事项").contains("子站流程").contains("rel=\"canonical\"");
    }

    @Test
    @DisplayName("指南页浏览量异步累加：HTTP 访问触发 + 计数器原子自增（不承诺即时，轮询等待）")
    void guideItem_viewCountIncrementsAsync() throws Exception {
        Integer id = publishItem("S1", "转学办理", "person", "jw");
        // ① HTTP 路径：指南页渲染成功并触发一次计数（异步）
        mockMvc.perform(get("/portal/demo1/sv/{id}", id)).andExpect(status().isOk());
        // ② 再补 4 次显式计数：把"异步累加链路是否工作"与"MockMvc 渲染耗时"解耦
        for (int i = 0; i < 4; i++) {
            svcItemQuery.countView(id);
        }

        int expected = 5;
        int viewCount = 0;
        // 轮询预算 30s：异步任务是 fire-and-forget（设计不承诺即时），且满载环境下取连接可能等待
        // Hikari 默认 connectionTimeout(30s)，故预算需覆盖该量级，避免把连接竞争误判为功能缺陷
        for (int i = 0; i < 300; i++) {
            viewCount = serviceItemRepository.findById(id).orElseThrow(IllegalStateException::new)
                    .getViewCount();
            if (viewCount >= expected) {
                break;
            }
            java.lang.Thread.sleep(100);
        }
        assertThat(viewCount).as("1 次指南页访问 + 4 次显式计数应累加为 %s", expected)
                .isGreaterThanOrEqualTo(expected);
    }

    // ===== 指南页装配（§5.3）=====

    @Test
    @DisplayName("指南页：富文本补上传基准、附件下载、关联栏目 url.category、关联事项、手填外链按钮")
    void guide_modelAssembly() throws Exception {
        Integer faqCat = persistCategory(siteId, 0, "FAQ", com.yunhai.cms.enums.CategoryTypeEnum.LIST).getId();
        com.yunhai.cms.svcitem.entity.CmsServiceItem item =
                serviceItemRepository.findById(publishItem("S1", "转学办理", "person", "jw")).orElseThrow(IllegalStateException::new);
        item.setProcessHtml("<p><img src=\"/cms/upload/cms/demo1/202609/a.jpg\"></p>");
        item.setFaqCategoryId(faqCat);
        item.setExtJson("{\"apply_url\":\"https://apply.example.com/zx\"}");
        serviceItemRepository.saveAndFlush(item);
        com.yunhai.cms.entity.CmsAttachment att = persistAttachment(siteId, "svc_item", "申请表.pdf");
        att.setRefId(item.getId());
        attachmentRepository.saveAndFlush(att);
        publishItem("S2", "休学办理", "person", "jw"); // 同类别关联事项

        String html = body(mockMvc.perform(get("/portal/demo1/sv/{id}", item.getId()))
                .andExpect(status().isOk()).andReturn());
        // 上传地址渲染期补基准（B-1 口径：MockMvc 请求派生基准 = http://localhost）
        assertThat(html).contains("src=\"http://localhost/cms/upload/cms/demo1/202609/a.jpg\"");
        // 附件与下载链接（webUrl 相对路径经 url.upload 补基准）
        assertThat(html).contains("申请表.pdf");
        assertThat(html).contains("http://localhost/cms/upload/cms/" + siteId + "/");
        // 关联栏目链接经 url.category 生成
        assertThat(html).contains("/portal/demo1/c/" + faqCat);
        // 关联事项（同类别已发布，排除自身）
        assertThat(html).contains("休学办理");
        // 我要办理三态①：手填外链优先
        assertThat(html).contains("https://apply.example.com/zx");
        assertThat(html).contains("我要办理");
    }

    @Test
    @DisplayName("我要办理三态：② svc_hall_base 生成 svhall 发起页 URL；③ 都没有 → 不渲染按钮")
    void applyUrl_generatedAndAbsentStates() throws Exception {
        // ② 未手填且站点配 svc_hall_base → 生成（尾斜杠归一）
        com.yunhai.cms.entity.CmsSite site = siteRepository.findById(siteId).orElseThrow(IllegalStateException::new);
        site.setConfigJson("{\"svc_hall_base\":\"https://svhall.example.com/\"}");
        siteRepository.saveAndFlush(site);
        clearCaches();
        Integer id = publishItem("S1", "转学办理", "person", "jw");
        String html = body(mockMvc.perform(get("/portal/demo1/sv/{id}", id))
                .andExpect(status().isOk()).andReturn());
        assertThat(html).contains("我要办理");
        assertThat(html).contains("https://svhall.example.com/#/apply?siteCode=demo1&amp;itemCode=S1");

        // ③ 都没有 → 按钮不渲染
        com.yunhai.cms.entity.CmsSite bare = siteRepository.findById(siteId).orElseThrow(IllegalStateException::new);
        bare.setConfigJson(null);
        siteRepository.saveAndFlush(bare);
        clearCaches();
        Integer id2 = publishItem("S2", "休学办理", "person", "jw");
        String html2 = body(mockMvc.perform(get("/portal/demo1/sv/{id}", id2))
                .andExpect(status().isOk()).andReturn());
        // 以按钮类名断言（模板源码注释含"我要办理"字样会随注释输出）
        assertThat(html2).doesNotContain("svc-apply-btn");
        assertThat(html2).doesNotContain("svhall.example.com");
    }
}