import { state } from "./render-intelligence-state.js?v=20260814e";
import { TEXT, create, detectViewerCountry, currentTranslationProvider, formatVerified, sectionItems, matchesFilters, makeCard, renderCalendar } from "./render-intelligence-core.js?v=20260817a";
import { renderExhibitions, renderPolicies, renderStandards, renderTrendNews, renderTrendSearchHub, trendItems } from "./render-intelligence-scenes.js?v=20260814i";
import { renderActivities } from "./render-intelligence-activities.js?v=20260814h";
import { renderPlatforms } from "./render-intelligence-platforms.js?v=20260817a";

function renderStats(data, container) {
  if (!container) return;
  container.innerHTML = "";
  const values = [
    ["新增权威源", `${data.source_success || 0}/${data.source_target || 0}`],
    ["总体源基线", data.total_source_baseline || 0],
    ["重点备货商机", data.summary?.calendar_featured || data.summary?.calendar_insights || 0],
    ["已核实展会", data.summary?.exhibitions || 0],
    ["政策与召回", data.summary?.policies || 0],
    ["重点销售平台", data.summary?.platforms || data.platforms?.length || 0],
    ["可参加活动", data.summary?.activities || data.activities?.length || 0],
  ];
  values.forEach(([label, value]) => {
    const node = create("div", "intelligence-stat");
    node.append(create("span", "", label), create("strong", "", String(value)));
    container.appendChild(node);
  });
}

function renderTabs(data, container, render) {
  if (!container) return;
  container.innerHTML = "";
  Object.entries(TEXT.tabs).forEach(([key, label]) => {
    const button = create("button", `intelligence-tab${state.activeSection === key ? " active" : ""}`, label);
    button.type = "button";
    button.setAttribute("role", "tab");
    button.setAttribute("aria-selected", String(state.activeSection === key));
    button.setAttribute("aria-controls", "intelligenceList");
    const count = key === "today"
      ? data.today?.length
      : (key === "calendar"
        ? (data.calendar_insights?.length || data.calendar?.length)
        : (key === "standards" ? ((data.standards?.length || 0) + trendItems(data).length) : data[key]?.length));
    button.appendChild(create("span", "intelligence-tab-count", String(count || 0)));
    button.addEventListener("click", () => {
      state.activeSection = key;
      render();
      state.onStateChange?.();
    });
    container.appendChild(button);
  });
}

function renderRegionOptions(data, select) {
  if (!select) return;
  const regionField = typeof select.closest === "function" ? select.closest("label") : null;
  if (regionField) regionField.hidden = state.activeSection === "calendar";
  const previous = state.region;
  select.innerHTML = "";
  if (state.activeSection === "calendar") {
    state.region = "";
    select.disabled = true;
    const calendarOption = create("option", "", "使用下方日历市场筛选");
    calendarOption.value = "";
    select.appendChild(calendarOption);
    return;
  }
  select.disabled = false;
  const sourceItems = state.activeSection === "today" ? (data.today || []) : (data[state.activeSection] || []);
  const regions = new Set(sourceItems.map((item) => item.region).filter(Boolean));
  const all = create("option", "", TEXT.allRegions);
  all.value = "";
  select.appendChild(all);
  [...regions].sort((a, b) => a.localeCompare(b, "zh-CN")).forEach((value) => {
    const option = create("option", "", value);
    option.value = value;
    select.appendChild(option);
  });
  select.value = regions.has(previous) ? previous : "";
  state.region = select.value;
}

function renderList(data, container) {
  if (!container) return;
  const filtered = sectionItems(data).filter(matchesFilters);
  container.innerHTML = "";
  ["calendar", "exhibitions", "policies", "standards", "platforms", "activities"].forEach((section) => {
    container.classList.toggle(`is-${section}`, state.activeSection === section);
  });
  container.classList.toggle("is-today", state.activeSection === "today");
  if (!filtered.length) {
    const empty = create("div", "intelligence-empty", TEXT.empty);
    container.appendChild(empty);
    return;
  }
  if (state.activeSection === "calendar") {
    renderCalendar(data, container);
    return;
  }
  if (state.activeSection === "today") {
    const header = create("section", "today-briefing");
    header.append(
      create("strong", "", `今天有 ${filtered.length} 件值得处理的事`),
      create("span", "", "按截止时间、经营相关性和风险动态排序；继续下滑可查看全部事项"),
    );
    container.appendChild(header);
  }
  if (state.activeSection === "exhibitions") {
    renderExhibitions(data, container);
    return;
  }
  if (state.activeSection === "policies") {
    renderPolicies(data, container);
    return;
  }
  if (state.activeSection === "standards") {
    renderStandards(data, container);
    return;
  }
  if (state.activeSection === "platforms") {
    renderPlatforms(data, container);
    return;
  }
  if (state.activeSection === "activities") {
    renderActivities(data.activities || [], container, currentTranslationProvider());
    return;
  }
  const visible = filtered;
  visible.forEach((item) => container.appendChild(makeCard(item)));
}

export function setIntelligenceSection(value) {
  if (value && Object.prototype.hasOwnProperty.call(TEXT.tabs, value)) state.activeSection = value;
}

export function getIntelligenceSection() {
  return state.activeSection;
}

export function renderIntelligence(data, options = {}) {
  state.currentData = data;
  if (!state.calendarYear) {
    state.calendarYear = Number(String(data.as_of_date || "").slice(0, 4));
    state.calendarMonth = 0;
  }
  state.onStateChange = options.onStateChange || null;
  const root = options.root || document.getElementById("intelligencePanel");
  if (!root || !data) return;

  const stats = root.querySelector("#intelligenceStats");
  const tabs = root.querySelector("#intelligenceTabs");
  const list = root.querySelector("#intelligenceList");
  const search = root.querySelector("#intelligenceSearch");
  const regionSelect = root.querySelector("#intelligenceRegion");
  const updated = root.querySelector("#intelligenceUpdatedAt");

  const rerender = () => {
    renderTabs(state.currentData, tabs, rerender);
    renderList(state.currentData, list);
  };
  state.activeIntelligenceRerender = rerender;

  renderStats(data, stats);
  renderRegionOptions(data, regionSelect);
  renderTabs(data, tabs, rerender);
  renderList(data, list);
  if (updated) updated.textContent = `核验时间：${formatVerified(data.generated_at)}`;

  if (search && !search.dataset.bound) {
    search.dataset.bound = "1";
    search.placeholder = TEXT.searchPlaceholder;
    search.addEventListener("input", (event) => {
      state.query = event.target.value;
      renderList(state.currentData, list);
    });
  }
  if (regionSelect && !regionSelect.dataset.bound) {
    regionSelect.dataset.bound = "1";
    regionSelect.addEventListener("change", (event) => {
      state.region = event.target.value;
      renderList(state.currentData, list);
    });
  }
  detectViewerCountry();
}

export async function shareIntelligence() {
  const shareData = {
    title: "家纺跨境情报 · 每日机会与风险提醒",
    text: "全球备货日历、家纺展会、跨境政策与趋势雷达",
    url: window.location.href,
  };
  try {
    if (navigator.share) {
      await navigator.share(shareData);
      return "已打开系统分享面板";
    }
    await navigator.clipboard.writeText(shareData.url);
    return "分享链接已复制，可粘贴到微信或企业微信";
  } catch (error) {
    if (error?.name === "AbortError") return "已取消分享";
    console.error("[家纺跨境情报] 分享失败:", error);
    throw error;
  }
}

state.renderList = renderList;