import crypto from 'node:crypto';
import { injectBeforeDocumentClosingBody } from './html-document-injection.mjs';

const PUBLIC_FILE_SHARE_SCRIPT = `(function(){
var root=document.querySelector('[data-mindspace-public-share]');
if(!root)return;
var shareButton=root.querySelector('[data-action="share"]');
var captureButton=root.querySelector('[data-action="capture"]');
var plazaButton=root.querySelector('[data-action="plaza"]');
var wechatButton=root.querySelector('[data-action="wechat-draft"]');
var dialog=root.querySelector('[data-mindspace-public-share-dialog]');
var wechatDialog=root.querySelector('[data-mindspace-wechat-dialog]');
var plazaCancel=root.querySelector('[data-action="plaza-cancel"]');
var plazaConfirm=root.querySelector('[data-action="plaza-confirm"]');
var plazaAlreadyClose=root.querySelector('[data-action="plaza-already-close"]');
var plazaSuccessClose=root.querySelector('[data-action="plaza-success-close"]');
var plazaErrorClose=root.querySelector('[data-action="plaza-error-close"]');
var plazaAlreadyLink=root.querySelector('[data-plaza-already-link]');
var plazaSuccessLink=root.querySelector('[data-plaza-success-link]');
var plazaViews={
  confirm:root.querySelector('[data-plaza-view="confirm"]'),
  loading:root.querySelector('[data-plaza-view="loading"]'),
  already:root.querySelector('[data-plaza-view="already"]'),
  success:root.querySelector('[data-plaza-view="success"]'),
  error:root.querySelector('[data-plaza-view="error"]')
};
var status=root.querySelector('small');
var timer=null;
var publishing=false;
var checking=false;
function setStatus(text,err,persist){
if(!status)return;
status.textContent=text||'';
status.classList.toggle('is-error',!!err);
if(timer)clearTimeout(timer);
if(text&&!persist)timer=setTimeout(function(){status.textContent='';status.classList.remove('is-error');},3200);
}
function cleanUrl(){var url=new URL(location.href);url.hash='';url.searchParams.delete('download');url.searchParams.delete('export');return url.toString();}
function withParam(url,key,value){var next=new URL(url);next.searchParams.set(key,value);return next.toString();}
function fallbackCopy(text){var ta=document.createElement('textarea');ta.value=text;ta.style.position='fixed';ta.style.left='-9999px';ta.style.opacity='0';document.body.appendChild(ta);ta.focus();ta.select();var ok=document.execCommand('copy');ta.remove();if(!ok)throw new Error('复制失败');}
async function copyText(text){if(navigator.clipboard&&navigator.clipboard.writeText){try{await navigator.clipboard.writeText(text);return;}catch(e){}}fallbackCopy(text);}
function workspaceRelativePath(){var parts=location.pathname.split('/').filter(Boolean);if(parts[0]==='MindSpace'&&parts.length>=3)return parts.slice(2).join('/');return'';}
function showPlazaView(name){Object.keys(plazaViews).forEach(function(key){var view=plazaViews[key];if(view)view.hidden=key!==name;});}
function openPlazaDialog(){if(!dialog)return;dialog.hidden=false;showPlazaView('loading');void refreshPlazaDialog();}
function closePlazaDialog(){if(dialog)dialog.hidden=true;showPlazaView('confirm');}
function apiErrorBody(payload){return payload&&(payload.error||payload)||{};}
function resolvePlazaUrl(payload){var body=apiErrorBody(payload);if(body.plaza_url)return body.plaza_url;var details=body.details;if(details&&details.plaza_url)return details.plaza_url;var postId=details&&(details.post_id||details.postId);if(!postId)return'';return location.origin.replace(/:\\d+$/,'')+':3001/plaza/p/'+encodeURIComponent(postId);}
function showAlreadyPublished(plazaUrl){showPlazaView('already');if(plazaAlreadyLink){if(plazaUrl){plazaAlreadyLink.href=plazaUrl;plazaAlreadyLink.hidden=false;}else{plazaAlreadyLink.hidden=true;}}}
async function refreshPlazaDialog(){
if(checking)return;
var relativePath=workspaceRelativePath();
if(!relativePath){showPlazaView('error');return;}
checking=true;
try{
var res=await fetch('/api/mindspace/v1/pages/quick-plaza-from-public-html/status?relative_path='+encodeURIComponent(relativePath),{credentials:'same-origin'});
var payload=await res.json().catch(function(){return{};});
if(!res.ok){
if(res.status===401)throw new Error('请先登录 MindSpace');
var errBody=apiErrorBody(payload);
throw new Error(errBody.message||'无法检查发布状态');
}
var data=payload.data||{};
if(data.published){showAlreadyPublished(data.plaza_url||resolvePlazaUrl({details:{post_id:data.post&&data.post.id}}));return;}
showPlazaView('confirm');
}catch(e){
showPlazaView('error');
setStatus(e&&e.message?e.message:'无法检查发布状态',true);
}
finally{checking=false;}
}
shareButton&&shareButton.addEventListener('click',async function(){var url=cleanUrl();var title=document.title||'MindSpace';try{if(navigator.share){await navigator.share({title:title,url:url});setStatus('已打开分享');return;}await copyText(url);setStatus('链接已复制');}catch(e){setStatus(e&&e.message?e.message:'分享失败',true);}});
captureButton&&captureButton.addEventListener('click',function(){setStatus('正在生成长图，请稍候');var link=document.createElement('a');link.href=withParam(cleanUrl(),'download','long-image');link.download='';document.body.appendChild(link);link.click();link.remove();});
plazaButton&&plazaButton.addEventListener('click',openPlazaDialog);
plazaCancel&&plazaCancel.addEventListener('click',closePlazaDialog);
plazaAlreadyClose&&plazaAlreadyClose.addEventListener('click',closePlazaDialog);
plazaSuccessClose&&plazaSuccessClose.addEventListener('click',closePlazaDialog);
plazaErrorClose&&plazaErrorClose.addEventListener('click',closePlazaDialog);
dialog&&dialog.addEventListener('click',function(event){if(event.target===dialog)closePlazaDialog();});
plazaConfirm&&plazaConfirm.addEventListener('click',async function(){
if(publishing)return;
var relativePath=workspaceRelativePath();
if(!relativePath){setStatus('无法识别页面路径',true);closePlazaDialog();return;}
publishing=true;
plazaConfirm.disabled=true;
showPlazaView('loading');
try{
var res=await fetch('/api/mindspace/v1/pages/quick-plaza-from-public-html',{method:'POST',credentials:'same-origin',headers:{'Content-Type':'application/json'},body:JSON.stringify({relative_path:relativePath})});
var payload=await res.json().catch(function(){return{};});
if(!res.ok){
if(res.status===401)throw new Error('请先登录 MindSpace');
var errBody=apiErrorBody(payload);
var plazaUrl=resolvePlazaUrl(payload);
if(errBody.code==='ALREADY_PUBLISHED'){showAlreadyPublished(plazaUrl);setStatus('该内容已在广场发布',false,true);return;}
throw new Error(errBody.message||'发布失败');
}
var data=payload.data||{};
var successUrl=data.plaza_url||resolvePlazaUrl({details:{post_id:data.post&&data.post.id}});
showPlazaView('success');
if(plazaSuccessLink&&successUrl){plazaSuccessLink.href=successUrl;plazaSuccessLink.hidden=false;}
else if(plazaSuccessLink){plazaSuccessLink.hidden=true;}
setStatus('发布成功',false,true);
if(successUrl)window.open(successUrl,'_blank','noopener,noreferrer');
}catch(e){
showPlazaView('error');
setStatus(e&&e.message?e.message:'发布失败',true);
}finally{publishing=false;plazaConfirm.disabled=false;}
});
if(wechatButton&&wechatDialog){
var wechatCancel=wechatDialog.querySelector('[data-action="wechat-cancel"]');
var wechatConfirm=wechatDialog.querySelector('[data-action="wechat-confirm"]');
var wechatSuccessClose=wechatDialog.querySelector('[data-action="wechat-success-close"]');
var wechatErrorClose=wechatDialog.querySelector('[data-action="wechat-error-close"]');
var wechatBlockedClose=wechatDialog.querySelector('[data-action="wechat-blocked-close"]');
var wechatForbiddenClose=wechatDialog.querySelector('[data-action="wechat-forbidden-close"]');
var wechatDraftId=wechatDialog.querySelector('[data-wechat-draft-id]');
var wechatHint=wechatDialog.querySelector('[data-wechat-view="confirm"] [data-wechat-hint]');
var wechatViews={
  confirm:wechatDialog.querySelector('[data-wechat-view="confirm"]'),
  loading:wechatDialog.querySelector('[data-wechat-view="loading"]'),
  success:wechatDialog.querySelector('[data-wechat-view="success"]'),
  error:wechatDialog.querySelector('[data-wechat-view="error"]'),
  blocked:wechatDialog.querySelector('[data-wechat-view="blocked"]'),
  forbidden:wechatDialog.querySelector('[data-wechat-view="forbidden"]')
};
var pushing=false;
var wechatChecking=false;
function isPageOwner(){return root.getAttribute('data-is-owner')==='true';}
function showWechatView(name){Object.keys(wechatViews).forEach(function(key){var view=wechatViews[key];if(view)view.hidden=key!==name;});}
function openWechatDialog(){
wechatDialog.hidden=false;
if(!isPageOwner()){showWechatView('forbidden');return;}
showWechatView('loading');
void refreshWechatDialog();
}
function closeWechatDialog(){wechatDialog.hidden=true;showWechatView('confirm');}
function setWechatHint(text){if(wechatHint)wechatHint.textContent=text||'';}
async function refreshWechatDialog(){
if(wechatChecking)return;
var relativePath=workspaceRelativePath();
if(!relativePath){showWechatView('error');setWechatHint('无法识别页面路径');return;}
wechatChecking=true;
try{
var res=await fetch('/api/mindspace/v1/pages/quick-wechat-draft-from-public-html/status?relative_path='+encodeURIComponent(relativePath),{credentials:'same-origin'});
var payload=await res.json().catch(function(){return{};});
if(!res.ok){
if(res.status===401)throw new Error('请先登录 MindSpace');
var errBody=apiErrorBody(payload);
throw new Error(errBody.message||'无法检查公众号草稿状态');
}
var data=payload.data||{};
if(!data.configured){showWechatView('blocked');setWechatHint('请先在 M 配置中绑定公众号 AppID 和 AppSecret。');return;}
var blockers=(data.validation&&data.validation.blockers)||[];
if(!data.canPush){showWechatView('error');setWechatHint(blockers[0]||'当前页面暂不符合推送要求');return;}
setWechatHint(data.pageTitle||'当前页面');
showWechatView('confirm');
}catch(e){
showWechatView('error');
setWechatHint(e&&e.message?e.message:'无法检查公众号草稿状态');
}finally{wechatChecking=false;}
}
wechatButton.addEventListener('click',openWechatDialog);
wechatCancel&&wechatCancel.addEventListener('click',closeWechatDialog);
wechatSuccessClose&&wechatSuccessClose.addEventListener('click',closeWechatDialog);
wechatErrorClose&&wechatErrorClose.addEventListener('click',closeWechatDialog);
wechatBlockedClose&&wechatBlockedClose.addEventListener('click',closeWechatDialog);
wechatForbiddenClose&&wechatForbiddenClose.addEventListener('click',closeWechatDialog);
wechatDialog.addEventListener('click',function(event){if(event.target===wechatDialog)closeWechatDialog();});
wechatConfirm&&wechatConfirm.addEventListener('click',async function(){
if(pushing)return;
var relativePath=workspaceRelativePath();
if(!relativePath){setStatus('无法识别页面路径',true);closeWechatDialog();return;}
pushing=true;
wechatConfirm.disabled=true;
showWechatView('loading');
setWechatHint('正在推送到公众号草稿箱…');
try{
var res=await fetch('/api/mindspace/v1/pages/quick-wechat-draft-from-public-html',{method:'POST',credentials:'same-origin',headers:{'Content-Type':'application/json'},body:JSON.stringify({relative_path:relativePath})});
var payload=await res.json().catch(function(){return{};});
if(!res.ok){
if(res.status===401)throw new Error('请先登录 MindSpace');
var errBody=apiErrorBody(payload);
throw new Error(errBody.message||'推送失败');
}
var data=payload.data||{};
showWechatView('success');
if(wechatDraftId){wechatDraftId.textContent=data.draftMediaId?'草稿 media_id：'+data.draftMediaId:'';}
setStatus('已推送到公众号草稿箱',false,true);
}catch(e){
showWechatView('error');
setWechatHint(e&&e.message?e.message:'推送失败');
}finally{pushing=false;wechatConfirm.disabled=false;}
});
}
})();`;

const PUBLIC_FILE_SHARE_SCRIPT_HASH = crypto
  .createHash('sha256')
  .update(PUBLIC_FILE_SHARE_SCRIPT)
  .digest('base64');

const PUBLIC_FILE_SHARE_WIDGET_BLOCK_PATTERN =
  /<style id="mindspace-public-share-style">[\s\S]*?<\/script>\s*/i;

export function stripPublicFileShareWidget(html) {
  return String(html ?? '').replace(PUBLIC_FILE_SHARE_WIDGET_BLOCK_PATTERN, '');
}

export function injectPublicFileShareButton(html, { isOwner = true } = {}) {
  let source = stripPublicFileShareWidget(html);
  if (!source) {
    return { html: source, scriptHashes: [] };
  }
  // REGRESSION GUARD: mindspace-public-owner-vs-visitor — the "发布 Plaza" entry mutates content
  // ownership (publishes the author's page under the visitor's own Plaza account), so it must only
  // render for the page owner. Anyone else opening this URL (share link, forwarded chat link) is a
  // visitor and must NOT see it. Everything else (长图 / 分享) stays available to all viewers.
  const plazaDialogMarkup = isOwner
    ? `  <div data-mindspace-public-share-dialog hidden>
    <div data-mindspace-public-share-dialog-panel role="dialog" aria-modal="true" aria-labelledby="mindspace-public-plaza-title">
      <div data-plaza-view="confirm">
        <h3 id="mindspace-public-plaza-title">发布到 Plaza</h3>
        <p>将把当前页面发布并推送到发现广场，确认继续？</p>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="plaza-cancel">取消</button>
          <button type="button" data-action="plaza-confirm">确认发布</button>
        </div>
      </div>
      <div data-plaza-view="loading" hidden>
        <h3>请稍候</h3>
        <p>正在检查发布状态…</p>
      </div>
      <div data-plaza-view="already" hidden>
        <h3>已在广场发布</h3>
        <p>该内容已发布到 Plaza，无法重复发布。如需重新发布，请先在广场删除原帖。</p>
        <a data-plaza-already-link data-mindspace-public-share-dialog-link href="#" target="_blank" rel="noopener noreferrer">查看已有帖子</a>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="plaza-already-close">知道了</button>
        </div>
      </div>
      <div data-plaza-view="success" hidden>
        <h3>发布成功</h3>
        <p>内容已推送到 Plaza 广场。</p>
        <a data-plaza-success-link data-mindspace-public-share-dialog-link href="#" target="_blank" rel="noopener noreferrer">查看 Plaza 帖子</a>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="plaza-success-close">关闭</button>
        </div>
      </div>
      <div data-plaza-view="error" hidden>
        <h3>操作失败</h3>
        <p>请稍后重试，或先登录 MindSpace。</p>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="plaza-error-close">关闭</button>
        </div>
      </div>
    </div>
  </div>
`
    : '';
  const plazaButtonMarkup = isOwner
    ? '    <button type="button" data-action="plaza">发布 Plaza</button>\n'
    : '';
  // REGRESSION GUARD: mindspace-public-wechat-visibility — the "公众号" entry is visible to all
  // viewers so visitors discover the feature, but only the page owner may push to WeChat draft.
  const wechatButtonMarkup = '    <button type="button" data-action="wechat-draft">公众号</button>\n';
  const wechatDialogMarkup = `  <div data-mindspace-wechat-dialog hidden>
    <div data-mindspace-public-share-dialog-panel role="dialog" aria-modal="true" aria-labelledby="mindspace-wechat-draft-title">
      <div data-wechat-view="confirm">
        <h3 id="mindspace-wechat-draft-title">推送到公众号草稿箱</h3>
        <p data-wechat-hint>将把当前页面按标准格式推送到你的公众号草稿箱，确认继续？</p>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="wechat-cancel">取消</button>
          <button type="button" data-action="wechat-confirm">确认推送</button>
        </div>
      </div>
      <div data-wechat-view="loading" hidden>
        <h3>请稍候</h3>
        <p data-wechat-hint>正在检查页面与公众号配置…</p>
      </div>
      <div data-wechat-view="blocked" hidden>
        <h3>尚未配置公众号</h3>
        <p>请先在 M 配置中绑定公众号 AppID 和 AppSecret。</p>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="wechat-blocked-close">知道了</button>
        </div>
      </div>
      <div data-wechat-view="forbidden" hidden>
        <h3>暂时无权限</h3>
        <p>仅页面作者可推送到公众号草稿箱。</p>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="wechat-forbidden-close">知道了</button>
        </div>
      </div>
      <div data-wechat-view="success" hidden>
        <h3>推送成功</h3>
        <p>内容已写入公众号草稿箱，请登录微信公众平台审阅后发表。</p>
        <p data-wechat-draft-id style="font-size:12px;opacity:.82;"></p>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="wechat-success-close">关闭</button>
        </div>
      </div>
      <div data-wechat-view="error" hidden>
        <h3>操作失败</h3>
        <p data-wechat-hint>请稍后重试，或先登录 MindSpace。</p>
        <div data-mindspace-public-share-dialog-actions">
          <button type="button" data-action="wechat-error-close">关闭</button>
        </div>
      </div>
    </div>
  </div>
`;
  const markup = `
<style id="mindspace-public-share-style">
  [data-mindspace-public-share]{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:2147483000;display:flex;flex-direction:column;align-items:flex-end;gap:6px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
  [data-mindspace-public-share] div[data-mindspace-public-share-actions]{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}
  [data-mindspace-public-share] button{border:0;border-radius:999px;padding:10px 15px;background:#2f6f57;color:#fff;font-size:14px;font-weight:700;box-shadow:0 8px 24px rgba(0,0,0,.18);cursor:pointer}
  [data-mindspace-public-share] button[data-action="capture"]{background:#8f6b2f}
  [data-mindspace-public-share] button[data-action="plaza"]{background:#5a4a7b}
  [data-mindspace-public-share] button[data-action="wechat-draft"]{background:#07c160}
  [data-mindspace-public-share] button:active{transform:translateY(1px)}
  [data-mindspace-public-share] button:disabled{opacity:.65;cursor:wait}
  [data-mindspace-public-share] small{min-height:18px;max-width:220px;border-radius:999px;padding:4px 9px;background:rgba(255,255,255,.92);color:#245845;font-size:12px;text-align:right;box-shadow:0 4px 14px rgba(0,0,0,.1)}
  [data-mindspace-public-share] small:empty{display:none}
  [data-mindspace-public-share] small.is-error{color:#8b2d20}
  [data-mindspace-public-share-dialog],[data-mindspace-wechat-dialog]{position:fixed;inset:0;z-index:2147483646;display:grid;place-items:center;padding:20px;background:rgba(7,12,10,.72);backdrop-filter:blur(8px)}
  [data-mindspace-public-share-dialog][hidden],[data-mindspace-wechat-dialog][hidden]{display:none!important}
  [data-mindspace-public-share-dialog-panel]{width:min(360px,100%);padding:24px;border-radius:22px;background:rgba(18,24,32,.96) !important;border:1px solid rgba(255,255,255,.12);box-shadow:0 24px 80px rgba(0,0,0,.38);text-align:center;color:#fff !important;color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
  [data-mindspace-public-share-dialog-panel] h3{margin:0 0 10px;font-size:18px;font-weight:600;color:#fff !important}
  [data-mindspace-public-share-dialog-panel] p{margin:0 0 16px;font-size:14px;line-height:1.5;color:rgba(255,255,255,.86) !important}
  [data-mindspace-public-share-dialog-panel] [data-plaza-view][hidden],[data-mindspace-public-share-dialog-panel] [data-wechat-view][hidden]{display:none!important}
  [data-mindspace-public-share-dialog-actions]{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
  [data-mindspace-public-share-dialog-actions] button{border-radius:999px;padding:8px 18px;font:inherit;font-size:14px;cursor:pointer;box-shadow:none}
  [data-mindspace-public-share-dialog-actions] [data-action="plaza-cancel"],[data-mindspace-public-share-dialog-actions] [data-action="plaza-already-close"],[data-mindspace-public-share-dialog-actions] [data-action="plaza-success-close"],[data-mindspace-public-share-dialog-actions] [data-action="plaza-error-close"],[data-mindspace-public-share-dialog-actions] [data-action="wechat-cancel"],[data-mindspace-public-share-dialog-actions] [data-action="wechat-success-close"],[data-mindspace-public-share-dialog-actions] [data-action="wechat-error-close"],[data-mindspace-public-share-dialog-actions] [data-action="wechat-blocked-close"],[data-mindspace-public-share-dialog-actions] [data-action="wechat-forbidden-close"]{border:1px solid rgba(255,255,255,.18) !important;background:rgba(255,255,255,.08) !important;color:#fff !important}
  [data-mindspace-public-share-dialog-actions] [data-action="plaza-confirm"],[data-mindspace-public-share-dialog-actions] [data-action="wechat-confirm"]{border:1px solid rgba(47,111,87,.35) !important;background:#2f6f57 !important;color:#fff !important;font-weight:600}
  [data-mindspace-public-share-dialog-link]{display:inline-block;margin:0 0 14px;font-size:14px;color:#8fd4b4 !important;text-decoration:underline}
  [data-mindspace-public-share-dialog-link][hidden]{display:none!important}
  @media(max-width:640px){[data-mindspace-public-share]{right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px))}[data-mindspace-public-share] button{padding:9px 13px;font-size:13px}}
</style>
<div data-mindspace-public-share data-is-owner="${isOwner ? 'true' : 'false'}">
${plazaDialogMarkup}${wechatDialogMarkup}  <small aria-live="polite"></small>
  <div data-mindspace-public-share-actions>
${wechatButtonMarkup}${plazaButtonMarkup}    <button type="button" data-action="capture">保存长图</button>
    <button type="button" data-action="share">公开分享</button>
  </div>
</div>
<script>${PUBLIC_FILE_SHARE_SCRIPT}</script>`;
  if (/<\/body>/i.test(source)) {
    return {
      html: injectBeforeDocumentClosingBody(source, markup),
      scriptHashes: [PUBLIC_FILE_SHARE_SCRIPT_HASH],
    };
  }
  return {
    html: `${source}${markup}`,
    scriptHashes: [PUBLIC_FILE_SHARE_SCRIPT_HASH],
  };
}

export const publicShareWidgetInternals = {
  PUBLIC_FILE_SHARE_SCRIPT_HASH,
  stripPublicFileShareWidget,
};