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{ load } from 'npm:cheerio@1.0.0';\nimport robotsParser from 'npm:robots-parser@3.0.1';\nimport { clean, listingURL, parseCards, parseDetail, parseDate, priceLabel, eventId, SourceError, type Card, type Event } from './source.ts';\nexport type SourceKey='sxodim'|'topbilet'|'kassir';\nexport const PROVIDERS=[\n {key:'sxodim',name:'Sxodim',origin:'https://sxodim.com',listing:()=>listingURL(),fallback:'https://sxodim.com/almaty'},\n {key:'topbilet',name:'Topbilet',origin:'https://topbilet.kz',listing:()=>'https://topbilet.kz/en/afisha'},\n {key:'kassir',name:'Kassir.kz',origin:'https://kassir.kz',listing:()=>'https://kassir.kz/en/almaty'}\n] as const;\nexport function providerFor(url:string){const u=new URL(url);const p=PROVIDERS.find(p=>p.origin===u.origin);if(!p)throw new SourceError('Unregistered source');return p;}\nexport function sourceName(url:string):string{return providerFor(url).name;}\nexport function canonicalURL(value:string,base:string):string{\n const u=new URL(value,base);const p=providerFor(u.href);\n if(p.origin!==new URL(base).origin||u.username||u.password)throw new SourceError('Source URL is outside allowed scope');\n const ok=p.key==='sxodim'?/^\\/almaty(?:\\/|$)/.test(u.pathname):p.key==='topbilet'?/^\\/(en|ru|kz)\\/(afisha|event\\/[^/]+)\\/?$/.test(u.pathname):/^\\/(en|ru|kz)\\/almaty(?:\\/show\\/[^/]+)?\\/?$/.test(u.pathname);\n if(!ok)throw new SourceError('Source path is outside allowed scope');\n // One language variant and no tracking query parameters for a performance URL.\n if(p.key!=='sxodim')u.pathname=u.pathname.replace(/^\\/(ru|kz)\\//,'/en/');\n if(u.pathname.includes('/event/')||u.pathname.includes('/show/'))u.search='';\n u.hash='';return u.href;\n}\nconst HEADERS={'User-Agent':'AlmatyExpatsEvents/1.1 (+https://t.me/almaty_expats)','Accept':'text/html,text/plain;q=0.9'};\nexport function robotsOutcome(status:number):'parse'|'missing'|'blocked'{return status===200?'parse':status===404||status===410?'missing':'blocked';}\nexport function sourceClient(){\n const policies=new Map>();\n const lastRequest=new Map(),gates=new Map>();\n async function request(url:string):Promise{\n const origin=new URL(url).origin;const signal=AbortSignal.timeout(7000);\n for(let i=0;i<4;i++){\n const r=await fetch(url,{headers:HEADERS,signal,redirect:'manual'});\n if(r.status>=300&&r.status<400&&r.headers.get('location')){const next=new URL(r.headers.get('location')!,url);await r.body?.cancel();if(next.origin!==origin)throw new SourceError('Cross-origin source redirect refused');url=next.href;continue;}\n return r;\n }\n throw new SourceError('Too many source redirects');\n }\n async function read(r:Response,max=2000000){\n const reader=r.body?.getReader();if(!reader)return '';let total=0,result='';const decoder=new TextDecoder();\n try{while(true){const {value,done}=await reader.read();if(done)break;total+=value.byteLength;if(total>max){await reader.cancel();throw new SourceError('Source exceeded response size limit');}result+=decoder.decode(value,{stream:true});}return result+decoder.decode();}finally{reader.releaseLock();}\n }\n return async(input:string):Promise=>{\n const p=providerFor(input),url=canonicalURL(input,p.origin);\n if(!policies.has(p.origin))policies.set(p.origin,(async()=>{\n const r=await request(p.origin+'/robots.txt');const outcome=robotsOutcome(r.status);\n if(outcome==='missing'){await r.body?.cancel();return null;}\n if(outcome==='blocked'){await r.body?.cancel();throw new SourceError(`${p.name}: robots check failed (${r.status})`);}\n const text=await read(r,512000);if(/^\\s*1)throw new SourceError(`${p.name}: crawl delay requires a slower source schedule`);\n const previous=gates.get(p.origin)||Promise.resolve();let release!:()=>void;\n const gate=new Promise(resolve=>{release=resolve;});gates.set(p.origin,gate);\n await previous;\n try{\n const wait=Math.max(0,(lastRequest.get(p.origin)||0)+Math.max(500,delay*1000)-Date.now());\n if(wait)await new Promise(resolve=>setTimeout(resolve,wait));\n lastRequest.set(p.origin,Date.now());\n const r=await request(url);if(!r.ok){await r.body?.cancel();throw new SourceError(`${p.name}: HTTP ${r.status}`);}\n return await read(r);\n }finally{release();}\n };\n}\nexport function listingCards(key:SourceKey,html:string):Card[]{\n if(key==='sxodim')return parseCards(html);\n const $=load(html),p=PROVIDERS.find(p=>p.key===key)!,seen=new Set(),cards:Card[]=[];\n const selector=key==='topbilet'?'a[property=\"url\"][href*=\"/event/\"]':'a[href*=\"/almaty/show/\"]';\n $(selector).each((_,el)=>{try{\n const a=$(el),url=canonicalURL(a.attr('href')!,p.origin);if(seen.has(url))return;\n const root=a.closest('[typeof=\"Event\"]');\n const title=clean(root.find('h2[property=\"name\"]').first().text())||clean(a.text())||'Event';\n // Ticket add-ons and transport-only products are not standalone city events.\n if(/трансфер|\\btransfer\\b|на все \\d+ дня/i.test(title))return;\n const city=clean(root.find('[property=\"location\"] [property=\"address\"]').first().text());\n if(key==='topbilet'&&city&&!/^(almaty|алматы|алма-ата)$/i.test(city))return;\n seen.add(url);cards.push({url,title:title.slice(0,250),category:'Event',info:''});\n }catch{/* Ignore unregistered links. */}});\n return cards.slice(0,200);\n}\nconst isAlmaty=(s:string)=>/^(almaty|алматы|алма-ата)$/i.test(clean(s));\nexport async function detailEvents(html:string,card:Card):Promise{\n const p=providerFor(card.url);\n if(p.key==='sxodim')return await parseDetail(html,card);\n const $=load(html);let title='',venue='',date='',offers:any=null,city='';\n if(p.key==='topbilet'){\n // Scope to the main event; recommended events elsewhere on the page must never leak in.\n const main=$('.event-info').first();if(!main.length)throw new SourceError('Topbilet: main event layout changed');\n title=clean(main.find('h1').text());\n 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