FROM node:20-slim

WORKDIR /app

COPY frontend/package*.json ./
RUN npm ci --ignore-scripts

COPY frontend/ .

RUN npm run build

# adapter-static outputs to build/
EXPOSE 80

CMD ["node", "-e", "\
const h=require('http'),fs=require('fs'),url=require('url'),path=require('path');\
const root='build';\
const types={'/':'application/json','js':'application/javascript','css':'text/css','html':'text/html','json':'application/json','svg':'image/svg+xml','png':'image/png','jpg':'image/jpeg','jpeg':'image/jpeg','ico':'image/x-icon','woff2':'font/woff2','woff':'font/woff','ttf':'font/ttf','otf':'font/otf','map':'application/json'};\
h.createServer((req,res)=>{const p=url.parse(req.url||'/').pathname||'/';const fp=path.join(root,p==='/'?'/index.html':p);try{const s=fs.statSync(fp);if(s.isDirectory()){fs.readFile(path.join(fp,'index.html'),'utf8',(e,d)=>{res.writeHead(200,{'Content-Type':'text/html'});res.end(d||'<h1>OK</h1>')})}else{const ext=path.extname(fp).slice(1);res.writeHead(200,{'Content-Type':types[ext]||'application/octet-stream'});fs.createReadStream(fp).pipe(res)}}catch(e){res.writeHead(404).end('Not found')}}).listen(80);\
console.log('frontend static build on :80');\
"]