import {Client} from '@modelcontextprotocol/sdk/client/index.js';
import {StreamableHTTPClientTransport} from '@modelcontextprotocol/sdk/client/streamableHttp.js';
import {randomUUID} from 'node:crypto';
import {fileURLToPath} from 'node:url';
import {resolve} from 'node:path';
export function assertStagingTarget(value){
 const url=new URL(value);
 if(!['http:','https:'].includes(url.protocol)||url.username||url.password||url.pathname!=='/api/mcp'||url.search||url.hash||url.hostname==='mega.dash.apphub.co.za')throw Error('A separate staging MCP URL is required for mutation checks');
 return url;
}
async function main(){
 const url=assertStagingTarget(process.env.MEGA_MCP_STAGING_URL||'');
 if(!process.env.MEGA_MCP_TOKEN||!process.env.MEGA_MCP_STAGING_SITE||!process.env.MEGA_MCP_STAGING_SUPPLIER)throw Error('Set staging token, fixture site and supplier');
 const client=new Client({name:'mega-staging-smoke',version:'1'});
 await client.connect(new StreamableHTTPClientTransport(url,{requestInit:{headers:{Authorization:`Bearer ${process.env.MEGA_MCP_TOKEN}`}}}));
 const checks=[];
 const call=async(name,args)=>{
  const result=await client.callTool({name,arguments:args},undefined,{timeout:240000});
  if(result.isError)throw Error(`Staging tool ${name} failed`);
  const content=result.content.find(c=>c.type==='text');return JSON.parse(content.text);
 };
 try{
  const names=(await client.listTools()).tools.map(t=>t.name);
  if(names.some(n=>/delete|remove|clear_all/.test(n)))throw Error('Destructive tool discovered');checks.push('no destructive tools');
  const input={operationId:randomUUID(),site:process.env.MEGA_MCP_STAGING_SITE,supplierId:process.env.MEGA_MCP_STAGING_SUPPLIER,number:`MCP-STAGING-${Date.now()}`,items:[{description:'MCP staging fixture',qty:2,rate:10,vat_percent:15,unit:'each'}]};
  const created=await call('create_purchase_order',input);const repeat=await call('create_purchase_order',input);
  if(created.result.id!==repeat.result.id)throw Error('Operation retry duplicated the order');checks.push('PO create and retry');
  const detail=await call('get_purchase_order_detail',{id:created.result.id});
  if(detail.po.total_value!==23||detail.items.length!==1)throw Error('PO totals or line count mismatch');checks.push('PO totals');
  await call('update_purchase_order_item',{operationId:randomUUID(),id:created.result.id,itemId:created.result.itemIds[0],item:{description:'MCP staging fixture',qty:3,rate:10,vat_percent:15,unit:'each'}});checks.push('PO edit');
  await call('set_purchase_order_verification',{operationId:randomUUID(),id:created.result.id,verified:true});checks.push('PO verification');
  console.log(JSON.stringify({checkedAt:new Date().toISOString(),origin:url.origin,checks,status:'passed',scope:'PO create/edit/verification; document/matching/posting require staged source fixtures'},null,2));
 }finally{await client.close();}
}
if(process.argv[1]&&resolve(process.argv[1])===fileURLToPath(import.meta.url))main().catch(()=>{console.error('Staging smoke failed; check isolated fixtures and MCP setup');process.exitCode=1;});