#!/usr/bin/env python3
"""Minimal JSON-RPC client for the installed VCC Plus public STDIO MCP helper.
No grant contents, private sockets, memory mutation or emulator internals used.
"""
import json,subprocess,sys
from pathlib import Path
HELPER='/Applications/VCC Plus.app/Contents/Helpers/vcc-mcp'
class VCC:
    def __init__(self,grant):
        self.p=subprocess.Popen([HELPER,'--grant',str(grant)],stdin=subprocess.PIPE,stdout=subprocess.PIPE,stderr=subprocess.PIPE,text=True,bufsize=1)
        self.i=0
        self.request('initialize',{'protocolVersion':'2024-11-05','capabilities':{},'clientInfo':{'name':'capital-quiz-tests','version':'1.0'}})
        self.p.stdin.write(json.dumps({'jsonrpc':'2.0','method':'notifications/initialized'})+'\n');self.p.stdin.flush()
    def request(self,method,params):
        self.i+=1
        self.p.stdin.write(json.dumps({'jsonrpc':'2.0','id':self.i,'method':method,'params':params})+'\n');self.p.stdin.flush()
        while True:
            line=self.p.stdout.readline()
            if not line:raise RuntimeError(self.p.stderr.read())
            reply=json.loads(line)
            if reply.get('id')==self.i:
                if 'error' in reply:raise RuntimeError(reply['error'])
                return reply['result']
    def call(self,name,args=None):
        r=self.request('tools/call',{'name':name,'arguments':args or {}})
        for b in r.get('content',[]):
            if b.get('type')=='text':
                try:return json.loads(b['text'])
                except ValueError:pass
        return r
    def close(self):
        self.p.stdin.close();self.p.terminate();self.p.wait()
if __name__=='__main__':
    v=VCC(sys.argv[1])
    try:
        if len(sys.argv)<3:result=v.request('tools/list',{})
        else:result=v.call(sys.argv[2],json.loads(sys.argv[3]) if len(sys.argv)>3 else {})
        print(json.dumps(result,indent=2))
    finally:v.close()