@Description("这是调用BDLedger的示例合约")
@Permission("Ledger")
contract LedgerExample{
  //{"ip":"39.108.56.240","port":18091}
  function onCreate(){
    var arg = {
      "ip":"39.108.56.240","port":18091};
    Global.client = LedgerUtil.getClient(arg);
  }
  @Description("参数示例：{\"ip\":\"39.108.56.240\",\"port\":18091}")
  export function connect(arg){
    arg = JSON.parse(arg);
    Global.client = LedgerUtil.getClient(arg);
    return Global.client.clientVersionSync().getVersion();
  }
  @Description("无需参数")
  export function getLedgers(arg){
    return Global.client.getLedgersSync().toString();
  }
  @Description("参数为账本名称")
  export function createLedgers(arg){
    return Global.client.createLedgerSync(arg);
  }
  //{"ledger":"testCHQ","from":"0123456789012345678901234567890123456789","to":"0123456789012345678901234567890123456789","data":"hello"}
  @Description("参数示例:{\"ledger\":\"testCHQ\",\"from\":\"0123456789012345678901234567890123456789\",\"to\":\"0123456789012345678901234567890123456789\",\"data\":\"hello\"}")
  export function sendMessage(arg){
    arg = JSON.parse(arg);
    var ret = LedgerUtil.sendMessage(Global.client,arg);
    return ret;
  }
  @Description("参数示例:{\"ledger\":\"testCHQ\",\"hash\":\"369b6a726e47b17caf53f19c24a18c25cfa3398a\"}")
  export function queryHash(arg){
    arg = JSON.parse(arg);
    return JSON.stringify(LedgerUtil.queryByHash(Global.client,arg));
  }
  //http形式调用：http://contract.internetapi.cn/SCIDE/CMManager?action=queryDataByHash&hash=xxxx
  //不加则为默认账本，也可加账本名作为参数：http://contract.internetapi.cn/SCIDE/CMManager?action=queryDataByHash&ledger=xxxx&hash=xxxx
}