const util = require('util');
const utils = require('./utils');
const db = require("./db");
const log = require("./log");
const ordermgr = require('./ordermgr');
const boxrepairer = require('./boxrepairer');
const bc = require('./blockchain');
const C = require('./C');

class BoxOrder {

  constructor(orderDb, isNewOrder) {
    this.isNewOrder = isNewOrder;
    this.orderDb = orderDb;
    this.repairer = new boxrepairer.BoxRepairer(this);
  }

  init () {
    if (this.isNewOrder) {
      setTimeout(this.start.bind(this), 1000 * 0.1 + Math.floor(Math.random() * 100));
    } else {
      setTimeout(this.start.bind(this), 1000 * 1 + Math.floor(Math.random() * 1000 * 3));
    }
  }

  async start() {
    if (this.isPaid()) {
      //修复已经支付成功订单的t_box表关系
      await this.repairer.repairPaidOrder();
      return;
    }
    if (this.isExpired()) {
      //修复已过期订单的t_box表关系
      await this.repairer.repairExpiredOrder();
      return;
    }
    if (this.isFail()) {
      //修复支付失败的订单
      await this.repairFailOrder();
      return;
    }

    if (!this.isSynced()) {
      //查询
      let found = await this.bcSearch();
      if (!found) {
        //上链
        let ok = await this.bcSync();
        if (!ok) {
          ordermgr.removePendingOrder(this.getOrderId());
          return;
        }
      }
    }
    //等待确认支付成功
    await this.bcConfirm();
    ordermgr.removePendingOrder(this.getOrderId());
  }

  async bcSearch() {
    return true;
  }

  async bcSync() {
    const logClass = 'bcSync';
    let doSync = async () => {
      const result = await bc.mallInstance.methods.buyBoxWithSignature(
        this.orderDb['order_id'],
        this.orderDb['item_id'],
        this.orderDb['buyer_address'],
        this.orderDb['price'],
        this.orderDb['payment_token_address'],
        this.orderDb['nonce'],
        this.orderDb['signature']).send({gas: 1000000});
      return result;
    };
    while (true) {
      try {
        const result = doSync();
      } catch (e) {
        log.warning(util.format('%s end orderDb:%s err:s',
                                logClass,
                                JSON.stringify(this.orderDb),
                                e
                               )
                   );
      }
      await utils.sleep(1000 * 3 + Math.random() * 1000);
    }
  }

  async bcConfirm() {
    while (true) {
      await utils.sleep(1000 * 3);
    }
  }

  async getBoxDb(logClass) {
    let {err, row} = await db.execOneQuery('SELECT * FROM t_box where order_id=?',
                                           [
                                             this.getOrderId()
                                           ]);
    if (!row) {
      log.warning(util.format('%s box not found orderDb:%s',
                              logClass,
                              JSON.stringify(this.orderDb),
                             )
                 );
    }
    return {
      'err': err,
      'boxDb': row
    };
  }

  async setDone(logClass) {
    let err = await db.execScript('UPDATE t_box_order SET done=1 WHERE order_id=?',
                                  [
                                    this.getOrderId()
                                  ]);
    if (err) {
      log.error(util.format('%s setDoneErr orderDb:%s err:%s',
                            logClass,
                            JSON.stringify(this.orderDb),
                            err
                           )
               );
    } else {
      log.error(util.format('%s setDoneOk orderDb:%s',
                            logClass,
                            JSON.stringify(this.orderDb)
                           )
               );
    }
    return err;
  }

  async setBoxPaidState(logClass, boxDb) {
    let err = await db.execScript('UPDATE t_box SET state=? WHERE idx=?',
                                  [
                                    BOX_STATE_PAID,
                                    boxDb['idx']
                                  ]);
    if (err) {
      log.error(util.format('%s setBoxPaidState orderDb:%s boxDb:%s err:%s',
                            logClass,
                            JSON.stringify(this.orderDb),
                            JSON.stringify(boxDb),
                            err
                           )
               );
    } else {
      log.error(util.format('%s setBoxPaidState orderDb:%s boxDb:%s',
                            logClass,
                            JSON.stringify(this.orderDb),
                            JSON.stringify(boxDb),
                           )
               );
    }
    return err;
  }

  async setBoxOrderInvalid(logClass, boxDb) {
    let err = await db.execScript('UPDATE t_box SET order_valid=0 WHERE idx=?',
                                  [
                                    boxDb['idx']
                                  ]);
    if (err) {
      log.error(util.format('%s setBoxOrderInvalid orderDb:%s boxDb:%s err:%s',
                            logClass,
                            JSON.stringify(this.orderDb),
                            JSON.stringify(boxDb),
                            err
                           )
               );
    } else {
      log.error(util.format('%s setBoxOrderInvalid orderDb:%s boxDb:%s',
                            logClass,
                            JSON.stringify(this.orderDb),
                            JSON.stringify(boxDb),
                           )
               );
    }
    return err;
  }

  getOrderDb() {
    return this.orderDb;
  }

  getOrderId() {
    return this.orderDb['order_id'];
  }

  isExpired() {
    return this.orderDb['expired'];
  }

  isPaid() {
    return this.orderDb['state'] == ORDER_STATE_PAID;
  }

  isSynced() {
    return this.orderDb['bc_synced'] != 0;
  }

  isFail() {
    return this.isSynced() && this.orderDb['bc_result'] != BC_RESULT_OK;
  }

};

exports.BoxOrder = BoxOrder;