const util = require('util');
const utils = require('./utils');
const db = require("./db");
const dbhelper = require("./dbhelper");
const bchelper = require("./bchelper");
const log = require("./log");
const dblog = require("./dblog");
const bc = require('./blockchain');
const metamgr = require('./metamgr');
const C = require('./C');

class BoxOrder {

  constructor(orderDb, isNewOrder) {
    this.isNewOrder = isNewOrder;
    this.orderDb = orderDb;
  }

  init () {
    if (this.isNewOrder) {
      setTimeout(this.start.bind(this), utils.randRange(100, 1000));
    } else {
      setTimeout(this.start.bind(this), utils.randRange(1000, 3000));
    }
  }

  async start() {
    //支付
    await this.payment();
    //创建nft
    await this.mint();
  }

  async payment() {
    if (!this.isPaid()) {
      const getPrepareBlockNumber = () => {
        return this.orderDb['bc_pay_prepare_block_number'];
      };
      const setPrepareBlockNumber = async (logClass, blockNumber) => {
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_pay_prepare_block_number', blockNumber],
          ]
        );
      };
      const getSuccessBlockNumber = () => {
        return this.orderDb['bc_pay_success_block_number'];
      };
      const setSuccessBlockNumber = async (logClass, blockNumber) => {
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_pay_success_block_number', blockNumber],
          ]
        );
      };
      const getSyncCount = () => {
        return this.orderDb['bc_pay_count'];
      };

      const eventFilter = {
        boxId: this.getOrderId()
      };
      const methodArgs = [
        this.orderDb['order_id'],
        this.orderDb['type'],
        this.orderDb['buyer_address'],
        this.orderDb['price'],
        this.orderDb['payment_token_address'],
        this.orderDb['nonce'],
        this.orderDb['signature']
      ];
      const onSyncSuccess = async (logClass, event) => {
        const nowTime = utils.getUtcTime();
        const blockNumber = bchelper.extractEventBlockNumber(event);
        const txHash = bchelper.extractEventTxHash(event);
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_pay_count', this.orderDb['bc_pay_count'] + 1],
            ['bc_pay_time', nowTime],
            ['bc_pay_success_block_number', blockNumber],
            ['bc_pay_txhash', txHash],
          ]
        );
      };
      const onConfirmed = async (logClass) => {
        const nowTime = utils.getUtcTime();
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_paid', 1],
            ['bc_pay_confirm_time', nowTime]
          ]
        );
      };

      const exec = new bchelper.ContractExecutor();
      exec.instanceName = 'mallInstance';
      exec.suspend = this.suspend.bind(this);
      exec.getLogKey = this.getOrderId.bind(this);
      exec.getLogData = this.getOrderDb.bind(this);

      exec.getPrepareBlockNumber = getPrepareBlockNumber;
      exec.setPrepareBlockNumber = setPrepareBlockNumber;
      exec.getSuccessBlockNumber = getSuccessBlockNumber;
      exec.setSuccessBlockNumber = setSuccessBlockNumber;
      exec.getSyncCount = getSyncCount;

      exec.searchLogClass = 'order.search';
      exec.eventName = 'BEBoxPaid';
      exec.eventFilter = eventFilter;

      exec.syncLogClass = 'order.sync';
      exec.methodName = 'payForBoxWithSignature';
      exec.methodArgs = methodArgs;
      exec.syncDbLogClass = 'order.sync';

      exec.onSyncSuccess = onSyncSuccess;
      exec.onConfirmed = onConfirmed;
      exec.init();

      const ok = await exec.execute();
      if (!ok) {
        const logClass = 'payment';
        await this.suspend(logClass, 'payment error');
      }
    }
  }

  async mint() {
    const logClass = 'mint';
    for (let i = 1; i <= 3; ++i) {
      await this.internalMint(i);
    }
    await this.updateDbMustBeSuccess(
      logClass,
      [
        ['done', 1]
      ]);
    utils.emitEvent(C.REMOVE_PENDING_ORDER_EVENT, this.getOrderId());
  }

  async internalMint(idx) {
    const logClass = 'internalMint';
    if (!this.orderDb['bc_mint_itemid' + idx]) {
      return;
    }
    if (!this.isMinted(idx)) {
      const getPrepareBlockNumber = () => {
        return this.orderDb['bc_mint_prepare_block_number' + idx];
      };
      const setPrepareBlockNumber = async (logClass, blockNumber) => {
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_mint_prepare_block_number' + idx, blockNumber],
          ]
        );
      };
      const getSuccessBlockNumber = () => {
        return this.orderDb['bc_mint_success_block_number' + idx];
      };
      const setSuccessBlockNumber = async (logClass, blockNumber) => {
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_mint_success_block_number' + idx, blockNumber],
          ]
        );
      };
      const getSyncCount = () => {
        return this.orderDb['bc_mint_count' + idx];
      };

      const eventFilter = {
        tokenId: this.getTokenId(idx)
      };
      const methodArgs = [
        this.orderDb['buyer_address'],
        this.getTokenId(idx)
      ];
      const onSyncSuccess = async (logClass, event) => {
        const nowTime = utils.getUtcTime();
        const blockNumber = bchelper.extractEventBlockNumber(event);
        const txHash = bchelper.extractEventTxHash(event);
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_mint_count' + idx, this.orderDb['bc_mint_count' + idx] + 1],
            ['bc_mint_time' + idx, nowTime],
            ['bc_mint_success_block_number' + idx, blockNumber],
            ['bc_mint_txhash' + idx, txHash],
          ]
        );
      };
      const onConfirmed = async (logClass) => {
        const nowTime = utils.getUtcTime();
        await this.updateDbMustBeSuccess(
          logClass,
          [
            ['bc_minted' + idx, 1],
            ['bc_mint_confirm_time' + idx, nowTime]
          ]
        );
      };

      const exec = new bchelper.ContractExecutor();
      exec.instanceName = 'factoryInstance';
      exec.suspend = this.suspend.bind(this);
      exec.getLogKey = this.getOrderId.bind(this);
      exec.getLogData = this.getOrderDb.bind(this);

      exec.getPrepareBlockNumber = getPrepareBlockNumber;
      exec.setPrepareBlockNumber = setPrepareBlockNumber;
      exec.getSuccessBlockNumber = getSuccessBlockNumber;
      exec.setSuccessBlockNumber = setSuccessBlockNumber;
      exec.getSyncCount = getSyncCount;

      exec.searchLogClass = 'mint.search';
      exec.eventName = 'TokenMinted';
      exec.eventFilter = eventFilter;

      exec.syncLogClass = 'mint.sync';
      exec.methodName = this.getMintMethod(idx);
      exec.methodArgs = methodArgs;
      exec.syncDbLogClass = 'mint.sync';

      exec.onSyncSuccess = onSyncSuccess;
      exec.onConfirmed = onConfirmed;
      exec.init();
      const ok = await exec.execute();
      if (!ok) {
        const logClass = 'mint';
        await this.suspend(logClass, 'mint error');
      }
    }
    await this.dbMint(idx);
  }

  async dbMint(idx) {
    const logClass = 'dbMint';
    {
      const {err, row} = dbhelper.ormSelectOne(
        't_nft',
        [
          ['token_id', this.getTokenId(idx)]
        ]);
      if (err) {
        await this.suspend(logClass, err);
        return;
      }
      if (row) {
        if (row['owner_address'] != this.orderDb['buyer_address']) {
          await this.suspend(logClass, 'owner_address error');
          return;
        }
        return;
      }
    }
    {
        const nowTime = utils.getUtcTime();
        const fieldList = [
          ['token_id', this.getTokenId(idx)],
          ['token_type', this.orderDb['bc_mint_token_type' + idx]],
          ['item_id', this.orderDb['bc_mint_itemid' + idx]],
          ['game_id', this.orderDb['game_id']],
          ['owner_address', this.orderDb['buyer_address']],
          ['createtime', nowTime],
          ['modifytime', nowTime],
        ];
        const err = await dbhelper.insert(
          't_nft',
          fieldList);
        if (err) {
          log.error(util.format('%s insert nft table orderDb:%s fieldList:%s err:%s',
                                logClass,
                                utils.jsonEncode(this.orderDb),
                                utils.jsonEncode(fieldList),
                                err
                               )
                   );
          await this.suspend(logClass, err);
        } else {
          log.info(util.format('%s insert nft table orderDb:%s',
                               logClass,
                               utils.jsonEncode(this.orderDb),
                               utils.jsonEncode(fieldList)
                              )
                  );
        }
    }
  }

  async updateDbMustBeSuccess(logClass, fieldList) {
    const err = await dbhelper.update(
      't_box_order',
      [
        ['order_id', this.getOrderId()]
      ],
      fieldList);
    if (err) {
      log.error(util.format('%s updateDbMustBeSuccess orderDb:%s fieldList:%s err:%s',
                            logClass,
                            utils.jsonEncode(this.orderDb),
                            utils.jsonEncode(fieldList),
                            err
                           )
               );
      await this.suspend(logClass + ' updateDbMustBeSuccess ', err);
    } else {
      fieldList.forEach((val) => {
        const name = val[0];
        const value = val[1];
        this.orderDb[name] = value;
      });
      log.info(util.format('%s updateDbMustBeSuccess orderDb:%s',
                            logClass,
                            utils.jsonEncode(this.orderDb),
                            utils.jsonEncode(fieldList)
                           )
              );
    }
    return err;
  }

  async suspend(logClass, reason) {
    /*
      挂起等待人工处理
      为啥不抛出异常是因为：
      如果在调用接口的外部try catch的话，那么挂起操作产生的异常会被吞噬,这样非常危险!!!
      挂起的操作现在为无限等待不受外部try catch影响。
    */
    try {
      log.warning(util.format('%s suspend orderDb:%s reason:%s',
                              logClass,
                              utils.jsonEncode(this.orderDb),
                              reason
                             )
                 );
      await dbhelper.update(
        't_box_order',
        [
          ['order_id', this.getOrderId()]
        ],
        [
          ['suspend', 1],
          ['suspend_reason', '' + reason],
        ]);
      this.orderDb['suspend'] = 1;
      this.orderDb['suspend_reason'] = '' + reason;
      await dblog.addLog(
        'order.suspend',
        '',
        this.getOrderId(),
        utils.jsonEncode(this.getOrderDb()),
        '' + reason,
        logClass
        );
    } catch (err) {
      log.error(util.format('%s suspend orderDb:%s err:%s',
                            logClass,
                            utils.jsonEncode(this.orderDb),
                            err
                           )
               );
    }
    while (true) {
      await utils.sleep(1000 * 3600 * 24);
    }
  }

  getOrderDb() {
    return this.orderDb;
  }

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

  getTokenId(idx) {
    return this.orderDb['bc_mint_tokenid' + idx];
  }

  isPaid() {
    return this.orderDb['bc_paid'] != 0;
  }

  isMinted(idx) {
    return this.orderDb['bc_minted' + idx] != 0;
  }

  getMintMethod(idx) {
    switch (this.orderDb['bc_mint_token_type' + idx]) {
    case C.TOKEN_TYPE_HERO:
      {
        return 'mintHeroTo';
      }
      break;
    case C.TOKEN_TYPE_EQUIP:
      {
        return 'mintEquipTo';
      }
      break;
    case C.TOKEN_TYPE_CHIP:
      {
        return 'mintChipTo';
      }
      break;
    default:
      {
        return '';
        break;
      }
    }
  }

};

exports.BoxOrder = BoxOrder;