const logger = require('winston');
const db = require('../models');
const lbryApi = require('../helpers/lbryApi.js');
const publishHelpers = require('../helpers/publishHelpers.js');
const { publishing: { primaryClaimAddress, additionalClaimAddresses } } = require('../config/siteConfig.js');
const Sequelize = require('sequelize');
const Op = Sequelize.Op;

module.exports = {
  publish (publishParams, fileName, fileType) {
    return new Promise((resolve, reject) => {
      let publishResults, certificateId, channelName;
      // publish the file
      return lbryApi.publishClaim(publishParams)
        .then(tx => {
          logger.info(`Successfully published ${publishParams.name} ${fileName}`, tx);
          publishResults = tx;
          // get the channel information
          if (publishParams.channel_name) {
            logger.debug(`this claim was published in channel: ${publishParams.channel_name}`);
            return db.Channel.findOne({where: {channelName: publishParams.channel_name}});
          } else {
            logger.debug('this claim was not published in a channel');
            return null;
          }
        })
        .then(channel => {
        // set channel information
          certificateId = null;
          channelName = null;
          if (channel) {
            certificateId = channel.channelClaimId;
            channelName = channel.channelName;
          }
          logger.debug(`certificateId: ${certificateId}`);
        })
        .then(() => {
        // create the File record
          const fileRecord = {
            name       : publishParams.name,
            claimId    : publishResults.claim_id,
            title      : publishParams.metadata.title,
            description: publishParams.metadata.description,
            address    : publishParams.claim_address,
            outpoint   : `${publishResults.txid}:${publishResults.nout}`,
            height     : 0,
            fileName,
            filePath   : publishParams.file_path,
            fileType,
            nsfw       : publishParams.metadata.nsfw,
          };
          // create the Claim record
          const claimRecord = {
            name       : publishParams.name,
            claimId    : publishResults.claim_id,
            title      : publishParams.metadata.title,
            description: publishParams.metadata.description,
            address    : publishParams.claim_address,
            thumbnail  : publishParams.metadata.thumbnail,
            outpoint   : `${publishResults.txid}:${publishResults.nout}`,
            height     : 0,
            contentType: fileType,
            nsfw       : publishParams.metadata.nsfw,
            amount     : publishParams.bid,
            certificateId,
            channelName,
          };
          // upsert criteria
          const upsertCriteria = {
            name   : publishParams.name,
            claimId: publishResults.claim_id,
          };
          // upsert the records
          return Promise.all([db.upsert(db.File, fileRecord, upsertCriteria, 'File'), db.upsert(db.Claim, claimRecord, upsertCriteria, 'Claim')]);
        })
        .then(([file, claim]) => {
          logger.debug('File and Claim records successfully created');
          return Promise.all([file.setClaim(claim), claim.setFile(file)]);
        })
        .then(() => {
          logger.debug('File and Claim records successfully associated');
          resolve(publishResults); // resolve the promise with the result from lbryApi.publishClaim;
        })
        .catch(error => {
          logger.error('PUBLISH ERROR', error);
          publishHelpers.deleteTemporaryFile(publishParams.file_path); // delete the local file
          reject(error);
        });
    });
  },
  claimNameIsAvailable (name) {
    const claimAddresses = additionalClaimAddresses || [];
    claimAddresses.push(primaryClaimAddress);
    // find any records where the name is used
    return db.Claim
      .findAll({
        attributes: ['address'],
        where     : {
          name,
          address: {
            [Op.or]: claimAddresses,
          },
        },
      })
      .then(result => {
        if (result.length >= 1) {
          throw new Error('That claim is already in use');
        };
        return name;
      })
      .catch(error => {
        throw error;
      });
  },
  checkChannelAvailability (name) {
    return db.Channel
      .findAll({
        where: { channelName: name },
      })
      .then(result => {
        if (result.length >= 1) {
          throw new Error('That channel has already been claimed');
        }
        return name;
      })
      .catch(error => {
        throw error;
      });
  },
};