315 lines
10 KiB
JavaScript
315 lines
10 KiB
JavaScript
const fs = require('fs');
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const path = require('path');
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const Sequelize = require('sequelize');
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const basename = path.basename(module.filename);
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const config = require('config');
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const db = {};
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const logger = require('winston');
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const NO_CHANNEL = 'NO_CHANNEL';
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const NO_CLAIM = 'NO_CLAIM';
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const database = config.get('Database.Database');
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const username = config.get('Database.Username');
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const password = config.get('Database.Password');
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const sequelize = new Sequelize(database, username, password, {
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host : 'localhost',
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dialect: 'mysql',
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logging: false,
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pool : {
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max : 5,
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min : 0,
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idle : 10000,
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acquire: 10000,
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},
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});
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function sortResult (result, longId) {
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let claimIndex;
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let shortId = longId.substring(0, 1); // default sort id is the first letter
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let shortIdLength = 0;
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// find the index of this certificate
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claimIndex = result.findIndex(element => {
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return element.claimId === longId;
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});
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if (claimIndex < 0) { throw new Error('claimid not found in possible sorted list') }
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// get an array of all certificates with lower height
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let possibleMatches = result.slice(0, claimIndex);
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// remove certificates with the same prefixes until none are left.
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while (possibleMatches.length > 0) {
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shortIdLength += 1;
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shortId = longId.substring(0, shortIdLength);
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possibleMatches = possibleMatches.filter(element => {
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return (element.claimId.substring(0, shortIdLength) === shortId);
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});
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}
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// return the short Id
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logger.debug('short channel id ===', shortId);
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return shortId;
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}
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function getLongClaimIdFromShortClaimId (name, shortId) {
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return new Promise((resolve, reject) => {
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db
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.sequelize.query(`SELECT claimId FROM Claim WHERE name = '${name}' AND claimId LIKE '${shortId}%' ORDER BY height ASC LIMIT 1;`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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return resolve(NO_CLAIM);
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default: // note results must be sorted
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return resolve(result[0].claimId);
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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}
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function getTopFreeClaimIdByClaimName (name) {
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return new Promise((resolve, reject) => {
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db
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.sequelize.query(`SELECT claimId FROM Claim WHERE name = '${name}' ORDER BY effectiveAmount DESC, height ASC LIMIT 1`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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logger.debug('getTopFreeClaimIdByClaimName result:', result);
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switch (result.length) {
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case 0:
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return resolve(NO_CLAIM);
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default:
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return resolve(result[0].claimId);
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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};
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function getLongChannelIdFromShortChannelId (channelName, channelId) {
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return new Promise((resolve, reject) => {
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db
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.sequelize.query(`SELECT claimId, height FROM Certificate WHERE name = '${channelName}' AND claimId LIKE '${channelId}%' ORDER BY height ASC LIMIT 1;`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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return resolve(NO_CHANNEL);
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default: // note results must be sorted
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return resolve(result[0].claimId);
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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}
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function getLongChannelIdFromChannelName (channelName) {
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logger.debug(`getLongChannelIdFromChannelName(${channelName})`);
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return new Promise((resolve, reject) => {
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db
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.sequelize.query(`SELECT claimId, amount, height FROM Certificate WHERE name = '${channelName}' ORDER BY effectiveAmount DESC, height ASC LIMIT 1;`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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return resolve(NO_CHANNEL);
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default:
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return resolve(result[0].claimId);
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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}
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sequelize
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.authenticate()
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.then(() => {
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logger.info('Sequelize has established mysql connection successfully.');
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})
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.catch(err => {
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logger.error('Sequelize was unable to connect to the database:', err);
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});
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fs
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.readdirSync(__dirname)
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.filter(file => {
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return (file.indexOf('.') !== 0 && file !== basename && file.slice(-3) === '.js');
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})
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.forEach(file => {
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const model = sequelize['import'](path.join(__dirname, file));
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db[model.name] = model;
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});
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Object.keys(db).forEach(modelName => {
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if (db[modelName].associate) {
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logger.info('Associating model:', modelName);
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db[modelName].associate(db);
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}
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});
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db.sequelize = sequelize;
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db.Sequelize = Sequelize;
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db['upsert'] = (Model, values, condition, tableName) => {
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return Model
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.findOne({ where: condition })
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.then(function (obj) {
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if (obj) { // update
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logger.debug(`updating "${values.name}" "${values.claimId}" in db.${tableName}`);
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return obj.update(values);
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} else { // insert
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logger.debug(`creating "${values.name}" "${values.claimId}" in db.${tableName}`);
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return Model.create(values);
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}
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})
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.catch(function (error) {
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logger.error('Sequelize findOne error', error);
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});
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};
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db['getTrendingClaims'] = (startDate) => {
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return db.sequelize.query(`SELECT COUNT(*), File.* FROM Request LEFT JOIN File ON Request.FileId = File.id WHERE FileId IS NOT NULL AND nsfw != 1 AND trendingEligible = 1 AND Request.createdAt > "${startDate}" GROUP BY FileId ORDER BY COUNT(*) DESC LIMIT 25;`, { type: db.sequelize.QueryTypes.SELECT });
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};
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db['getRecentClaims'] = () => {
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return db.sequelize.query(`SELECT * FROM File WHERE nsfw != 1 AND trendingEligible = 1 ORDER BY createdAt DESC LIMIT 25;`, { type: db.sequelize.QueryTypes.SELECT });
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};
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db['getShortClaimIdFromLongClaimId'] = (claimId, claimName) => {
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return new Promise((resolve, reject) => {
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logger.debug('finding short channel id');
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db
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.sequelize.query(`SELECT claimId, height FROM Claim WHERE name = '${claimName}' ORDER BY height;`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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throw new Error('That is an invalid claim name');
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default:
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return resolve(sortResult(result, claimId));
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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};
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db['getShortChannelIdFromLongChannelId'] = (longChannelId, channelName) => {
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return new Promise((resolve, reject) => {
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logger.debug(`finding short channel id for ${longChannelId} ${channelName}`);
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db
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.sequelize.query(`SELECT claimId, height FROM Certificate WHERE name = '${channelName}' ORDER BY height;`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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throw new Error('That is an invalid channel name');
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default:
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return resolve(sortResult(result, longChannelId));
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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};
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db['getAllFreeClaims'] = (name) => {
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return new Promise((resolve, reject) => {
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db
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.sequelize.query(`SELECT name, claimId, outpoint, height, address FROM Claim WHERE name = '${name}' ORDER BY amount DESC, height ASC`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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return resolve(null);
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default:
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return resolve(result);
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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};
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db['resolveClaim'] = (name, claimId) => {
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return new Promise((resolve, reject) => {
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db
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.sequelize.query(`SELECT name, claimId, outpoint, height, address, title, description, thumbnail, certificateId, channelName FROM Claim WHERE name = '${name}' AND claimId = '${claimId}'`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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return resolve(null);
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case 1:
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return resolve(result[0]);
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default:
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throw new Error('more than one entry matches that name and claimID');
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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};
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db['getClaimIdByLongChannelId'] = (channelId, claimName) => {
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return new Promise((resolve, reject) => {
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logger.debug(`finding claim id for claim "${claimName}" from channel "${channelId}"`);
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db
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.sequelize.query(`SELECT claimId FROM Claim WHERE name = '${claimName}' AND certificateId = '${channelId}' LIMIT 1;`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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return resolve(NO_CLAIM);
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default:
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return resolve(result[0].claimId);
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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};
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db['getAllChannelClaims'] = (channelId) => {
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return new Promise((resolve, reject) => {
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logger.debug(`finding all claims in channel "${channelId}"`);
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db
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.sequelize.query(`SELECT name, claimId, outpoint, height, address, contentType, title, description, license, thumbnail FROM Claim WHERE certificateId = '${channelId}' ORDER BY height DESC;`, { type: db.sequelize.QueryTypes.SELECT })
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.then(result => {
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switch (result.length) {
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case 0:
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return resolve(null);
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default:
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return resolve(result);
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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};
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db['getLongClaimId'] = (claimName, claimId) => {
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logger.debug(`getLongClaimId(${claimName}, ${claimId})`);
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if (claimId && (claimId.length === 40)) { // if a full claim id is provided
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return new Promise((resolve, reject) => resolve(claimId));
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} else if (claimId && claimId.length < 40) {
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return getLongClaimIdFromShortClaimId(claimName, claimId); // if a short claim id is provided
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} else {
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return getTopFreeClaimIdByClaimName(claimName); // if no claim id is provided
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}
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};
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db['getLongChannelId'] = (channelName, channelId) => {
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logger.debug(`getLongChannelId (${channelName}, ${channelId})`);
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if (channelId && (channelId.length === 40)) { // if a full channel id is provided
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return new Promise((resolve, reject) => resolve(channelId));
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} else if (channelId && channelId.length < 40) { // if a short channel id is provided
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return getLongChannelIdFromShortChannelId(channelName, channelId);
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} else {
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return getLongChannelIdFromChannelName(channelName); // if no channel id provided
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}
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};
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module.exports = db;
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