traxxx/src/entities.js

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'use strict';
const config = require('config');
const argv = require('./argv');
const knex = require('./knex');
const whereOr = require('./utils/where-or');
function curateEntity(entity, includeParameters = false) {
if (!entity) {
return null;
}
const curatedEntity = entity.id ? {
id: entity.id,
name: entity.name,
url: entity.url,
description: entity.description,
slug: entity.slug,
type: entity.type,
parameters: includeParameters ? entity.parameters : null,
parent: curateEntity(entity.parent),
} : {};
if (entity.children) {
curatedEntity.children = entity.children.map(child => curateEntity({
...child,
parent: curatedEntity.id ? curatedEntity : null,
}, includeParameters));
}
return curatedEntity;
}
async function curateEntities(entities, includeParameters) {
return Promise.all(entities.map(async entity => curateEntity(entity, includeParameters)));
}
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async function fetchIncludedEntities() {
const include = {
includeAll: !argv.networks && !argv.channels && !config.include?.networks && !config.include?.channels,
includedNetworks: argv.networks || (!argv.channels && config.include?.networks) || [],
includedChannels: argv.channels || (!argv.networks && config.include?.channels) || [],
excludedNetworks: argv.excludeNetworks || config.exclude?.networks || [],
excludedChannels: argv.excludeChannels || config.exclude?.channels || [],
};
const rawNetworks = await knex.raw(`
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WITH RECURSIVE channels AS (
/* select configured channels and networks */
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SELECT
entities.*
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FROM
entities
WHERE
CASE WHEN :includeAll
THEN
/* select all top level networks and independent channels */
entities.parent_id IS NULL
ELSE
((entities.slug = ANY(:includedNetworks)
AND entities.type = 'network')
OR (entities.slug = ANY(:includedChannels)
AND entities.type = 'channel'))
END
AND NOT (
(entities.slug = ANY(:excludedNetworks)
AND entities.type = 'network')
OR (entities.slug = ANY(:excludedChannels)
AND entities.type = 'channel'))
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UNION ALL
/* select recursive children of configured networks */
SELECT
entities.*
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FROM
entities
INNER JOIN
channels ON channels.id = entities.parent_id
WHERE
NOT ((entities.slug = ANY(:excludedNetworks)
AND entities.type = 'network')
OR (entities.slug = ANY(:excludedChannels)
AND entities.type = 'channel'))
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)
/* select recursive channels as children of networks */
SELECT
entities.*, json_agg(channels ORDER BY channels.id) as children
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FROM
channels
LEFT JOIN
entities ON entities.id = channels.parent_id
WHERE
channels.type = 'channel'
GROUP BY
entities.id
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`, include);
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const curatedNetworks = rawNetworks.rows.map(entity => curateEntity(entity, true));
return curatedNetworks;
}
async function fetchChannels(queryObject) {
const sites = await knex('sites')
.where(builder => whereOr(queryObject, 'sites', builder))
.select(
'sites.*',
'networks.name as network_name', 'networks.slug as network_slug', 'networks.url as network_url', 'networks.description as network_description', 'networks.parameters as network_parameters',
)
.leftJoin('networks', 'sites.network_id', 'networks.id')
.limit(100);
return curateEntities(sites);
}
async function fetchChannelsFromReleases() {
const sites = await knex('releases')
.select('site_id', '')
.leftJoin('sites', 'sites.id', 'releases.site_id')
.groupBy('sites.id')
.limit(100);
return curateEntities(sites);
}
module.exports = {
curateEntity,
curateEntities,
fetchIncludedEntities,
fetchChannels,
fetchChannelsFromReleases,
};