Created commands/create-database.js

scripts/commands/create-database.js

@@ -0,0 +1,63 @@
+const { db, file, parser, logger } = require('../core')
+const { program } = require('commander')
+const _ = require('lodash')
+
+const options = program
+  .option(
+    '--max-clusters <max-clusters>',
+    'Set maximum number of clusters',
+    parser.parseNumber,
+    200
+  )
+  .option('--channels <channels>', 'Set path to channels.xml file', 'sites/**/*.channels.xml')
+  .parse(process.argv)
+  .opts()
+
+const channels = []
+
+async function main() {
+  logger.info('Starting...')
+  logger.info(`Number of clusters: ${options.maxClusters}`)
+
+  await loadChannels()
+  await saveToDatabase()
+
+  logger.info('Done')
+}
+
+main()
+
+async function loadChannels() {
+  logger.info(`Loading channels...`)
+
+  const files = await file.list(options.channels)
+  for (const filepath of files) {
+    const items = await parser.parseChannels(filepath)
+    for (const item of items) {
+      item.filepath = filepath
+      channels.push(item)
+    }
+  }
+  logger.info(`Found ${channels.length} channels`)
+}
+
+async function saveToDatabase() {
+  logger.info('Saving to the database...')
+
+  await db.reset()
+  const chunks = split(_.shuffle(channels), options.maxClusters)
+  for (const [i, chunk] of chunks.entries()) {
+    for (const item of chunk) {
+      item.cluster_id = i + 1
+      await db.insert(item)
+    }
+  }
+}
+
+function split(arr, n) {
+  let result = []
+  for (let i = n; i > 0; i--) {
+    result.push(arr.splice(0, Math.ceil(arr.length / i)))
+  }
+  return result
+}