Add:Parse abmetadata metadata.abs file, save metadata.abs on all audiobook insert/update

server/utils/abmetadataGenerator.js

@@ -45,4 +45,56 @@ function generate(audiobook, outputPath) {
     return false
   })
 }
-module.exports.generate = generate
+module.exports.generate = generate
+
+function parseAbMetadataText(text) {
+  if (!text) return null
+  var lines = text.split(/\r?\n/)
+
+  // Check first line and get abmetadata version number
+  var firstLine = lines.shift().toLowerCase()
+  if (!firstLine.startsWith(';abmetadata')) {
+    Logger.error(`Invalid abmetadata file first line is not ;abmetadata "${firstLine}"`)
+    return null
+  }
+  var abmetadataVersion = Number(firstLine.replace(';abmetadata', '').trim())
+  if (isNaN(abmetadataVersion)) {
+    Logger.warn(`Invalid abmetadata version ${abmetadataVersion} - using 1`)
+    abmetadataVersion = 1
+  }
+
+  // Remove comments and empty lines
+  const ignoreFirstChars = [' ', '#', ';'] // Ignore any line starting with the following
+  lines = lines.filter(line => !!line.trim() && !ignoreFirstChars.includes(line[0]))
+
+  // Get lines that map to book details (all lines before the first chapter section)
+  var firstSectionLine = lines.findIndex(l => l.startsWith('['))
+  var detailLines = firstSectionLine > 0 ? lines.slice(0, firstSectionLine) : lines
+
+  // Put valid book detail values into map
+  const bookDetails = {}
+  for (let i = 0; i < detailLines.length; i++) {
+    var line = detailLines[i]
+    var keyValue = line.split('=')
+    if (keyValue.length < 2) {
+      Logger.warn('abmetadata invalid line has no =', line)
+    } else if (!bookKeyMap[keyValue[0].trim()]) {
+      Logger.warn(`abmetadata key "${keyValue[0].trim()}" is not a valid book detail key`)
+    } else {
+      var key = keyValue[0].trim()
+      bookDetails[key] = keyValue[1].trim()
+
+      // Genres convert to array of strings
+      if (key === 'genres' && bookDetails[key]) {
+        bookDetails[key] = bookDetails[key].split(',').map(genre => genre.trim())
+      }
+    }
+  }
+
+  // TODO: Chapter support
+
+  return {
+    book: bookDetails
+  }
+}
+module.exports.parse = parseAbMetadataText