function isPlainObject(value) {
  return !!value && typeof value === "object" && !Array.isArray(value)
}

function normalizePosition(value) {
  var next = String(value || "").trim()
  return /^(top|bottom|left|right)$/.test(next) ? next : "top"
}

function entrySettings(entry) {
  if (!isPlainObject(entry)) return {}
  var copy = {}
  for (var key in entry) {
    if (key === "id") continue
    copy[key] = entry[key]
  }
  return copy
}

function entryId(entry) {
  if (typeof entry === "string") return entry
  if (isPlainObject(entry)) {
    var id = entry["id"]
    if (id !== undefined && id !== null && String(id) !== "") return String(id)
  }
  return ""
}

function pinTrayToInner(entries, section) {
  var trayEntry = null
  var result = []
  var values = Array.isArray(entries) ? entries : []
  for (var i = 0; i < values.length; i++) {
    if (entryId(values[i]) === "omarchy.tray") trayEntry = values[i]
    else result.push(values[i])
  }
  if (trayEntry) {
    if (section === "right") result.unshift(trayEntry)
    else result.push(trayEntry)
  }
  return result
}

function moduleString(entry, key, fallback) {
  var settings = entrySettings(entry)
  var value = settings[key]
  return value === undefined || value === null ? fallback : String(value)
}

function entryIndex(entries, name) {
  if (!Array.isArray(entries)) return -1
  for (var i = 0; i < entries.length; i++) {
    if (entryId(entries[i]) === name) return i
  }
  return -1
}

function entriesBefore(entries, name) {
  var index = entryIndex(entries, name)
  return index <= 0 ? [] : entries.slice(0, index)
}

function entriesAfter(entries, name) {
  var index = entryIndex(entries, name)
  return index === -1 ? [] : entries.slice(index + 1)
}

function expandPath(value, home) {
  var path = String(value || "")
  if (path === "") return ""
  if (path.indexOf("~/") === 0) return home + path.substring(1)
  if (path.indexOf("$HOME/") === 0) return home + path.substring(5)
  return path
}

function customModuleSafeName(name) {
  var value = String(name || "")
  return value !== "" && value.indexOf("..") === -1 && value[0] !== "/"
}

function customModuleType(entry) {
  var settings = entrySettings(entry)
  var type = String(settings.type || "")
  if (type) return type
  if (settings.exec) return "command"
  if (settings.source) return "qml"
  return ""
}

function customModulePath(entry, home, configDir) {
  var settings = entrySettings(entry)
  var name = entryId(entry)
  var source = settings.source ? expandPath(settings.source, home) : ""
  if (!source && customModuleSafeName(name))
    source = String(configDir || "") + "/bar/modules/" + String(name) + ".qml"
  return source
}

if (typeof module !== "undefined") {
  module.exports = {
    normalizePosition: normalizePosition,
    entrySettings: entrySettings,
    entryId: entryId,
    pinTrayToInner: pinTrayToInner,
    moduleString: moduleString,
    entryIndex: entryIndex,
    entriesBefore: entriesBefore,
    entriesAfter: entriesAfter,
    expandPath: expandPath,
    customModuleSafeName: customModuleSafeName,
    customModuleType: customModuleType,
    customModulePath: customModulePath
  }
}