module SunbusSuburbs

# File lib/sunbus/suburbs.rb, line 77
def for_region(region)
  code = SunbusConfig.normalize_region(region) || SunbusConfig::DEFAULT_REGION
  return TSV if code == "tsv"
  return CNS if code == "cns"

  {}
end

# File lib/sunbus/suburbs.rb, line 85
def lookup(query, region: SunbusConfig::DEFAULT_REGION)
  resolve(query, region: region)
end

# File lib/sunbus/suburbs.rb, line 73
def normalize_query(query)
  query.to_s.strip.downcase.squeeze(" ")
end

# File lib/sunbus/suburbs.rb, line 89
def resolve(query, region: SunbusConfig::DEFAULT_REGION)
  needle = normalize_query(query)
  return nil if needle.empty?

  table = for_region(region)
  return table[needle] if table[needle]

  canonical = ALIASES[needle]
  return table[canonical] if canonical && table[canonical]

  nil
end