Module: ZeroMcp::Schema

Defined in:
lib/zeromcp/schema.rb

Constant Summary collapse

TYPE_MAP = 
{
  'string'  => { 'type' => 'string' },
  'number'  => { 'type' => 'number' },
  'boolean' => { 'type' => 'boolean' },
  'object'  => { 'type' => 'object' },
  'array'   => { 'type' => 'array' }
}.freeze

Class Method Summary collapse

Class Method Details

.to_json_schema(input) ⇒ Object 



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# File 'lib/zeromcp/schema.rb', line 13

def self.to_json_schema(input)
  return { 'type' => 'object', 'properties' => {}, 'required' => [] } if input.nil? || input.empty?

  properties = {}
  required = []

  input.each do |key, value|
    key = key.to_s
    if value.is_a?(String)
      mapped = TYPE_MAP[value]
      raise "Unknown type \"#{value}\" for field \"#{key}\"" unless mapped

      properties[key] = mapped.dup
      required << key
    elsif value.is_a?(Hash)
      type = value[:type] || value['type']
      mapped = TYPE_MAP[type.to_s]
      raise "Unknown type \"#{type}\" for field \"#{key}\"" unless mapped

      prop = mapped.dup
      desc = value[:description] || value['description']
      prop['description'] = desc if desc
      properties[key] = prop

      optional = value[:optional] || value['optional']
      required << key unless optional
    end
  end

  { 'type' => 'object', 'properties' => properties, 'required' => required }
end

.validate(input, schema) ⇒ Object 



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# File 'lib/zeromcp/schema.rb', line 45

def self.validate(input, schema)
  errors = []

  (schema['required'] || []).each do |key|
    if input[key].nil?
      errors << "Missing required field: #{key}"
    end
  end

  input.each do |key, value|
    prop = schema['properties'][key]
    next unless prop

    actual = value.is_a?(Array) ? 'array' : value.class.name.downcase
    actual = 'number' if value.is_a?(Numeric)
    actual = 'boolean' if value == true || value == false
    actual = 'string' if value.is_a?(String)
    actual = 'object' if value.is_a?(Hash)

    if actual != prop['type']
      errors << "Field \"#{key}\" expected #{prop['type']}, got #{actual}"
    end
  end

  errors
end