module Magick
  class Image
    include Comparable

    include _ImageCommonMethods

    # When it reads an image file, it returns one or more Image objects.
    # However, it cannot properly define it in RBS.
    # If define as Array[Image] implies the possibility of returning nil.
    # it would require consideration of nil in subsequent method calls.
    # So, it defined in Tuple type to avoid allowing unnecessary guard statements to be written.
    def self.constitute: (int witdth_arg, int height_arg, string map_arg, Array[Pixel] pixels_arg) -> Image
    def self._load: (string str) -> Image
    def self.capture: (bool silent, bool frame, bool descend, bool screen, bool borders) -> Image
                    | (bool silent, bool frame, bool descend, bool screen, bool borders) { (Image::Info) -> void } -> Image
    def self.ping: (File | string file) -> [Image]
                 | (File | string file) { (Image::Info) -> void } -> [Image]
    def self.read: (File | string file) -> [Image]
                 | (File | string file) { (Image::Info) -> void } -> [Image]
    def self.read_inline: (string content) -> [Image]
                        | (string content) { (Image::Info) -> void } -> [Image]
    def self.from_blob: (string blob) -> [Image]
                      | (string blob) { (Image::Info) -> void } -> [Image]

    def initialize: (int cols, int rows, ?magick_fill fill) -> void
                  | (int cols, int rows, ?magick_fill fill) { (Image::Info) -> void } -> void
    def <=>: (untyped object) -> (Integer | nil)
    def []: (interned key_arg) -> String?
    def []=: (interned key_arg, String attr_arg) -> self
    def delay=: (int val) -> int
    def display: () -> self
               | () { (Image::Info) -> void} -> self
    def marshal_dump: () -> [String, String]
    def marshal_load: ([string, string] ary) -> self
    def montage: () -> String?
    def quantize: (?int number_colors, ?ColorspaceType colorspace, ?bool dither, ?int tree_depth, ?bool measure_error) -> Image
    def scene: () -> Integer
    def ticks_per_second=: (int tps) -> int
    def to_blob: () -> String?
               | () { (Image::Info) -> void} -> String?
    def write: (File | string file) -> self
             | (File | string file) { (Image::Info) -> void} -> self

    class View
      attr_reader x: real
      attr_reader y: real
      attr_reader width: real
      attr_reader height: real
      attr_accessor dirty: bool
      def initialize: (Image img, real x, real y, real width, real height) -> void
      def []: (Integer index) -> Rows
            | (Range[Numeric] range) -> Rows
            | (Integer start, Integer length) -> Rows
      def sync: (?bool force) -> bool
      def update: (Rows rows) -> nil

      class Pixels < Array[untyped]
        # include Observable
        def red: () -> Array[Integer]
        attr_writer red: Integer
        def green: () -> Array[Integer]
        attr_writer green: Integer
        def blue: () -> Array[Integer]
        attr_writer blue: Integer
        def opacity: () -> Array[Integer]
        attr_writer opacity: Integer
      end

      class Rows
        # include Observable
        def initialize: (View view, real width, real height, Rows rows) -> void
        def []: () -> View::Pixels
              | (Integer index) -> Pixel
              | (Range[Numeric] range) -> View::Pixels
              | (Integer start, Integer length) -> View::Pixels
        def []=: (magick_color value) -> void
               | (Integer index, magick_color value) -> void
               | (Range[Numeric] range, magick_color value) -> void
               | (Integer start, Integer length, magick_color value) -> void
        def update: (Pixels | Pixel pixel) -> nil

        private

        def cols: (*untyped args) -> void
        def each: () -> void
      end
    end

    class Info
      def initialize: () -> void
      def channel: (*ChannelType channel) -> self
      def define: (string format, string key, ?string value) -> self?
      def []=: (string format, string key, string value) -> self?
             | (string key, string value) -> self?
      def []: (string format, string key) -> String?
            | (string key) -> String?
      def undefine: (string format, string key) -> self

      attr_accessor antialias: bool
      def attenuate: () -> Float
      attr_writer attenuate: magick_real
      attr_accessor authenticate: string?
      def background_color: () -> String
      attr_writer background_color: magick_color
      def border_color: () -> String
      attr_writer border_color: magick_color
      def caption: () -> String
      attr_writer caption: string?
      attr_accessor colorspace: ColorspaceType
      def comment: () -> String
      attr_writer comment: string?
      attr_accessor compression: CompressionType
      def delay: () -> Integer?
      attr_writer delay: int?
      def density: () -> String?
      attr_writer density: (Geometry | string)?
      def depth: () -> Integer
      attr_writer depth: int
      def dispose: () -> DisposeType
      attr_writer dispose: DisposeType?
      attr_accessor dither: bool
      attr_accessor endian: EndianType
      def extract: () -> String?
      attr_writer extract: (Geometry | string)?
      def filename: () -> String
      attr_writer filename: string?
      def fill: () -> String?
      attr_writer fill: string?
      def font: () -> String?
      attr_writer font: string?
      def format: () -> String?
      attr_writer format: string
      def fuzz: () -> Float
      attr_writer fuzz: magick_percentage
      def gravity: () -> GravityType
      attr_writer gravity: GravityType?
      attr_accessor image_type: ImageType
      attr_accessor interlace: InterlaceType
      def label: () -> String?
      attr_writer label: string?
      def matte_color: () -> String
      attr_writer matte_color: magick_color
      attr_accessor monochrome: bool
      def number_scenes: () -> Integer
      attr_writer number_scenes: int
      attr_accessor orientation: OrientationType
      def origin: () -> String?
      attr_writer origin: (Geometry | string)?
      def page: () -> String?
      attr_writer page: (Geometry | string)?
      def pointsize: () -> Float
      attr_writer pointsize: magick_real
      def quality: () -> Integer
      attr_writer quality: int
      def sampling_factor: () -> String?
      attr_writer sampling_factor: string?
      def scene: () -> Integer
      attr_writer scene: int
      def server_name: () -> String?
      attr_writer server_name: string?
      def size: () -> String?
      attr_writer size: (Geometry | string)?
      def stroke: () -> String?
      attr_writer stroke: string?
      def stroke_width: () -> Float?
      attr_writer stroke_width: magick_real?
      attr_writer texture: Image | nil
      def tile_offset: () -> String?
      attr_writer tile_offset: (Geometry | string)?
      def transparent_color: () -> String
      attr_writer transparent_color: magick_color
      def undercolor: () -> String?
      attr_writer undercolor: string?
      attr_accessor units: ResolutionType
      def view: () -> String?
      attr_writer view: string?
    end

    class DrawOptions
      def initialize: () -> void

      include DrawAttribute
    end

    class PolaroidOptions
      def initialize: () -> void

      attr_writer shadow_color: magick_color
      attr_writer border_color: magick_color

      include DrawAttribute
    end
  end
end