/*
Copyright © 2021 Zoraiz Hassan <hzoraiz8@gmail.com>

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package aic_package

type Flags struct {
	// Set dimensions of ascii art. Accepts a slice of 2 integers
	// e.g. []int{60,30}.
	// This overrides Flags.Width and Flags.Height
	Dimensions []int

	// Set width of ascii art while calculating height from aspect ratio.
	// Setting this along with Flags.Height will throw an error
	Width int

	// Set height of ascii art while calculating width from aspect ratio.
	// Setting this along with Flags.Width will throw an error
	Height int

	// Use set of 69 characters instead of the default 10
	Complex bool

	// Path to save ascii art .txt file
	SaveTxtPath string

	// Path to save ascii art .png file
	SaveImagePath string

	// Path to save ascii art .gif file, if gif is passed
	SaveGifPath string

	// Invert ascii art character mapping as well as colors
	Negative bool

	// Keep colors from the original image. This uses the True color codes for
	// the terminal and will work on saved .png and .gif files as well.
	// This overrides Flags.Grayscale and Flags.FontColor
	Colored bool

	// If Flags.Colored, Flags.Grayscale or Flags.FontColor is set, use that color
	// on each character's background in the terminal
	CharBackgroundColor bool

	// Keep grayscale colors from the original image. This uses the True color
	// codes for the terminal and will work on saved .png and .gif files as well
	// This overrides Flags.FontColor
	Grayscale bool

	// Pass custom ascii art characters as a string.
	// e.g. " .-=+#@".
	// This overrides Flags.Complex
	CustomMap string

	// Flip ascii art horizontally
	FlipX bool

	// Flip ascii art vertically
	FlipY bool

	// Use terminal width to calculate ascii art size while keeping aspect ratio.
	// This overrides Flags.Dimensions, Flags.Width and Flags.Height
	Full bool

	// File path to a font .ttf file to use when saving ascii art gif or png file.
	// This will be ignored if Flags.SaveImagePath or Flags.SaveGifPath are not set
	FontFilePath string

	// Font RGB color for terminal display and saved png or gif files.
	FontColor [3]int

	// Background RGB color in saved png or gif files.
	// This will be ignored if Flags.SaveImagePath or Flags.SaveGifPath are not set
	SaveBackgroundColor [3]int

	// Use braille characters instead of ascii. Terminal must support UTF-8 encoding.
	// Otherwise, problems may be encountered with colored or even uncolored braille art.
	// This overrides Flags.Complex and Flags.CustomMap
	Braille bool

	// Threshold for braille art if Flags.Braille is set to true. Value provided must
	// be between 0 and 255. Ideal value is 128.
	// This will be ignored if Flags.Braille is not set
	Threshold int

	// Apply FloydSteinberg dithering on an image before ascii conversion. This option
	// is meant for braille art. Therefore, it will be ignored if Flags.Braille is false
	Dither bool

	// Set this to true to disable comparing ascii art size to terminal. However, at least
	// one of Flags.Width, Flags.Height or Flags.Dimensions should be passed to keep it from
	// throwing an error.
	//
	// Note: This option is added for using the library in an environment without terminals (such as web servers).
	// Furthermore, coloring options will not work outside of a terminal environment.
	NoTermSizeComparison bool
}

var (
	dimensions           []int
	width                int
	height               int
	complex              bool
	saveTxtPath          string
	saveImagePath        string
	saveGifPath          string
	grayscale            bool
	negative             bool
	colored              bool
	colorBg              bool
	customMap            string
	flipX                bool
	flipY                bool
	full                 bool
	fontPath             string
	fontColor            [3]int
	saveBgColor          [3]int
	braille              bool
	threshold            int
	dither               bool
	noTermSizeComparison bool
)