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/*
 * Copyright (c) 2021. JetBrains s.r.o.
 * Use of this source code is governed by the MIT license that can be found in the LICENSE file.
 */

package org.jetbrains.letsPlot.scale

import org.jetbrains.letsPlot.core.spec.Option
import org.jetbrains.letsPlot.core.plot.base.Aes
import org.jetbrains.letsPlot.intern.Options
import org.jetbrains.letsPlot.intern.Scale

/**
 * Scales for alpha aesthetic.
 *
 * @param range The range of the mapped aesthetics result.
 * @param name The name of the scale - used as the axis label or the legend title. If null, the default, the name of the scale
 *  is taken from the first mapping used for that aesthetic.
 * @param breaks A list of data values specifying the positions of ticks,
 *  or a dictionary which maps the tick labels to the breaks values.
 * @param labels A list of labels on ticks, or a dictionary which maps the breaks values to the tick labels.
 * @param lablim The maximum label length (in characters) before trimming is applied.
 * @param limits A numeric vector of length two providing limits of the scale.
 * @param naValue An aesthetic value which is used when data in not available.
 * @param format Specifies the format pattern for labels on the scale.
 * @param guide Guide to use for this scale.
 *  It can either be a string ("colorbar", "legend") or a call to a guide function (`guideColorbar()`, `guideLegend()`)
 *  specifying additional arguments.
 *  "none" will hide the guide.
 * @param trans Name of built-in transformation ("identity", "log10", "log2", "symlog", "reverse", "sqrt").
 *
 * Format patterns in the `format` parameter can be just a number format (like "d") or
 * a string template where number format is surrounded by curly braces: "{d} cylinders".
 * Note: the "$" must be escaped as "\$".
 * For more info see: [formats.md](https://github.com/JetBrains/lets-plot-kotlin/blob/master/docs/formats.md)
 *
 * Examples:
 * - ".2f" -> "12.45";
 * - "Score: {.2f}" -> "Score: 12.45";
 * - "Score: {}" -> "Score: 12.454789".
 *
 */
fun scaleAlpha(
    range: Pair? = null,
    name: String? = null,
    breaks: Any? = null,
    labels: Any? = null,
    lablim: Int? = null,
    limits: Pair? = null,
    naValue: Number? = null,
    format: String? = null,
    guide: Any? = null,
    trans: String? = null
) = Scale(
    aesthetic = Aes.ALPHA,
    name = name,
    breaks = breaks,
    labels = labels,
    lablim = lablim,
    limits = limits,
    naValue = naValue,
    format = format,
    guide = guide,
    trans = trans,
    otherOptions = Options(
        mapOf(
            Option.Scale.RANGE to range?.toList()
        )
    )
)