// MIT License

// Copyright (c) 2022 Tree Xie

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

package charts

import (
	"strings"

	"github.com/wcharczuk/go-chart/v2"
	"github.com/wcharczuk/go-chart/v2/drawing"
)

type YAxisOption struct {
	// The minimun value of axis.
	Min *float64
	// The maximum value of axis.
	Max *float64
	// Hidden y axis
	Hidden bool
	// Formatter for y axis text value
	Formatter string
	// Color for y axis
	Color drawing.Color
}

// TODO 长度是否可以变化
const YAxisWidth = 40

func drawYAxis(p *Painter, opt *ChartOption, axisIndex, xAxisHeight int, padding chart.Box) (*Range, error) {
	theme := NewTheme(opt.Theme)
	yRange := opt.newYRange(axisIndex)
	values := yRange.Values()
	yAxis := opt.YAxisList[axisIndex]
	formatter := yAxis.Formatter
	if len(formatter) != 0 {
		for index, text := range values {
			values[index] = strings.ReplaceAll(formatter, "{value}", text)
		}
	}

	data := NewAxisDataListFromStringList(values)
	style := AxisOption{
		Position:       PositionLeft,
		BoundaryGap:    FalseFlag(),
		FontColor:      theme.GetAxisStrokeColor(),
		TickShow:       FalseFlag(),
		StrokeWidth:    1,
		SplitLineColor: theme.GetAxisSplitLineColor(),
		SplitLineShow:  true,
	}
	if !yAxis.Color.IsZero() {
		style.FontColor = yAxis.Color
		style.StrokeColor = yAxis.Color
	}
	width := NewAxis(p, data, style).measure().Width

	yAxisCount := len(opt.YAxisList)
	boxWidth := p.Width()
	if axisIndex > 0 {
		style.SplitLineShow = false
		style.Position = PositionRight
		padding.Right += (axisIndex - 1) * YAxisWidth
	} else {
		boxWidth = p.Width() - (yAxisCount-1)*YAxisWidth
		padding.Left += (YAxisWidth - width)
	}

	pYAxis := p.Child(
		PainterWidthHeightOption(boxWidth, p.Height()-xAxisHeight),
		PainterPaddingOption(padding),
		PainterFontOption(opt.Font),
	)
	NewAxis(pYAxis, data, style).Render()
	yRange.Size = pYAxis.Height()
	return &yRange, nil
}