ICT Sessions

//version=6
indicator("ICT交易时段", overlay=true)

// ==================== 设置 ====================
tz = input.string("America/New_York", "时区", options=["America/New_York", "Asia/Shanghai", "UTC"])

showAsia = input.bool(true, "显示亚洲盘")
showLondon = input.bool(true, "显示伦敦盘")
showNY = input.bool(true, "显示纽约盘")
showOverlap = input.bool(true, "显示重合时段")

// 重点：加上 :23456 （只周一到周五）
asiaS = input.session("1900-0400:23456", "亚洲盘时间")
londonS = input.session("0200-1200:23456", "伦敦盘时间")
nyS = input.session("0800-1700:23456", "纽约盘时间")

asiaColor = input.color(color.new(#F5E6C8, 78), "亚洲颜色")
londonColor = input.color(color.new(#C8E6C9, 78), "伦敦颜色")
nyColor = input.color(color.new(#E1BEE7, 78), "纽约颜色")
overlapColor = input.color(color.new(#9C27B0, 65), "伦敦-纽约重合颜色")
asiaLonColor = input.color(color.new(#80CBC4, 70), "亚洲-伦敦重合颜色")

// ==================== 核心逻辑 ====================
isAsia = not na(time(timeframe.period, asiaS, tz))
isLondon = not na(time(timeframe.period, londonS, tz))
isNY = not na(time(timeframe.period, nyS, tz))

isLondonNY = isLondon and isNY
isAsiaLon = isAsia and isLondon

// ==================== 背景绘制 ====================
bgcolor(showOverlap and isLondonNY ? overlapColor : na)
bgcolor(showOverlap and isAsiaLon ? asiaLonColor : na)

bgcolor(showAsia and isAsia and not isAsiaLon and not isLondonNY ? asiaColor : na)
bgcolor(showLondon and isLondon and not isAsiaLon and not isLondonNY ? londonColor : na)
bgcolor(showNY and isNY and not isLondonNY ? nyColor : na)