RSI OB/OS on Chart

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © lotekjunky

//@version=5

indicator( shorttitle   =   "RSI OB/OS on Chart",   title = " LoTek - On Chart RSI OB/OS w Alerts ",    overlay=true)

// Settings
rsi_len         = input.int         ( 13,       title = " RSI Length ",     inline = "1",       group = "RSI Settings" )
rsi_src         = input.source      ( close,    title = "",                 inline = "1",       group = "RSI Settings" )

i_rsi_ob        = input.int         ( 75,       title = "RSI Overbought",   inline = "4",       group = "Alert Settings" )
i_rsi_os        = input.int         ( 25,       title = "RSI Overbought",   inline = "5",       group = "Alert Settings" )

// Maybe I'll get this figured out some day
//i_char_ob       = input.string      ( "OB",                     title = "Overbought Symbol",        inline = "1",       group = "On Chart" )
//i_char_os       = input.string      ( "OS",                     title = "Oversold Symbol",          inline = "2",       group = "On Chart" )
//i_col_ob        = input.color       ( color.new(color.lime,50), title = "OB Symbol Color",          inline = "3",       group = "On Chart" )
//i_col_os        = input.color       ( color.new(color.red,50),  title = "OS Symbol Color",          inline = "4",       group = "On Chart" )

// Do math and stuff
rsi_val = ta.rsi(rsi_src, rsi_len)
bl_rsi_ob = rsi_val >= i_rsi_ob
bl_rsi_os = rsi_val <= i_rsi_os

// Draw on chart
plotshape(bl_rsi_ob, title='Overbought', location=location.abovebar, color=color.new(color.red,50),  style=shape.triangledown,   text='OB')
plotshape(bl_rsi_os, title='OverSold',   location=location.belowbar,   color=color.new(color.lime,50), style=shape.triangledown, text='OS')

// Alerts
alertcondition( bl_rsi_ob, title='RSI Overbought', message='RSI OB')
alertcondition( bl_rsi_os, title='RSI Oversold'  , message='RSI OB')