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

//@version=4
strategy("My Strategy", overlay=false)

///// Backtest Start Date /////
startDate   = input(title="Start Date",  type=input.integer, defval=15,    minval=1,    maxval=31)
startMonth  = input(title="Start Month", type=input.integer, defval=3,    minval=1,    maxval=12)
startYear   = input(title="Start Year",  type=input.integer, defval=2019, minval=1800, maxval=2100)

startDateEnd   = input(title="Start Date",  type=input.integer, defval=25,    minval=1,    maxval=31)
startMonthEnd  = input(title="Start Month", type=input.integer, defval=11,    minval=1,    maxval=12)
startYearEnd   = input(title="Start Year",  type=input.integer, defval=2021, minval=1800, maxval=2100)
afterStartDate = (time <= timestamp(syminfo.timezone, startYearEnd, startMonthEnd, startDateEnd, 0, 0) and time >= timestamp(syminfo.timezone, startYear, startMonth, startDate, 0, 0))


len=input(10,title="length")

//DI+ and DI-
upz = change(high)
down = -change(low)
trur = rma(tr, len)
plus = fixnan(100 * rma(upz > down and upz > 0 ? upz : 0, len) / trur)
minus = fixnan(100 * rma(down > upz and down > 0 ? down : 0, len) / trur)
sum = plus + minus
adx = 100 * rma(abs(plus - minus) / (sum == 0 ? 1 : sum), len)
di=plus-minus
o=plot(di,color=color.black,title="Diretion Index color",offset=0)
longCondition = crossover(di,0)
// and atr(14)[1]<atr(14)[0]
if (longCondition and afterStartDate)
    strategy.entry("My Long Entry Id", strategy.long)

shortCondition = crossunder(di,0)
if (shortCondition and afterStartDate )
    // strategy.close_all()
    strategy.entry("My Short Entry Id", strategy.short)