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/*backtest
start: 2024-01-20 00:00:00
end: 2024-02-19 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

// This Pine Script™ code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © RWCS_LTD

//@version=5
strategy("DCA IN Calculator {RWCS}", overlay=true, pyramiding=999, default_qty_type=strategy.cash, initial_capital=10000, commission_value=0.02)

// User inputs
backtestStartDate = input(timestamp("1 Jan 2024"), 
     title="Start Date", group="Backtest Time Period",
     tooltip="This start date is in the time zone of the exchange " + 
     "where the chart's instrument trades. It doesn't use the time " + 
     "zone of the chart or of your computer.")
start_date = true
starting_capital = input.float(defval=5000, title="Starting Capital")
dca_allocation_percentage = input.int(defval=10, title="DCA Allocation Percentage")

// Calculate DCA allocation based on price change
price_change_percentage = ((close - close[1]) / close[1]) * 100
adjusted_allocation_percentage = close > close[1] ? dca_allocation_percentage - price_change_percentage : dca_allocation_percentage + price_change_percentage // If price action is negative, increase allocations
adjusted_allocation_percentage1 = dca_allocation_percentage - price_change_percentage // If price action is positive, reduce allocations

// Calculate order size based on adjusted allocation percentage
order_size = (adjusted_allocation_percentage / 100) * starting_capital

// Track remaining capital
var remaining_capital = starting_capital

// Long on the close of every bar
if true
    // Ensure the order size doesn't exceed remaining capital or adjusted allocation
    order_size := math.min(order_size, remaining_capital, adjusted_allocation_percentage / 100 * starting_capital)
    // Ensure order size is not negative
    order_size := math.max(order_size, 0)
    
    strategy.entry("DCA", strategy.long, qty = order_size)
    remaining_capital := remaining_capital - order_size

// Plot average entry price
var float total_entry_price = 0.0
var int total_signals = 0

if start_date
    total_entry_price := total_entry_price + close
    total_signals := total_signals + 1

avg_entry_price = total_entry_price / total_signals

// Calculate and plot median price
var float median_price = na

if start_date
    var float sum_prices = 0.0
    var int num_prices = 0
    
    for i = 0 to bar_index
        if (time[i] >= backtestStartDate)
            sum_prices := sum_prices + close[i]
            num_prices := num_prices + 1
    
    median_price := sum_prices / num_prices

// Reset variables at the start of each day
if (dayofweek != dayofweek[1])
    total_entry_price := 0.0
    total_signals := 0

//table colors
borders_col = color.new(color.black, 90)
top_row_col = color.new(color.gray, 90)
size = input.string(defval='Normal', options=['Tiny', 'Small', 'Normal', 'Large'], title='Table size', inline='design', group='Table Design')
table_size = size == 'Tiny' ? size.tiny : size == 'Small' ? size.small : size == 'Normal' ? size.normal : size == 'Large' ? size.large : na

var tablee = table.new(position=position.top_right, columns=2, rows=3, frame_color=borders_col, frame_width=4, border_color=borders_col, border_width=4)

table.cell(tablee, 0, 0, "Average Entry Price", bgcolor=top_row_col, text_color=color.white, text_size=table_size)
table.cell(tablee, 1, 0, str.tostring(avg_entry_price, '#.##'), text_color=color.white, text_size=table_size)
table.cell(tablee, 0, 1, "Median Price", bgcolor=top_row_col, text_color=color.white, text_size=table_size)
table.cell(tablee, 1, 1, str.tostring(median_price, '#.##'), text_color=color.white, text_size=table_size)
table.cell(tablee, 0, 2, "Remaining Capital", bgcolor=top_row_col, text_color=color.white, text_size=table_size)
table.cell(tablee, 1, 2, str.tostring(remaining_capital, '#.##'), text_color=color.white, text_size=table_size)