EMA50 CCI 100 Script

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-- SPDX-License-Identifier: MIT
-- IQOptionWiki QCS Library
-- IQOW EMA50 CCI 100 v1.0.0
--
-- Trend-following pairing. Price on one side of the EMA 50 sets the direction.
-- CCI(14) closing beyond +100 or -100 shows momentum in that direction. Only
-- the first CCI cross inside a window after the EMA cross is marked, so one
-- EMA cross produces at most one marker.
--
-- HIGHER: price closed above EMA 50 and has stayed above it since; the first
--         CCI(14) close above +100 within 15 candles of that EMA cross.
-- LOWER:  price closed below EMA 50 and has stayed below it since; the first
--         CCI(14) close below -100 within 15 candles of that EMA cross.
--
-- Markers use the previous completed candle: they appear after the next candle
-- opens and are shifted back one bar onto the candle that qualified.
-- Educational chart tool only. It does not place trades, choose an expiry,
-- predict outcomes, or guarantee results. Test on a Practice balance first.

instrument {
    name = "IQOW EMA50 CCI 100",
    short_name = "IQOW EMA CCI",
    overlay = true
}

input_group {
    "1. Moving average",
    ema_period = input (50, "EMA period", input.integer, 2, 300)
}

input_group {
    "2. CCI",
    cci_period = input (14, "CCI period", input.integer, 2, 100),
    cci_level = input (100, "CCI level (+/-)", input.double, 20, 300, 5, false),
    window_candles = input (15, "Candles allowed after the EMA cross", input.integer, 1, 100)
}

input_group {
    "Display and advice",
    ema_visible = input { default = true, type = input.plot_visibility },
    signals_visible = input { default = true, type = input.plot_visibility },
    advice_enabled = input { default = false, name = "Enable platform advice", type = input.boolean }
}

input_group {
    "Colors",
    ema_color = input { default = "#56CEFF", type = input.color },
    ema_width = input { default = 2, type = input.line_width },
    higher_color = input { default = "#25E154", type = input.color },
    lower_color = input { default = "#FF6C58", type = input.color },
    signal_text_color = input { default = "#FFFFFF", type = input.color }
}

ema_line = ema (close, ema_period)
cci_value = cci (hlc3, cci_period)

-- Current-bar scalars for the Lua rule logic.
local close_now = get_value (close, nil)
local ema_now = get_value (ema_line, nil)
local cci_now = get_value (cci_value, nil)
local cci_previous = get_value (cci_value [1], nil)

local has_history = get_value (close [ema_period], nil) ~= nil

local data_is_ready =
    has_history and
    close_now ~= nil and
    ema_now ~= nil and
    cci_now ~= nil and
    cci_previous ~= nil

local price_above = data_is_ready and close_now > ema_now
local price_below = data_is_ready and close_now < ema_now

-- Candles since price was last NOT on the current side of the EMA. When price
-- is above the EMA now, a value of 1 means the EMA cross happened this candle.
not_above_bars = bars_since (conditional (not price_above))
not_below_bars = bars_since (conditional (not price_below))
local bars_above = get_value (not_above_bars, nil)
local bars_below = get_value (not_below_bars, nil)

local fresh_above = bars_above ~= nil and bars_above <= window_candles
local fresh_below = bars_below ~= nil and bars_below <= window_candles

-- Event: CCI closes beyond its level on this candle.
local cci_breaks_up = data_is_ready and cci_previous <= cci_level and cci_now > cci_level
local cci_breaks_down = data_is_ready and cci_previous >= -cci_level and cci_now < -cci_level

-- "Fired" stays true for the rest of one run on the same side of the EMA, so
-- only the first CCI break after the EMA cross can create a marker.
local up_fired_before = get_value (up_fired [1], false)
local down_fired_before = get_value (down_fired [1], false)

up_fired = conditional (price_above and (up_fired_before or cci_breaks_up))
down_fired = conditional (price_below and (down_fired_before or cci_breaks_down))

higher_setup = conditional (
    price_above and fresh_above and cci_breaks_up and not up_fired_before
)

lower_setup = conditional (
    price_below and fresh_below and cci_breaks_down and not down_fired_before
)

-- Confirm only a new setup on the previous completed candle.
confirmed_higher = conditional (
    get_value (higher_setup [1], false) and
    not get_value (higher_setup [2], false)
)

confirmed_lower = conditional (
    get_value (lower_setup [1], false) and
    not get_value (lower_setup [2], false)
)

if ema_visible then
    plot (ema_line, "EMA 50", ema_color, ema_width)
end

if signals_visible then
    plot_shape (
        confirmed_higher,
        "EMA CCI HIGHER",
        shape_style.triangleup,
        shape_size.small,
        higher_color,
        shape_location.belowbar,
        -1,
        "HIGHER",
        signal_text_color
    )

    plot_shape (
        confirmed_lower,
        "EMA CCI LOWER",
        shape_style.triangledown,
        shape_size.small,
        lower_color,
        shape_location.abovebar,
        -1,
        "LOWER",
        signal_text_color
    )
end

-- QCS advice is a platform notification state only; it does not place trades.
if advice_enabled and
    get_value (confirmed_higher, false) and
    not get_value (confirmed_lower, false) then
    advise (advice.buy)
elseif advice_enabled and
    get_value (confirmed_lower, false) and
    not get_value (confirmed_higher, false) then
    advise (advice.sell)
else
    advise (advice.neutral)
end