Woodies CCI Markers

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-- SPDX-License-Identifier: MIT
-- IQOptionWiki QCS Library
-- IQOW Woodies CCI Markers v1.0.0
--
-- Price-chart companion of IQOW Woodies CCI (woodies-cci). It draws no lines:
-- only that script's HIGHER and LOWER markers, above and below the candles on
-- the price chart. A script with its own panel draws its markers at the
-- candle's price on the panel's axis, so on assets priced above about 100 (for
-- example JPY pairs) they fall outside the panel. Add IQOW Woodies CCI as well
-- to see the CCI lines. Keep the settings of both scripts equal.
--
-- Woodies CCI uses two Commodity Channel Index lines: the 14-period CCI and the
-- faster 6-period Turbo CCI. The zero line separates bullish from bearish
-- conditions. This setup marks a zero-line cross of the CCI after it spent a
-- stretch on the other side, with Turbo CCI already pointing the same way.
--
-- HIGHER: CCI(14) crosses above zero after at least 6 candles below zero, and
--         Turbo CCI(6) is above zero on that candle.
-- LOWER:  CCI(14) crosses below zero after at least 6 candles above zero, and
--         Turbo CCI(6) is below zero on that candle.
--
-- 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 Woodies CCI Markers",
    short_name = "MK WCCI",
    overlay = true
}

input_group {
    "1. CCI lines",
    cci_period = input (14, "CCI period", input.integer, 7, 20),
    turbo_period = input (6, "Turbo CCI period", input.integer, 3, 14),
    bars_on_other_side = input (6, "Candles on the other side of zero", input.integer, 1, 20)
}

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

input_group {
    "Colors",
    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 }
}

cci_value = cci (close, cci_period)
turbo_value = cci (close, turbo_period)

local cci_now = get_value (cci_value, nil)
local turbo_now = get_value (turbo_value, nil)
local cci_before = get_value (cci_value [1], nil)

local data_is_ready = cci_now ~= nil and turbo_now ~= nil and cci_before ~= nil

-- Count the candles just before this one that stayed on one side of zero.
local candles_below = 0
local candles_above = 0
if data_is_ready then
    local counting_below = true
    local counting_above = true
    for back = 1, bars_on_other_side do
        local past = get_value (cci_value [back], nil)
        if past == nil then
            counting_below = false
            counting_above = false
        else
            if counting_below and past < 0 then candles_below = candles_below + 1 else counting_below = false end
            if counting_above and past > 0 then candles_above = candles_above + 1 else counting_above = false end
        end
    end
end

higher_setup = conditional (
    data_is_ready and candles_below >= bars_on_other_side and cci_now > 0 and turbo_now > 0
)

lower_setup = conditional (
    data_is_ready and candles_above >= bars_on_other_side and cci_now < 0 and turbo_now < 0
)

-- 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)
)

-- Markers on the price chart: HIGHER below the candle, LOWER above it. Offset -1
-- puts each one on the candle that completed the setup (the confirmation above
-- is evaluated when the next candle opens).
if signals_visible then
    plot_shape (
        confirmed_higher,
        "WCCI HIGHER",
        shape_style.triangleup,
        shape_size.small,
        higher_color,
        shape_location.belowbar,
        -1,
        "HIGHER",
        signal_text_color
    )

    plot_shape (
        confirmed_lower,
        "WCCI 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