Awesome Oscillator SMA Script

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-- SPDX-License-Identifier: MIT
-- IQOptionWiki QCS Library
-- IQOW Awesome Oscillator SMA v1.0.0
--
-- Combines the Awesome Oscillator (5 and 34 SMA of the candle midpoint) with a
-- 100-period SMA, as in the related article. The AO crossing zero shows short-term
-- momentum overtaking long-term momentum; the SMA keeps the mark on the side of
-- the larger trend.
--
-- HIGHER: the Awesome Oscillator closes above zero after the previous candle was
--         at or below zero, and the close is above the SMA.
-- LOWER:  the Awesome Oscillator closes below zero after the previous candle was
--         at or above zero, and the close is below the SMA.
--
-- 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 Awesome Oscillator SMA",
    short_name = "IQOW AO SMA",
    overlay = true
}

input_group {
    "1. Awesome Oscillator",
    ao_fast_period = input (5, "Fast SMA period", input.integer, 1, 100),
    ao_slow_period = input (34, "Slow SMA period", input.integer, 2, 250)
}

input_group {
    "2. Trend SMA",
    sma_period = input (100, "SMA period", input.integer, 2, 400)
}

input_group {
    "Display and advice",
    sma_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",
    sma_color = input { default = "#FFD166", type = input.color },
    sma_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 }
}

-- Awesome Oscillator = SMA of the midpoint (hl2): fast minus slow.
ao_value = sma (hl2, ao_fast_period) - sma (hl2, ao_slow_period)
trend_sma = sma (close, sma_period)

local ao_now = get_value (ao_value, nil)
local ao_previous = get_value (ao_value [1], nil)
local sma_now = get_value (trend_sma, nil)
local close_now = get_value (close, nil)

local periods_are_valid = ao_fast_period < ao_slow_period

local data_is_ready =
    periods_are_valid and
    ao_now ~= nil and
    ao_previous ~= nil and
    sma_now ~= nil and
    close_now ~= nil

-- Event: the AO crosses its zero line on this candle.
local ao_crosses_up = data_is_ready and ao_previous <= 0 and ao_now > 0
local ao_crosses_down = data_is_ready and ao_previous >= 0 and ao_now < 0

higher_setup = conditional (ao_crosses_up and close_now > sma_now)
lower_setup = conditional (ao_crosses_down and close_now < sma_now)

-- 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 sma_visible then
    plot (trend_sma, "SMA", sma_color, sma_width)
end

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

    plot_shape (
        confirmed_lower,
        "AO SMA 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