Archer Moving Averages Trends (AMAT)

// Licensed under the Apache License, Version 2.0
// © mihakralj
//@version=6
indicator("Archer Moving Averages Trends (AMAT)", "AMAT", overlay=false)

//@function Calculates AMAT using multiple EMAs to identify trend direction
//@param source Series to calculate AMAT from
//@param fast Fast EMA period
//@param slow Slow EMA period
//@returns Tuple [bullish_count, bearish_count, trend_strength]
amat(series float source, simple int fast = 10, simple int slow = 50) =>
    if fast <= 0 or slow <= 0
        runtime.error("Periods must be greater than 0")
    if fast >= slow
        runtime.error("Fast period must be less than slow period")
    
    float alpha_fast = 2.0 / (fast + 1)
    float alpha_slow = 2.0 / (slow + 1)
    
    var float ema_fast = source
    var float ema_slow = source
    var float ema_fast_prev = source
    var float ema_slow_prev = source
    
    ema_fast := alpha_fast * (source - ema_fast) + ema_fast
    ema_slow := alpha_slow * (source - ema_slow) + ema_slow
    
    float long_trend = ema_fast > ema_slow and ema_fast > ema_fast_prev and ema_slow > ema_slow_prev ? 1.0 : 0.0
    float short_trend = ema_fast < ema_slow and ema_fast < ema_fast_prev and ema_slow < ema_slow_prev ? -1.0 : 0.0
    
    ema_fast_prev := ema_fast
    ema_slow_prev := ema_slow
    
    float trend = long_trend + short_trend
    float strength = math.abs(ema_fast - ema_slow) / ema_slow * 100
    
    [trend, strength, ema_fast, ema_slow]

// ---------- Main loop ----------

// Inputs
i_fast = input.int(10, "Fast Period", minval=1)
i_slow = input.int(50, "Slow Period", minval=2)
i_source = input.source(close, "Source")

// Calculation
[trend, strength, ema_fast, ema_slow] = amat(i_source, i_fast, i_slow)

// Plot
plot(trend, "AMAT Trend", color=trend > 0 ? color.green : trend < 0 ? color.red : color.gray, style=plot.style_columns, linewidth=3)
plot(strength, "Trend Strength %", color=color.yellow, linewidth=2)
hline(0, "Zero", color=color.gray, linestyle=hline.style_dashed)