📘 API для користувацьких індикаторів

Прочитай прикріплений файл AI.txt:
https://mobchart.com/docs/public/AI.txt

Використовуй його як єдине джерело інформації про API скриптингу MobChart.

Створи користувацький індикатор, який відображає EMA з періодами 20 і 50 на графіку. Зафарбуй свічки в зелений колір, якщо EMA20 знаходиться вище EMA50, і в червоний — в іншому випадку.

Використовуй лише документований API. Не вигадуй функції. Поверни повний код індикатора.

define("My Indicator", "Shows EMA line", "onchart", true, false);

const length = input.number("Period", 14, 1, 100, 1);
const type = input.select("Type", 'sma', ['sma', 'ema']);
const color = input.color("Line Color", "#FF0000");

const length = style.number("Size", 14, 1, 100, 1);
const color = style.select("Background Color", '#FF0000', ["#FF0000", "#AA0000", "#BB0000"]);
const color = style.color("Background Color", "#FF0000");

[
    {
        "open": 115886.17,
        "high": 115911.96,
        "low": 115764.27,
        "close": 115815.16,
        "volume": 228.41528,
        "startTime": 1757699100000
    },
    {...},
    ...
]

[
    {
        "data": {
            "asks": {
                "109425": 5.467,
                "109495": 3.564,
                ...
            },
            "bids": {
                "33000": 3.746,
                "35000": 16.49,
                ...
            }
        },
        "startTime": 1757699100000
    },
    {...},
    ...
]

[
    {
        "data": {
            "totalBuy": 16053385,
            "totalSell": 20490989,
            "0.8654": { "buy": 286845, "sell": 336689 },
            "0.8653": { "buy": 271848, "sell": 259167 },
            "0.8652": { "buy": 318814, "sell": 373497 },
            ...
        },
        "startTime": 1757699100000
    },
    {...},
    ...
]

[
    {
        "data": {
            "totalBuy": 16053385,
            "totalSell": 20490989,
            "0.8654": { "buy": 286845, "sell": 336689 },
            "0.8653": { "buy": 271848, "sell": 259167 },
            "0.8652": { "buy": 318814, "sell": 373497 },
            ...
        },
        "startTime": 1757699100000
    },
    {...},
    ...
]

[
    {  
        "data": {
            "FR": 0.00003777, // Funding Rate
            "OI": { // Open Interest Candle
                "open": 85645.708,
                "close": 83496.225,
                "high": 85801.04,
                "low": 83397.918
            },
            "LS": { "l": 0.5426, "s": 0.4574 }, // Long/Short Ratio
            "taLS": { "l": 0.552, "s": 0.448 }, // Top Traders Account Ratio
            "tpLS": { "l": 0.5996, "s": 0.4004 } // Top Traders Position Ratio
        },
        "startTime": 1757699100000
    },
    {...},
    ...
]

const candles = source.ohlcv(); // Параметри exchange, ticker, timeframe за замовчуванням прив’язані до поточного графіка.
const closes = candles.map(c => c.close);

const candles = source.ohlcv(currentExchange, currentTicker, currentTimeframe);
const closes = candles.map(c => c.close);

const candles = source.ohlcv();
logger.log("First candle:", candles?.[0]);

plot.text("Text object", "Hello world!", 1757699100000, 115000, 10, "#00C8FF", 0.5);
plot.straightLine(`${namePrefix} Open`, level.timeStart, level.open, level.timeEnd, level.open, color);
plot.circle(`${namePrefix} High`, level.timeStart, level.high, 3, color);

plot.lineSeries("EMA", ta.ema(closes, 20), "#00C8FF");
plot.barSeries("Premium %", premiumPercents, ((d) => d > 0 ? color1 : color2), 1);
plot.candleSeries(
    "Candles",
    opens, closes, highs, lows,
    (v, i) => {
        return opens?.[i] > closes?.[i] ? colorBuy : colorSell
    }
);

const candles = source.ohlcv();
const closes = candles.map(c => c.close);
const rsiValues = ta.rsi(closes, 14);
plot.lineSeries("RSI", rsiValues, "#00C8FF");

const alertVolumeThreshold = alertInput.number("Volume threshold", 1000, 0, 10000000, 1);

if (candle.volume > alertVolumeThreshold) {
    alert.fire("High volume", `vol ${candle.volume}`, candle.startTime);
}

// simple: fires every time the shape is plotted for a new date
plot.box(...).alert("High volume", `vol ${candle.volume}`);

// callback: return nothing to skip, [title, message] to fire
plot.box(...).alert((shape) => {
    if (candle.volume > alertVolumeThreshold)
        alert.fire("High volume", `vol ${candle.volume}`, candle.startTime);
});

plot.lineSeries("RSI", rsiValues, color).alert((rsi, date) => {
    if (rsi > alertRsiThreshold) alert.fire("RSI high", `RSI ${rsi.toFixed(1)}`, latestCandle.startTime);
});

const title = "Volume alerts";
const description = "Shows boxes on high-volume candles";
define(title, description, "onchart", true, true);

const color = style.color("Color", "#00C8FF");
const volumeThreshold = input.number("Volume threshold", 1000, 0, 10000000, 1);
const alertVolumeThreshold = alertInput.number("Alert volume threshold", 5000, 0, 10000000, 1);
const alertCloseThreshold = alertInput.number("Alert close threshold", 100000, 0, 10000000, 1);

const candles = source.ohlcv();
const latestCandle = candles.at(-1);
const closes = candles.map(c => c.close);

// series alert: checks the latest close
plot.lineSeries("Closes", closes, color).alert((close, date) => {
    if (close > alertCloseThreshold) alert.fire("Close above threshold", `close ${close}`, latestCandle.startTime);
});

for (let i = 0; i < candles.length; i++) {
    const candle = candles[i];

    if (candle.volume > volumeThreshold) {
        const right = i < candles.length - 1 ? candles[i + 1].startTime : candle.startTime + 60000;

        // shape alert: checked against the user's alert threshold
        plot.box(`Volume ${i}`, candle.startTime, candle.high, right, candle.low, "#00C8FF", 0.3)
            .alert(() => {
                if (candle.volume > alertVolumeThreshold)
                    alert.fire("High volume", `vol ${candle.volume}`, candle.startTime);
            });
    }
}

const title = "Your first indicator";
const description = "Shows closes lines on the chart";
const indicatorType = "onchart";

define(title, description, type, true, true);

const color = input.color("Line Color", "#00C8FF");
const candles = source.ohlcv();
const closes = candles.map(c => c.close);
plot.lineSeries("Closes", closes, color);

define("Example Indicator", "Demonstrates basic plotting", "onchart", true, true);

const color = input.color("Line Color", "#00FF99");
const candles = source.ohlcv();
const closes = candles.map(c => c.close);

const ema20 = ta.ema(closes, 20);
plot.lineSeries("EMA 20", ema20, color);

const title = "Colored Volume Bars";  
const description = "Volumes colored based on candle direction.";  
const indicatorType = "onchart";  
const isPublic = true;  
const isPublicCode = true;  

define(title, description, indicatorType, isPublic, isPublicCode);  

// Get OHLC candles
const candles = source.ohlcv();  

const colorUp = style.color("Color 1", "#2BB462"); // Greenish color for rising prices
const colorDown = style.color("Color 2", "#FB4C51"); // Reddish color for falling prices
const volumes = candles.map(candle => candle.volume);  

plot.barSeries("Volume", volumes, (value, index) => {
    const currentCandle = candles[index];  
    return currentCandle.close >= currentCandle.open ? colorUp : colorDown;  
});

define('Coinbase Premium Index', 'Coinbase Premium Index', 'offchart', true, false);

const color1 = style.color("Color 1", "#2BB462");
const color2 = style.color("Color 2", "#FB4C51");

// Get OHLC candles
const cbCandles = source.ohlcv('coinbase', 'BTC-USD');
const binanceCandles = source.ohlcv('binance', 'BTCUSDT');

// Extract closes
const cbCloses = cbCandles.map(c => c.close);
const binanceCloses = binanceCandles.map(c => c.close);

// --- Coinbase Premium Index calculation ---
const premiumPercent = cbCloses.map((cb, i) => {
    const b = binanceCloses[i];
    return ((cb - b) / b) * 100;
});

// Plot premium index
plot.barSeries("Premium %", premiumPercent, ((d) => d > 0 ? color1 : color2)) // Percentage difference

const title = "Candles";
const description = "Simple candles draw";
const indicatorType = "offchart";
const isPublic = true;
const isPublicCode = true;
define(title, description, indicatorType, isPublic, isPublicCode);

const colorBuy = style.color("Buy Color", "#2BB462");
const colorSell = style.color("Sell Color", "#7a3d3f");
const candles = source.ohlcv();
const closes = candles.map(c => c.close);
const opens = candles.map(c => c.open);
const highs = candles.map(c => c.high);
const lows = candles.map(c => c.low);
plot.candleSeries(
    "Candles",
    opens, closes, highs, lows,
    (v, i) => {
        return opens?.[i] > closes?.[i] ? colorBuy : colorSell
    }
);