// ONLYOFFICE Custom Function
// Location: View -> Macros -> Custom Functions
// Used on: "HSA Investiments Choices" tab (mutual funds -- Finnhub has no NAV coverage)
// Data source: self-hosted STOCKPROXY service (see server_stockproxy.md / stockproxy_app.py)
//              https://stocks.kingdezigns.com
//
// Real shared secret lives in Vaultwarden -- never commit the real secret to this file.
//
// Usage in a cell:
//   =FUNDPRICE("MKDVX")
//   =FUNDPRICE_HIST("MKDVX", TEXT($B$3,"yyyy-mm-dd"))   <- date MUST be passed as text

(function () {
    var PROXY_BASE = "https://stocks.kingdezigns.com";
    var PROXY_SECRET = "YOUR_PROXY_SECRET_HERE";

    /**
     * Current mutual fund price via your own proxy.
     * @customfunction
     * @param {string} ticker Ticker symbol, e.g. "MKDVX"
     * @returns {any} Latest price, or an error string
     */
    async function FUNDPRICE(ticker) {
        var url = PROXY_BASE + "/current?ticker=" + encodeURIComponent(ticker) + "&key=" + PROXY_SECRET;
        try {
            var r = await fetch(url);
            var data = await r.json();
            if (data && typeof data.price === "number") {
                return data.price;
            }
            return "#N/A";
        } catch (e) {
            return "#ERROR";
        }
    }

    /**
     * Historical fund price on/before a given date via your own proxy.
     * @customfunction
     * @param {string} ticker Ticker symbol, e.g. "MKDVX"
     * @param {string} dateStr Date as YYYY-MM-DD (wrap the date cell with TEXT(cell,"yyyy-mm-dd"))
     * @returns {any} Historical closing price, or an error string
     */
    async function FUNDPRICE_HIST(ticker, dateStr) {
        var url = PROXY_BASE + "/historical?ticker=" + encodeURIComponent(ticker) +
            "&date=" + encodeURIComponent(dateStr) + "&key=" + PROXY_SECRET;
        try {
            var r = await fetch(url);
            var data = await r.json();
            if (data && typeof data.price === "number") {
                return data.price;
            }
            return "#N/A";
        } catch (e) {
            return "#ERROR";
        }
    }

    Api.AddCustomFunction(FUNDPRICE);
    Api.AddCustomFunction(FUNDPRICE_HIST);
})();