price_api/apply_guidance.ts

export function apply_guidance(doc: any) {

    function getAdjValue(number) {
      const data = [
        {f: 2.001, t: 1000,      snap: 3,  adj: 0   },
        {f: 1.001, t: 2,         snap: 2,  adj: 0   },
        {f: 0.1,   t: 1,         snap: 1,  adj: 0   },
        {f: 0,     t: 0.1,       snap: 0,  adj: 0   },
        {f: -1,    t: -0.00001,  snap: -1, adj: 0.05},
        {f: -2,    t: -0.999999, snap: -2, adj: 0.05},
        {f: -1000, t: -2.001,    snap: -3, adj: 0.10},
      ];
      const match = data.find(row => number >= row.f && number <= row.t);
      return match ? match.adj : null;
    }

    function lowestPrice(priceObject) {
        let Price = Infinity;
        let Reason = '';
        let Source = '';
        let Snapped = Infinity;

        // Iterate over each property in the object
        for (let key in priceObject) {
            if (priceObject.hasOwnProperty(key) && key !== "mark") {
                let [cprice, creason, csource, csnap] = priceObject[key];
                // Check if the current price is lower than the  found so far
                if (cprice && cprice < Price) {
                    Price = cprice;
                    Reason = creason;
                    Source = csource;
                    Snapped = csnap;
                }
            }
        }
        return {Reason, Price, Source, Snapped};
    }

    function ceiling(value, significance) {
        return Math.ceil(value / significance) * significance;
    }

    function pp(value) {
        return (value * 1000).toFixed(2);
    }

    // --------------------extract incoming data------------------------------------------------------
    const targetPrice     = doc.pricing?.v1tp ?? doc.pricing?.v0tp;
    const priceBand       = doc.pricing?.v1stdv ?? doc.pricing?.v0stdv;
    const earlyCustPrice  = doc.hist?.cust?.early_price;
    const earlyCustSeason = doc.hist?.cust?.early_season;
    const earlyMarkPrice  = doc.hist?.market?.early_price;
    const earlyMarkSeason = doc.hist?.market?.early_season;
    const bridgePremium   = doc.pricing?.bridgePremium;
    const bridgedPrice    = Number((earlyCustPrice * (bridgePremium ?? 1.00)).toFixed(5));
    const altHist         = doc.hist?.cust?.ds;
    const iidx            = doc.pricing?.iidx;
    const curr            = doc.customer?.curr;
    const fxrate          = doc.customer?.fxrate ?? 1.0;
    const qty             = doc.inputs?.qty;
    const pltq            = doc.product?.pltq;
    const inflation       = Math.max(...Object.keys(iidx).map(Number));
    const inflationFactor = iidx[inflation];
    const list            = doc.pricing?.list && doc.product?.itemrel === "2" ? doc.pricing?.list : null;
    const listUSD         = list ? list / fxrate :null;

    // ------------------calculate price adders------------------------------------------------------
    let   ltp             = qty < pltq ? 0.15 : null;
    let   anchor_sd       = priceBand ? ((bridgedPrice - targetPrice) / priceBand).toFixed(2) : 0
    let   optimization    = getAdjValue(anchor_sd);
    let   custAdder       = (ltp ?? 0) + optimization + inflationFactor;
    let   markAdder       = (ltp ?? 0) + inflationFactor;
    let   inflReason      = (inflationFactor ?? 0) !== 0 ? ` + ${(inflationFactor * 100).toFixed(1)}% infl`: "";
    let   ltpReason       = ltp                          ? ` + ${(ltp * 100).toFixed(1)}% ltp` : "";
    let   optReason       = (optimization ?? 0) !== 0    ? ` + ${(optimization * 100).toFixed(1)}% opt`: "";
    let   custAddReason   = `${inflReason}${ltpReason}${optReason}`;
    let   markAddReason   = `${inflReason}${ltpReason}`;

    // ------------------start building price options------------------------------------------------
    
    let snap = .0005;
    
    let   custPrice       = Number((bridgedPrice * (1 + custAdder)).toFixed(5));
    let   custSeason      = earlyCustSeason;
    let   custReason      = bridgePremium 
                                ? `${custSeason}  (similar ${altHist} price ${pp(earlyCustPrice)} x ${bridgePremium} = ${pp(bridgedPrice)})${custAddReason}`
                                : `${custSeason} + price ${pp(custPrice)}${custAddReason}`;
    let   markPrice       = earlyMarkPrice * (1 + markAdder);
    let   markReason      = `${earlyMarkSeason} ASP + ${pp(earlyMarkPrice)}${markAddReason}`;
    let   targPrice       = targetPrice * (1 + markAdder);
    let   targReason      = `Target price ${pp(targetPrice)}${markAddReason}`;
    let   listPrice       = listUSD;
    let   listReason      = "";

    let   prices = {
        cust: [custPrice, custReason, "cust", ceiling(custPrice,snap)],
        mark: [markPrice, markReason, "mark", ceiling(markPrice,snap)],
        targ: [targPrice, targReason, "targ", ceiling(targPrice,snap)],
        list: [listPrice, listReason, "list", ceiling(listPrice,snap)]
    }

    let finalPrice = lowestPrice(prices);
    let guidance = {
        prices
        ,finalPrice
    }
    doc.guidance = guidance;
    return doc;
}