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/* TNFR Implied Cost Pricing Formula
 *
 * This formula calculates prices based on implied hourly rates
 * and allows for additional time and material adjustments.
 *
 * Key difference from legacy: The implied hourly rate is only used
 * for ADDITIONAL hours, not the base hours. This ensures the base
 * price matches the legacy formula when no adjustments are made.
 */

export default () => {
  return {
    vars: {
      materialCostBase: 0,
      timeCostBase: 0,
      additionalTime: 0,
      additionalMaterial: 0,
      hourlyFee: 5.262,
      standardDiscount: 0.5,
      offerModifier: 1,
      salesTax: 1,
      serviceCallFee: 0,
      saDiscount: 1,
      multiplier: 1,
      markupScale: [
        [6.571805718, 1.65],
        [3.943083431, 1.75],
        [2.628722287, 2],
        [1.577233372, 2.25],
        [1.051488915, 2.5],
        [0.5257444574, 2.75],
        [0.2628722287, 3],
        [0.1314361144, 3.5],
        [0, 4],
      ],
    },
    derivedVars: {
      // Steps 1-7: Original calculation up to tier price
      materialWithTax: 0,
      materialMarkup: 2.75,
      materialFee: 0,
      timeFee: 0,
      combinedFee: 0,
      feeWithTrip: 0,
      tierPrice: 0,

      // Steps 8-9: Implied rate calculation
      impliedTimeFee: 0,
      impliedHourlyRate: 0,

      // Steps 10-12: Additional material calculation
      additionalMaterialTaxed: 0,
      additionalMaterialMarkup: 2.75,
      additionalMaterialFee: 0,

      // Steps 13-16: Final calculation
      additionalTimeFee: 0,
      totalMaterialFee: 0,
      tierPlusTime: 0,
      leveledPrice: 0,
      finalPrice: 0,
    },
    operations: [
      // Step 1: Taxed Material Cost
      {
        op: "mult",
        in1: "materialCostBase",
        in2: "salesTax",
        out: "materialWithTax",
      },
      // Step 2: Markup Multiplier
      {
        op: "scale",
        in1: "markupScale",
        in2: "materialWithTax",
        out: "materialMarkup",
      },
      // Step 3: Material Fee
      {
        op: "mult",
        in1: "materialMarkup",
        in2: "materialWithTax",
        out: "materialFee",
      },
      // Step 4: Time Fee
      {
        op: "mult",
        in1: "timeCostBase",
        in2: "hourlyFee",
        out: "timeFee",
      },
      // Step 5: Combined Fee
      {
        op: "add",
        in1: "timeFee",
        in2: "materialFee",
        out: "combinedFee",
      },
      // Step 6: Trip Fee Added
      {
        op: "add",
        in1: "combinedFee",
        in2: "serviceCallFee",
        out: "feeWithTrip",
      },
      // Step 7: Tier Price
      {
        op: "mult",
        in1: "feeWithTrip",
        in2: "multiplier",
        out: "tierPrice",
      },
      // Step 8: Implied Time Fee
      {
        op: "sub",
        in1: "tierPrice",
        in2: "materialFee",
        out: "impliedTimeFee",
      },
      // Step 9: Implied Hourly Rate
      {
        op: "div",
        in1: "impliedTimeFee",
        in2: "timeCostBase",
        out: "impliedHourlyRate",
      },
      // Step 10: Additional Material Taxed
      {
        op: "mult",
        in1: "additionalMaterial",
        in2: "salesTax",
        out: "additionalMaterialTaxed",
      },
      // Step 11: Additional Material Markup
      {
        op: "scale",
        in1: "markupScale",
        in2: "additionalMaterialTaxed",
        out: "additionalMaterialMarkup",
      },
      // Step 12: Additional Material Fee
      {
        op: "mult",
        in1: "additionalMaterialMarkup",
        in2: "additionalMaterialTaxed",
        out: "additionalMaterialFee",
      },
      // Step 13: Additional Time Fee (only for additional hours)
      {
        op: "mult",
        in1: "additionalTime",
        in2: "impliedHourlyRate",
        out: "additionalTimeFee",
      },
      // Step 14: Total Material Fee
      {
        op: "add",
        in1: "materialFee",
        in2: "additionalMaterialFee",
        out: "totalMaterialFee",
      },
      // Step 15: Add tier price and additional time fee
      {
        op: "add",
        in1: "tierPrice",
        in2: "additionalTimeFee",
        out: "tierPlusTime",
      },
      // Step 16: Leveled Price (tierPlusTime + additionalMaterialFee)
      {
        op: "add",
        in1: "tierPlusTime",
        in2: "additionalMaterialFee",
        out: "leveledPrice",
      },
      // Step 17: Final Price (with SA Discount)
      {
        op: "mult",
        in1: "leveledPrice",
        in2: "saDiscount",
        out: "finalPrice",
      },
    ],
  };
};