// Label mappings for product categories
const CATEGORY_LABELS = {
  deli_salad: "Deli Salad",
  dairy_dip: "Dairy Dip",
  acidified_sauce: "Acidified Sauce",
  rte_meat: "RTE Meat",
  plant_based_spread: "Plant-Based Spread",
  smoked_seafood: "Smoked Seafood",
  cooked_poultry: "Cooked Poultry",
  mayo_dressing: "Mayo Dressing",
  hummus_dip: "Hummus Dip",
  soft_cheese: "Soft Cheese",
};

// Label mappings for packaging types
const PACKAGING_LABELS = {
  tub: "Tub",
  vacuum: "Vacuum Sealed",
  jar: "Jar",
  MAP: "Modified Atmosphere (MAP)",
  tray: "Tray",
  bottle: "Bottle",
  foil: "Foil Pack",
  sachet: "Sachet",
};

// Label mappings for oxygen conditions
const OXYGEN_LABELS = {
  aerobic: "Aerobic",
  anaerobic: "Anaerobic",
  reduced_oxygen: "Reduced Oxygen",
};

// Label mappings for inoculation types
const INOCULATION_LABELS = {
  low_inoculum: "Low Inoculum",
  medium_inoculum: "Medium Inoculum",
  high_inoculum: "High Inoculum",
};

// Label mappings for preservative types
const PRESERVATIVE_LABELS = {
  none: "None",
  sodium_benzoate: "Sodium Benzoate",
  nisin: "Nisin",
  potassium_sorbate: "Potassium Sorbate",
  cultured_dextrose: "Cultured Dextrose",
};

// Label mappings for acidulant types
const ACIDULANT_LABELS = {
  none: "None",
  vinegar: "Vinegar",
  lactic_acid: "Lactic Acid",
  acetic_acid: "Acetic Acid",
  citric_acid: "Citric Acid",
};

// Label mappings for curve modes
const CURVE_MODE_LABELS = {
  both: "Both (ML + Kinetic)",
  ml: "Machine Learning",
  kinetic: "Kinetic Model",
};

// Label mappings for risk classes
const RISK_CLASS_LABELS = {
  low: "Low Risk",
  moderate: "Moderate Risk",
  high: "High Risk",
  critical: "Critical Risk",
};

// Label mappings for confidence labels
const CONFIDENCE_LABELS = {
  low: "Low Confidence",
  moderate: "Moderate Confidence",
  high: "High Confidence",
};

// Label mappings for feature names (used in sensitivity analysis)
const FEATURE_LABELS = {
  storage_temperature_c: "Storage Temperature (°C)",
  initial_inoculum_log_cfu_g: "Initial Inoculum (log CFU/g)",
  ph: "pH",
  aw: "Water Activity (aw)",
  salt_percent: "Salt (%)",
  sugar_percent: "Sugar (%)",
  fat_percent: "Fat (%)",
  target_shelf_life_days: "Target Shelf Life (days)",
  product_category: "Product Category",
  packaging_type: "Packaging Type",
  oxygen_condition: "Oxygen Condition",
  preservative_type: "Preservative Type",
  preservative_flag: "Preservative Enabled",
  acidulant_type: "Acidulant Type",
  inoculation_type: "Inoculation Level",
  time_days: "Time (days)",
};

// Label mappings for direction values
const DIRECTION_LABELS = {
  increases: "Increases Risk",
  decreases: "Decreases Risk",
  increase: "Increases Risk",
  decrease: "Decreases Risk",
};

// Generic fallback formatter: "snake_case" -> "Title Case"
export function toTitleCase(value) {
  if (!value || typeof value !== "string") return value;
  return value
    .split("_")
    .map((word) => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase())
    .join(" ");
}

// Main formatter function
export function formatLabel(value, type = "generic") {
  if (value === null || value === undefined) return "";

  const stringValue = String(value);

  const labelMaps = {
    category: CATEGORY_LABELS,
    packaging: PACKAGING_LABELS,
    oxygen: OXYGEN_LABELS,
    inoculation: INOCULATION_LABELS,
    preservative: PRESERVATIVE_LABELS,
    acidulant: ACIDULANT_LABELS,
    curveMode: CURVE_MODE_LABELS,
    riskClass: RISK_CLASS_LABELS,
    confidence: CONFIDENCE_LABELS,
    feature: FEATURE_LABELS,
    direction: DIRECTION_LABELS,
  };

  const map = labelMaps[type];
  if (map && map[stringValue]) {
    return map[stringValue];
  }

  // Fallback to title case conversion
  return toTitleCase(stringValue);
}

// Convenience functions for common use cases
export const formatCategory = (v) => formatLabel(v, "category");
export const formatPackaging = (v) => formatLabel(v, "packaging");
export const formatOxygen = (v) => formatLabel(v, "oxygen");
export const formatInoculation = (v) => formatLabel(v, "inoculation");
export const formatPreservative = (v) => formatLabel(v, "preservative");
export const formatAcidulant = (v) => formatLabel(v, "acidulant");
export const formatCurveMode = (v) => formatLabel(v, "curveMode");
export const formatRiskClass = (v) => formatLabel(v, "riskClass");
export const formatConfidence = (v) => formatLabel(v, "confidence");
export const formatFeature = (v) => formatLabel(v, "feature");
export const formatDirection = (v) => formatLabel(v, "direction");

// Export option arrays with labels for dropdowns
export const OPTIONS = {
  category: Object.entries(CATEGORY_LABELS).map(([value, label]) => ({ value, label })),
  packaging: Object.entries(PACKAGING_LABELS).map(([value, label]) => ({ value, label })),
  oxygen: Object.entries(OXYGEN_LABELS).map(([value, label]) => ({ value, label })),
  inoculation: Object.entries(INOCULATION_LABELS).map(([value, label]) => ({ value, label })),
  preservative: Object.entries(PRESERVATIVE_LABELS).map(([value, label]) => ({ value, label })),
  acidulant: Object.entries(ACIDULANT_LABELS).map(([value, label]) => ({ value, label })),
  curveMode: Object.entries(CURVE_MODE_LABELS).map(([value, label]) => ({ value, label })),
};