/** Human labels for provenance / claim field names (API camelCase; snake_case tolerated). Shared by the provenance table and the evidence drawer. */
export const FIELD_LABEL: Record<string, string> = {
  name: "Name",
  status: "Status",
  facilityType: "Type",
  itCapacityMw: "IT capacity",
  totalPowerMw: "Total power",
  plannedPowerMw: "Planned power",
  plannedMw: "Planned power",
  utilityCapacityMw: "Utility capacity",
  gridConnectionMw: "Grid connection",
  ultimateCampusMw: "Ultimate campus build-out",
  mwIsEstimate: "MW estimate flag",
  openedOn: "Opened",
  announcedOn: "Announced",
  constructionStartedOn: "Construction started",
  permitFiledOn: "Permit filed",
  approvedOn: "Approved",
  expectedOpening: "Expected opening",
  investmentUsd: "Investment",
  address: "Address",
  postalCode: "Postal code",
  city: "City",
  regionName: "Region",
  countryIso2: "Country",
  lat: "Latitude",
  lng: "Longitude",
  geo: "Coordinates",
  coordinates: "Coordinates",
  geoPrecision: "Geo precision",
  buildingSqm: "Building area",
  siteAreaHa: "Site area",
  rackCount: "Racks",
  pue: "PUE",
  tier: "Tier",
  coolingType: "Cooling",
  renewableClaim: "Renewable claim",
  certifications: "Certifications",
  website: "Website",
  description: "Description",
  operator: "Operator",
  operatorName: "Operator",
  owner: "Owner",
  ownerName: "Owner",
  developer: "Developer",
  landowner: "Landowner",
  isAi: "AI flag",
  isHyperscale: "Hyperscale flag",
  aliases: "Aliases",
  carriers: "Carriers",
  cloudProviders: "Cloud providers",
  ixps: "Internet exchanges",
  acreage: "Acreage",
  phaseCount: "Phases",
  lastVerified: "Last verified",
  confidence: "Confidence",
  // claim predicates
  it_capacity_mw: "IT capacity",
  critical_power_mw: "Critical power",
  current_power_mw: "Total power",
  planned_power_mw: "Planned power",
  utility_capacity_mw: "Utility capacity",
  grid_connection_mw: "Grid connection",
  ultimate_campus_mw: "Ultimate campus build-out",
  phase_mw: "Phase capacity",
  project_investment_usd: "Project investment",
  campus_investment_usd: "Campus investment",
  company_investment_usd: "Company investment",
  country_program_usd: "Country programme",
  multi_year_capex_usd: "Multi-year capex",
  deal_value_usd: "Deal value",
};

export function fieldLabel(field: string): string {
  if (FIELD_LABEL[field]) return FIELD_LABEL[field];
  const camel = field.replace(/_([a-z])/g, (_, c: string) => c.toUpperCase());
  if (FIELD_LABEL[camel]) return FIELD_LABEL[camel];
  return field.replace(/([a-z])([A-Z])/g, "$1 $2").replace(/_/g, " ").replace(/^./, (c) => c.toUpperCase());
}

export function valueHint(field: string): "mw" | "date" | "usd" | undefined {
  if (/Mw$|_mw$/.test(field)) return "mw";
  if (/On$|_on$|Opening$|_opening$|Verified$/.test(field)) return "date";
  if (/Usd$|_usd$/.test(field)) return "usd";
  return undefined;
}