Immunization Types Reference

export type ImmunizationStatus = 'given' | 'due' | 'overdue' | 'upcoming' | 'missed'

export type DoseNumber = '0' | '1' | '2' | '3' | '4' | '5' | 'booster'

export const DOSE_NUMBER_LABELS: Record<DoseNumber, string> = {
  '0':    'Birth Dose (0)',
  '1':    '1st Dose (1)',
  '2':    '2nd Dose (2)',
  '3':    '3rd Dose (3)',
  '4':    '4th Dose (4)',
  '5':    '5th Dose (5)',
  booster: 'Booster',
}

export type AdministrationRoute = 'IM' | 'SC' | 'ID' | 'oral' | 'nasal' | 'other'

export const ADMIN_ROUTE_LABELS: Record<AdministrationRoute, string> = {
  IM:     'Intramuscular (IM)',
  SC:     'Subcutaneous (SC)',
  ID:     'Intradermal (ID)',
  oral:   'Oral',
  nasal:  'Nasal',
  other:  'Other',
}

export type AdministrationSite = 'left_deltoid' | 'right_deltoid' | 'left_thigh' | 'right_thigh' | 'buttock' | 'other'

export const ADMIN_SITE_LABELS: Record<AdministrationSite, string> = {
  left_deltoid:  'Left Deltoid',
  right_deltoid: 'Right Deltoid',
  left_thigh:    'Left Anterolateral Thigh',
  right_thigh:   'Right Anterolateral Thigh',
  buttock:        'Buttock',
  other:          'Other',
}

export type AdverseReaction = 'none' | 'mild' | 'moderate' | 'severe' | 'anaphylaxis'

export const ADVERSE_REACTION_LABELS: Record<AdverseReaction, string> = {
  none:         'None',
  mild:         'Mild (soreness, low-grade fever)',
  moderate:     'Moderate (high fever, rash)',
  severe:       'Severe (hospitalization)',
  anaphylaxis:  'Anaphylaxis',
}

export const ADVERSE_REACTION_COLORS: Record<AdverseReaction, string> = {
  none:        'bg-green-100 text-green-700',
  mild:       'bg-yellow-100 text-yellow-700',
  moderate:   'bg-orange-100 text-orange-700',
  severe:     'bg-red-100 text-red-700',
  anaphylaxis: 'bg-purple-100 text-purple-700',
}

export interface VaccinationEntry {
  // Identity
  id: string               // Client-generated unique ID (e.g., `vax-${Date.now()}`)
  name: string             // Vaccine name (e.g., "DPT-1", "BCG", "Hep B - Birth dose")
  ageRange: string          // Schedule age label (e.g., "Birth", "6 weeks", "5-6 years")

  // Scheduling
  doseNumber?: DoseNumber   // Position in series ('0' through '5', or 'booster')
  dueDate?: string         // YYYY-MM-DD — when the vaccine is due
  givenDate?: string       // YYYY-MM-DD — when the vaccine was actually administered
  status: ImmunizationStatus // Auto-computed: given | due | overdue | upcoming | missed

  // Clinical documentation (for regulatory compliance)
  lotNumber?: string           // Vaccine lot/batch number (for recall tracing)
  expirationDate?: string       // YYYY-MM-DD — vaccine expiry date
  manufacturer?: string        // Manufacturer name (e.g., "Serum Institute of India")
  administeredBy?: string       // Name of the administering provider
  administrationSite?: AdministrationSite  // Anatomical injection site
  administrationRoute?: AdministrationRoute // IM, SC, ID, oral, etc.
  adverseReaction?: AdverseReaction       // none | mild | moderate | severe | anaphylaxis

  // Notes
  notes?: string           // Free-text notes for this specific vaccination
}

export interface ImmunizationRecordData {
  vaccinations: VaccinationEntry[]  // Ordered list of vaccination records
  generalNotes?: string              // Encounter-level notes about immunization
}

export const IMMUNIZATION_STATUS_LABELS: Record<ImmunizationStatus, string> = {
  given:    'Given',
  due:      'Due',
  overdue:  'Overdue',
  upcoming: 'Upcoming',
  missed:   'Missed',
}

export const IMMUNIZATION_STATUS_COLORS: Record<ImmunizationStatus, string> = {
  given:    'bg-green-100 text-green-700',
  due:      'bg-blue-100 text-blue-700',
  overdue:  'bg-red-100 text-red-700',
  upcoming: 'bg-yellow-100 text-yellow-700',
  missed:   'bg-gray-100 text-gray-500',
}

export interface StandardScheduleEntry {
  name: string            // Vaccine display name
  ageRange: string         // Human-readable age label (e.g., "6 weeks")
  ageDays: number          // Days from birth to when vaccine is due
  doseNumber: DoseNumber   // Position in the vaccine series
  route?: AdministrationRoute // Default administration route
}

export function calculateDueDate(birthDate: string, ageDays: number): string
// birthDate: YYYY-MM-DD string
// ageDays: number of days from birth
// Returns: YYYY-MM-DD string

calculateDueDate('2025-01-15', 42)  // Returns '2025-02-26' (42 days later = 6 weeks)

export interface PediatricExaminationData {
  feedingType?: FeedingType
  feedingNotes?: string
  vaccinationStatus?: VaccinationStatus  // Summary status: up_to_date | delayed | incomplete | not_started
  immunizationNotes?: string
  milestones: MilestoneEntry[]
  birthWeight?: string
  birthHistory?: string
  generalNotes?: string
}

export interface GrowthAssessmentData {
  currentPercentiles: GrowthPercentile   // weight, height, headCircumference, BMI, etc.
  previousPercentiles?: GrowthPercentile  // For comparison
  growthConcerns?: string
  nutritionalAdvice?: string
}

export type PediatricProcedureType =
  | 'vaccination'
  | 'newborn_screening'
  | 'developmental_screening'
  | 'allergy_testing'
  | 'tonsillectomy'
  | 'other'

export type PediatricProcedureStatus = 'planned' | 'in_progress' | 'completed' | 'cancelled'