localgreenchain/lib/demand/types.ts

/**
 * Demand Forecasting Types for LocalGreenChain
 * Enables demand-driven, seasonal agriculture planning
 */

// Consumer preference for produce
export interface ConsumerPreference {
  consumerId: string;
  createdAt: string;
  updatedAt: string;

  // Location for local matching
  location: {
    latitude: number;
    longitude: number;
    maxDeliveryRadiusKm: number;
    city?: string;
    region?: string;
  };

  // Dietary preferences
  dietaryType: ('omnivore' | 'vegetarian' | 'vegan' | 'pescatarian' | 'flexitarian')[];
  allergies: string[];
  dislikes: string[];

  // Produce preferences
  preferredCategories: ProduceCategory[];
  preferredItems: ProducePreference[];

  // Quality preferences
  certificationPreferences: ('organic' | 'non_gmo' | 'biodynamic' | 'local' | 'heirloom')[];
  freshnessImportance: 1 | 2 | 3 | 4 | 5;
  priceImportance: 1 | 2 | 3 | 4 | 5;
  sustainabilityImportance: 1 | 2 | 3 | 4 | 5;

  // Delivery preferences
  deliveryPreferences: {
    method: ('home_delivery' | 'pickup_point' | 'farmers_market' | 'csa')[];
    frequency: 'daily' | 'twice_weekly' | 'weekly' | 'bi_weekly' | 'monthly';
    preferredDays: ('monday' | 'tuesday' | 'wednesday' | 'thursday' | 'friday' | 'saturday' | 'sunday')[];
  };

  // Household info
  householdSize: number;
  weeklyBudget?: number;
  currency?: string;
}

export type ProduceCategory =
  | 'leafy_greens'
  | 'root_vegetables'
  | 'nightshades'
  | 'brassicas'
  | 'alliums'
  | 'legumes'
  | 'squash'
  | 'herbs'
  | 'microgreens'
  | 'sprouts'
  | 'mushrooms'
  | 'fruits'
  | 'berries'
  | 'citrus'
  | 'tree_fruits'
  | 'melons'
  | 'edible_flowers';

export interface ProducePreference {
  produceType: string;
  category: ProduceCategory;
  priority: 'must_have' | 'preferred' | 'nice_to_have' | 'occasional';
  weeklyQuantity?: number;
  unit?: string;
  varietyPreferences?: string[];
  seasonalOnly: boolean;
}

// Demand signal from aggregated preferences
export interface DemandSignal {
  id: string;
  timestamp: string;

  // Location scope
  region: {
    centerLat: number;
    centerLon: number;
    radiusKm: number;
    name: string;
  };

  // Time scope
  periodStart: string;
  periodEnd: string;
  seasonalPeriod: 'spring' | 'summer' | 'fall' | 'winter';

  // Aggregated demand
  demandItems: DemandItem[];

  // Statistics
  totalConsumers: number;
  totalWeeklyDemandKg: number;
  confidenceLevel: number; // 0-100

  // Supply status
  currentSupplyKg: number;
  supplyGapKg: number;
  supplyStatus: 'surplus' | 'balanced' | 'shortage' | 'critical';
}

export interface DemandItem {
  produceType: string;
  category: ProduceCategory;
  scientificName?: string;

  // Quantities
  weeklyDemandKg: number;
  monthlyDemandKg: number;
  consumerCount: number;

  // Priority
  aggregatePriority: number; // 1-10
  urgency: 'immediate' | 'this_week' | 'this_month' | 'next_season';

  // Preferences
  preferredCertifications: string[];
  averageWillingPrice: number;
  priceUnit: string;

  // Seasonal info
  inSeason: boolean;
  seasonalAvailability: {
    spring: boolean;
    summer: boolean;
    fall: boolean;
    winter: boolean;
  };

  // Supply matching
  matchedSupply: number;
  matchedGrowers: number;
  gapKg: number;
}

// Grower planting recommendation
export interface PlantingRecommendation {
  id: string;
  timestamp: string;
  growerId: string;

  // Recommendation details
  produceType: string;
  variety?: string;
  category: ProduceCategory;

  // Quantities
  recommendedQuantity: number;
  quantityUnit: 'plants' | 'seeds' | 'kg_expected_yield';
  expectedYieldKg: number;
  yieldConfidence: number; // 0-100

  // Timing
  plantByDate: string;
  expectedHarvestStart: string;
  expectedHarvestEnd: string;
  growingDays: number;

  // Market opportunity
  projectedDemandKg: number;
  projectedPricePerKg: number;
  projectedRevenue: number;
  marketConfidence: number; // 0-100

  // Risk assessment
  riskFactors: RiskFactor[];
  overallRisk: 'low' | 'medium' | 'high';

  // Reasoning
  demandSignalIds: string[];
  explanation: string;
}

export interface RiskFactor {
  type: 'weather' | 'pest' | 'disease' | 'market' | 'oversupply' | 'labor' | 'transport';
  severity: 'low' | 'medium' | 'high';
  description: string;
  mitigationSuggestion?: string;
}

// Seasonal planning
export interface SeasonalPlan {
  id: string;
  growerId: string;
  year: number;
  season: 'spring' | 'summer' | 'fall' | 'winter';

  // Location context
  location: {
    latitude: number;
    longitude: number;
    hardinessZone: string;
    microclimate?: string;
  };

  // Growing capacity
  growingCapacity: {
    outdoorSqMeters?: number;
    greenhouseSqMeters?: number;
    verticalFarmSqMeters?: number;
    hydroponicUnits?: number;
  };

  // Planned crops
  plannedCrops: PlannedCrop[];

  // Expected outcomes
  expectedTotalYieldKg: number;
  expectedRevenue: number;
  expectedCarbonFootprintKg: number;

  // Status
  status: 'draft' | 'confirmed' | 'in_progress' | 'completed';
  completionPercentage?: number;
}

export interface PlannedCrop {
  produceType: string;
  variety?: string;

  // Planting
  plantingDate: string;
  plantingMethod: 'direct_sow' | 'transplant' | 'hydroponic' | 'aeroponic';
  quantity: number;
  quantityUnit: 'plants' | 'seeds' | 'sqm' | 'units';

  // Space allocation
  allocatedSpace: number;
  spaceUnit: 'sqm' | 'sqft' | 'units';
  growingLocation: 'outdoor' | 'greenhouse' | 'vertical_farm' | 'indoor';

  // Expected harvest
  expectedHarvestStart: string;
  expectedHarvestEnd: string;
  expectedYieldKg: number;

  // Market allocation
  preCommittedKg: number;
  preCommittedTo: string[]; // consumer IDs or market names

  // Status
  status: 'planned' | 'planted' | 'growing' | 'harvesting' | 'completed' | 'failed';
  actualYieldKg?: number;
}

// Demand forecast model
export interface DemandForecast {
  id: string;
  generatedAt: string;

  // Scope
  region: string;
  forecastPeriod: {
    start: string;
    end: string;
  };

  // Forecasts by produce type
  forecasts: ProduceForecast[];

  // Model info
  modelVersion: string;
  dataPointsUsed: number;
  lastTrainingDate: string;
}

export interface ProduceForecast {
  produceType: string;
  category: ProduceCategory;

  // Predicted demand
  predictedDemandKg: number;
  confidenceInterval: {
    low: number;
    high: number;
  };
  confidence: number; // 0-100

  // Trends
  trend: 'increasing' | 'stable' | 'decreasing';
  trendStrength: number; // 0-100
  seasonalFactor: number; // multiplier

  // Price prediction
  predictedPricePerKg: number;
  priceConfidenceInterval: {
    low: number;
    high: number;
  };

  // Influencing factors
  factors: ForecastFactor[];
}

export interface ForecastFactor {
  name: string;
  type: 'seasonal' | 'trend' | 'event' | 'weather' | 'economic' | 'preference';
  impact: number; // -100 to +100
  description: string;
}

// Supply commitment from grower
export interface SupplyCommitment {
  id: string;
  growerId: string;
  timestamp: string;

  produceType: string;
  variety?: string;

  // Commitment details
  committedQuantityKg: number;
  availableFrom: string;
  availableUntil: string;

  // Pricing
  pricePerKg: number;
  currency: string;
  minimumOrderKg: number;
  bulkDiscountThreshold?: number;
  bulkDiscountPercent?: number;

  // Quality
  certifications: string[];
  freshnessGuaranteeHours: number;

  // Delivery
  deliveryRadiusKm: number;
  deliveryMethods: ('grower_delivery' | 'customer_pickup' | 'hub_dropoff' | 'third_party')[];

  // Status
  status: 'available' | 'partially_committed' | 'fully_committed' | 'expired';
  remainingKg: number;
}

// Market match between supply and demand
export interface MarketMatch {
  id: string;
  timestamp: string;

  demandSignalId: string;
  supplyCommitmentId: string;

  consumerId: string;
  growerId: string;

  produceType: string;
  matchedQuantityKg: number;

  // Transaction details
  agreedPricePerKg: number;
  totalPrice: number;
  currency: string;

  // Delivery
  deliveryDate: string;
  deliveryMethod: string;
  deliveryLocation: {
    latitude: number;
    longitude: number;
    address?: string;
  };

  // Status
  status: 'pending' | 'confirmed' | 'in_transit' | 'delivered' | 'completed' | 'cancelled';

  // Ratings
  consumerRating?: number;
  growerRating?: number;
  feedback?: string;
}