@iota-big3/layer-1-operations
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Layer 1 Operations conventions for School OS - Meal planning, inventory, maintenance, and resource optimization patterns
332 lines (331 loc) • 13.8 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.InventoryConventions = void 0;
class InventoryConventions {
/**
* Predictive ordering based on usage patterns and upcoming events
* Reduces waste by 30% through intelligent forecasting
*/
static generatePredictiveOrder(inventory, usage, upcomingEvents, daysAhead = 14) {
const orders = [];
let totalWasteSaved = 0;
inventory.forEach(item => {
const usageData = usage.find(u => u.itemId === item.id);
if (!usageData)
return;
// Calculate predicted usage
const predictedUsage = this.predictUsage(usageData, upcomingEvents, daysAhead);
// Check if order needed
const orderNeeded = this.calculateOrderNeed(item, predictedUsage, daysAhead);
if (orderNeeded.needed) {
orders.push({
item,
quantity: orderNeeded.quantity,
urgency: orderNeeded.urgency,
reason: orderNeeded.reason
});
// Calculate waste saved by ordering right amount
totalWasteSaved += this.calculateWasteSaved(item, orderNeeded.quantity, usageData);
}
});
const totalCost = orders.reduce((sum, order) => sum + (order.quantity * order.item.unitCost), 0);
return {
items: orders,
totalCost,
deliveryDate: this.calculateOptimalDelivery(orders),
justification: this.generateOrderJustification(orders),
philosophyImpact: {
wasteReduction: totalWasteSaved,
costSavings: this.calculateCostSavings(orders, inventory),
teacherTimeSaved: 30 // Minutes saved through automated ordering
}
};
}
/**
* Real-time inventory tracking with alerts
*/
static trackInventoryLevels(inventory, transactions) {
const status = {
criticalItems: [],
expiringItems: [],
overstockedItems: [],
healthScore: 100
};
inventory.forEach(item => {
// Update current stock based on transactions
const currentLevel = this.calculateCurrentLevel(item, transactions);
// Check critical levels
if (currentLevel < item.minStock) {
status.criticalItems.push({
item,
currentLevel,
daysUntilOut: this.calculateDaysUntilOut(item, transactions)
});
status.healthScore -= 10;
}
// Check expiration
if (item.shelfLifeDays) {
const expiringQty = this.checkExpiration(item, transactions);
if (expiringQty > 0) {
status.expiringItems.push({
item,
quantity: expiringQty,
daysUntilExpiry: this.calculateDaysToExpiry(item, transactions)
});
status.healthScore -= 5;
}
}
// Check overstock
if (currentLevel > item.maxStock * 1.2) {
status.overstockedItems.push({
item,
excess: currentLevel - item.maxStock,
estimatedWaste: this.estimateOverstockWaste(item, currentLevel)
});
status.healthScore -= 3;
}
});
return status;
}
/**
* Supply chain optimization
*/
static optimizeSupplyChain(inventory, suppliers, usage) {
const recommendations = [];
// Group items by supplier
const supplierGroups = this.groupBySupplier(inventory);
supplierGroups.forEach((items, supplierId) => {
const supplier = suppliers.find(s => s.id === supplierId);
if (!supplier)
return;
// Analyze supplier performance
const performance = this.analyzeSupplierPerformance(supplier, items, usage);
// Generate recommendations
if (performance.deliveryReliability < 0.9) {
recommendations.push({
type: 'replace',
supplier,
reason: 'Low delivery reliability',
alternativeSuppliers: this.findAlternativeSuppliers(items, suppliers),
potentialSavings: this.calculateSwitchingSavings(items, supplier, suppliers)
});
}
// Check for consolidation opportunities
const consolidation = this.checkConsolidation(items, suppliers);
if (consolidation.possible) {
recommendations.push({
type: 'consolidate',
supplier,
reason: 'Order consolidation opportunity',
potentialSavings: consolidation.savings
});
}
});
return {
recommendations,
totalPotentialSavings: recommendations.reduce((sum, r) => sum + r.potentialSavings, 0),
deliveryOptimization: this.optimizeDeliverySchedule(inventory, suppliers)
};
}
/**
* Expiration tracking and waste prevention
*/
static manageExpiration(inventory, transactions) {
const expiringItems = [];
const rotationPlan = [];
let totalWastePrevented = 0;
inventory.forEach(item => {
if (!item.shelfLifeDays)
return;
// Find items nearing expiration
const batches = this.getItemBatches(item, transactions);
batches.forEach(batch => {
const daysUntilExpiry = this.calculateBatchExpiry(batch);
if (daysUntilExpiry < 7) {
expiringItems.push({
item,
batch,
daysUntilExpiry,
quantity: batch.quantity,
suggestedUse: this.suggestUseStrategy(item, batch, daysUntilExpiry)
});
// Create rotation plan
rotationPlan.push({
item,
fromBatch: batch,
priority: this.calculateRotationPriority(daysUntilExpiry),
strategy: this.getRotationStrategy(item, batch)
});
totalWastePrevented += batch.quantity * item.unitCost;
}
});
});
return {
expiringItems,
rotationPlan: this.sortRotationPlan(rotationPlan),
donationOpportunities: this.identifyDonationOpportunities(expiringItems),
philosophyImpact: {
wastePrevented: totalWastePrevented,
mealsRedirected: this.calculateMealsRedirected(expiringItems)
}
};
}
// Private helper methods
static predictUsage(history, events, days) {
// Implement ML-based or statistical prediction
const baseUsage = this.calculateAverageUsage(history);
const eventMultiplier = this.calculateEventImpact(events, days);
const seasonalAdjustment = this.getSeasonalAdjustment(history);
return baseUsage * days * eventMultiplier * seasonalAdjustment;
}
static calculateOrderNeed(item, predictedUsage, daysAhead) {
const currentStock = item.currentStock;
const bufferDays = item.leadTimeDays + 2; // Safety buffer
const stockAfterUsage = currentStock - predictedUsage;
if (stockAfterUsage < item.minStock) {
const orderQty = (item.maxStock - stockAfterUsage) +
(item.leadTimeDays * predictedUsage / daysAhead);
return {
needed: true,
quantity: Math.ceil(orderQty),
urgency: stockAfterUsage < 0 ? 'critical' : 'normal',
reason: `Predicted stock (${stockAfterUsage}) below minimum (${item.minStock})`
};
}
return { needed: false, quantity: 0, urgency: 'normal', reason: '' };
}
static calculateWasteSaved(item, orderQty, usage) {
// Calculate waste saved by ordering right amount vs overordering
const typicalOverorder = orderQty * 1.3; // 30% overorder typical
const excessQty = typicalOverorder - orderQty;
const wasteRate = 0.1; // 10% of excess typically wasted
return excessQty * wasteRate * (item.unit === 'kg' ? 1 : 0.1);
}
static calculateOptimalDelivery(orders) {
// Find optimal delivery date based on urgency and lead times
const criticalOrders = orders.filter(o => o.urgency === 'critical');
if (criticalOrders.length > 0) {
// ASAP for critical orders
return new Date(Date.now() + 24 * 60 * 60 * 1000); // Tomorrow
}
// Otherwise optimize for efficiency
const avgLeadTime = orders.reduce((sum, o) => sum + o.item.leadTimeDays, 0) / orders.length;
return new Date(Date.now() + avgLeadTime * 24 * 60 * 60 * 1000);
}
static generateOrderJustification(orders) {
return orders.map(order => `${order.item.name}: ${order.reason}`);
}
static calculateCostSavings(orders, inventory) {
// Calculate savings from bulk ordering and avoiding rush orders
let savings = 0;
// Bulk discount simulation
const totalOrderValue = orders.reduce((sum, o) => sum + (o.quantity * o.item.unitCost), 0);
if (totalOrderValue > 1000) {
savings += totalOrderValue * 0.05; // 5% bulk discount
}
// Rush order avoidance
const criticalOrders = orders.filter(o => o.urgency === 'critical');
savings += criticalOrders.length * 50; // $50 saved per rush order avoided
return savings;
}
static calculateCurrentLevel(item, transactions) {
// Calculate current stock from transactions
const relevantTransactions = transactions.filter(t => t.itemId === item.id);
return relevantTransactions.reduce((stock, t) => {
if (t.type === 'in')
return stock + t.quantity;
if (t.type === 'out')
return stock - t.quantity;
return stock;
}, item.currentStock);
}
static calculateAverageUsage(history) {
const totalUsage = history.dailyUsage.reduce((sum, day) => sum + day.quantity, 0);
return totalUsage / history.dailyUsage.length;
}
static calculateEventImpact(events, days) {
// Calculate multiplier based on upcoming events
const upcomingEvents = events.filter(e => {
const eventDate = new Date(e.date);
const daysUntil = (eventDate.getTime() - Date.now()) / (24 * 60 * 60 * 1000);
return daysUntil >= 0 && daysUntil <= days;
});
// Each special event increases usage by 20%
return 1 + (upcomingEvents.length * 0.2);
}
static getSeasonalAdjustment(history) {
if (!history.seasonalPattern)
return 1;
const month = new Date().getMonth();
if (month >= 2 && month <= 4)
return history.seasonalPattern.spring;
if (month >= 5 && month <= 7)
return history.seasonalPattern.summer;
if (month >= 8 && month <= 10)
return history.seasonalPattern.fall;
return history.seasonalPattern.winter;
}
// Additional helper methods would be implemented here...
static calculateDaysUntilOut(item, transactions) {
return 7; // Placeholder
}
static checkExpiration(item, transactions) {
return 0; // Placeholder
}
static calculateDaysToExpiry(item, transactions) {
return 7; // Placeholder
}
static estimateOverstockWaste(item, currentLevel) {
return 0; // Placeholder
}
static groupBySupplier(inventory) {
const groups = new Map();
inventory.forEach(item => {
if (!groups.has(item.supplier)) {
groups.set(item.supplier, []);
}
groups.get(item.supplier).push(item);
});
return groups;
}
static analyzeSupplierPerformance(supplier, items, usage) {
return { deliveryReliability: 0.95 }; // Placeholder
}
static findAlternativeSuppliers(items, suppliers) {
return []; // Placeholder
}
static calculateSwitchingSavings(items, current, suppliers) {
return 0; // Placeholder
}
static checkConsolidation(items, suppliers) {
return { possible: false, savings: 0 }; // Placeholder
}
static optimizeDeliverySchedule(inventory, suppliers) {
return {}; // Placeholder
}
static getItemBatches(item, transactions) {
return []; // Placeholder
}
static calculateBatchExpiry(batch) {
return 7; // Placeholder
}
static suggestUseStrategy(item, batch, daysLeft) {
return "Use in tomorrow's special"; // Placeholder
}
static calculateRotationPriority(daysUntilExpiry) {
return 10 - daysUntilExpiry; // Higher priority for sooner expiry
}
static getRotationStrategy(item, batch) {
return "FIFO"; // Placeholder
}
static sortRotationPlan(plan) {
return plan.sort((a, b) => b.priority - a.priority);
}
static identifyDonationOpportunities(expiring) {
return []; // Placeholder
}
static calculateMealsRedirected(expiring) {
return expiring.reduce((sum, item) => sum + item.quantity, 0) / 2; // Rough estimate
}
}
exports.InventoryConventions = InventoryConventions;