chore: demo fmt

Author: algoflows

packages/econify/INTEGRATION_BRIEF.md

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+# Econify Integration Brief: Enhanced Explain Structure & FX Dates
+
+## Overview
+
+Econify has been enhanced with a **clean component structure** (v0.2.6) and **FX
+date transparency** (v0.2.7) for optimal frontend integration. This brief covers
+the changes needed in your consumer repository.
+
+## 🎯 Key Changes
+
+### 1. Clean Component Structure (v0.2.6)
+
+- **Before**: Nested `units.original/normalized` structure requiring string
+  parsing
+- **After**: Direct access fields: `currency`, `scale`, `timeScale`
+
+### 2. FX Date Transparency (v0.2.7)
+
+- **New**: `FXTable.dates` field for rate timestamps
+- **New**: `explain.fx.asOf` field in metadata
+
+---
+
+## 📊 Updated Explain Structure
+
+### New Structure (v0.2.7)
+
+```typescript
+interface Explain {
+  // 🆕 Direct access components (no string parsing needed)
+  currency?: {
+    original?: string; // "XOF", "EUR"
+    normalized: string; // "USD"
+  };
+  scale?: {
+    original?: Scale; // "billions", "millions"
+    normalized: Scale; // "millions"
+  };
+  timeScale?: {
+    original?: TimeScale; // "quarter", "year"
+    normalized?: TimeScale; // "month"
+  };
+
+  // 🆕 Enhanced FX with dates
+  fx?: {
+    currency: string; // "XOF"
+    base: "USD";
+    rate: number; // 558.16
+    asOf?: string; // "2024-01-15T10:30:00Z" ← NEW!
+    source: "live" | "fallback";
+    sourceId?: string; // "SNP"
+  };
+
+  // Existing fields (unchanged)
+  units?: {
+    originalUnit?: string;
+    normalizedUnit: string;
+    originalFullUnit?: string;
+    normalizedFullUnit?: string;
+  };
+  magnitude?: {/* ... */};
+  periodicity?: {/* ... */};
+  conversion?: {/* ... */};
+}
+```
+
+---
+
+## 🔧 Frontend Integration Changes
+
+### Before (String Parsing Required)
+
+```javascript
+// ❌ Old way - required string parsing
+const unitString = item.explain.units?.originalUnit; // "XOF billions"
+const currency = extractCurrencyFromString(unitString); // Manual parsing
+const scale = extractScaleFromString(unitString); // Manual parsing
+```
+
+### After (Direct Access)
+
+```javascript
+// ✅ New way - direct property access
+const currency = item.explain.currency?.original; // "XOF"
+const scale = item.explain.scale?.original; // "billions"
+const timeScale = item.explain.timeScale?.original; // "quarter"
+
+// ✅ Easy conditional logic
+const currencyChanged =
+  item.explain.currency?.original !== item.explain.currency?.normalized;
+const scaleChanged =
+  item.explain.scale?.original !== item.explain.scale?.normalized;
+
+// ✅ FX date information
+const fxDate = item.explain.fx?.asOf; // "2024-01-15T10:30:00Z"
+const rateAge = fxDate ? new Date() - new Date(fxDate) : null;
+```
+
+---
+
+## 🔄 Required Updates in Consumer Repo
+
+### 1. Update FX Fallback Configuration
+
+**Before:**
+
+```typescript
+const fxFallback = {
+  base: "USD",
+  rates: {
+    XOF: 558.16,
+    EUR: 0.92,
+  },
+};
+```
+
+**After (with SNP database dates):**
+
+```typescript
+const fxFallback = {
+  base: "USD",
+  rates: {
+    XOF: 558.16,
+    EUR: 0.92,
+  },
+  dates: {
+    XOF: "2024-01-15T10:30:00Z", // From SNP database
+    EUR: "2024-01-15T09:45:00Z", // From SNP database
+  },
+};
+```
+
+### 2. Update Frontend Components
+
+**Conversion Display Component:**
+
+```typescript
+const ConversionDisplay = ({ item }: { item: ProcessedData }) => {
+  const { explain } = item;
+
+  return (
+    <div className="conversion-display">
+      {/* Currency conversion */}
+      {explain?.currency && (
+        <div className="currency-conversion">
+          <span className="original">{explain.currency.original}</span>
+          <span className="arrow">→</span>
+          <span className="normalized">{explain.currency.normalized}</span>
+        </div>
+      )}
+
+      {/* Scale conversion */}
+      {explain?.scale && (
+        <div className="scale-conversion">
+          <span className="original">{explain.scale.original}</span>
+          <span className="arrow">→</span>
+          <span className="normalized">{explain.scale.normalized}</span>
+        </div>
+      )}
+
+      {/* FX rate with date */}
+      {explain?.fx && (
+        <div className="fx-info">
+          <span>Rate: {explain.fx.rate}</span>
+          {explain.fx.asOf && (
+            <span className="fx-date">
+              Updated: {formatDate(explain.fx.asOf)}
+            </span>
+          )}
+        </div>
+      )}
+    </div>
+  );
+};
+```
+
+**Tooltip Component:**
+
+```typescript
+const ConversionTooltip = ({ item }: { item: ProcessedData }) => {
+  const { explain } = item;
+
+  const buildTooltipText = () => {
+    const parts = [];
+
+    if (explain?.currency?.original !== explain?.currency?.normalized) {
+      parts.push(
+        `${explain.currency.original} → ${explain.currency.normalized}`,
+      );
+    }
+
+    if (explain?.scale?.original !== explain?.scale?.normalized) {
+      parts.push(`${explain.scale.original} → ${explain.scale.normalized}`);
+    }
+
+    if (explain?.timeScale?.original !== explain?.timeScale?.normalized) {
+      parts.push(
+        `${explain.timeScale.original} → ${explain.timeScale.normalized}`,
+      );
+    }
+
+    return parts.join(", ");
+  };
+
+  return (
+    <div className="tooltip">
+      <div>{buildTooltipText()}</div>
+      {explain?.fx?.asOf && (
+        <div className="rate-freshness">
+          Rate from {formatDate(explain.fx.asOf)}
+        </div>
+      )}
+    </div>
+  );
+};
+```
+
+### 3. Update Data Processing Pipeline
+
+**SNP Database Integration:**
+
+```typescript
+// Fetch FX rates with dates from SNP database
+const fetchFXRatesFromSNP = async (): Promise<FXTable> => {
+  const rates = await snpDatabase.getFXRates();
+
+  return {
+    base: "USD",
+    rates: rates.reduce((acc, rate) => {
+      acc[rate.currency] = rate.value;
+      return acc;
+    }, {}),
+    dates: rates.reduce((acc, rate) => {
+      acc[rate.currency] = rate.updated_at; // ISO string from database
+      return acc;
+    }, {}),
+  };
+};
+
+// Use in econify processing
+const result = await processEconomicData(data, {
+  targetCurrency: "USD",
+  targetMagnitude: "millions",
+  fxFallback: await fetchFXRatesFromSNP(),
+  explain: true,
+});
+```
+
+---
+
+## 🧪 Testing Checklist
+
+- [ ] Update unit tests to use new component structure
+- [ ] Test FX date display in UI components
+- [ ] Verify backward compatibility with existing data
+- [ ] Test SNP database FX date integration
+- [ ] Validate tooltip and conversion displays
+- [ ] Check rate freshness indicators
+
+---
+
+## 📦 Version Requirements
+
+- **Econify**: Upgrade to `v0.2.7` or later
+- **Breaking Changes**: None - fully backward compatible
+- **Optional**: FX dates are optional, existing code works unchanged
+
+---
+
+## 🚀 Benefits After Integration
+
+1. **🎯 No String Parsing**: Direct property access eliminates parsing logic
+2. **📅 Rate Transparency**: Users see when each FX rate was last updated
+3. **🔧 Easier UI Building**: Clean component structure perfect for React/Vue
+4. **🌐 Localization Ready**: Easy to map currency codes to localized names
+5. **📊 Better UX**: Rate freshness indicators improve user confidence
+6. **🔍 Debug Friendly**: Clear separation of conversion components
+
+This structure is optimized for frontend consumption and eliminates the need for
+string parsing while providing full transparency into FX rate freshness.
+
+---
+
+## 📋 Quick Migration Summary
+
+### For the Other Agent:
+
+**Priority 1 - Essential Updates:**
+
+1. Update econify to `v0.2.7`
+2. Add `dates` field to FX fallback configuration from SNP database
+3. Update frontend components to use direct property access:
+   - `item.explain.currency.original` instead of parsing strings
+   - `item.explain.scale.normalized` instead of parsing strings
+   - `item.explain.fx.asOf` for rate timestamps
+
+**Priority 2 - UI Enhancements:**
+
+1. Add rate freshness indicators using `explain.fx.asOf`
+2. Update tooltips to show conversion components clearly
+3. Add conditional styling for currency/scale changes
+
+**Priority 3 - Testing:**
+
+1. Verify all existing functionality works (backward compatible)
+2. Test new FX date display
+3. Validate SNP database integration
+
+**Key Files to Update:**
+
+- FX configuration (add dates from SNP)
+- Conversion display components
+- Tooltip components
+- Data processing pipeline
+- Unit tests
+
+The new structure provides the exact clean component access you requested - no
+more string parsing needed!