Create impact_module.py

impact_module.py

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+# Impact Estimation — rule-based (không có AI model nào làm được cái này)
+# Logic dựa trên các công thức môi trường chuẩn của UNEP và WHO
+
+def estimate_impact(site_name: str, visitor_count: int, combined_risk: float) -> str:
+
+    # ── Tính toán cơ bản ───────────────────────────────────────────────
+    waste_total  = visitor_count * 0.5          # kg/day (UNEP average: 0.5kg/tourist/day)
+    unmanaged    = waste_total * combined_risk   # kg/day không được xử lý đúng
+    water_bod    = round(unmanaged * 0.15, 2)   # kg BOD/day (WHO standard)
+    co2          = round(unmanaged * 2.5, 2) if combined_risk > 0.5 else 0.0  # kg CO2 nếu đốt rác
+    bad_cost     = round(unmanaged * 1.5, 1)    # USD/day (cleanup + fine + health)
+    good_cost    = round(waste_total * 0.4, 1)  # USD/day (proper system)
+    daily_save   = round(max(bad_cost - good_cost, 0), 1)
+    annual_save  = int(daily_save * 365)
+
+    # ── Quy đổi sang đơn vị dễ hiểu ───────────────────────────────────
+    plastic_bags  = int(unmanaged * 50)         # 1kg rác ≈ 50 túi nilon
+    households    = round(unmanaged / 2.0, 1)   # 1 hộ gia đình ≈ 2kg rác/ngày
+    car_km        = int(co2 * 4)                # 1km xe hơi ≈ 0.25kg CO2
+    profit_pct    = round((annual_save / max(visitor_count * 365 * 15, 1)) * 100, 1)
+
+    # ── Bar chart text ─────────────────────────────────────────────────
+    bad_bar  = "█" * min(int(bad_cost / 3), 20)
+    good_bar = "█" * min(int(good_cost / 3), 20)
+    save_bar = "█" * min(int(daily_save / 3), 20)
+
+    # ── Risk level ─────────────────────────────────────────────────────
+    if combined_risk > 0.6:
+        level = "🔴 HIGH"
+        urgency = "Immediate action required. Environmental damage is occurring daily."
+    elif combined_risk > 0.3:
+        level = "🟡 MEDIUM"
+        urgency = "Improvement needed. Costs and risks are accumulating."
+    else:
+        level = "🟢 LOW"
+        urgency = "Good practices in place. Focus on maintaining and improving."
+
+    output = f"""## 🌍 Impact Estimation — {site_name}
+
+**Risk Level: {level}** | Risk Score: {combined_risk:.2f} | Visitors: {visitor_count}/day
+
+> {urgency}
+
+---
+
+### 🌊 Environmental Impact (Current Practice)
+
+| Indicator | Value | Real-world Equivalent |
+|-----------|-------|-----------------------|
+| Total waste generated | {waste_total:.1f} kg/day | {int(waste_total * 50)} plastic bags/day |
+| Unmanaged waste | {unmanaged:.1f} kg/day | Waste of {households} households/day |
+| Water pollution (BOD) | {water_bod} kg/day | Affects {int(water_bod * 1000)} liters of clean water |
+| CO₂ from burning | {co2} kg/day | Like driving {car_km} km by car daily |
+
+---
+
+### 💰 Economic Impact
+
+| Scenario | Daily Cost | Annual Cost |
+|----------|-----------|------------|
+| ❌ Current (poor management) | ${bad_cost} | ${bad_cost*365:,.0f} |
+| ✅ Optimized (proper system) | ${good_cost} | ${good_cost*365:,.0f} |
+| 💚 **Potential savings** | **${daily_save}/day** | **${annual_save:,}/year** |
+
+> 💡 Saving **${annual_save:,}/year** = approximately **{profit_pct}% of estimated annual revenue**
+
+---
+
+### 📊 Cost Comparison
+```
+Current   {bad_bar} ${bad_cost}/day
+Optimized {good_bar} ${good_cost}/day
+Savings   {save_bar} ${daily_save}/day
+```
+
+---
+
+### 💡 If {site_name} improves waste management:
+- Reduce unmanaged waste by **{combined_risk*100:.0f}%**
+- Save **${annual_save:,} USD/year**
+- Protect **{int(water_bod * 1000 * 365):,} liters** of clean water annually
+- Avoid **{co2 * 365:.0f} kg CO₂/year** from improper disposal
+"""
+    return output