Add new dashboard backend

inventory-server/db/metrics-schema.sql

@@ -43,6 +43,9 @@ CREATE TABLE IF NOT EXISTS product_metrics (
     avg_margin_percent DECIMAL(10,3),
     total_revenue DECIMAL(10,3),
     inventory_value DECIMAL(10,3),
+    cost_of_goods_sold DECIMAL(10,3),
+    gross_profit DECIMAL(10,3),
+    gmroi DECIMAL(10,3),
     -- Purchase metrics
     avg_lead_time_days INT,
     last_purchase_date DATE,
@@ -50,9 +53,18 @@ CREATE TABLE IF NOT EXISTS product_metrics (
     -- Classification
     abc_class CHAR(1),
     stock_status VARCHAR(20),
+    -- Turnover metrics
+    turnover_rate DECIMAL(10,3),
+    -- Lead time metrics
+    current_lead_time INT,
+    target_lead_time INT,
+    lead_time_status VARCHAR(20),
     PRIMARY KEY (product_id),
     FOREIGN KEY (product_id) REFERENCES products(product_id) ON DELETE CASCADE,
-    INDEX idx_metrics_revenue (total_revenue)
+    INDEX idx_metrics_revenue (total_revenue),
+    INDEX idx_metrics_stock_status (stock_status),
+    INDEX idx_metrics_lead_time (lead_time_status),
+    INDEX idx_metrics_turnover (turnover_rate)
 );
 
 -- New table for time-based aggregates
@@ -71,6 +83,8 @@ CREATE TABLE IF NOT EXISTS product_time_aggregates (
     -- Calculated fields
     avg_price DECIMAL(10,3),
     profit_margin DECIMAL(10,3),
+    inventory_value DECIMAL(10,3),
+    gmroi DECIMAL(10,3),
     PRIMARY KEY (product_id, year, month),
     FOREIGN KEY (product_id) REFERENCES products(product_id) ON DELETE CASCADE,
     INDEX idx_date (year, month)
@@ -85,7 +99,10 @@ CREATE TABLE IF NOT EXISTS vendor_metrics (
     order_fill_rate DECIMAL(5,2),
     total_orders INT,
     total_late_orders INT,
-    PRIMARY KEY (vendor)
+    total_purchase_value DECIMAL(10,3),
+    avg_order_value DECIMAL(10,3),
+    PRIMARY KEY (vendor),
+    INDEX idx_vendor_performance (on_time_delivery_rate)
 );
 
 -- Re-enable foreign key checks