Add backend changes and update scripts

inventory-server/db/metrics-schema.sql

@@ -94,19 +94,86 @@ CREATE TABLE IF NOT EXISTS product_time_aggregates (
     INDEX idx_date (year, month)
 );
 
--- New table for vendor performance
+-- New table for vendor metrics
 CREATE TABLE IF NOT EXISTS vendor_metrics (
     vendor VARCHAR(100) NOT NULL,
-    last_calculated_at TIMESTAMP NOT NULL,
+    last_calculated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    -- Performance metrics
     avg_lead_time_days DECIMAL(10,3),
     on_time_delivery_rate DECIMAL(5,2),
     order_fill_rate DECIMAL(5,2),
-    total_orders INT,
-    total_late_orders INT,
-    total_purchase_value DECIMAL(10,3),
+    total_orders INT DEFAULT 0,
+    total_late_orders INT DEFAULT 0,
+    total_purchase_value DECIMAL(10,3) DEFAULT 0,
     avg_order_value DECIMAL(10,3),
+    -- Product metrics
+    active_products INT DEFAULT 0,
+    total_products INT DEFAULT 0,
+    -- Financial metrics
+    total_revenue DECIMAL(10,3) DEFAULT 0,
+    avg_margin_percent DECIMAL(5,2),
+    -- Status
+    status VARCHAR(20) DEFAULT 'active',
     PRIMARY KEY (vendor),
-    INDEX idx_vendor_performance (on_time_delivery_rate)
+    FOREIGN KEY (vendor) REFERENCES vendor_details(vendor) ON DELETE CASCADE,
+    INDEX idx_vendor_performance (on_time_delivery_rate),
+    INDEX idx_vendor_status (status)
+);
+
+-- New table for category metrics
+CREATE TABLE IF NOT EXISTS category_metrics (
+    category_id BIGINT NOT NULL,
+    last_calculated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    -- Product metrics
+    product_count INT DEFAULT 0,
+    active_products INT DEFAULT 0,
+    -- Financial metrics
+    total_value DECIMAL(10,3) DEFAULT 0,
+    avg_margin DECIMAL(5,2),
+    turnover_rate DECIMAL(10,3),
+    growth_rate DECIMAL(5,2),
+    -- Status
+    status VARCHAR(20) DEFAULT 'active',
+    PRIMARY KEY (category_id),
+    FOREIGN KEY (category_id) REFERENCES categories(id) ON DELETE CASCADE,
+    INDEX idx_category_status (status),
+    INDEX idx_category_growth (growth_rate)
+);
+
+-- New table for vendor time-based metrics
+CREATE TABLE IF NOT EXISTS vendor_time_metrics (
+    vendor VARCHAR(100) NOT NULL,
+    year INT NOT NULL,
+    month INT NOT NULL,
+    -- Order metrics
+    total_orders INT DEFAULT 0,
+    late_orders INT DEFAULT 0,
+    avg_lead_time_days DECIMAL(10,3),
+    -- Financial metrics
+    total_purchase_value DECIMAL(10,3) DEFAULT 0,
+    total_revenue DECIMAL(10,3) DEFAULT 0,
+    avg_margin_percent DECIMAL(5,2),
+    PRIMARY KEY (vendor, year, month),
+    FOREIGN KEY (vendor) REFERENCES vendor_details(vendor) ON DELETE CASCADE,
+    INDEX idx_vendor_date (year, month)
+);
+
+-- New table for category time-based metrics
+CREATE TABLE IF NOT EXISTS category_time_metrics (
+    category_id BIGINT NOT NULL,
+    year INT NOT NULL,
+    month INT NOT NULL,
+    -- Product metrics
+    product_count INT DEFAULT 0,
+    active_products INT DEFAULT 0,
+    -- Financial metrics
+    total_value DECIMAL(10,3) DEFAULT 0,
+    total_revenue DECIMAL(10,3) DEFAULT 0,
+    avg_margin DECIMAL(5,2),
+    turnover_rate DECIMAL(10,3),
+    PRIMARY KEY (category_id, year, month),
+    FOREIGN KEY (category_id) REFERENCES categories(id) ON DELETE CASCADE,
+    INDEX idx_category_date (year, month)
 );
 
 -- New table for category-based sales metrics
@@ -265,4 +332,57 @@ JOIN
 LEFT JOIN 
     orders o ON p.product_id = o.product_id AND o.canceled = false
 GROUP BY 
-    c.id, c.name, p.brand; 
+    c.id, c.name, p.brand; 
+
+-- Create view for vendor performance trends
+CREATE OR REPLACE VIEW vendor_performance_trends AS
+SELECT 
+    v.vendor,
+    v.contact_name,
+    v.status,
+    vm.avg_lead_time_days,
+    vm.on_time_delivery_rate,
+    vm.order_fill_rate,
+    vm.total_orders,
+    vm.total_late_orders,
+    vm.total_purchase_value,
+    vm.avg_order_value,
+    vm.active_products,
+    vm.total_products,
+    vm.total_revenue,
+    vm.avg_margin_percent,
+    CASE 
+        WHEN vm.order_fill_rate >= 95 THEN 'Excellent'
+        WHEN vm.order_fill_rate >= 85 THEN 'Good'
+        WHEN vm.order_fill_rate >= 75 THEN 'Fair'
+        ELSE 'Poor'
+    END as performance_rating
+FROM 
+    vendor_details v
+LEFT JOIN 
+    vendor_metrics vm ON v.vendor = vm.vendor;
+
+-- Create view for category performance trends
+CREATE OR REPLACE VIEW category_performance_trends AS
+SELECT 
+    c.id as category_id,
+    c.name,
+    c.description,
+    c.parent_category,
+    c.status,
+    cm.product_count,
+    cm.active_products,
+    cm.total_value,
+    cm.avg_margin,
+    cm.turnover_rate,
+    cm.growth_rate,
+    CASE 
+        WHEN cm.growth_rate >= 20 THEN 'High Growth'
+        WHEN cm.growth_rate >= 5 THEN 'Growing'
+        WHEN cm.growth_rate >= -5 THEN 'Stable'
+        ELSE 'Declining'
+    END as performance_rating
+FROM 
+    categories c
+LEFT JOIN 
+    category_metrics cm ON c.id = cm.category_id;