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backend/src/features/maintenance/migrations/001_create_maintenance_tables.sql

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+-- Create maintenance_logs table
+CREATE TABLE IF NOT EXISTS maintenance_logs (
+  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+  user_id VARCHAR(255) NOT NULL,
+  vehicle_id UUID NOT NULL,
+  date DATE NOT NULL,
+  odometer INTEGER NOT NULL,
+  type VARCHAR(100) NOT NULL, -- oil_change, tire_rotation, etc.
+  description TEXT,
+  cost DECIMAL(10, 2),
+  shop_name VARCHAR(200),
+  notes TEXT,
+  next_due_date DATE,
+  next_due_mileage INTEGER,
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+  
+  CONSTRAINT fk_maintenance_vehicle
+    FOREIGN KEY (vehicle_id)
+    REFERENCES vehicles(id)
+    ON DELETE CASCADE
+);
+
+-- Create maintenance_schedules table
+CREATE TABLE IF NOT EXISTS maintenance_schedules (
+  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+  vehicle_id UUID NOT NULL,
+  type VARCHAR(100) NOT NULL,
+  interval_months INTEGER,
+  interval_miles INTEGER,
+  last_performed_date DATE,
+  last_performed_mileage INTEGER,
+  next_due_date DATE,
+  next_due_mileage INTEGER,
+  is_active BOOLEAN DEFAULT true,
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+  
+  CONSTRAINT fk_schedule_vehicle
+    FOREIGN KEY (vehicle_id)
+    REFERENCES vehicles(id)
+    ON DELETE CASCADE,
+  
+  CONSTRAINT unique_vehicle_maintenance_type
+    UNIQUE(vehicle_id, type)
+);
+
+-- Create indexes
+CREATE INDEX idx_maintenance_logs_user_id ON maintenance_logs(user_id);
+CREATE INDEX idx_maintenance_logs_vehicle_id ON maintenance_logs(vehicle_id);
+CREATE INDEX idx_maintenance_logs_date ON maintenance_logs(date DESC);
+CREATE INDEX idx_maintenance_logs_type ON maintenance_logs(type);
+
+CREATE INDEX idx_maintenance_schedules_vehicle_id ON maintenance_schedules(vehicle_id);
+CREATE INDEX idx_maintenance_schedules_next_due_date ON maintenance_schedules(next_due_date);
+
+-- Add triggers
+CREATE TRIGGER update_maintenance_logs_updated_at
+  BEFORE UPDATE ON maintenance_logs
+  FOR EACH ROW
+  EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_maintenance_schedules_updated_at
+  BEFORE UPDATE ON maintenance_schedules
+  FOR EACH ROW
+  EXECUTE FUNCTION update_updated_at_column();