package model import ( "time" "github.com/google/uuid" ) type Supplier struct { ID int RequestID uuid.UUID Name string Email string Phone string Address string URL string CreatedAt time.Time } type TokenUsage struct { ID int RequestID uuid.UUID RequestTokenCount int ResponseTokenCount int TokenCost float64 Type string CreatedAt time.Time } type WriteOffHistory struct { OperationID string Data string Amount float64 }