Hooks

type Hooks[Input, Row any] struct {
    BeforeCreate, AfterCreate   HookFunc[Input, Row]
    BeforeUpdate, AfterUpdate   HookFunc[Input, Row]
    BeforeDelete, AfterDelete   HookFunc[Input, Row]
    Validate func(ValidateCtx) error
}

type HookCtx[Input, Row any] struct {
    ResourceName string
    Input    *Input          // mutable on Before* (assign back via hc.Input)
    Record   Row             // created/updated row, or pre-delete snapshot
    Previous Row             // pre-image on update/delete
    Actor    any
    DB       *db.DB          // transactional handle — use this, not the outer DB
    Context  context.Context
}

type ValidateCtx struct {
    ResourceName string
    Input    map[string]any
    Previous map[string]any  // nil on create
    Actor    any
    DB       *db.DB
    Context  context.Context
    // + IsCreate() / IsUpdate()
}