go setps

https://github.com/gookit/gcli/blob/master/interact/steps.go

package interact

import (
   "context"
   "fmt"
)

// StepHandler for steps run
type StepHandler func(ctx context.Context) error

// StepsRun follow the steps to run
type StepsRun struct {
   // record error
   err error
   // mark is stopped
   stopped bool
   // steps length
   length int
   // current step index
   current int
   // Steps step name and handler define.
   // {
   //     // step 1
   //     func(ctx context.Context) { do something.}
   //     // step 2
   //     func(ctx context.Context) { do something.}
   // }
   Steps []StepHandler
}

// Run all steps
func (s *StepsRun) Run() {
   if s.stopped {
      return
   }

   s.length = len(s.Steps)
   if s.length == 0 {
      s.err = fmt.Errorf("no step handlers need to running")
      return
   }

   ctx := context.Background()

   for i, handler := range s.Steps {
      s.current = i

      err := handler(ctx)
      if err != nil {
         s.err = err
         return
      }
   }
}

// Stop set stop run
func (s *StepsRun) Stop() {
   s.stopped = true
}

// Err get error
func (s *StepsRun) Err() error {
   return s.err
}