package approve_former

const flowTemplate = `apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
  name: {{ .name }}
spec:
  entrypoint: approve-flow
  templates:
    - name: approve-flow
      dag:
        tasks:
          {{- if .nodeContent }}
          {{ .nodeContent }}
          {{- else }}
          - name: node
            template: approval
          {{- end }}
          
    - name: approval
      suspend: {}
      inputs:
          parameters:
            - name: approve
              default: '通过'
              enum:
                  - '通过'
                  - '拒绝'
      outputs:
          parameters:
            - name: approve
              valueFrom:
                  supplied: {}
`

type Flow struct {
	Name  string
	Nodes []Node
}

func NewFlow(name string, nodes ...Node) *Flow {
	return &Flow{
		Name:  name,
		Nodes: nodes,
	}
}

func (flow *Flow) Render() (string, error) {
	nodeContents := make([]string, 0)
	for _, node := range flow.Nodes {
		nodeContent, err := node.Render()
		if err != nil {
			return "", err
		}

		nodeContents = append(nodeContents, nodeContent)
	}

	return render("flow", flowTemplate, map[string]any{
		"name":  flow.Name,
		"nodes": nodeContents,
	})
}