package resource

import (
_ "fmt"
  "io"
  "gopkg.in/yaml.v3"
)

type Document struct {
  Nodes []yaml.Node `yaml:"resources"`
  ResourceDecls []Resource `-`
}

func NewDocument() *Document {
  return &Document {}
}

func (d *Document) Load(r io.Reader) error {
  yamlDecoder := yaml.NewDecoder(r)
  yamlDecoder.Decode(d)
  d.ResourceDecls = make([]Resource, len(d.Nodes))
  for i,node := range(d.Nodes) {
    resourceDecl := NewDeclaration()
    node.Decode(resourceDecl)
    if r,e := ResourceTypes.New(resourceDecl.Type); e == nil {
      resourceDecl.Attributes.Decode(r)
      d.ResourceDecls[i] = r
    }
  }
  return nil
}

func (d *Document) Resources() []Resource {
  return d.ResourceDecls
}