gopatterns/pkg/config/config.go

package config

import (
	"fmt"
	"os"

	"gopkg.in/yaml.v3"
)

// Request contains the information to draw a pattern for a specific owner, with corresponding
// sizes and the template name.
type Request struct {
	Sizes    Sizes  `yaml:"sizes,omitempty"`
	Owner    string `yaml:"owner"`
	Template string `yaml:"template,omitempty"`
}

// Sizes defines a map with the size name and the size value.
type Sizes map[string]float64

// LoadConfig reads and decodes a [Request] from a yaml file.
func LoadConfig(name string) (Request, error) {
	fh, err := os.Open(name)
	if err != nil {
		return Request{}, fmt.Errorf("open pattern file %q: %w", name, err)
	}

	pat := Request{}

	err = yaml.NewDecoder(fh).Decode(&pat)
	if err != nil {
		return Request{}, fmt.Errorf("decode content of file %q as yaml: %w", name, err)
	}

	return pat, nil
}