Initial commit

internal/config/field.go

@@ -0,0 +1,90 @@
+package config
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+	"text/template"
+
+	"github.com/charmbracelet/lipgloss"
+
+	"github.com/samber/lo"
+	"github.com/spf13/viper"
+	"hub.cybercinch.nz/guisea/go-template/internal/app"
+
+	"hub.cybercinch.nz/guisea/go-template/internal/color"
+)
+
+type Field struct {
+	Key          string
+	DefaultValue any
+	Description  string
+}
+
+// typeName returns the type of the field without reflection
+func (f *Field) typeName() string {
+	switch f.DefaultValue.(type) {
+	case string:
+		return "string"
+	case int:
+		return "int"
+	case bool:
+		return "bool"
+	case []string:
+		return "[]string"
+	case []int:
+		return "[]int"
+	default:
+		return "unknown"
+	}
+}
+
+var prettyTemplate = lo.Must(template.New("pretty").Funcs(template.FuncMap{
+	"faint":  lipgloss.NewStyle().Faint(true).Render,
+	"bold":   lipgloss.NewStyle().Bold(true).Render,
+	"purple": lipgloss.NewStyle().Foreground(color.Purple).Render,
+	"blue":   lipgloss.NewStyle().Foreground(color.Blue).Render,
+	"cyan":   lipgloss.NewStyle().Foreground(color.Cyan).Render,
+	"value":  func(k string) any { return viper.Get(k) },
+	"hl": func(v any) string {
+		switch value := v.(type) {
+		case bool:
+			b := strconv.FormatBool(value)
+			if value {
+				return lipgloss.NewStyle().Foreground(color.Green).Render(b)
+			}
+
+			return lipgloss.NewStyle().Foreground(color.Red).Render(b)
+		case string:
+			return lipgloss.NewStyle().Foreground(color.Yellow).Render(value)
+		default:
+			return fmt.Sprint(value)
+		}
+	},
+	"typename": func(v any) string { return reflect.TypeOf(v).String() },
+}).Parse(`{{ faint .Description }}
+{{ blue "Key:" }}     {{ purple .Key }}
+{{ blue "Env:" }}     {{ .Env }}
+{{ blue "Value:" }}   {{ hl (value .Key) }}
+{{ blue "Default:" }} {{ hl (.DefaultValue) }}
+{{ blue "Type:" }}    {{ typename .DefaultValue }}`))
+
+func (f *Field) Pretty() string {
+	var b strings.Builder
+
+	lo.Must0(prettyTemplate.Execute(&b, f))
+
+	return b.String()
+}
+
+func (f *Field) Env() string {
+	env := strings.ToUpper(EnvKeyReplacer.Replace(f.Key))
+	appPrefix := strings.ToUpper(app.Name + "_")
+
+	if strings.HasPrefix(env, appPrefix) {
+		return env
+	}
+
+	return appPrefix + env
+}