astruct/example/main.go

package main

import (
	"encoding/json"
	"errors"
	"fmt"
	"os"
	"time"

	"git.red-green.com/david/astruct"
)

func main() {
	var err error
	_, err = os.Stat("output.go")
	if err != nil {
		if !errors.Is(err, os.ErrNotExist) {
			fmt.Println("Err:", err)
			return
		}
		var a *astruct.Astruct = astruct.NewAstruct("Weather")
		err = a.ReadFile("test.json")
		if err != nil {
			fmt.Println("Err:", err)
			return
		}
		fmt.Println("MapLikes:")
		for name, m := range a.MapLikes {
			if name == "" {
				continue
			}
			fmt.Printf("%s\n", name)
			for k, v := range m {
				fmt.Printf("  '%s' = %s\n", k, v.String())
			}
		}
		fmt.Println("ArrayLikes:")
		for name, a := range a.ArrayLikes {
			if name == "" {
				continue
			}
			fmt.Printf("%s\n", name)
			for i, v := range a {
				fmt.Printf("  %d = %s\n", i, v.String())
			}
		}
		err = a.WriteFile("output.go", "main", 0666)
		if err != nil {
			fmt.Println("Err:", err)
			return
		}
	}
	// --- Test unmarshaling our new go code ---
	var (
		pay  []byte
		data Weather
	)
	pay, err = os.ReadFile("test.json")
	if err != nil {
		fmt.Println("Err:", err)
		return
	}
	err = json.Unmarshal(pay, &data)
	if err != nil {
		fmt.Println("Err:", err)
		return
	}
	fmt.Println("Weather Report:")
	fmt.Printf("%s, %s\n", data.Name, data.Sys.Country)
	fmt.Printf("lon %0.4f, lat %0.4f\n", data.Coord.Lon, data.Coord.Lat)
	fmt.Printf("Currently %s with %0.0f%% cload coverage\n", data.Weather[0].Description, data.Clouds.All)
	fmt.Printf("Wind of %0.1f MPH with gusts of upto %0.1f MPH\n", data.Wind.Speed, data.Wind.Gust)
	fmt.Printf("It feels like %0.1f F, Low is %0.1f F with a high of %0.1f F\n", data.Main.Feels_like, data.Main.Temp_min, data.Main.Temp_max)
	fmt.Printf("Humidity of %0.0f%%\n", data.Main.Humidity)
	at := time.Unix(data.Dt, 0).Round(time.Second)
	fmt.Printf("This report was generated on %s\n", at.Format(time.UnixDate))
	rise := time.Unix(data.Sys.Sunrise, 0).Round(time.Second)
	set := time.Unix(data.Sys.Sunset, 0).Round(time.Second)
	fmt.Printf("Sun rise at %s\n", rise.Format("03:04:05PM"))
	fmt.Printf("Sun set at %s\n", set.Format("03:04:05PM"))
}