package virtbuf

// functions to import and export the protobuf
// data to and from config files

import (
	"fmt"
	"os"
	"path/filepath"

	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/encoding/prototext"
)

func WriteConfig(d *Droplets, h *Hypervisors, e *Events) bool {
	if !d.WriteConfigJSON() {
		return false
	}
	if !d.WriteConfigTEXT() {
		return false
	}

	if e.WriteConfigJSON() {
		return false
	}
	if e.WriteConfigTEXT() {
		return false
	}
	return true
}

// read in events.json
func ReadEventsConfig() (*Events, error) {
	e := new(Events)
	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.json")
	data, err := os.ReadFile(fullname)
	if err != nil {
		// log.Info("open config file :", err)
		return nil, err
	}
	err = e.UnmarshalJSON(data)
	if err != nil {
		// log.Info("read json failed", err)
		return nil, err
	}

	return e, nil
}

// export as json
func (e *Events) WriteConfigJSON() bool {
	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.json")
	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
	defer cfgfile.Close()
	if err != nil {
		fmt.Println("open config file :", err)
		return false
	}
	text := e.FormatJSON()
	fmt.Fprintln(cfgfile, text)
	fmt.Println("Write:", fullname, "OK")
	return true
}

// export as prototext
func (e *Events) WriteConfigTEXT() bool {
	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.text")
	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
	defer cfgfile.Close()
	if err != nil {
		fmt.Println("open config file :", err)
		return false
	}
	text := e.FormatTEXT()
	fmt.Fprintln(cfgfile, text)
	fmt.Println("Write:", fullname, "OK")
	return true
}

// export as json
func (d *Droplets) WriteConfigJSON() bool {
	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.json")
	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
	defer cfgfile.Close()
	if err != nil {
		fmt.Println("open config file :", err)
		return false
	}
	text := d.FormatJSON()
	fmt.Fprintln(cfgfile, text)
	fmt.Println("Write:", fullname, "OK")
	return true
}

// export as prototext
func (d *Droplets) WriteConfigTEXT() bool {
	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.text")
	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
	defer cfgfile.Close()
	if err != nil {
		fmt.Println("open config file :", err)
		return false
	}
	text := d.FormatTEXT()
	fmt.Fprintln(cfgfile, text)
	fmt.Println("Write:", fullname, "OK")
	return true
}

// human readable JSON
func (c *Cluster) FormatJSON() string {
	return protojson.Format(c)
}

func (d *Droplets) FormatJSON() string {
	return protojson.Format(d)
}

func (e *Events) FormatJSON() string {
	return protojson.Format(e)
}

// apparently this isn't supposed to be used?
// https://protobuf.dev/reference/go/faq/#unstable-text
// this is a shame because this is much nicer output than JSON Format()
func (c *Cluster) FormatTEXT() string {
	return prototext.Format(c)
}

func (d *Droplets) FormatTEXT() string {
	return prototext.Format(d)
}

func (e *Events) FormatTEXT() string {
	return prototext.Format(e)
}

// marshal
func (c *Cluster) MarshalJSON() ([]byte, error) {
	return protojson.Marshal(c)
}

func (d *Droplets) MarshalJSON() ([]byte, error) {
	return protojson.Marshal(d)
}

func (e *Events) MarshalJSON() ([]byte, error) {
	return protojson.Marshal(e)
}

// unmarshal
func (c *Cluster) UnmarshalJSON(data []byte) error {
	return protojson.Unmarshal(data, c)
}

func (d *Droplets) UnmarshalJSON(data []byte) error {
	return protojson.Unmarshal(data, d)
}

func (e *Events) UnmarshalJSON(data []byte) error {
	return protojson.Unmarshal(data, e)
}