package ceph

import (
	"bytes"
	"io"
	"net/netip"

	"github.com/gofrs/uuid/v5"
	"gopkg.in/gcfg.v1"
)

// Config represents a ceph.conf file
type Config struct {
	Global GlobalConfig
}

// WriteTo writes a Wireguard [Config] onto the provided [io.Writer]
func (*Config) WriteTo(w io.Writer) (int64, error) {
	var buf bytes.Buffer

	return buf.WriteTo(w)
}

// GlobalConfig represents the [global] section of a ceph.conf file
type GlobalConfig struct {
	FSID         uuid.UUID
	Monitors     []string
	MonitorsAddr []netip.Addr
}

type intermediateConfig struct {
	Global intermediateGlobalConfig
}

func (p intermediateConfig) Export() (*Config, error) {
	var out Config
	var err error

	// [global]
	out.Global, err = p.Global.Export()
	if err != nil {
		return nil, err
	}

	return &out, nil
}

type intermediateGlobalConfig struct {
	FSID              uuid.UUID
	MonInitialMembers string
	MonHost           string
	ClusterNetwork    string
}

func (intermediateGlobalConfig) Export() (GlobalConfig, error) {
	var out GlobalConfig
	var err error

	return out, err
}

func NewConfigFromReader(r io.Reader) (*Config, error) {
	var temp intermediateConfig

	if err := gcfg.ReadInto(&temp, r); err != nil {
		return nil, err
	}

	return temp.Export()
}