package tui

import (
	"errors"
	"strings"
	"time"

	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
	"github.com/mr-tron/base58"
	"go.etcd.io/bbolt"
)

func OpenDB(path string, writable bool) (*bbolt.DB, error) {
	db, err := bbolt.Open(path, 0o600, &bbolt.Options{
		ReadOnly: !writable,
		Timeout:  100 * time.Millisecond,
	})
	if err != nil {
		return nil, err
	}
	return db, nil
}

func CIDParser(s string) (any, error) {
	data, err := base58.Decode(s)
	if err != nil {
		return nil, err
	}
	var id cid.ID
	if err = id.Decode(data); err != nil {
		return nil, err
	}
	return id, nil
}

func OIDParser(s string) (any, error) {
	data, err := base58.Decode(s)
	if err != nil {
		return nil, err
	}
	var id oid.ID
	if err = id.Decode(data); err != nil {
		return nil, err
	}
	return id, nil
}

func AddressParser(s string) (map[string]any, error) {
	m := make(map[string]any)

	parts := strings.Split(s, "/")
	if len(parts) != 2 {
		return nil, errors.New("expected <cid>/<oid>")
	}
	cnr, err := CIDParser(parts[0])
	if err != nil {
		return nil, err
	}
	obj, err := OIDParser(parts[1])
	if err != nil {
		return nil, err
	}

	m["cid"] = cnr
	m["oid"] = obj

	return m, nil
}

func keyParser(s string) (any, error) {
	if s == "" {
		return nil, errors.New("empty attribute key")
	}
	return s, nil
}

func valueParser(s string) (any, error) {
	if s == "" {
		return nil, errors.New("empty attribute value")
	}
	return s, nil
}

func AttributeParser(s string) (map[string]any, error) {
	m := make(map[string]any)

	parts := strings.Split(s, "/")
	if len(parts) != 1 && len(parts) != 2 {
		return nil, errors.New("expected <key> or <key>/<value>")
	}

	key, err := keyParser(parts[0])
	if err != nil {
		return nil, err
	}
	m["key"] = key

	if len(parts) == 1 {
		return m, nil
	}

	value, err := valueParser(parts[1])
	if err != nil {
		return nil, err
	}
	m["value"] = value

	return m, nil
}