package ds_sdk

import (
	"git.sxidc.com/service-supports/ds-sdk/client"
	"strings"
)

var sdkInstance *SDK

func InitInstance(token string, baseUrl string, namespace string, dataSource *DataSource, opts ...Option) error {
	if sdkInstance == nil {
		sdk, err := newSDK(token, baseUrl, namespace, dataSource, opts...)
		if err != nil {
			return err
		}

		sdkInstance = sdk
	}

	return nil
}

func GetInstance() *SDK {
	return sdkInstance
}

type SDK struct {
	options *Options
	client  *client.Client
}

func newSDK(token string, baseUrl string, namespace string, dataSource *DataSource, opts ...Option) (*SDK, error) {
	options := &Options{
		token:      token,
		baseUrl:    baseUrl,
		namespace:  namespace,
		dataSource: dataSource,
	}

	for _, opt := range opts {
		opt(options)
	}

	c := client.New(options.timeout)

	namespaceInfos, err := c.GetNamespaces(token, baseUrl, namespace, 1, 1)
	if err != nil {
		return nil, err
	}

	if namespaceInfos == nil || len(namespaceInfos) == 0 {
		err := c.CreateNamespace(token, baseUrl, namespace)
		if err != nil && !strings.Contains(err.Error(), "已存在") {
			return nil, err
		}
	}

	dataSourceInfos, err := c.GetDataSources(token, baseUrl, namespace,
		options.dataSource.Name, options.dataSource.Type, 1, 1)
	if err != nil {
		return nil, err
	}

	if dataSourceInfos == nil || len(dataSourceInfos) == 0 {
		err := c.CreateDataSource(token, baseUrl, namespace,
			options.dataSource.Name, options.dataSource.Type, options.dataSource.Spec)
		if err != nil && !strings.Contains(err.Error(), "已存在") {
			return nil, err
		}
	}

	return &SDK{
		options: options,
		client:  c,
	}, nil
}