package ds_sdk

import (
	"errors"
	"git.sxidc.com/go-tools/utils/fileutils"
	"git.sxidc.com/go-tools/utils/strutils"
	"git.sxidc.com/go-tools/utils/yaml/yaml_loader"
	"git.sxidc.com/service-supports/ds-sdk/client"
	"strings"
)

var sdkInstance *SDK

func GetInstance() *SDK {
	return sdkInstance
}

func InitInstance(token string, baseUrl string, namespace string, dataSource *DataSourceOption, opts ...Option) error {
	if sdkInstance != nil {
		return nil
	}

	options := &Options{
		token:      token,
		baseUrl:    baseUrl,
		namespace:  namespace,
		dataSource: dataSource,
	}

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

	c := client.New(options.timeout)

	err := initNamespace(c, options)
	if err != nil {
		return err
	}

	err = initDataSource(c, options)
	if err != nil {
		return err
	}

	err = initSqlResources(c, options)
	if err != nil {
		return err
	}

	sdkInstance = &SDK{
		options: options,
		client:  c,
	}

	return nil
}

func initNamespace(c *client.Client, options *Options) error {
	namespaceInfos, err := c.GetNamespaces(options.token, options.baseUrl, options.namespace, 1, 1)
	if err != nil {
		return err
	}

	if namespaceInfos != nil && len(namespaceInfos) != 0 {
		return nil
	}

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

	return nil
}

func initDataSource(c *client.Client, options *Options) error {
	dataSourceInfos, err := c.GetDataSources(options.token, options.baseUrl, options.namespace,
		options.dataSource.Name, options.dataSource.Type, 1, 1)
	if err != nil {
		return err
	}

	if dataSourceInfos != nil && len(dataSourceInfos) != 0 {
		return nil
	}

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

	return nil
}

func initSqlResources(c *client.Client, options *Options) error {
	if strutils.IsStringEmpty(options.sqlResourcesDir) {
		return nil
	}

	if !fileutils.PathExists(options.sqlResourcesDir) {
		return errors.New("指定的SQL资源目录不存在")
	}

	files, err := fileutils.GetDirFiles(options.sqlResourcesDir)
	if err != nil {
		return err
	}

	for _, file := range files {
		err := yaml_loader.LoadYamlMapFile(file, func(objectMap map[string]any) error {

		})
		if err != nil {
			return err
		}
	}

	return nil
}