fix: make engine public

completions.go

@@ -49,7 +49,7 @@ type CompletionResponse struct {
 //
 // The default number of tokens to complete is 1024.
 // Docs: https://beta.openai.com/docs/api-reference/completions
-func (e *engine) Completion(ctx context.Context, opts *CompletionOptions) (*CompletionResponse, error) {
+func (e *Engine) Completion(ctx context.Context, opts *CompletionOptions) (*CompletionResponse, error) {
 	if err := e.validate.StructCtx(ctx, opts); err != nil {
 		return nil, err
 	}

edits.go

@@ -42,7 +42,7 @@ type EditResponse struct {
 // Edit given a prompt and an instruction, the model will return an edited version of the prompt.
 //
 // Docs: https://beta.openai.com/docs/api-reference/edits
-func (e *engine) Edit(ctx context.Context, opts *EditOptions) (*EditResponse, error) {
+func (e *Engine) Edit(ctx context.Context, opts *EditOptions) (*EditResponse, error) {
 	if err := e.validate.StructCtx(ctx, opts); err != nil {
 		return nil, err
 	}

images.go

@@ -55,7 +55,7 @@ type ImageCreateResponse struct {
 // ImageCreate given a prompt and/or an input image, the model will generate a new image.
 //
 // Docs: https://beta.openai.com/docs/api-reference/images/create
-func (e *engine) ImageCreate(ctx context.Context, opts *ImageCreateOptions) (*ImageCreateResponse, error) {
+func (e *Engine) ImageCreate(ctx context.Context, opts *ImageCreateOptions) (*ImageCreateResponse, error) {
 	if err := e.validate.StructCtx(ctx, opts); err != nil {
 		return nil, err
 	}
@@ -116,7 +116,7 @@ type ImageEditResponse struct {
 // ImageEdit creates an edited or extended image given an original image and a prompt.
 //
 // Docs: https://beta.openai.com/docs/api-reference/images/create-edit
-func (e *engine) ImageEdit(ctx context.Context, opts *ImageEditOptions) (*ImageEditResponse, error) {
+func (e *Engine) ImageEdit(ctx context.Context, opts *ImageEditOptions) (*ImageEditResponse, error) {
 	if err := e.validate.StructCtx(ctx, opts); err != nil {
 		return nil, err
 	}
@@ -178,7 +178,7 @@ type ImageVariationResponse struct {
 // ImageVariation creates a variation of a given image.
 //
 // Docs: https://beta.openai.com/docs/api-reference/images/create-variation
-func (e *engine) ImageVariation(ctx context.Context, opts *ImageVariationOptions) (*ImageCreateResponse, error) {
+func (e *Engine) ImageVariation(ctx context.Context, opts *ImageVariationOptions) (*ImageCreateResponse, error) {
 	if err := e.validate.StructCtx(ctx, opts); err != nil {
 		return nil, err
 	}

models.go

@@ -39,7 +39,7 @@ type ListModelsResponse struct {
 // each one such as the owner and availability.
 //
 // Docs: https://beta.openai.com/docs/api-reference/models/list
-func (e *engine) ListModels(ctx context.Context) (*ListModelsResponse, error) {
+func (e *Engine) ListModels(ctx context.Context) (*ListModelsResponse, error) {
 	url := e.apiBaseURL + "/models"
 	req, err := e.newReq(ctx, http.MethodGet, url, "", nil)
 	if err != nil {
@@ -71,7 +71,7 @@ type RetrieveModelResponse struct {
 // about the model such as the owner and permissioning.
 //
 // Docs: https://beta.openai.com/docs/api-reference/models/retrieve
-func (e *engine) RetrieveModel(ctx context.Context, opts *RetrieveModelOptions) (*RetrieveModelResponse, error) {
+func (e *Engine) RetrieveModel(ctx context.Context, opts *RetrieveModelOptions) (*RetrieveModelResponse, error) {
 	if err := e.validate.StructCtx(ctx, opts); err != nil {
 		return nil, err
 	}

openai.go

@@ -14,7 +14,7 @@ import (
 	"github.com/go-playground/validator/v10"
 )
 
-type engine struct {
+type Engine struct {
 	apiKey         string
 	apiBaseURL     string
 	organizationId string
@@ -28,8 +28,8 @@ const (
 )
 
 // New is used to initialize engine.
-func New(apiKey string) *engine {
-	e := &engine{
+func New(apiKey string) *Engine {
+	e := &Engine{
 		apiKey:     apiKey,
 		apiBaseURL: "https://api.openai.com/v1",
 		client:     &http.Client{},
@@ -42,16 +42,16 @@ func New(apiKey string) *engine {
 }
 
 // SetApiKey is used to set API key to access OpenAI API.
-func (e *engine) SetApiKey(apiKey string) {
+func (e *Engine) SetApiKey(apiKey string) {
 	e.apiKey = apiKey
 }
 
 // SetOrganizationId is used to set organization ID if user belongs to multiple organizations.
-func (e *engine) SetOrganizationId(organizationId string) {
+func (e *Engine) SetOrganizationId(organizationId string) {
 	e.organizationId = organizationId
 }
 
-func (e *engine) newReq(ctx context.Context, method string, uri string, postType string, body io.Reader) (*http.Request, error) {
+func (e *Engine) newReq(ctx context.Context, method string, uri string, postType string, body io.Reader) (*http.Request, error) {
 	if ctx == nil {
 		ctx = context.Background() // prevent nil context error
 	}
@@ -76,7 +76,7 @@ func (e *engine) newReq(ctx context.Context, method string, uri string, postType
 	return req, err
 }
 
-func (e *engine) doReq(req *http.Request) (*http.Response, error) {
+func (e *Engine) doReq(req *http.Request) (*http.Response, error) {
 	e.n++ // increment number of requests
 	resp, err := e.client.Do(req)
 	if err != nil {