mvp implementation

clients/go/officeconvertclient/upload.go

@@ -0,0 +1,43 @@
+package officeconvertclient
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+)
+
+// UploadPPTX uploads a local PPTX using the presigned URL from CreateConversion.
+func (c *Client) UploadPPTX(
+	ctx context.Context,
+	uploadURL string,
+	localPPTXPath string,
+) error {
+	file, err := os.Open(localPPTXPath)
+	if err != nil {
+		return fmt.Errorf("open pptx: %w", err)
+	}
+	defer file.Close()
+
+	return c.uploadReader(ctx, uploadURL, file)
+}
+
+func (c *Client) uploadReader(ctx context.Context, uploadURL string, body io.Reader) error {
+	req, err := http.NewRequestWithContext(ctx, http.MethodPut, uploadURL, body)
+	if err != nil {
+		return fmt.Errorf("build upload request: %w", err)
+	}
+	req.Header.Set("Content-Type", "application/vnd.openxmlformats-officedocument.presentationml.presentation")
+
+	res, err := c.httpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("upload pptx: %w", err)
+	}
+	defer res.Body.Close()
+
+	if res.StatusCode < 200 || res.StatusCode >= 300 {
+		return fmt.Errorf("upload failed with status %d", res.StatusCode)
+	}
+	return nil
+}