Have got session creation working

handlers/imageedit.go

@@ -0,0 +1,67 @@
+package handlers
+
+import (
+	"bufio"
+	"io"
+	"log"
+	"net/http"
+
+	"github.com/gofiber/fiber/v3"
+	"lmika.dev/lmika/weiro/models"
+	"lmika.dev/lmika/weiro/services/imgedit"
+)
+
+type ImageEditHandlers struct {
+	ImageEditService *imgedit.Service
+}
+
+func (ieh ImageEditHandlers) Create(c fiber.Ctx) error {
+	var req struct {
+		BaseUploadID int64 `json:"base_upload"`
+	}
+
+	if err := c.Bind().JSON(&req); err != nil {
+		return err
+	}
+
+	res, err := ieh.ImageEditService.NewSession(c.Context(), req.BaseUploadID)
+	if err != nil {
+		return err
+	}
+
+	var resp = struct {
+		Session    models.ImageEditSession `json:"session"`
+		PreviewURL string                  `json:"preview_url"`
+	}{
+		Session:    res,
+		PreviewURL: res.PreviewURL(),
+	}
+
+	return c.Status(http.StatusCreated).JSON(resp)
+}
+
+func (ieh ImageEditHandlers) Preview(c fiber.Ctx) error {
+	log.Printf("Previewing image edit session %v/%v", c.Params("sessionID"), c.Params("versionID"))
+	sessionID := c.Params("sessionID")
+	versionID := c.Params("versionID")
+
+	mimeTime, rw, err := ieh.ImageEditService.LoadImageVersion(c.Context(), sessionID, versionID)
+	if err != nil {
+		return err
+	}
+
+	c.Set("Content-Type", mimeTime)
+	c.Status(http.StatusOK)
+	return c.SendStreamWriter(func(w *bufio.Writer) {
+		rw, err := rw()
+		if err != nil {
+			return
+		}
+		defer rw.Close()
+
+		_, err = io.Copy(w, rw)
+		if err != nil {
+			return
+		}
+	})
+}