feat: add cover selection workflow and docker profiles

src/utils/cropUtils.js

@@ -80,6 +80,23 @@ const cropImage = async (file, normalizedConfig) => {
   return { blob, url };
 };
 
+const buildCropResult = (imageMeta, blob, url) => ({
+  id: imageMeta.id,
+  filename: imageMeta.file?.name || imageMeta.filename,
+  blob,
+  url,
+  order: imageMeta.order,
+});
+
+export const cropSingleImage = async (image, config) => {
+  if (!config || !config.imageWidth) {
+    throw new Error('Kapak için geçerli bir crop ayarı bulunamadı.');
+  }
+  const normalized = normalizeCropConfig(config);
+  const { blob, url } = await cropImage(image.file, normalized);
+  return buildCropResult(image, blob, url);
+};
+
 export const applyCropToImages = async (images, config) => {
   if (!images?.length) {
     throw new Error('Önce görsel yüklemelisin.');
@@ -91,13 +108,7 @@ export const applyCropToImages = async (images, config) => {
   const results = [];
   for (const image of images) {
     const { blob, url } = await cropImage(image.file, normalized);
-    results.push({
-      id: image.id,
-      filename: image.file.name,
-      blob,
-      url,
-      order: image.order,
-    });
+    results.push(buildCropResult(image, blob, url));
   }
   return results;
 };

src/utils/epubUtils.js

@@ -8,13 +8,38 @@ const base64ToBlob = (base64, mimeType) => {
   return new Blob([bytes], { type: mimeType });
 };
 
+const blobToBase64 = (blob) =>
+  new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onloadend = () => {
+      const result = reader.result;
+      if (typeof result === 'string') {
+        const commaIndex = result.indexOf(',');
+        resolve(result.slice(commaIndex + 1));
+      } else {
+        reject(new Error('Kapak dosyası okunamadı.'));
+      }
+    };
+    reader.onerror = () => reject(new Error('Kapak dosyası okunamadı.'));
+    reader.readAsDataURL(blob);
+  });
+
 const API_BASE = import.meta.env.VITE_API_BASE_URL || 'http://localhost:4000';
 
-export const createEpubFromOcr = async (text) => {
+export const createEpubFromOcr = async (text, coverImage) => {
   if (!text?.trim()) {
     throw new Error('Önce OCR adımını tamamlamalısın.');
   }
 
+  let coverPayload = null;
+  if (coverImage?.blob) {
+    coverPayload = {
+      data: await blobToBase64(coverImage.blob),
+      mimeType: coverImage.blob.type || 'image/png',
+      filename: coverImage.filename || `cover-${Date.now()}.png`,
+    };
+  }
+
   const response = await fetch(`${API_BASE}/generate-epub`, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
@@ -25,6 +50,7 @@ export const createEpubFromOcr = async (text) => {
         author: 'imgPub',
         filename: `imgpub${Date.now()}.epub`,
       },
+      cover: coverPayload,
     }),
   });