Initial commit

export/epub_builder.py

@@ -0,0 +1,50 @@
+from ebooklib import epub
+from PIL import Image
+import io
+import os
+
+def _to_jpeg(img_path, quality=85):
+    img = Image.open(img_path).convert("L").convert("RGB")
+    buf = io.BytesIO()
+    img.save(buf, format="JPEG", quality=quality, optimize=True)
+    return buf.getvalue()
+
+def build_epub(images, output, title="Manga Book", author="Manga", jpeg_quality=85):
+    book = epub.EpubBook()
+    book.set_title(title)
+    book.set_language("en")
+    book.add_author(author)
+
+    chapters = []
+
+    for i, img_path in enumerate(images):
+        if not os.path.exists(img_path):
+            continue
+
+        img_data = _to_jpeg(img_path, quality=jpeg_quality)
+        img_name = f"images/page_{i}.jpg"
+
+        epub_img = epub.EpubItem(
+            uid=f"img_{i}",
+            file_name=img_name,
+            media_type="image/jpeg",
+            content=img_data,
+        )
+        book.add_item(epub_img)
+
+        c = epub.EpubHtml(title=f"Page {i+1}", file_name=f"p{i}.xhtml", lang="en")
+        c.content = (
+            f'<html><body style="margin:0;padding:0;background:#000;">'
+            f'<img src="{img_name}" style="width:100%;height:auto;display:block;"/>'
+            f'</body></html>'
+        )
+        book.add_item(c)
+        chapters.append(c)
+
+    book.toc = tuple(chapters)
+    book.spine = ["nav"] + chapters
+    book.add_item(epub.EpubNcx())
+    book.add_item(epub.EpubNav())
+
+    epub.write_epub(output, book)
+    return output