afegides noves validacions

processors/checks.py

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+# processors/checks.py
+
+import os
+import re
+
+from core.constants import IMAGE_EXTENSIONS, TRASH_FILES
+from core.result import StepResult
+
+
+def check_trash(work_dir: str) -> StepResult:
+    """Detecta ficheros y directorios de basura presentes en el archivo."""
+    found = []
+    for root, dirs, files in os.walk(work_dir):
+        for name in files:
+            if name.lower() in TRASH_FILES:
+                found.append(os.path.relpath(os.path.join(root, name), work_dir))
+        for name in dirs:
+            if name.lower() in TRASH_FILES:
+                found.append(os.path.relpath(os.path.join(root, name), work_dir) + "/")
+
+    warnings = [f"Basura detectada: {f}" for f in found]
+    return StepResult(step="check_trash", changed=False, warnings=warnings)
+
+
+def _natural_sort_key(name: str):
+    parts = re.split(r"(\d+)", name)
+    return [int(p) if p.isdigit() else p.lower() for p in parts]
+
+
+def check_page_numbering(work_dir: str) -> StepResult:
+    """Detecta páginas mal numeradas: sin zero-padding, padding inconsistente, saltos."""
+    images = []
+    for root, _, files in os.walk(work_dir):
+        for f in files:
+            if os.path.splitext(f)[1].lower() in IMAGE_EXTENSIONS:
+                images.append(f)
+
+    images.sort(key=lambda f: _natural_sort_key(os.path.splitext(f)[0]))
+    total = len(images)
+    if total == 0:
+        return StepResult(step="check_page_numbering", changed=False)
+
+    warnings = []
+
+    # Extraer primer bloque numérico del stem de cada imagen
+    numeric_values = []
+    numeric_widths = []
+    for img in images:
+        stem = os.path.splitext(img)[0]
+        m = re.search(r"(\d+)", stem)
+        if m:
+            numeric_values.append(int(m.group(1)))
+            numeric_widths.append(len(m.group(1)))
+        else:
+            numeric_values.append(None)
+            numeric_widths.append(None)
+
+    has_numbers = [v for v in numeric_values if v is not None]
+    if not has_numbers:
+        return StepResult(step="check_page_numbering", changed=False)
+
+    # Comprobar zero-padding si hay >= 10 imágenes
+    if total >= 10:
+        required_width = len(str(total))
+        widths_set = set(w for w in numeric_widths if w is not None)
+        if len(widths_set) > 1:
+            warnings.append("Padding inconsistente entre páginas")
+        elif widths_set and min(widths_set) < required_width:
+            warnings.append(
+                f"Páginas no zero-padded: se necesita ancho {required_width}, "
+                f"encontrado {min(widths_set)}"
+            )
+
+    # Comprobar secuencia continua
+    sorted_values = sorted(v for v in numeric_values if v is not None)
+    if sorted_values:
+        first = sorted_values[0]
+        expected = list(range(first, first + len(sorted_values)))
+        if sorted_values != expected:
+            warnings.append("Páginas no secuenciales: hay saltos en la numeración")
+
+    return StepResult(step="check_page_numbering", changed=False, warnings=warnings)
+
+
+def check_image_extensions(work_dir: str) -> StepResult:
+    """Detecta mezcla de formatos de imagen en el archivo."""
+    ext_set = set()
+    for root, _, files in os.walk(work_dir):
+        for f in files:
+            ext = os.path.splitext(f)[1].lower()
+            if ext in IMAGE_EXTENSIONS:
+                # Normalizar .jpeg → .jpg
+                normalized = ".jpg" if ext == ".jpeg" else ext
+                ext_set.add(normalized)
+
+    warnings = []
+    if len(ext_set) > 1:
+        exts_str = ", ".join(sorted(ext_set))
+        warnings.append(f"Extensiones de imagen mezcladas: {exts_str}")
+
+    return StepResult(step="check_image_extensions", changed=False, warnings=warnings)
+
+
+def check_comicinfo(work_dir: str) -> StepResult:
+    """Detecta ausencia de ComicInfo.xml."""
+    warnings = []
+    found = False
+    for root, _, files in os.walk(work_dir):
+        for f in files:
+            if f.lower() == "comicinfo.xml":
+                found = True
+                break
+        if found:
+            break
+
+    if not found:
+        warnings.append("Falta ComicInfo.xml")
+
+    return StepResult(step="check_comicinfo", changed=False, warnings=warnings)