feat(file-summary): 实现文件处理技能链路

review_agent/file_summary/skills/document_page_count.py

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+from __future__ import annotations
+
+from review_agent.models import FileSummaryItem
+
+from ..services.page_count import SUPPORTED_EXTENSIONS, count_document_pages
+from .base import BaseSkill, SkillResult, WorkflowContext
+
+
+class DocumentPageCountSkill(BaseSkill):
+    name = "document_page_count"
+
+    def run(self, context: WorkflowContext) -> SkillResult:
+        success_files = failed_files = unsupported_files = uncertain_files = total_pages = 0
+        for item in context.batch.items.order_by("file_index"):
+            if item.file_type not in SUPPORTED_EXTENSIONS:
+                item.statistics_status = FileSummaryItem.StatisticsStatus.UNSUPPORTED
+                unsupported_files += 1
+                item.save(update_fields=["statistics_status", "updated_at"])
+                continue
+
+            result = None
+            for attempt in range(1, 4):
+                result = count_document_pages(item.storage_path)
+                item.retry_count = attempt - 1
+                if result.status != "failed":
+                    break
+            item.statistics_status = result.status
+            item.page_count = result.page_count
+            item.error_message = result.error_message
+            item.save(
+                update_fields=[
+                    "statistics_status",
+                    "page_count",
+                    "retry_count",
+                    "error_message",
+                    "updated_at",
+                ]
+            )
+
+            if result.status == FileSummaryItem.StatisticsStatus.SUCCESS:
+                success_files += 1
+                total_pages += result.page_count or 0
+            elif result.status == FileSummaryItem.StatisticsStatus.UNCERTAIN:
+                uncertain_files += 1
+            elif result.status == FileSummaryItem.StatisticsStatus.UNSUPPORTED:
+                unsupported_files += 1
+            else:
+                failed_files += 1
+
+        context.batch.success_files = success_files
+        context.batch.failed_files = failed_files
+        context.batch.unsupported_files = unsupported_files
+        context.batch.uncertain_files = uncertain_files
+        context.batch.total_pages = total_pages
+        context.batch.save(
+            update_fields=[
+                "success_files",
+                "failed_files",
+                "unsupported_files",
+                "uncertain_files",
+                "total_pages",
+            ]
+        )
+        return SkillResult(success=True)