from rest_framework import serializers

from .models import FileCategory, PipelineExecution, ProcessingPipeline, StoredFile


class StoredFileSerializer(serializers.ModelSerializer):
    class Meta:
        model = StoredFile
        fields = [
            "id",
            "storage_backend",
            "storage_key",
            "original_filename",
            "mime_type",
            "size_bytes",
            "checksum_sha256",
            "is_public",
            "category",
            "metadata",
            "uploaded_by",
            "created_at",
        ]
        read_only_fields = [
            "id",
            "storage_backend",
            "storage_key",
            "checksum_sha256",
            "uploaded_by",
            "created_at",
        ]


class FileCategorySerializer(serializers.ModelSerializer):
    class Meta:
        model = FileCategory
        fields = [
            "slug",
            "name",
            "description",
            "storage_path",
            "allowed_extensions",
            "max_size_bytes",
            "is_active",
            "storage_backend_override",
        ]
        read_only_fields = ["slug"]


class ProcessingPipelineSerializer(serializers.ModelSerializer):
    class Meta:
        model = ProcessingPipeline
        fields = [
            "id",
            "name",
            "slug",
            "steps",
            "is_active",
        ]
        read_only_fields = ["id"]


class PipelineExecutionSerializer(serializers.ModelSerializer):
    class Meta:
        model = PipelineExecution
        fields = [
            "id",
            "file",
            "pipeline",
            "status",
            "started_at",
            "completed_at",
            "output_file",
            "error",
        ]
        read_only_fields = [
            "id",
            "started_at",
            "completed_at",
        ]