from rest_framework import serializers
from .models import CertificateOfAnalysis, RegulatoryCert, Document


class CertificateOfAnalysisSerializer(serializers.ModelSerializer):
    class Meta:
        model = CertificateOfAnalysis
        fields = "__all__"
        read_only_fields = ["id", "uploaded_at"]


class RegulatoryCertSerializer(serializers.ModelSerializer):
    class Meta:
        model = RegulatoryCert
        fields = "__all__"
        read_only_fields = ["id", "uploaded_at"]


class DocumentSerializer(serializers.ModelSerializer):
    uploaded_by_name = serializers.CharField(source="uploaded_by.full_name", read_only=True)

    class Meta:
        model = Document
        fields = "__all__"
        read_only_fields = ["id", "uploaded_at"]


class DocumentUploadSerializer(serializers.Serializer):
    file = serializers.FileField()
    batch_id = serializers.UUIDField(required=False, allow_null=True)
    doc_type = serializers.ChoiceField(choices=Document.DocType.choices)
    visibility = serializers.ChoiceField(choices=Document.Visibility.choices, default=Document.Visibility.BUYER)