from django.contrib import admin
from .models import Submission, SubmissionFile


class SubmissionFileInline(admin.TabularInline):
    model = SubmissionFile
    extra = 0
    fields = [
        "original_filename",
        "file_size",
        "content_type",
        "ocr_processed",
        "ocr_error",
        "created_at",
    ]
    readonly_fields = [
        "file_size",
        "content_type",
        "ocr_processed",
        "ocr_error",
        "created_at",
    ]

    def get_queryset(self, request):
        return super().get_queryset(request)


@admin.register(Submission)
class SubmissionAdmin(admin.ModelAdmin):
    list_display = ["id_short", "user", "notes_preview", "created_at"]
    list_filter = ["created_at", "updated_at"]
    search_fields = ["id", "user__email", "notes"]
    readonly_fields = ["id", "created_at", "updated_at"]
    inlines = [SubmissionFileInline]

    def get_queryset(self, request):
        return super().get_queryset(request).select_related("user")

    @admin.display(description="ID")
    def id_short(self, obj):
        return str(obj.id)[:8]

    @admin.display(description="Notes")
    def notes_preview(self, obj):
        if obj.notes:
            return obj.notes[:50] + "..." if len(obj.notes) > 50 else obj.notes
        return "-"


@admin.register(SubmissionFile)
class SubmissionFileAdmin(admin.ModelAdmin):
    list_display = [
        "original_filename",
        "submission_id",
        "file_size",
        "content_type",
        "ocr_processed",
        "created_at",
    ]
    list_filter = ["content_type", "ocr_processed", "created_at"]
    search_fields = ["original_filename", "submission__id"]
    readonly_fields = ["file_size", "content_type", "created_at", "updated_at"]

    def get_queryset(self, request):
        return super().get_queryset(request).select_related("submission")

    @admin.display(description="Submission ID")
    def submission_id(self, obj):
        return str(obj.submission.id)[:8]