"""Submission routes - anonymous feedback submission"""
from flask import Blueprint, render_template, request, redirect, url_for, flash, abort
from app.models.product import Product
from app.services.feedback_storage import FeedbackStorageService
from app.utils.file_validator import validate_file, scan_file_for_viruses


bp = Blueprint('submission', __name__, url_prefix='/submit')


@bp.route('/<product_slug>', methods=['GET'])
def form(product_slug):
    """Display feedback submission form

    Args:
        product_slug: Product submission URL slug

    Returns:
        Rendered submission form template or 404
    """
    # Load product by slug
    product = Product.get_by_slug(product_slug)

    if not product:
        abort(404, description="Product not found")

    # Check if product is archived
    if product.is_archived():
        abort(404, description="This product is no longer accepting feedback")

    return render_template('submission/form.html', product=product)


@bp.route('/<product_slug>', methods=['POST'])
def submit(product_slug):
    """Process feedback submission

    Args:
        product_slug: Product submission URL slug

    Returns:
        Redirect to success page or error page
    """
    # Load product by slug
    product = Product.get_by_slug(product_slug)

    if not product:
        abort(404, description="Product not found")

    # Check if product is archived
    if product.is_archived():
        abort(404, description="This product is no longer accepting feedback")

    # Get form data
    feedback_text = request.form.get('feedback_text', '').strip()

    # Get uploaded files
    uploaded_files = request.files.getlist('files')
    # Filter out empty file inputs
    files = [f for f in uploaded_files if f and f.filename != '']

    # Validation: Must provide either text or files
    if not feedback_text and not files:
        abort(400, description="Please provide either feedback text or attachments")

    # Validation: Maximum 3 files
    if len(files) > 3:
        abort(400, description="Maximum 3 attachments allowed")

    # Validate each file
    for file in files:
        is_valid, error_message = validate_file(file)
        if not is_valid:
            abort(400, description=error_message)

        # Scan for viruses
        is_clean, virus_message = scan_file_for_viruses(file)
        if not is_clean:
            abort(400, description=f"File rejected: {virus_message}")

    # Save feedback
    try:
        feedback = FeedbackStorageService.save_complete_feedback(
            product_id=product.product_id,
            content_text=feedback_text if feedback_text else None,
            files=files if files else None
        )

        return render_template('submission/success.html',
                             product=product,
                             feedback_id=feedback.feedback_id)

    except Exception as e:
        # Log error
        from flask import current_app
        current_app.logger.error(f"Error saving feedback: {e}")

        return render_template('submission/error.html',
                             product=product,
                             error_message="An error occurred while saving your feedback. Please try again."), 500