from flask import Blueprint, request, render_template,send_from_directory,current_app
from flask import render_template, request, redirect, flash, send_from_directory
from flask import Blueprint, request
import os
from werkzeug.utils import secure_filename
from utils.file_utils import process_files, allowed_file

index_bp = Blueprint('index', __name__)

@index_bp.route('/', methods=['GET', 'POST'])
def index():
    if request.method == 'POST':
        if 'file' not in request.files or 'upload_folder' not in request.form \
            or 'similarity_threshold' not in request.form or 'time_label' not in request.form:
            flash('所有字段都是必填的')
            return redirect(request.url)

        file = request.files['file']
        upload_folder = request.form['upload_folder']
        similarity_threshold = float(request.form['similarity_threshold'])
        time_label = request.form['time_label']

        if file.filename == '' or not allowed_file(file.filename) or not os.path.exists(upload_folder):
            flash('无效的输入')
            return redirect(request.url)

        if file and allowed_file(file.filename):
            filename = secure_filename(file.filename)
            ref_image_path = os.path.join(current_app.config['UPLOAD_FOLDER'], filename)
            file.save(ref_image_path)

            results = process_files(upload_folder, ref_image_path, similarity_threshold, time_label)
            return render_template('result.html', results=results)

    return render_template('index.html')

@index_bp.route('/uploads/<filename>')
def uploaded_file(filename):
    return send_from_directory(current_app.config['UPLOAD_FOLDER'], filename)