app.py

import os
import sqlite3
import random
import string
import datetime
import re
from flask import Flask, render_template, request, redirect, url_for, Response
from waitress import serve

app = Flask(__name__)
PORT = 5050
BASE_DIR = os.getcwd()
DB_FOLDER = os.path.join(BASE_DIR, 'database')
DB_PATH = os.path.join(DB_FOLDER, 'codes.db')

if not os.path.exists(DB_FOLDER):
    os.makedirs(DB_FOLDER)

def clean_title(text):
    text = text.replace(" ", "_")
    text = re.sub(r'[^a-zA-Z0-9\-_]', '', text)
    return text.strip('_')

def init_db():
    conn = sqlite3.connect(DB_PATH)
    c = conn.cursor()
    c.execute('''CREATE TABLE IF NOT EXISTS pastes 
                 (id TEXT PRIMARY KEY, title TEXT, content TEXT, lang TEXT, created_at TEXT, expire_at TEXT)''')
    try:
        c.execute("ALTER TABLE pastes ADD COLUMN title TEXT")
    except:
        pass
    now = datetime.datetime.now().strftime("%Y-%m-%d %H:%M")
    c.execute("DELETE FROM pastes WHERE expire_at < ?", (now,))
    conn.commit()
    conn.close()

def generate_unique_id():
    chars = string.ascii_letters + string.digits
    conn = sqlite3.connect(DB_PATH)
    c = conn.cursor()
    while True:
        new_id = ''.join(random.choice(chars) for _ in range(8))
        c.execute("SELECT id FROM pastes WHERE id=?", (new_id,))
        if not c.fetchone():
            conn.close()
            return new_id

init_db()

@app.errorhandler(404)
def page_not_found(e):
    return render_template('404.html'), 404

@app.route('/', methods=['GET', 'POST'])
def create():
    if request.method == 'POST':
        raw_title = request.form.get('title', '').strip()
        content = request.form.get('content')
        lang = request.form.get('lang')
        duration = request.form.get('duration')

        title = clean_title(raw_title)
        if not title:
            title = "Untitled_Code"
        
        if not content or not content.strip():
            return render_template('create.html', error="Kod alanı boş olamaz!")

        short_id = generate_unique_id()
        now = datetime.datetime.now()
        
        if duration == "1":
            expire_dt = now + datetime.timedelta(hours=1)
        elif duration == "24":
            expire_dt = now + datetime.timedelta(days=1)
        else:
            expire_dt = now + datetime.timedelta(days=7)

        expire_db = expire_dt.strftime("%Y-%m-%d %H:%M")
        created_db = now.strftime("%Y-%m-%d %H:%M")

        conn = sqlite3.connect(DB_PATH)
        c = conn.cursor()
        c.execute("INSERT INTO pastes (id, title, content, lang, created_at, expire_at) VALUES (?, ?, ?, ?, ?, ?)",
                  (short_id, title, content, lang, created_db, expire_db))
        conn.commit()
        conn.close()

        return redirect(url_for('view_paste', short_id=short_id))

    return render_template('create.html')

@app.route('/<short_id>')
def view_paste(short_id):
    now_str = datetime.datetime.now().strftime("%Y-%m-%d %H:%M")
    conn = sqlite3.connect(DB_PATH)
    c = conn.cursor()
    c.execute("SELECT title, content, lang, created_at, expire_at FROM pastes WHERE id=?", (short_id,))
    data = c.fetchone()
    conn.close()

    if not data or data[4] < now_str:
        return render_template('404.html'), 404

    c_dt = datetime.datetime.strptime(data[3], "%Y-%m-%d %H:%M")
    e_dt = datetime.datetime.strptime(data[4], "%Y-%m-%d %H:%M")
    
    formatted_created = c_dt.strftime("%d.%m.%Y %H:%M")
    formatted_expire = e_dt.strftime("%d.%m.%Y %H:%M")

    return render_template('view.html', 
                           short_id=short_id,
                           title=data[0],
                           content=data[1], 
                           lang=data[2], 
                           date=formatted_created,
                           expire=formatted_expire)

@app.route('/download/<short_id>')
def download_paste(short_id):
    conn = sqlite3.connect(DB_PATH)
    c = conn.cursor()
    c.execute("SELECT content, lang, title FROM pastes WHERE id=?", (short_id,))
    data = c.fetchone()
    conn.close()
    if not data: return render_template('404.html'), 404
    
    extensions = {'python':'py', 'javascript':'js', 'html':'html', 'css':'css', 'sql':'sql', 'bash':'sh'}
    ext = extensions.get(data[1], 'txt')
    
    filename = f"{data[2]}_{short_id}.{ext}"

    return Response(
        data[0],
        mimetype="text/plain",
        headers={"Content-disposition": f"attachment; filename={filename}"}
    )

if __name__ == '__main__':
    print(f"Rapne - Code Başlatılıyor... Port: {PORT}")
    serve(app, host='0.0.0.0', port=PORT)