add webserver and run_all scripts

7 days ago · ffe7400f99
4 changed files with 107 additions and 0 deletions
--- a/15_dhtsim_usb/python_sqlite/run_all.py
+++ b/15_dhtsim_usb/python_sqlite/run_all.py
@ -0,0 +1,27 @@
 import subprocess
 import sys
 import os
 import time
 SCRIPT_CAPTURE = "capture.py"
 SCRIPT_SERVER = "server.py"
 def run_script_in_new_cmd(script_name):
    try:
        print(f"zkusim spustit {script_name}")
        process = subprocess.Popen(
            ["cmd", "/c", "start", "cmd", "/k", sys.executable, script_name],
            creationflags=subprocess.CREATE_NEW_CONSOLE
        )
        print(f"{script_name} by měl běžet v novém okně")
        return process
    except FileExistsError:
        print(f"{script_name}404")
    except Exception as e:
        print(f"Nastala chyba: {e}")
 if __name__ == "__main__":
    print("zkusim zapnout odposlech a server")
    capture_process = run_script_in_new_cmd(SCRIPT_CAPTURE)
    time.sleep(2)
    server_process = run_script_in_new_cmd(SCRIPT_SERVER)
--- a/15_dhtsim_usb/python_sqlite/server.py
+++ b/15_dhtsim_usb/python_sqlite/server.py
@ -0,0 +1,46 @@
 from flask import Flask, render_template, g
 import sqlite3
 import os
 DB_FILE = "dht_data.sqlite"
 TABLE_NAME = "readings"
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 DATABASE_PATH = os.path.join(BASE_DIR,DB_FILE)
 app = Flask(__name__)
 app.config["DATABASE"] = DATABASE_PATH
 def get_db():
    if "db" not in g:
        try:
            g.db = sqlite3.connect(
                app.config["DATABASE"],
                detect_types=sqlite3.PARSE_DECLTYPES
            )
            g.db.row_factory = sqlite3.Row
        except sqlite3.Error as e:
            print(f"Chyba při pripojeni db: {e}")
    return g.db
@app.teardown_appcontext
 def close_db():
    db = g.pop("db",None)
    if db is not None:
        db.close()
@app.route("/")
 def index():
    data = []
    try:
        db = get_db()
        cursor = db.cursor()
        cursor.execute(f"SELECT timestamp, temperature, humidity FROM {TABLE_NAME} ORDER BY timestamp DESC")
        data = cursor.fetchall()
    except sqlite3.Error as e:
        print(f"Chyba při čtení z db: {e}")
    return render_template("index.html", data=data)
 if __name__ == "__main__":
    print(f"DB se očekává zde: {app.config['DATABASE']}")
    print(f"Server bude dostupný na http://localhost:5000")
    app.run(debug=True, host="0.0.0.0", port=5000)
--- a/15_dhtsim_usb/python_sqlite/templates/index.html
+++ b/15_dhtsim_usb/python_sqlite/templates/index.html
@ -0,0 +1,30 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
 </head>
 <body>
    <h1>VYPIST HODNOT</h1>
    <table>
        <thead>
            <tr>
                <th>cas</th>
                <th>teplota</th>
                <th>vlhkost</th>
            </tr>
        </thead>
        <tbody>
            {% for row in data %}
            <tr>
                <td> {{ row["timestamp"] }}</td>
                <td> {{ row["temperature"] }}</td>
                <td> {{ row["humidity"] }}</td>
            </tr>
            {% endfor %}
        </tbody>
    </table>
 </body>
 </html>
--- a/15_dhtsim_usb/python_sqlite/win_zapnuti_webseveru.bat
+++ b/15_dhtsim_usb/python_sqlite/win_zapnuti_webseveru.bat
@ -0,0 +1,4 @@
 Echo zapnuti serveru;
 .venv\Scripts\activate;
 python server.py;
 pause;