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# příprava projektu |
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Příkazy pro přípravu a instalaci základní knihovny pro API server |
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`python -m venv .venv` |
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`.venv\Scripts\activate` |
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`pip install flask` |
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from flask import Flask, render_template, request, abort |
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import os |
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from datetime import datetime |
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app = Flask(__name__) |
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TEPLOTA_FILE = "teplota.txt" |
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VLHKOST_FILE = "vlhkost.txt" |
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def appendToFile(file,value): |
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try: |
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timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S") |
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with open(file,"a") as f: |
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f.write(f"{timestamp},{value}") |
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return True |
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except Exception as e: |
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print(f"Chyba při zápisu do souboru {file}:{e}") |
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return False |
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def readLastLine(filename): |
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try: |
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with open(filename,"r") as f: |
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lines = f.readlines() |
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for line in reversed(lines): |
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stripped_line = line.strip() |
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if stripped_line: |
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parts = stripped_line.split(",") |
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if len(parts) == 2: |
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return parts[1] |
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else: |
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return stripped_line |
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return "žádná data" |
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except FileNotFoundError: |
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return "Soubor nenalezen" |
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except Exception as e: |
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print(f"Chyba při čtení souboru {filename}:{e}") |
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return "Chyba čtení" |
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@app.route("/") |
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def index(): |
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last_temp = readLastLine(TEPLOTA_FILE) |
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last_hum = readLastLine(VLHKOST_FILE) |
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return render_template("index.html",last_t = last_temp,last_h=last_hum) |
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@app.route("/api/teplota/<int:value>", methods=["GET","POST"]) |
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def record_t(value): |
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if appendToFile(TEPLOTA_FILE,value): |
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return f"Teplota {value}°C uložena",200 |
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else: |
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return "Chyba při ukládání teploty", 500 |
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@app.route("/api/vlhkost/<int:value>", methods=["GET","POST"]) |
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def record_h(value): |
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if appendToFile(VLHKOST_FILE,value): |
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return f"vlhkost {value}°C uložena",200 |
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else: |
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return "Chyba při ukládání teploty", 500 |
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if __name__ == "__main__": |
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app.run(debug=True, host="0.0.0.0", port=5000) |
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<!DOCTYPE html> |
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<html lang="en"> |
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<head> |
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<meta charset="UTF-8"> |
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<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
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<title>Document</title> |
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</head> |
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<body> |
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<h1>Test API zapisovače</h1> |
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<div class="current-data"> |
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<h2>poslední naměřený data</h2> |
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<p>Teplota: {{last_t}}°C</p> |
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<p>Vhkost: {{last_h}}%</p> |
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</div> |
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</body> |
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</html> |
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@ -0,0 +1 @@ |
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2025-04-10 11:38:17,23 |
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@ -0,0 +1 @@ |
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2025-04-10 11:38:30,80 |
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