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Isaak Buslovich 2023-12-22 00:37:25 +01:00
parent a14396e23c
commit 56827a66e8
2 changed files with 213 additions and 0 deletions
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108
index.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>YAML Editor</title>
<link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap" rel="stylesheet">
<style>
body {
font-family: 'Roboto', sans-serif;
background-color: #f8f9fa;
color: #212529;
margin: 0;
padding: 20px;
line-height: 1.6;
}
.container {
max-width: 800px;
margin: auto;
padding: 20px;
background: #fff;
border-radius: 10px;
box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
text-align: center;
}
.button {
background-color: #007bff;
color: #fff;
border: none;
padding: 10px 20px;
margin: 10px 5px;
border-radius: 5px;
cursor: pointer;
transition: background-color 0.3s;
font-weight: 500;
}
.button:hover {
background-color: #0056b3;
}
textarea {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 5px;
margin-top: 10px;
}
</style>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/vanjs-org/van/public/van-1.2.7.nomodule.min.js"></script>
</head>
<body>
<div class="container" id="appContainer">
<label for="yamlContent"></label><textarea id="yamlContent" rows="10"></textarea><br>
<button class="button" onclick="loadData()">Reload Data</button>
<button class="button" onclick="saveData()">Save Data</button>
<div id="statusMessage"></div>
</div>
<script>
function displayStatus(message) {
document.getElementById('statusMessage').textContent = message;
}
async function loadData() {
try {
displayStatus('Loading data...');
const response = await fetch('/data');
if (!response.ok) {
displayStatus(`HTTP error! Status: ${response.status}`);
return;
}
const data = await response.json();
if (typeof data !== 'object' || data === null || !('text' in data)) {
displayStatus('Invalid format in response data');
return;
}
document.getElementById('yamlContent').value = data.text || '';
} catch (error) {
console.error('Error loading data:', error);
displayStatus(`Failed to load data: ${error.message}`);
} finally {
displayStatus('');
}
}
function saveData() {
const content = document.getElementById('yamlContent').value;
displayStatus('Saving data...');
fetch('/data', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ text: content }),
})
.then(response => response.text())
.then(data => {
alert(data);
displayStatus('');
})
.catch(error => {
console.error('Error:', error);
displayStatus('Failed to save data.');
});
}
loadData();
</script>
</body>
</html>

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"""
Flask app for YAML file I/O.
Provides web interface for reading and updating YAML file content.
Handles HTTP GET (view) and POST (update) at '/data', and serves index page at '/'.
Author: Isaak Buslovich
Date: 2023-12-21
"""
from flask import Flask, request, jsonify, send_from_directory
import yaml
from pathlib import Path
import logging
app = Flask(__name__, static_folder='.', static_url_path='')
logging.basicConfig(level=logging.INFO)
DATA_FILE = 'data.yaml'
def read_yaml():
"""
Reads and returns content from the YAML file.
Returns:
dict: A dictionary with the key 'text' containing file content.
None: If an error occurs, along with an error message.
"""
file_path = Path(DATA_FILE)
try:
if not file_path.is_file():
logging.info("YAML file not found. Returning empty data.")
return {'text': ''}, None
with file_path.open() as file:
data = yaml.safe_load(file) or {}
return {'text': data.get('text', '')}, None
except yaml.YAMLError as e:
logging.error(f"YAML Error: {e}", exc_info=True)
return None, f"YAML parsing error: {e}"
except IOError as e:
logging.error(f"IO Error: {e}", exc_info=True)
return None, f"File I/O error: {e}"
except Exception as e:
logging.error(f"Unexpected Error: {e}", exc_info=True)
return None, f"Unexpected error: {e}"
def write_yaml(content):
"""
Writes content to the YAML file.
Args:
content (str): The text content to be saved in the file.
Returns:
bool: True if the operation was successful, False otherwise.
None: If successful, or an error message if an error occurs.
"""
file_path = Path(DATA_FILE)
try:
with file_path.open('w') as file:
yaml.dump({'text': content}, file)
return True, None
except Exception as e:
logging.error(f"Error writing YAML file: {e}", exc_info=True)
return False, f"Error writing file: {e}"
@app.route('/data', methods=['GET', 'POST'])
def handle_data():
"""
Handles GET and POST requests to '/data'.
GET: Returns the content of the YAML file.
POST: Updates the content of the YAML file.
Returns:
JSON response for GET requests.
Text message for POST requests.
"""
if request.method == 'GET':
data, error = read_yaml()
if error:
return error, 500
return jsonify(data), 200
elif request.method == 'POST':
content = request.json.get('text', '')
success, error = write_yaml(content)
if error:
return error, 500
return "File saved successfully", 200
@app.route('/')
def index():
"""
Serves the main index HTML page.
Returns:
HTML content of the main page.
"""
return send_from_directory('.', 'index.html')
if __name__ == '__main__':
app.run(debug=True)