update_ghost_page.py•7.58 kB
import json
import requests
import os
import base64
import hashlib
import hmac
import time
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
def create_token(key_id: str, key_secret: str) -> str:
"""
Creates a Ghost Admin API JWT token without using PyJWT.
Uses base64 encoding and HMAC-SHA256 for manual JWT creation.
"""
header = {
"alg": "HS256",
"typ": "JWT",
"kid": key_id
}
iat = int(time.time())
payload = {
"iat": iat,
"exp": iat + 300, # Token expires in 5 minutes
"aud": "/admin/"
}
def b64encode(obj):
return base64.urlsafe_b64encode(json.dumps(obj).encode()).rstrip(b'=').decode('utf-8')
header_encoded = b64encode(header)
payload_encoded = b64encode(payload)
message = f"{header_encoded}.{payload_encoded}"
key = bytes.fromhex(key_secret)
signature = hmac.new(key, message.encode(), hashlib.sha256).digest()
signature_encoded = base64.urlsafe_b64encode(signature).rstrip(b'=').decode('utf-8')
return f"{header_encoded}.{payload_encoded}.{signature_encoded}"
def update_ghost_page(page_id: str, title: str = None, content: str = None, status: str = None, featured: bool = None) -> str:
"""
Updates an existing page in Ghost blog.
This function supports two usage scenarios:
1) Updating a page
2) Retrieving the tool's metadata by passing page_id="__tool_info__"
Args:
page_id (str): The ID of the page to update
title (str, optional): New title for the page
content (str, optional): New content/body for the page
status (str, optional): New status (draft, published, scheduled)
featured (bool, optional): Whether this is a featured page
Returns:
str: JSON-formatted string containing the response
"""
if page_id == "__tool_info__":
info = {
"name": "update_ghost_page",
"description": "Updates an existing page in Ghost blog",
"args": {
"page_id": {
"type": "string",
"description": "The ID of the page to update",
"required": True
},
"title": {
"type": "string",
"description": "New title for the page",
"required": False
},
"content": {
"type": "string",
"description": "New content/body for the page",
"required": False
},
"status": {
"type": "string",
"description": "New status (draft, published, scheduled)",
"required": False
},
"featured": {
"type": "boolean",
"description": "Whether this is a featured page",
"required": False
}
}
}
return json.dumps(info)
if not page_id:
return json.dumps({"error": "Page ID is required"})
api_url = os.environ.get("GHOST_API_URL", "https://blog.emmanuelu.com").rstrip("/")
admin_id = "67b2d2824fdabf0001eb99ea"
admin_secret = "100eda163e9fea6906fbd7ddc841812c70561b19ab2e6d7b31f844f6ccd7b05d"
try:
token = create_token(admin_id, admin_secret)
session = requests.Session()
adapter = HTTPAdapter(max_retries=Retry(
total=3,
backoff_factor=1,
status_forcelist=[429, 500, 502, 503, 504]
))
session.mount("http://", adapter)
session.mount("https://", adapter)
headers = {
"Authorization": f"Ghost {token}",
"Accept": "application/json",
"Content-Type": "application/json"
}
# First get the current page to get its updated_at timestamp
get_url = f"{api_url}/ghost/api/admin/pages/{page_id}"
print(f"Fetching current page from: {get_url}")
get_response = session.get(
get_url,
headers=headers,
timeout=30
)
get_response.raise_for_status()
current_page = get_response.json()
if not current_page.get("pages") or len(current_page["pages"]) == 0:
return json.dumps({"error": f"Page {page_id} not found"})
updated_at = current_page["pages"][0]["updated_at"]
# Ghost Admin API endpoint for update
url = f"{api_url}/ghost/api/admin/pages/{page_id}"
# Build update payload with only provided fields
page_data = {"pages": [{"updated_at": updated_at}]} # Include updated_at for collision detection
update_fields = {
"title": title,
"html": content,
"status": status,
"featured": featured
}
for field, value in update_fields.items():
if value is not None:
page_data["pages"][0][field] = value
print(f"Making update request to: {url}")
print(f"Headers: {headers}")
print(f"Payload: {json.dumps(page_data, indent=2)}")
response = session.put(
url,
headers=headers,
json=page_data,
timeout=30
)
response.raise_for_status()
return json.dumps(response.json())
except requests.exceptions.RequestException as e:
error_msg = str(e)
if hasattr(e, 'response') and e.response is not None:
error_msg += f"\nResponse: {e.response.text}"
return json.dumps({"error": f"Network or HTTP error - {error_msg}"})
except Exception as e:
return json.dumps({"error": f"Unexpected error - {str(e)}"})
finally:
session.close()
if __name__ == "__main__":
print("Testing update_ghost_page tool...")
# Example page update
print("\nUpdating page...")
try:
# Get the Contact Us page we created earlier
api_url = os.environ.get("GHOST_API_URL", "http://192.168.50.80:8083").rstrip("/")
admin_id = "67b2d2824fdabf0001eb99ea"
admin_secret = "100eda163e9fea6906fbd7ddc841812c70561b19ab2e6d7b31f844f6ccd7b05d"
token = create_token(admin_id, admin_secret)
pages = requests.get(
f"{api_url}/ghost/api/admin/pages",
params={"filter": "slug:contact-us"},
headers={
"Authorization": f"Ghost {token}",
"Accept": "application/json"
}
).json()
if pages and len(pages.get("pages", [])) > 0:
page_id = pages["pages"][0]["id"]
result = update_ghost_page(
page_id=page_id,
content="""
<h1>Get in Touch</h1>
<p>We'd love to hear from you! Here's how you can reach us:</p>
<ul>
<li>Email: contact@example.com</li>
<li>Twitter: @example</li>
<li>GitHub: github.com/example</li>
</ul>
"""
)
response = json.loads(result)
if "error" in response:
print(f"Error updating page: {response['error']}")
else:
print("Page updated successfully!")
print(json.dumps(response, indent=2))
else:
print("Contact Us page not found")
except Exception as e:
print(f"Error during test: {str(e)}")