import os
import json
import urllib.request
import urllib.error
from datetime import datetime

# Load env
def load_env():
    paths = [".env.notion", "../.env.notion", "/app/.env.notion"]
    for path in paths:
        if os.path.exists(path):
            with open(path) as f:
                for line in f:
                    line = line.strip()
                    if line and not line.startswith('#') and '=' in line:
                        key, val = line.split('=', 1)
                        os.environ[key] = val.strip('"\'')
            break

load_env()
TOKEN = os.environ.get("NOTION_API_KEY")

def request(method, url, data=None):
    if not TOKEN:
        print("ERROR: NOTION_API_KEY not found.")
        return None
        
    headers = {
        "Authorization": f"Bearer {TOKEN}",
        "Content-Type": "application/json",
        "Notion-Version": "2022-06-28"
    }
    
    req = urllib.request.Request(url, headers=headers, method=method)
    if data:
        req.data = json.dumps(data).encode('utf-8')
    
    try:
        with urllib.request.urlopen(req) as resp:
            return json.loads(resp.read().decode('utf-8'))
    except urllib.error.HTTPError as e:
        print(f"HTTP Error {e.code}: {e.read().decode('utf-8')}")
        return None
    except Exception as e:
        print(f"Request Error: {e}")
        return None

def find_db(title):
    res = request("POST", "https://api.notion.com/v1/search", {
        "query": title,
        "filter": {"value": "database", "property": "object"}
    })
    if not res: return None
    for item in res.get("results", []):
        if item["title"][0]["plain_text"].lower() == title.lower():
            return item["id"]
    return None

def query_db(db_id, filter_payload=None):
    payload = {}
    if filter_payload: payload["filter"] = filter_payload
    res = request("POST", f"https://api.notion.com/v1/databases/{db_id}/query", payload)
    return res.get("results", []) if res else []

def get_title(page):
    props = page.get("properties", {})
    for key, val in props.items():
        if val["type"] == "title" and val["title"]:
            return val["title"][0]["plain_text"]
    return "Untitled"

def get_status_options(db_id):
    res = request("GET", f"https://api.notion.com/v1/databases/{db_id}")
    if not res: return []
    props = res.get("properties", {})
    status = props.get("Status", {}).get("status", {})
    return [opt["name"] for opt in status.get("options", [])]

def update_page(page_id, props):
    return request("PATCH", f"https://api.notion.com/v1/pages/{page_id}", {"properties": props})

def append_blocks(page_id, blocks):
    return request("PATCH", f"https://api.notion.com/v1/blocks/{page_id}/children", {"children": blocks})

def create_page(parent_db, props):
    return request("POST", "https://api.notion.com/v1/pages", {
        "parent": {"database_id": parent_db},
        "properties": props
    })