policymap/api/endpoints/get_cosponsored.py

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from flask import Blueprint, jsonify, request
import requests
import csv
import os
import logging
import json
bp = Blueprint('get_cosponsored', __name__)
# Function to retrieve bioguideIds from cache.json file
def get_bioguideIds_from_cache():
CACHE_PATH = os.getenv("CACHE_PATH")
if not CACHE_PATH:
logging.error("CACHE_PATH not found in .env file")
return None
if not os.path.exists(CACHE_PATH):
logging.error("Cache file not found at specified path")
return None
try:
with open(CACHE_PATH, 'r') as file:
cache_data = json.load(file)
bioguideIds = cache_data.get("bioguideIds", [])
if not bioguideIds:
logging.error("bioguideIds not found in cache.json")
return None
return bioguideIds
except Exception as e:
logging.error(f"Failed to read cache file: {str(e)}")
return None
# Function to flatten nested dictionaries and lists
def flatten_dict(d, parent_key='', sep='_'):
items = []
for k, v in d.items():
new_key = f"{parent_key}{sep}{k}" if parent_key else k
if isinstance(v, dict):
items.extend(flatten_dict(v, new_key, sep=sep).items())
elif isinstance(v, list):
for i, item in enumerate(v):
items.append((f"{new_key}_{i}", flatten_dict(item, '', sep=sep)))
else:
items.append((new_key, v if v is not None and v != "" else "NONE"))
return dict(items)
# Function to write data to CSV
def write_to_csv(data, filename):
keys = set()
for item in data:
keys.update(item.keys())
with open(filename, 'w', newline='') as output_file:
dict_writer = csv.DictWriter(output_file, fieldnames=keys)
dict_writer.writeheader()
dict_writer.writerows(data)
@bp.route('/get_cosponsored', methods=['GET'])
def get_cosponsored_legislation():
try:
# Retrieve bioguideIds from cache.json
bioguideIds = get_bioguideIds_from_cache()
if not bioguideIds:
return jsonify({"error": "bioguideIds not found"}), 404
all_data = []
for bioguideId in bioguideIds:
# Make request to Congress API
api_key = os.getenv("CONGRESS_API_KEY")
url = f"https://api.congress.gov/v3/member/{bioguideId}/cosponsored-legislation?api_key={api_key}"
response = requests.get(url)
if response.status_code != 200:
logging.error(f"Failed to retrieve cosponsored legislation for bioguideId {bioguideId}: {response.text}")
return jsonify({"error": f"Failed to retrieve data from Congress API for bioguideId {bioguideId}"}), 500
data = response.json().get("cosponsoredLegislation", [])
# Add cosponsored_by column and handle nested items
for item in data:
flattened_item = flatten_dict(item)
flattened_item["cosponsored_by"] = bioguideId
if not any(flattened_item.values()):
continue # Skip empty rows
all_data.append(flattened_item)
if not all_data:
return jsonify({"error": "No cosponsored legislation found for the given bioguideIds"}), 404
# Write data to CSV
csv_filename = f"cosponsored_legislation.csv"
write_to_csv(all_data, csv_filename)
return jsonify({"message": "Data written to CSV successfully", "filename": csv_filename})
except Exception as e:
logging.error(f"An error occurred: {str(e)}")
return jsonify({"error": str(e)}), 500