import os
import firebase_admin
from firebase_admin import credentials
from firebase_admin import firestore
from google.cloud.firestore_v1.base_query import FieldFilter
import pandas as pd
from datetime import datetime
import sys

# Initialize Firebase Admin SDK
cred = credentials.Certificate(os.getcwd() + '/' + 'keys/hpos-prod-firebase-adminsdk.json')  # Replace with your own service account key path
firebase_admin.initialize_app(cred)

# Get a reference to the Firestore database
db = firestore.client()

# Specify the collections
patient_collection = db.collection("devices")
docs = patient_collection.stream()

# Prepare data to store in CSV
data = []
for doc in docs:
    doc_data = doc.to_dict()

    data.append(doc_data)

# Convert the data to a DataFrame
df = pd.DataFrame(data)
print(df)
print(df.size)

# print("duplicates", len(df['_id']) - len(df['_id'].drop_duplicates()))

# Save the DataFrame to a CSV file
output_filename = f'devices_{datetime.today().strftime("%d_%m_%Y_%H_%M")}.xlsx'

downloads_dir = os.path.join(os.path.expanduser("~"), "Downloads")
output_path = os.path.join(downloads_dir, output_filename)
writer = pd.ExcelWriter(output_path, engine = 'openpyxl')
df.to_excel(writer, sheet_name = 'data', index=False)
# df_count.to_excel(writer, sheet_name = "count")
writer.close()

print(f"Data saved to '{output_path}'")

# Close the Firebase Admin SDK
firebase_admin.delete_app(firebase_admin.get_app())