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
import datetime
import sys

cred = credentials.Certificate(os.getcwd() + '/' + 'keys/hpos-prod-firebase-adminsdk.json')
firebase_admin.initialize_app(cred)

db = firestore.client()

patient_collection = db.collection("patientData")
test_collection = db.collection("testData")
start_date = sys.argv[1] # '2023-01-12'
end_date = sys.argv[2] #'2023-07-16'

query = patient_collection.where(filter=FieldFilter("createdAt", ">=", start_date)).where(filter=FieldFilter("createdAt", "<", end_date))
patient_docs = query.stream()

data = []
for patient_doc in patient_docs:
    patient_data = patient_doc.to_dict()
    patient_id = patient_data["_id"]

    test_docs = test_collection.where("_id", "==", patient_id).stream()

    for test_doc in test_docs:
        test_data = test_doc.to_dict()

        combined_data = {**patient_data, **test_data}

        for key, value in combined_data.items():
            if value == "" and key in patient_data:
                combined_data[key] = patient_data[key]

        data.append(combined_data)
    data.append(patient_data)

df = pd.DataFrame(data)
print(df)
print(df.size)

output_filename = "users_test_data.csv"
df.to_csv(output_filename, index=False)

downloads_dir = os.path.join(os.path.expanduser("~"), "Downloads")
output_path = os.path.join(downloads_dir, output_filename)
df.to_csv(output_path, index=False)

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

firebase_admin.delete_app(firebase_admin.get_app())