import csv
from typing import Any
import psycopg2
import boto3
import os
from tqdm import tqdm
from datetime import datetime, timedelta
from pytz import timezone

from dotenv import load_dotenv

load_dotenv("../.env_prod")
# load_dotenv("../.env")

OUTPUT_NAME = "0131-0206"
START_DATE = datetime(2024, 1, 31, tzinfo=timezone('Asia/Singapore'))
END_DATE = datetime(2024, 2, 6, tzinfo=timezone('Asia/Singapore'))
BAD_THRESHOLD = 0.75

REVIEW_ACC_COL = 19
FEEDBACK_ACC_COL = 18
REQUEST_ID_COL = 6

# Database connection details
db_host = os.environ.get('DB_HOST', "")
# db_host = "42.96.42.13"
db_name = os.environ.get('DB_SCHEMA', "")
db_user = os.environ.get('DB_USER', "")
db_password = os.environ.get('DB_PASSWORD', "")

# S3 bucket details
s3_bucket_name = os.environ.get('S3_BUCKET_NAME', "")
s3_folder_prefix = 'sbt_invoice'

# S3 access credentials
access_key = os.environ.get('S3_ACCESS_KEY', "")
secret_key = os.environ.get('S3_SECRET_KEY', "")

class RequestAtt:
    def __init__(self) -> None:
        self.feedback_accuracy = []
        self.reiviewed_accuracy = []
        self.acc = 0
        self.request_id = None
        self.is_bad = False
        self.data = []

    def add_file(self, file):
        self.data.append(file)
        if file[REVIEW_ACC_COL]:
            for key in file[REVIEW_ACC_COL].keys():
                self.feedback_accuracy += file[REVIEW_ACC_COL][key]
        if file[FEEDBACK_ACC_COL]:
            for key in file[FEEDBACK_ACC_COL].keys():
                self.feedback_accuracy += file[FEEDBACK_ACC_COL][key]
    
    def is_bad_image(self):
        fb = min(self.feedback_accuracy)/len(self.feedback_accuracy) if len(self.feedback_accuracy) else None
        rv = min(self.reiviewed_accuracy)/len(self.reiviewed_accuracy) if len(self.reiviewed_accuracy) else None
        if not fb and not rv:
            self.is_bad = False
            return False
        elif fb and rv is None:
            self.is_bad = fb < BAD_THRESHOLD
            self.acc = fb
            return fb < BAD_THRESHOLD
        elif fb and rv:
            self.is_bad = rv < BAD_THRESHOLD
            self.acc = rv
            return rv < BAD_THRESHOLD            
        return False

def get_request(cursor, request_in_id):
    query = "SELECT * FROM fwd_api_subscriptionrequest WHERE id = %s"
    cursor.execute(query, (request_in_id,))
    data = cursor.fetchone()
    return data if data else None

# Request IDs for filtering
def main():
    # Connect to the PostgreSQL database
    conn = psycopg2.connect(
        host=db_host,
        database=db_name,
        user=db_user,
        password=db_password
    )

    # Create a cursor
    cursor = conn.cursor()


    # Execute the SELECT query with the filter
    query = "SELECT * FROM fwd_api_subscriptionrequestfile WHERE created_at >= %s AND created_at <= %s AND feedback_accuracy IS NOT NULL"
    cursor.execute(query, (START_DATE, END_DATE))

    # Fetch the filtered data
    data = cursor.fetchall()

    # Define the CSV file path
    csv_file_path = f'{OUTPUT_NAME}.csv'
    data_dict = {}
    # Filter out requests request that has quality < 75%
    for i, _d in enumerate(data):
        if not data_dict.get(_d[REQUEST_ID_COL], None):
            data_dict[_d[REQUEST_ID_COL]] = RequestAtt()
            data_dict[_d[REQUEST_ID_COL]].request_id = _d[REQUEST_ID_COL]
        data_dict[_d[REQUEST_ID_COL]].add_file(_d)
    
    bad_images = []
    for k in data_dict.keys():
        if data_dict[k].is_bad_image():
            bad_images.append(data_dict[k])

    request_ids = []
    # Write the data to the CSV file
    for bad_image in bad_images:
        request = get_request(cursor, bad_image.request_id)
        if request:
            request_ids.append(request[3])

    # ###################### Get bad requests ######################
    placeholders = ','.join(['%s'] * len(request_ids))

    # Execute the SELECT query with the filter
    query = f"SELECT * FROM fwd_api_subscriptionrequest WHERE request_id IN ({placeholders})"
    cursor.execute(query, request_ids)

    # Fetch the filtered data
    data = cursor.fetchall()

    # Define the CSV file path
    csv_file_path = f'{OUTPUT_NAME}.csv'

    # Write the data to the CSV file
    with open(csv_file_path, 'w', newline='') as csv_file:
        writer = csv.writer(csv_file)
        writer.writerow([desc[0] for desc in cursor.description])  # Write column headers
        writer.writerows(data)  # Write the filtered data rows

    # Close the cursor and database connection
    cursor.close()
    conn.close()

    # Download folders from S3
    s3_client = boto3.client(
        's3',
        aws_access_key_id=access_key,
        aws_secret_access_key=secret_key
    )

    for request_id in tqdm(request_ids):
        folder_key = f"{s3_folder_prefix}/{request_id}/"  # Assuming folder structure like: s3_bucket_name/s3_folder_prefix/request_id/
        local_folder_path = f"{OUTPUT_NAME}/{request_id}/"  # Path to the local folder to save the downloaded files
        os.makedirs(OUTPUT_NAME, exist_ok=True)
        os.makedirs(local_folder_path, exist_ok=True)

        
        # List objects in the S3 folder
        response = s3_client.list_objects_v2(Bucket=s3_bucket_name, Prefix=folder_key)
        objects = response.get('Contents', [])
        
        for s3_object in objects:
            object_key = s3_object['Key']
            local_file_path = local_folder_path + object_key.split('/')[-1]  # Extracting the file name from the object key
            
            # Download the S3 object to the local file
            s3_client.download_file(s3_bucket_name, object_key, local_file_path)

if __name__ == "__main__":
    main()