from pathlib import Path
import datetime
from typing import List, Dict
import logging

from dotenv import dotenv_values
from woocommerce import API

from camisatoshi_wordpress_reports.order import Order

API_CONFIG = dotenv_values(
    dotenv_path=Path.home() / Path(".camisatoshi-wordpress-reports/.env")
)
WC_API = API(
    url=API_CONFIG["URL"],
    consumer_key=API_CONFIG["CONSUMER_KEY"],
    consumer_secret=API_CONFIG["CONSUMER_SECRET"],
    version=API_CONFIG["VERSION"],
)

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger()


def check_health():
    logger.info(
        f"Connecting to the configured WooCommerce at {API_CONFIG['URL']}"
    )

    try:
        api_reported_version = WC_API.get("").json()["namespace"]
    except:
        raise ConnectionError(
            "There was an issue connecting to the WooCommerce API."
        )

    logger.info(f"Informed version of the API: {API_CONFIG['VERSION']}")
    logger.info(f"Version reported by the API itself: {api_reported_version}")

    logger.info("Connection successful. The API is reachable.")


def generate_um_report(start_date: str, end_date: str):
    start_date = datetime.datetime.strptime(start_date, "%Y-%m-%d").isoformat()
    end_date = datetime.datetime.strptime(end_date, "%Y-%m-%d").isoformat()

    logger.info(f"Fetching orders between {start_date} and {end_date}.")

    orders_in_date_range = WC_API.get(
        endpoint="orders",
        params={
            "after": start_date,
            "before": end_date,
            "per_page": 100,
            "status": "processing,completed",
        },
    ).json()

    orders_in_date_range = [Order.from_api_response(order_raw_data) for order_raw_data in orders_in_date_range]

    logger.info(f"Received {len(orders_in_date_range)} orders.")

    skus_to_keep = ["TEE-05-BBO-BLACK"]

    logger.info(f"Filtering by SKUs: {skus_to_keep}")
    relevant_orders = filter_orders_by_sku(
        orders_in_date_range, skus=skus_to_keep
    )
    logger.info(f"Kept {len(relevant_orders)} orders.")

    logger.info("Checking if all orders have the sats_received entry filled in.")
    orders_without_sats_received = find_orders_without_sats_received(relevant_orders)

    if orders_without_sats_received:
        logger.warning(
            f"There are {len(orders_without_sats_received)} orders without a properly filled sats_received entry.")
        logger.warning(f"See details below.")
        logger.warning(orders_without_sats_received)
        raise ValueError("Not all orders have sats_received. Can't compute sats owed without that.")

    # Fetch orders:
    #   - Between specific dates
    #   - That contain the hardcoded products
    #   - That have been paid, hence status is either processing or completed
    #   - That have not been settled yet (is_settled_with_um: 0)

    # Print to screen:
    #   - Orders that do not have the `sats_received` metadata informed
    #   - The unit count for each product
    #   - The sales sum for each product
    #   - The sats sum for each product
    #   - The corresponding payment owed to UM
    #   - The list of order ids that have been taken into account

    # Update orders:
    #   - Add metadata entry: is_settled_with_um: 1


def filter_orders_by_sku(orders: List[Order], skus: List[str]) -> List[Order]:
    filtered_orders = []

    for order in orders:
        for sku in skus:
            if order.contains_sku(sku):
                filtered_orders.append(order)

    return filtered_orders


def find_orders_without_sats_received(orders: List[Order]) -> List[Order]:
    orders_without_sats_received = []

    for order in orders:
        if not order.contains_meta_data_entry("sats_received"):
            orders_without_sats_received.append(order)
            continue

    return orders_without_sats_received