from datetime import datetime

from flask import render_template, url_for
from werkzeug.utils import redirect

from app import provider_client
from app.main import main
from app.main.forms import AdminProviderRatioForm
from app.utils.user import user_is_platform_admin

PROVIDER_PRIORITY_MEANING_SWITCHOVER = datetime(2019, 11, 29, 11, 0).isoformat()


@main.route("/providers")
@user_is_platform_admin
def view_providers():
    providers = provider_client.get_all_providers()["provider_details"]
    domestic_email_providers, domestic_sms_providers, intl_sms_providers = [], [], []
    for provider in providers:
        if provider["notification_type"] == "sms":
            domestic_sms_providers.append(provider)
            if provider.get("supports_international", None):
                intl_sms_providers.append(provider)
        elif provider["notification_type"] == "email":
            domestic_email_providers.append(provider)

    add_monthly_traffic(domestic_sms_providers)

    return render_template(
        "views/providers/providers.html",
        email_providers=domestic_email_providers,
        domestic_sms_providers=domestic_sms_providers,
        intl_sms_providers=intl_sms_providers,
    )


def add_monthly_traffic(domestic_sms_providers):
    total_sms_sent = sum(
        provider["current_month_billable_sms"] for provider in domestic_sms_providers
    )

    for provider in domestic_sms_providers:
        percentage = (
            (provider["current_month_billable_sms"] / total_sms_sent * 100)
            if total_sms_sent
            else 0
        )
        provider["monthly_traffic"] = round(percentage)


@main.route("/provider/edit-sms-provider-ratio", methods=["GET", "POST"])
@user_is_platform_admin
def edit_sms_provider_ratio():
    providers = [
        provider
        for provider in provider_client.get_all_providers()["provider_details"]
        if provider["notification_type"] == "sms" and provider["active"]
    ]

    form = AdminProviderRatioForm(providers)

    if form.validate_on_submit():
        for provider in providers:
            field = getattr(form, provider["identifier"])
            provider_client.update_provider(provider["id"], field.data)
        return redirect(url_for(".view_providers"))

    return render_template(
        "views/providers/edit-sms-provider-ratio.html", form=form, providers=providers
    )


@main.route("/provider/<uuid:provider_id>")
@user_is_platform_admin
def view_provider(provider_id):
    versions = provider_client.get_provider_versions(provider_id)
    return render_template(
        "views/providers/provider.html", provider_versions=versions["data"]
    )