from flask import current_app, redirect, render_template, session, url_for

from app import email_branding_client
from app.main import main
from app.main.forms import AdminEditEmailBrandingForm, SearchByNameForm
from app.s3_client.s3_logo_client import (
    TEMP_TAG,
    delete_email_temp_file,
    delete_email_temp_files_created_by,
    permanent_email_logo_name,
    persist_logo,
    upload_email_logo,
)
from app.utils.user import user_is_platform_admin


@main.route("/email-branding", methods=["GET", "POST"])
@user_is_platform_admin
def email_branding():
    brandings = email_branding_client.get_all_email_branding(sort_key="name")

    return render_template(
        "views/email-branding/select-branding.html",
        email_brandings=brandings,
        search_form=SearchByNameForm(),
    )


@main.route("/email-branding/<uuid:branding_id>/edit", methods=["GET", "POST"])
@main.route("/email-branding/<uuid:branding_id>/edit/<logo>", methods=["GET", "POST"])
@user_is_platform_admin
def update_email_branding(branding_id, logo=None):
    email_branding = email_branding_client.get_email_branding(branding_id)[
        "email_branding"
    ]

    form = AdminEditEmailBrandingForm(
        name=email_branding["name"],
        text=email_branding["text"],
        colour=email_branding["colour"],
        brand_type=email_branding["brand_type"],
    )

    logo = logo if logo else email_branding.get("logo") if email_branding else None

    if form.validate_on_submit():
        if form.file.data:
            upload_filename = upload_email_logo(
                form.file.data.filename, form.file.data, user_id=session["user_id"]
            )

            if logo and logo.startswith(TEMP_TAG.format(user_id=session["user_id"])):
                delete_email_temp_file(logo)

            return redirect(
                url_for(
                    ".update_email_branding",
                    branding_id=branding_id,
                    logo=upload_filename,
                )
            )

        updated_logo_name = (
            permanent_email_logo_name(logo, session["user_id"]) if logo else None
        )

        email_branding_client.update_email_branding(
            branding_id=branding_id,
            logo=updated_logo_name,
            name=form.name.data,
            text=form.text.data,
            colour=form.colour.data,
            brand_type=form.brand_type.data,
        )

        if logo:
            persist_logo(logo, updated_logo_name)

        delete_email_temp_files_created_by(session["user_id"])

        return redirect(url_for(".email_branding", branding_id=branding_id))

    return render_template(
        "views/email-branding/manage-branding.html",
        form=form,
        email_branding=email_branding,
        cdn_url=current_app.config["LOGO_CDN_DOMAIN"],
        logo=logo,
    )


@main.route("/email-branding/create", methods=["GET", "POST"])
@main.route("/email-branding/create/<logo>", methods=["GET", "POST"])
@user_is_platform_admin
def create_email_branding(logo=None):
    form = AdminEditEmailBrandingForm(brand_type="org")

    if form.validate_on_submit():
        if form.file.data:
            upload_filename = upload_email_logo(
                form.file.data.filename, form.file.data, user_id=session["user_id"]
            )

            if logo and logo.startswith(TEMP_TAG.format(user_id=session["user_id"])):
                delete_email_temp_file(logo)

            return redirect(url_for(".create_email_branding", logo=upload_filename))

        updated_logo_name = (
            permanent_email_logo_name(logo, session["user_id"]) if logo else None
        )

        email_branding_client.create_email_branding(
            logo=updated_logo_name,
            name=form.name.data,
            text=form.text.data,
            colour=form.colour.data,
            brand_type=form.brand_type.data,
        )

        if logo:
            persist_logo(logo, updated_logo_name)

        delete_email_temp_files_created_by(session["user_id"])

        return redirect(url_for(".email_branding"))

    return render_template(
        "views/email-branding/manage-branding.html",
        form=form,
        cdn_url=current_app.config["LOGO_CDN_DOMAIN"],
        logo=logo,
    )