from __future__ import annotations

from fastapi import APIRouter, Request, Response
from fastapi.responses import HTMLResponse, RedirectResponse
from starlette.concurrency import run_in_threadpool

from ..dependencies import ServiceDep, SettingsDep, StoreDep
from ..event_statuses import DASHBOARD_PASSWORD_CHANGED, DASHBOARD_PASSWORD_ENABLED, DASHBOARD_PASSWORD_REMOVED
from ..security import client_ip, dashboard_csrf_token, require_dashboard_csrf
from ..web.forms import first_form_value, request_form
from ..web.templates_management import _render_management_unlock_page
from .management_shared import (
    delete_unlock_cookie,
    get_active_management_account_async,
    has_management_access,
    management_error_response_async,
    render_management_page_async,
    set_unlock_cookie,
    unlock_cookie_seconds,
)
from .path_params import ManagementSlugPath

router = APIRouter()


@router.post("/m/{management_slug}/unlock", include_in_schema=False)
async def unlock_dashboard(
    management_slug: ManagementSlugPath, request: Request, settings: SettingsDep, store: StoreDep
) -> Response:
    account = await get_active_management_account_async(store, management_slug)
    if not account.get("dashboard_password_hash"):
        return RedirectResponse(f"/m/{management_slug}", status_code=303)
    form = await request_form(request, settings)
    require_dashboard_csrf(management_slug, account, first_form_value(form, "csrf"))
    password = first_form_value(form, "dashboard_password")
    hostname = str(account["hostname"])
    is_valid = await run_in_threadpool(store.verify_dashboard_password, hostname, password)
    if not is_valid:
        return HTMLResponse(
            _render_management_unlock_page(
                management_slug, account, dashboard_csrf_token(management_slug, account), "Incorrect password."
            ),
            status_code=401,
        )
    response = RedirectResponse(f"/m/{management_slug}", status_code=303)
    set_unlock_cookie(
        response,
        settings,
        management_slug,
        account,
        unlock_cookie_seconds(settings, first_form_value(form, "stay_unlocked")),
    )
    return response


@router.post("/m/{management_slug}/password", include_in_schema=False)
async def set_dashboard_password(
    management_slug: ManagementSlugPath,
    request: Request,
    settings: SettingsDep,
    store: StoreDep,
    service: ServiceDep,
) -> Response:
    account = await get_active_management_account_async(store, management_slug)
    if not has_management_access(request, settings, management_slug, account):
        return HTMLResponse(
            _render_management_unlock_page(management_slug, account, dashboard_csrf_token(management_slug, account)),
            status_code=401,
        )
    form = await request_form(request, settings)
    require_dashboard_csrf(management_slug, account, first_form_value(form, "csrf"))
    hostname = str(account["hostname"])
    if account.get("dashboard_password_hash"):
        is_current = await run_in_threadpool(
            store.verify_dashboard_password,
            hostname,
            first_form_value(form, "current_dashboard_password"),
        )
        if not is_current:
            return await management_error_response_async(
                service,
                settings,
                management_slug,
                account,
                "Current password is incorrect.",
                client_ip(request, settings),
            )
    password = first_form_value(form, "dashboard_password")
    confirm = first_form_value(form, "dashboard_password_confirm")
    if len(password) < 8:
        page = await render_management_page_async(
            service,
            settings,
            management_slug,
            account,
            dashboard_csrf_token(management_slug, account),
            message="Password must be at least 8 characters.",
            request_ip=client_ip(request, settings),
        )
        return HTMLResponse(page, status_code=400)
    if password != confirm:
        page = await render_management_page_async(
            service,
            settings,
            management_slug,
            account,
            dashboard_csrf_token(management_slug, account),
            message="The passwords do not match.",
            request_ip=client_ip(request, settings),
        )
        return HTMLResponse(page, status_code=400)
    had_password = bool(account.get("dashboard_password_hash"))
    await run_in_threadpool(store.set_dashboard_password, hostname, password)
    account = await get_active_management_account_async(store, management_slug)
    await run_in_threadpool(
        store.log_update_event,
        hostname,
        None,
        None,
        DASHBOARD_PASSWORD_CHANGED if had_password else DASHBOARD_PASSWORD_ENABLED,
        "dashboard password changed" if had_password else "dashboard password enabled",
        client_ip(request, settings),
    )
    response = RedirectResponse(f"/m/{management_slug}", status_code=303)
    set_unlock_cookie(response, settings, management_slug, account, settings.dashboard_unlock_seconds)
    return response


@router.post("/m/{management_slug}/password/remove", include_in_schema=False)
async def remove_dashboard_password(
    management_slug: ManagementSlugPath,
    request: Request,
    settings: SettingsDep,
    store: StoreDep,
    service: ServiceDep,
) -> Response:
    account = await get_active_management_account_async(store, management_slug)
    if not has_management_access(request, settings, management_slug, account):
        return HTMLResponse(
            _render_management_unlock_page(management_slug, account, dashboard_csrf_token(management_slug, account)),
            status_code=401,
        )
    form = await request_form(request, settings)
    require_dashboard_csrf(management_slug, account, first_form_value(form, "csrf"))
    hostname = str(account["hostname"])
    if account.get("dashboard_password_hash"):
        is_current = await run_in_threadpool(
            store.verify_dashboard_password,
            hostname,
            first_form_value(form, "current_dashboard_password"),
        )
        if not is_current:
            return await management_error_response_async(
                service,
                settings,
                management_slug,
                account,
                "Current password is incorrect.",
                client_ip(request, settings),
            )
    await run_in_threadpool(store.clear_dashboard_password, hostname)
    await run_in_threadpool(
        store.log_update_event,
        hostname,
        None,
        None,
        DASHBOARD_PASSWORD_REMOVED,
        "dashboard password removed",
        client_ip(request, settings),
    )
    response = RedirectResponse(f"/m/{management_slug}", status_code=303)
    delete_unlock_cookie(response, management_slug)
    return response