from __future__ import annotations

import sqlite3

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

from ..ddns_security import client_ip, dashboard_csrf_token, require_dashboard_csrf
from ..ddns_service import normalize_domain
from ..dependencies import ServiceDep, SettingsDep, StoreDep
from ..event_statuses import (
    DASHBOARD_CUSTOM_HOSTNAME_CREATED,
    DASHBOARD_DOMAIN_CLAIM_CREATED,
    DASHBOARD_DOMAIN_CLAIM_PENDING,
    DASHBOARD_DOMAIN_CLAIM_VERIFIED,
)
from ..web.forms import first_form_value, request_form
from ..web.templates_public import _render_public_home
from .management_shared import (
    get_active_management_account_async,
    has_management_access,
    locked_management_response,
    render_management_page_async,
)
from .path_params import ClaimSecretPath, ManagementSlugPath

router = APIRouter()


@router.get("/d/{claim_secret}", response_class=HTMLResponse, include_in_schema=False)
async def manage_domain_claim(claim_secret: ClaimSecretPath, settings: SettingsDep, store: StoreDep, service: ServiceDep) -> str:
    challenge = await run_in_threadpool(store.get_domain_challenge_by_secret, claim_secret)
    if not challenge:
        raise HTTPException(status_code=404, detail="not found")
    return await run_in_threadpool(_render_public_home, service, settings, None, None, challenge)


@router.post("/m/{management_slug}/domains/request", response_class=HTMLResponse, include_in_schema=False)
async def request_dashboard_domain(
    management_slug: ManagementSlugPath,
    request: Request,
    settings: SettingsDep,
    store: StoreDep,
    service: ServiceDep,
) -> str:
    account = await get_active_management_account_async(store, management_slug)
    if not has_management_access(request, settings, management_slug, account):
        return locked_management_response(management_slug, account)
    form = await request_form(request, settings)
    require_dashboard_csrf(management_slug, account, first_form_value(form, "csrf"))
    try:
        challenge = await run_in_threadpool(
            service.create_domain_challenge,
            first_form_value(form, "domain"),
            str(account["hostname"]),
        )
    except sqlite3.IntegrityError as exc:
        raise HTTPException(status_code=409, detail="domain is already verified") from exc
    await run_in_threadpool(
        store.log_update_event,
        str(account["hostname"]),
        None,
        None,
        DASHBOARD_DOMAIN_CLAIM_CREATED,
        "domain claim created",
        client_ip(request, settings),
    )
    return await render_management_page_async(
        service,
        settings,
        management_slug,
        account,
        dashboard_csrf_token(management_slug, account),
        message="Claim created. Add the TXT record, then verify it.",
        challenge=challenge,
    )


@router.post("/m/{management_slug}/domains/verify", response_class=HTMLResponse, include_in_schema=False)
async def verify_dashboard_domain(
    management_slug: ManagementSlugPath,
    request: Request,
    settings: SettingsDep,
    store: StoreDep,
    service: ServiceDep,
) -> str:
    account = await get_active_management_account_async(store, management_slug)
    if not has_management_access(request, settings, management_slug, account):
        return locked_management_response(management_slug, account)
    form = await request_form(request, settings)
    require_dashboard_csrf(management_slug, account, first_form_value(form, "csrf"))
    domain = normalize_domain(first_form_value(form, "domain"))
    claim_secret = first_form_value(form, "claim_secret")
    found, challenge = await run_in_threadpool(service.verify_domain, domain, claim_secret, str(account["hostname"]))
    message = "Domain verified. You can create a hostname now." if found else "TXT record not found yet. Try again in a few minutes."
    await run_in_threadpool(
        store.log_update_event,
        str(account["hostname"]),
        None,
        None,
        DASHBOARD_DOMAIN_CLAIM_VERIFIED if found else DASHBOARD_DOMAIN_CLAIM_PENDING,
        "domain claim verified" if found else "domain claim TXT not found",
        client_ip(request, settings),
    )
    return await render_management_page_async(
        service,
        settings,
        management_slug,
        account,
        dashboard_csrf_token(management_slug, account),
        message=message,
        challenge=challenge,
    )


@router.post("/m/{management_slug}/domains/hostnames", response_class=HTMLResponse, include_in_schema=False)
async def create_dashboard_custom_hostname(
    management_slug: ManagementSlugPath,
    request: Request,
    settings: SettingsDep,
    store: StoreDep,
    service: ServiceDep,
) -> str:
    account = await get_active_management_account_async(store, management_slug)
    if not has_management_access(request, settings, management_slug, account):
        return locked_management_response(management_slug, account)
    form = await request_form(request, settings)
    require_dashboard_csrf(management_slug, account, first_form_value(form, "csrf"))
    created = await run_in_threadpool(
        service.create_custom_account,
        first_form_value(form, "hostname"),
        first_form_value(form, "claim_secret"),
        None,
        str(account["hostname"]),
    )
    await run_in_threadpool(
        store.log_update_event,
        str(account["hostname"]),
        None,
        None,
        DASHBOARD_CUSTOM_HOSTNAME_CREATED,
        "custom hostname created",
        client_ip(request, settings),
    )
    return await render_management_page_async(
        service,
        settings,
        management_slug,
        account,
        dashboard_csrf_token(management_slug, account),
        message="Hostname created. Copy these router settings now.",
        created_account=created,
    )