'use client';

import { zodResolver } from '@hookform/resolvers/zod';
import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
import { useEffect, useState } from 'react';
import { useForm } from 'react-hook-form';

import { InlineMessage } from '@/components/feedback/inline-message';
import { AppModal } from '@/components/ui/app-modal';
import {
  applyTlsCertificate,
  convertTlsCertificateToAcme,
  updateAcmeCertificate,
} from '@/features/tls-certificates/api/tls-certificates';
import type { TlsCertificateItem } from '@/features/tls-certificates/types';
import { getDnsAccounts } from '@/features/dns-accounts/api/dns-accounts';
import { getDefaultAcmeAccount } from '@/features/acme-accounts/api/acme-accounts';
import {
  acmeApplySchema,
  defaultAcmeApplyValues,
  type AcmeApplyFormValues,
} from '@/features/websites/schemas';
import { getErrorMessage } from '@/features/websites/utils';
import {
  PrimaryButton,
  ResourceField,
  ResourceInput,
  ResourceSelect,
  ToggleField,
} from '@/features/shared/components/resource-primitives';

interface CertificateApplyModalProps {
  isOpen: boolean;
  onClose: () => void;
  onApplied?: (certificate: TlsCertificateItem) => void;
  mode?: 'create' | 'edit-acme' | 'convert-upload';
  certificate?: TlsCertificateItem | null;
}

export function CertificateApplyModal({
  isOpen,
  onClose,
  onApplied,
  mode = 'create',
  certificate,
}: CertificateApplyModalProps) {
  const queryClient = useQueryClient();
  const [feedback, setFeedback] = useState<{
    tone: 'success' | 'danger';
    message: string;
  } | null>(null);
  const [showAdvanced, setShowAdvanced] = useState(false);

  const dnsAccountsQuery = useQuery({
    queryKey: ['dns-accounts'],
    queryFn: getDnsAccounts,
    enabled: isOpen,
  });

  const defaultAcmeAccountQuery = useQuery({
    queryKey: ['acme-accounts', 'default'],
    queryFn: getDefaultAcmeAccount,
    enabled: isOpen,
  });

  const form = useForm<AcmeApplyFormValues>({
    resolver: zodResolver(acmeApplySchema),
    defaultValues: defaultAcmeApplyValues,
  });

  useEffect(() => {
    if (!isOpen) return;
    setFeedback(null);
    setShowAdvanced(false);

    if (certificate) {
      form.reset({
        name: certificate.name,
        primary_domain:
          mode === 'convert-upload' ? '' : certificate.primary_domain || '',
        other_domains:
          mode === 'convert-upload' ? '' : certificate.other_domains || '',
        remark: certificate.remark || '',
        acme_account_id:
          mode === 'convert-upload' ? 0 : certificate.acme_account_id,
        dns_account_id:
          mode === 'convert-upload' ? 0 : certificate.dns_account_id,
        key_algorithm: certificate.key_algorithm || 'EC256',
        auto_renew: mode === 'convert-upload' ? true : certificate.auto_renew,
        dns1: mode === 'convert-upload' ? '' : certificate.dns1 || '',
        dns2: mode === 'convert-upload' ? '' : certificate.dns2 || '',
        disable_cname:
          mode === 'convert-upload' ? false : certificate.disable_cname,
        skip_dns: mode === 'convert-upload' ? false : certificate.skip_dns,
      });
      if (
        mode !== 'convert-upload' &&
        (certificate.dns1 ||
          certificate.dns2 ||
          certificate.disable_cname ||
          certificate.skip_dns)
      ) {
        setShowAdvanced(true);
      }
    } else {
      form.reset(defaultAcmeApplyValues);
    }
  }, [isOpen, form, mode, certificate]);

  useEffect(() => {
    if (
      defaultAcmeAccountQuery.data &&
      form.getValues('acme_account_id') === 0
    ) {
      form.setValue('acme_account_id', defaultAcmeAccountQuery.data.id);
    }
  }, [defaultAcmeAccountQuery.data, form, isOpen]);

  const applyMutation = useMutation({
    mutationFn: (values: AcmeApplyFormValues) => {
      if (mode === 'edit-acme' && certificate) {
        return updateAcmeCertificate(certificate.id, values);
      }
      if (mode === 'convert-upload' && certificate) {
        return convertTlsCertificateToAcme(certificate.id, values);
      }
      return applyTlsCertificate(values);
    },
    onSuccess: async (certificate) => {
      await queryClient.invalidateQueries({ queryKey: ['tls-certificates'] });
      onApplied?.(certificate);
      onClose();
    },
    onError: (error) => {
      setFeedback({ tone: 'danger', message: getErrorMessage(error) });
    },
  });

  const onSubmit = form.handleSubmit((values) => {
    setFeedback(null);
    applyMutation.mutate(values);
  });

  return (
    <AppModal
      isOpen={isOpen}
      onClose={onClose}
      title={
        mode === 'edit-acme'
          ? '编辑并重新申请证书'
          : mode === 'convert-upload'
            ? '转换为申请证书'
            : '申请证书'
      }
      description={
        mode === 'edit-acme'
          ? '修改 ACME 证书配置。保存后将使用新配置重新申请证书。'
          : mode === 'convert-upload'
            ? '填写 ACME 申请资料。申请成功后，当前手动证书会原地转换为可自动续签的申请证书。'
            : "使用 ACME (Let's Encrypt 等) 自动申请和续期证书，支持通配符域名。"
      }
      size="xl"
    >
      <form className="space-y-5" onSubmit={onSubmit}>
        {feedback ? (
          <InlineMessage tone={feedback.tone} message={feedback.message} />
        ) : null}

        <div className="grid gap-4 md:grid-cols-2">
          <ResourceField
            label="证书名称"
            error={form.formState.errors.name?.message}
          >
            <ResourceInput
              placeholder="例如：主站证书"
              {...form.register('name')}
            />
          </ResourceField>
          <ResourceField
            label="主域名"
            error={form.formState.errors.primary_domain?.message}
          >
            <ResourceInput
              placeholder="example.com 或 *.example.com"
              {...form.register('primary_domain')}
            />
          </ResourceField>
        </div>

        <ResourceField
          label="其他域名"
          hint="每行一个域名。如申请通配符证书，请填写对应的根域名以便一并签发。"
          error={form.formState.errors.other_domains?.message}
        >
          <textarea
            className="w-full rounded-xl border border-[var(--border-default)] bg-[var(--control-background)] px-4 py-3 text-sm text-[var(--foreground-primary)] transition outline-none focus:border-[var(--brand-primary)]"
            rows={3}
            placeholder="example.net"
            {...form.register('other_domains')}
          />
        </ResourceField>

        <div className="grid gap-4 md:grid-cols-2">
          <ResourceField
            label="DNS 服务商账号"
            error={form.formState.errors.dns_account_id?.message}
          >
            <ResourceSelect {...form.register('dns_account_id')}>
              <option value={0}>请选择 DNS 账号</option>
              {dnsAccountsQuery.data?.map((acc) => (
                <option key={acc.id} value={acc.id}>
                  {acc.name} ({acc.type})
                </option>
              ))}
            </ResourceSelect>
          </ResourceField>

          <ResourceField
            label="密钥算法"
            error={form.formState.errors.key_algorithm?.message}
          >
            <ResourceSelect {...form.register('key_algorithm')}>
              <option value="RSA2048">RSA 2048</option>
              <option value="RSA4096">RSA 4096</option>
              <option value="EC256">ECC 256</option>
              <option value="EC384">ECC 384</option>
            </ResourceSelect>
          </ResourceField>
        </div>

        <div className="grid gap-4 md:grid-cols-1">
          <ResourceField
            label="备注"
            error={form.formState.errors.remark?.message}
          >
            <ResourceInput
              placeholder="可选，用于记录证书用途。"
              {...form.register('remark')}
            />
          </ResourceField>

          <ToggleField
            label="开启自动续签"
            description="开启后，将在证书过期前 7 天自动续期。"
            checked={form.watch('auto_renew')}
            onChange={(checked) => form.setValue('auto_renew', checked)}
          />
        </div>

        <div className="overflow-hidden rounded-2xl border border-[var(--border-default)] bg-[var(--surface-elevated)]">
          <button
            type="button"
            className="flex w-full items-center justify-between px-4 py-3 text-sm font-medium text-[var(--foreground-primary)] transition hover:bg-[var(--surface-muted)]"
            onClick={() => setShowAdvanced(!showAdvanced)}
          >
            <span>高级选项</span>
            <svg
              className={`h-4 w-4 transition-transform duration-200 ${showAdvanced ? 'rotate-180' : ''}`}
              fill="none"
              stroke="currentColor"
              viewBox="0 0 24 24"
            >
              <path
                strokeLinecap="round"
                strokeLinejoin="round"
                strokeWidth={2}
                d="M19 9l-7 7-7-7"
              />
            </svg>
          </button>
          {showAdvanced && (
            <div className="space-y-4 border-t border-[var(--border-default)] px-4 py-4">
              <div className="grid gap-4 md:grid-cols-2">
                <ResourceField
                  label="DNS 验证服务器 1"
                  hint="可选，如 8.8.8.8"
                  error={form.formState.errors.dns1?.message}
                >
                  <ResourceInput
                    placeholder="为空则使用默认权威 DNS"
                    {...form.register('dns1')}
                  />
                </ResourceField>
                <ResourceField
                  label="DNS 验证服务器 2"
                  hint="可选，如 1.1.1.1"
                  error={form.formState.errors.dns2?.message}
                >
                  <ResourceInput
                    placeholder="为空则使用默认权威 DNS"
                    {...form.register('dns2')}
                  />
                </ResourceField>
              </div>
              <div className="grid gap-4 md:grid-cols-2">
                <ToggleField
                  label="跳过 CNAME 检查"
                  description="在执行 DNS-01 验证时不追踪 CNAME 记录。"
                  checked={form.watch('disable_cname')}
                  onChange={(checked) =>
                    form.setValue('disable_cname', checked)
                  }
                />
                <ToggleField
                  label="跳过 DNS 前置检查"
                  description="直接请求 Let's Encrypt 验证而不做本地校验。"
                  checked={form.watch('skip_dns')}
                  onChange={(checked) => form.setValue('skip_dns', checked)}
                />
              </div>
            </div>
          )}
        </div>

        <PrimaryButton type="submit" disabled={applyMutation.isPending}>
          {applyMutation.isPending
            ? '提交中...'
            : mode === 'edit-acme'
              ? '保存并申请'
              : mode === 'convert-upload'
                ? '开始转换'
                : '开始申请'}
        </PrimaryButton>
      </form>
    </AppModal>
  );
}