import { KeyRound, ShieldCheck, Trash2 } from 'lucide-react';
import { useCallback, useEffect, useMemo, useState } from 'react';

import type {
  ExternalApiKeyCreateResponse,
  ExternalApiKeyProfile,
} from '../../../packages/shared/src/contracts/runtime';
import {
  createPlatformProfileExternalApiKey,
  listPlatformProfileExternalApiKeys,
  revokePlatformProfileExternalApiKey,
} from '../../services/platform-entry/platformProfileClient';
import { CopyFeedbackButton } from '../common/CopyFeedbackButton';
import { PlatformActionButton } from '../common/PlatformActionButton';
import { PlatformAsyncStatePanel } from '../common/PlatformAsyncStatePanel';
import { PlatformEmptyState } from '../common/PlatformEmptyState';
import { PlatformProfileContentRow } from '../common/PlatformProfileContentRow';
import { PlatformProfileSkeletonList } from '../common/PlatformProfileSkeletonList';
import { PlatformProfileSummaryHeader } from '../common/PlatformProfileSummaryHeader';
import { PlatformStatusMessage } from '../common/PlatformStatusMessage';
import { PlatformTextField } from '../common/PlatformTextField';
import { useCopyFeedback } from '../common/useCopyFeedback';
import { formatPlatformProfileTime } from './platformProfileFundsModel';
import { PlatformProfileSecondaryModalShell } from './PlatformProfileModalShell';

type PlatformProfileApiKeysModalProps = {
  onClose: () => void;
};

function isActiveExternalApiKey(key: ExternalApiKeyProfile) {
  return !key.revokedAt;
}

function buildApiKeyTimeLabel(value: string | null) {
  if (!value) {
    return '尚未使用';
  }
  return formatPlatformProfileTime(value);
}

function buildApiKeyScopeLabel(scopes: string[]) {
  return scopes.length > 0 ? scopes.join(' / ') : '默认权限';
}

/**
 * 开发者 API Key 管理弹窗。
 * 明文 Key 只保留在本次创建后的组件状态里，关闭弹窗后即丢弃。
 */
export function PlatformProfileApiKeysModal({
  onClose,
}: PlatformProfileApiKeysModalProps) {
  const [keys, setKeys] = useState<ExternalApiKeyProfile[]>([]);
  const [isLoading, setIsLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);
  const [nameInput, setNameInput] = useState('外部 API Key');
  const [createdKey, setCreatedKey] =
    useState<ExternalApiKeyCreateResponse | null>(null);
  const [isCreating, setIsCreating] = useState(false);
  const [revokingKeyId, setRevokingKeyId] = useState<string | null>(null);
  const { copyState, copyText } = useCopyFeedback();

  const activeKeys = useMemo(() => keys.filter(isActiveExternalApiKey), [keys]);
  const shouldShowBlockingError = Boolean(
    error && !isLoading && keys.length === 0,
  );

  const loadKeys = useCallback(() => {
    setIsLoading(true);
    setError(null);
    void listPlatformProfileExternalApiKeys()
      .then((response) => {
        setKeys(response.keys);
      })
      .catch((loadError: unknown) => {
        setError(
          loadError instanceof Error ? loadError.message : '读取 API Key 失败',
        );
      })
      .finally(() => setIsLoading(false));
  }, []);

  useEffect(() => {
    loadKeys();
  }, [loadKeys]);

  const createKey = useCallback(() => {
    if (isCreating) {
      return;
    }
    setIsCreating(true);
    setError(null);
    setCreatedKey(null);
    void createPlatformProfileExternalApiKey(nameInput)
      .then((response) => {
        setCreatedKey(response);
        setKeys((current) => [
          response.key,
          ...current.filter((key) => key.keyId !== response.key.keyId),
        ]);
        setNameInput('外部 API Key');
      })
      .catch((createError: unknown) => {
        setError(
          createError instanceof Error
            ? createError.message
            : '创建 API Key 失败',
        );
      })
      .finally(() => setIsCreating(false));
  }, [isCreating, nameInput]);

  const revokeKey = useCallback((keyId: string) => {
    setRevokingKeyId(keyId);
    setError(null);
    void revokePlatformProfileExternalApiKey(keyId)
      .then((response) => {
        setKeys((current) =>
          current.map((key) =>
            key.keyId === response.key.keyId ? response.key : key,
          ),
        );
        setCreatedKey((current) =>
          current?.key.keyId === response.key.keyId ? null : current,
        );
      })
      .catch((revokeError: unknown) => {
        setError(
          revokeError instanceof Error
            ? revokeError.message
            : '撤销 API Key 失败',
        );
      })
      .finally(() => setRevokingKeyId(null));
  }, []);

  return (
    <PlatformProfileSecondaryModalShell
      title="开发者 API Key"
      onClose={onClose}
      closeLabel="关闭开发者 API Key"
      closeButtonClassName="bg-white/80"
      panelClassName="relative !max-h-[min(92vh,44rem)] !max-w-[34rem] bg-[linear-gradient(180deg,#f8fbff_0%,#ffffff_42%,#f8fafc_100%)] text-zinc-950 shadow-2xl !rounded-[1.35rem] sm:!rounded-[1.35rem]"
      contentClassName="relative max-h-[min(92vh,44rem)] overflow-y-auto px-4 pb-5 pt-4 sm:px-5"
    >
      <PlatformProfileSummaryHeader
        kicker="OPENAPI"
        title="开发者 API Key"
        badge={
          <span className="inline-flex items-center gap-1.5 rounded-full bg-white/76 px-3 py-1 text-xs font-black text-sky-700 shadow-sm ring-1 ring-sky-100">
            <ShieldCheck className="h-3.5 w-3.5" />
            {activeKeys.length} 个可用
          </span>
        }
      />

      <div className="mt-5 rounded-[1.1rem] border border-sky-100 bg-white/82 p-3 shadow-sm">
        <div className="flex items-end gap-2">
          <label className="min-w-0 flex-1">
            <span className="mb-1.5 block text-xs font-black text-zinc-500">
              名称
            </span>
            <PlatformTextField
              value={nameInput}
              density="compact"
              tone="sky"
              onChange={(event) => setNameInput(event.target.value)}
            />
          </label>
          <PlatformActionButton
            surface="profile"
            size="sm"
            className="shrink-0"
            disabled={isCreating}
            onClick={createKey}
          >
            <KeyRound className="h-4 w-4" />
            {isCreating ? '创建中' : '创建'}
          </PlatformActionButton>
        </div>
      </div>

      {createdKey ? (
        <PlatformStatusMessage
          tone="success"
          surface="profile"
          size="sm"
          className="mt-4 rounded-2xl font-semibold"
        >
          <div className="text-xs font-black text-emerald-700">新 Key</div>
          <div className="mt-2 break-all rounded-xl bg-white/80 px-3 py-2 font-mono text-[12px] text-zinc-800">
            {createdKey.apiKey}
          </div>
          <CopyFeedbackButton
            state={copyState}
            idleLabel="复制 Key"
            actionSurface="profile"
            actionTone="primary"
            actionSize="xs"
            className="mt-3"
            onClick={() => void copyText(createdKey.apiKey)}
          />
        </PlatformStatusMessage>
      ) : null}

      <PlatformAsyncStatePanel
        errorState={
          shouldShowBlockingError ? (
            <PlatformStatusMessage
              tone="error"
              surface="profile"
              size="xs"
              className="mt-4 rounded-2xl font-semibold"
            >
              <div>{error}</div>
              <PlatformActionButton
                surface="profile"
                size="xs"
                className="mt-3"
                onClick={loadKeys}
              >
                重新加载
              </PlatformActionButton>
            </PlatformStatusMessage>
          ) : null
        }
        isLoading={isLoading}
        loadingState={
          <PlatformProfileSkeletonList
            count={3}
            containerClassName="mt-5 space-y-3"
            itemClassName="h-20 rounded-2xl bg-white/70"
          />
        }
        isEmpty={keys.length === 0}
        emptyState={
          <PlatformEmptyState
            surface="subpanel"
            size="inline"
            className="mt-5 py-8"
          >
            暂无 API Key
          </PlatformEmptyState>
        }
      >
        {error ? (
          <PlatformStatusMessage
            tone="error"
            surface="profile"
            size="xs"
            className="mb-3 rounded-2xl font-semibold"
          >
            {error}
          </PlatformStatusMessage>
        ) : null}
        <div className="mt-5 space-y-2.5">
          {keys.map((key) => {
            const isActive = isActiveExternalApiKey(key);
            const isRevoking = revokingKeyId === key.keyId;
            return (
              <PlatformProfileContentRow
                key={key.keyId}
                surface="flat"
                radius="xs"
                padding="none"
                className="flex items-start justify-between gap-3 px-3 py-3 shadow-sm"
              >
                <div className="min-w-0">
                  <div className="flex min-w-0 items-center gap-2">
                    <span className="truncate text-sm font-black text-zinc-900">
                      {key.name}
                    </span>
                    <span
                      className={`shrink-0 rounded-full px-2 py-0.5 text-[10px] font-black ${
                        isActive
                          ? 'bg-emerald-50 text-emerald-700'
                          : 'bg-zinc-100 text-zinc-500'
                      }`}
                    >
                      {isActive ? '可用' : '已撤销'}
                    </span>
                  </div>
                  <div className="mt-1 font-mono text-xs font-semibold text-zinc-500">
                    {key.keyPrefix}...
                  </div>
                  <div className="mt-2 text-[11px] font-semibold text-zinc-400">
                    {buildApiKeyScopeLabel(key.scopes)}
                  </div>
                  <div className="mt-1 text-[11px] font-semibold text-zinc-400">
                    创建 {buildApiKeyTimeLabel(key.createdAt)} · 最近使用{' '}
                    {buildApiKeyTimeLabel(key.lastUsedAt)}
                  </div>
                </div>
                {isActive ? (
                  <PlatformActionButton
                    surface="profile"
                    tone="danger"
                    size="xs"
                    className="shrink-0"
                    disabled={isRevoking}
                    onClick={() => revokeKey(key.keyId)}
                  >
                    <Trash2 className="h-3.5 w-3.5" />
                    {isRevoking ? '撤销中' : '撤销'}
                  </PlatformActionButton>
                ) : null}
              </PlatformProfileContentRow>
            );
          })}
        </div>
      </PlatformAsyncStatePanel>
    </PlatformProfileSecondaryModalShell>
  );
}