import { useAccessGroupDetails } from "@/app/(dashboard)/hooks/accessGroups/useAccessGroupDetails";
import {
  Button,
  Card,
  Col,
  Descriptions,
  Empty,
  Flex,
  Layout,
  List,
  Row,
  Spin,
  Tabs,
  Tag,
  theme,
  Typography
} from "antd";
import {
  ArrowLeftIcon,
  BotIcon,
  EditIcon,
  KeyIcon,
  LayersIcon,
  ServerIcon,
  UsersIcon,
} from "lucide-react";
import { useState } from "react";
import DefaultProxyAdminTag from "../common_components/DefaultProxyAdminTag";
import { AccessGroupEditModal } from "./AccessGroupsModal/AccessGroupEditModal";

const { Title, Text } = Typography;
const { Content } = Layout;

interface AccessGroupDetailProps {
  accessGroupId: string;
  onBack: () => void;
}

export function AccessGroupDetail({
  accessGroupId,
  onBack,
}: AccessGroupDetailProps) {
  const { data: accessGroup, isLoading } =
    useAccessGroupDetails(accessGroupId);
  const { token } = theme.useToken();
  const [isEditModalVisible, setIsEditModalVisible] = useState(false);
  const [showAllKeys, setShowAllKeys] = useState(false);
  const [showAllTeams, setShowAllTeams] = useState(false);

  const MAX_PREVIEW = 5;

  if (isLoading) {
    return (
      <Content
        style={{
          padding: token.paddingLG,
          paddingInline: token.paddingLG * 2,
        }}
      >
        <Flex justify="center" align="center" style={{ minHeight: 300 }}>
          <Spin size="large" />
        </Flex>
      </Content>
    );
  }

  if (!accessGroup) {
    return (
      <Content
        style={{
          padding: token.paddingLG,
          paddingInline: token.paddingLG * 2,
        }}
      >
        <Button
          icon={<ArrowLeftIcon size={16} />}
          onClick={onBack}
          type="text"
          style={{ marginBottom: 16 }}
        />
        <Empty description="Access group not found" />
      </Content>
    );
  }

  const modelIds = accessGroup.access_model_names ?? [];
  const mcpServerIds = accessGroup.access_mcp_server_ids ?? [];
  const agentIds = accessGroup.access_agent_ids ?? [];
  const keyIds = accessGroup.assigned_key_ids ?? [];
  const teamIds = accessGroup.assigned_team_ids ?? [];

  const displayedKeys = showAllKeys ? keyIds : keyIds.slice(0, MAX_PREVIEW);
  const displayedTeams = showAllTeams
    ? teamIds
    : teamIds.slice(0, MAX_PREVIEW);

  const handleEdit = () => {
    setIsEditModalVisible(true);
  };

  const tabItems = [
    {
      key: "models",
      label: (
        <Flex align="center" gap={8}>
          <LayersIcon size={16} />
          Models
          <Tag style={{ marginInlineEnd: 0 }}>{modelIds?.length}</Tag>
        </Flex>
      ),
      children:
        modelIds?.length > 0 ? (
          <List
            grid={{ gutter: 16, xs: 1, sm: 2, md: 3, lg: 4 }}
            dataSource={modelIds}
            renderItem={(id) => (
              <List.Item>
                <Card size="small">
                  <Text code>{id}</Text>
                </Card>
              </List.Item>
            )}
          />
        ) : (
          <Empty description="No models assigned to this group" />
        ),
    },
    {
      key: "mcp",
      label: (
        <Flex align="center" gap={8}>
          <ServerIcon size={16} />
          MCP Servers
          <Tag>{mcpServerIds?.length}</Tag>
        </Flex>
      ),
      children:
        mcpServerIds?.length > 0 ? (
          <List
            grid={{ gutter: 16, xs: 1, sm: 2, md: 3, lg: 4 }}
            dataSource={mcpServerIds}
            renderItem={(id) => (
              <List.Item>
                <Card size="small">
                  <Text code>{id}</Text>
                </Card>
              </List.Item>
            )}
          />
        ) : (
          <Empty description="No MCP servers assigned to this group" />
        ),
    },
    {
      key: "agents",
      label: (
        <Flex align="center" gap={8}>
          <BotIcon size={16} />
          Agents
          <Tag>{agentIds?.length}</Tag>
        </Flex>
      ),
      children:
        agentIds?.length > 0 ? (
          <List
            grid={{ gutter: 16, xs: 1, sm: 2, md: 3, lg: 4 }}
            dataSource={agentIds}
            renderItem={(id) => (
              <List.Item>
                <Card size="small">
                  <Text code>{id}</Text>
                </Card>
              </List.Item>
            )}
          />
        ) : (
          <Empty description="No agents assigned to this group" />
        ),
    },
  ];

  return (
    <Content
      style={{ padding: token.paddingLG, paddingInline: token.paddingLG * 2 }}
    >
      {/* Header */}
      <div
        style={{
          display: "flex",
          justifyContent: "space-between",
          alignItems: "center",
          marginBottom: 24,
        }}
      >
        <div style={{ display: "flex", alignItems: "center", gap: 16 }}>
          <Button
            icon={<ArrowLeftIcon size={16} />}
            onClick={onBack}
            type="text"
          />
          <div>
            <Title level={2} style={{ margin: 0 }}>
              {accessGroup.access_group_name}
            </Title>
            <Text type="secondary">
              ID: <Text copyable>{accessGroup.access_group_id}</Text>
            </Text>
          </div>
        </div>
        <Button
          type="primary"
          icon={<EditIcon size={16} />}
          onClick={handleEdit}
        >
          Edit Access Group
        </Button>
      </div>

      {/* Group Details */}
      <Row style={{ marginBottom: 24 }}>
        <Card>
          <Descriptions title="Group Details" column={1}>
            <Descriptions.Item label="Description">
              {accessGroup.description || "—"}
            </Descriptions.Item>
            <Descriptions.Item label="Created">
              {new Date(accessGroup.created_at).toLocaleString()}
              {accessGroup.created_by && (
                <Text>
                  &nbsp;{"by"}&nbsp;
                  <DefaultProxyAdminTag userId={accessGroup.created_by} />
                </Text>
              )}
            </Descriptions.Item>
            <Descriptions.Item label="Last Updated">
              {new Date(accessGroup.updated_at).toLocaleString()}
              {accessGroup.updated_by && (
                <Text>
                  &nbsp;{"by"}&nbsp;
                  <DefaultProxyAdminTag userId={accessGroup.updated_by} />
                </Text>
              )}
            </Descriptions.Item>
          </Descriptions>
        </Card>
      </Row>

      {/* Attached Keys & Teams */}
      <Row gutter={[16, 16]} style={{ marginBottom: 24 }}>
        <Col xs={24} lg={12}>
          <Card
            title={
              <Flex align="center" gap={8}>
                <KeyIcon size={16} />
                Attached Keys
                <Tag>{keyIds?.length}</Tag>
              </Flex>
            }
            extra={
              keyIds?.length > MAX_PREVIEW ? (
                <Button
                  type="link"
                  onClick={() => setShowAllKeys(!showAllKeys)}
                >
                  {showAllKeys ? "Show Less" : `View All (${keyIds?.length})`}
                </Button>
              ) : null
            }
          >
            {keyIds?.length > 0 ? (
              <Flex wrap="wrap" gap={8}>
                {displayedKeys.map((id) => (
                  <Tag key={id}>
                    <Text code style={{ fontSize: 12 }}>
                      {id.length > 20
                        ? `${id.slice(0, 10)}...${id.slice(-6)}`
                        : id}
                    </Text>
                  </Tag>
                ))}
              </Flex>
            ) : (
              <Empty
                description="No keys attached"
                image={Empty.PRESENTED_IMAGE_SIMPLE}
              />
            )}
          </Card>
        </Col>
        <Col xs={24} lg={12}>
          <Card
            title={
              <Flex align="center" gap={8}>
                <UsersIcon size={16} />
                Attached Teams
                <Tag>{teamIds?.length}</Tag>
              </Flex>
            }
            extra={
              teamIds?.length > MAX_PREVIEW ? (
                <Button
                  type="link"
                  onClick={() => setShowAllTeams(!showAllTeams)}
                >
                  {showAllTeams
                    ? "Show Less"
                    : `View All (${teamIds?.length})`}
                </Button>
              ) : null
            }
          >
            {teamIds?.length > 0 ? (
              <Flex wrap="wrap" gap={8}>
                {displayedTeams.map((id) => (
                  <Tag key={id}>
                    <Text code style={{ fontSize: 12 }}>
                      {id}
                    </Text>
                  </Tag>
                ))}
              </Flex>
            ) : (
              <Empty
                description="No teams attached"
                image={Empty.PRESENTED_IMAGE_SIMPLE}
              />
            )}
          </Card>
        </Col>
      </Row>

      {/* Resources Tabs */}
      <Card>
        <Tabs defaultActiveKey="models" items={tabItems} />
      </Card>

      {/* Edit Modal */}
      <AccessGroupEditModal
        visible={isEditModalVisible}
        accessGroup={accessGroup}
        onCancel={() => setIsEditModalVisible(false)}
      />
    </Content>
  );
}