'use client'

import { useState } from 'react'
import {
	Card,
	Input,
	Button,
	Form,
	InputNumber,
	message,
	Descriptions,
	Typography,
	Space,
} from 'antd'
import { CopyOutlined, LoadingOutlined } from '@ant-design/icons'

const { Title, Text } = Typography

export default function LpCopyPage() {
	const [loading, setLoading] = useState(false)
	const [positionInfo, setPositionInfo] = useState<{
		poolAddress: string
		tickLower: number
		tickUpper: number
		base: string
		baseAmount: string
		otherAmountMax: string
		estimatedValue: number
		priceLower: string
		priceUpper: string
	} | null>(null)
	const [form] = Form.useForm()

	const handleCopy = async (values: {
		positionAddress: string
		maxUsdValue: number
	}) => {
		setLoading(true)
		setPositionInfo(null)

		try {
			const response = await fetch('/api/lp-copy', {
				method: 'POST',
				headers: {
					'Content-Type': 'application/json',
				},
				body: JSON.stringify({
					positionAddress: values.positionAddress,
					maxUsdValue: values.maxUsdValue,
				}),
			})

			const data = await response.json()

			if (!response.ok) {
				throw new Error(data.error || 'Failed to copy position')
			}

			setPositionInfo(data.positionInfo)
			message.success('Position copied successfully!')
			message.info(`Transaction ID: ${data.txid}`)
		} catch (error: unknown) {
			const errorMessage =
				error instanceof Error ? error.message : 'Failed to copy position'
			message.error(errorMessage)
		} finally {
			setLoading(false)
		}
	}

	return (
		<div style={{ padding: '24px', maxWidth: '800px', margin: '0 auto' }}>
			<Title level={2}>LP Position Copy</Title>
			<Text type="secondary">
				Copy an existing LP position with a limited investment amount. The
				system will automatically calculate the optimal token amounts.
			</Text>

			<Card style={{ marginTop: '24px' }}>
				<Form
					form={form}
					layout="vertical"
					onFinish={handleCopy}
					initialValues={{
						maxUsdValue: 10,
					}}
				>
					<Form.Item
						label="Position Address"
						name="positionAddress"
						rules={[
							{ required: true, message: 'Please enter position address' },
							{
								pattern: /^[1-9A-HJ-NP-Za-km-z]{32,44}$/,
								message: 'Invalid Solana address format',
							},
						]}
					>
						<Input
							placeholder="Enter the NFT mint address of the position to copy"
							size="large"
						/>
					</Form.Item>

					<Form.Item
						label="Maximum Investment (USD)"
						name="maxUsdValue"
						rules={[
							{ required: true, message: 'Please enter maximum USD value' },
							{
								type: 'number',
								min: 0.01,
								message: 'Must be greater than 0.01',
							},
						]}
					>
						<InputNumber
							placeholder="e.g., 5, 10, 50"
							min={0.01}
							step={1}
							style={{ width: '100%' }}
							size="large"
							formatter={(value) =>
								`$ ${value}`.replace(/\B(?=(\d{3})+(?!\d))/g, ',')
							}
							parser={(value) => {
								const parsed = value?.replace(/\$\s?|(,*)/g, '') || '0'
								return parseFloat(parsed) || 0
							}}
						/>
					</Form.Item>

					<Form.Item>
						<Button
							type="primary"
							htmlType="submit"
							size="large"
							icon={loading ? <LoadingOutlined /> : <CopyOutlined />}
							loading={loading}
							block
						>
							{loading ? 'Copying Position...' : 'Copy Position'}
						</Button>
					</Form.Item>
				</Form>
			</Card>

			{positionInfo && (
				<Card style={{ marginTop: '24px' }} title="Position Details">
					<Descriptions column={1} bordered>
						<Descriptions.Item label="Pool Address">
							<Text code>{positionInfo.poolAddress}</Text>
						</Descriptions.Item>
						<Descriptions.Item label="Tick Range">
							{positionInfo.tickLower} - {positionInfo.tickUpper}
						</Descriptions.Item>
						<Descriptions.Item label="Price Range">
							{positionInfo.priceLower} - {positionInfo.priceUpper}
						</Descriptions.Item>
						<Descriptions.Item label="Base Token">
							{positionInfo.base}
						</Descriptions.Item>
						<Descriptions.Item label="Base Amount">
							{positionInfo.baseAmount}
						</Descriptions.Item>
						<Descriptions.Item label="Other Amount Max">
							{positionInfo.otherAmountMax}
						</Descriptions.Item>
						<Descriptions.Item label="Estimated Value">
							${positionInfo.estimatedValue.toFixed(2)} USD
						</Descriptions.Item>
					</Descriptions>
				</Card>
			)}

			<Card style={{ marginTop: '24px' }}>
				<Title level={4}>How it works:</Title>
				<Space orientation="vertical" size="small">
					<Text>
						1. Enter the NFT mint address of the position you want to copy
					</Text>
					<Text>2. Set your maximum investment amount in USD</Text>
					<Text>3. The system will automatically:</Text>
					<Text style={{ marginLeft: '16px' }}>
						• Fetch the position details (price range, pool info)
					</Text>
					<Text style={{ marginLeft: '16px' }}>
						• Calculate optimal token amounts within your budget
					</Text>
					<Text style={{ marginLeft: '16px' }}>
						• Create a new position with the same price range
					</Text>
					<Text style={{ marginLeft: '16px' }}>
						• Add a memo linking to the original position
					</Text>
				</Space>
			</Card>
		</div>
	)
}