import express from 'express'
import { pool } from '../../config/index.js'
import { check, validationResult } from 'express-validator'

const router = express.Router()

// Get all items
router.get('/', async (req, res) => {
	const client = await pool.connect()
	try {
		const result = await client.query('SELECT * FROM items')
		res.json(result.rows)
	} finally {
		client.release()
	}
})

// Get a single item by id
router.get('/:id', async (req, res) => {
	const { id } = req.params
	const client = await pool.connect()
	try {
		const result = await client.query('SELECT * FROM items WHERE id = $1', [id])
		if (result.rows.length === 0) {
			return res.status(404).json({ message: 'Item not found' })
		}
		res.json(result.rows[0])
	} finally {
		client.release()
	}
})

// Create a new item
router.post(
	'/',
	[
		check('collection_id').not().isEmpty(),
		check('image_id').not().isEmpty(),
		check('productId').not().isEmpty(),
		check('name').not().isEmpty(),
		check('cleanName').not().isEmpty(),
		check('extCardText').not().isEmpty(),
		check('marketPrice').not().isEmpty(),
		check('extRarity').not().isEmpty(),
		check('set_id').not().isEmpty(), // Add validation for set_id
	],
	async (req, res) => {
		const errors = validationResult(req)
		if (!errors.isEmpty()) {
			return res.status(400).json({ errors: errors.array() })
		}
		const {
			collection_id,
			image_id,
			productId,
			name,
			cleanName,
			extCardText,
			marketPrice,
			extRarity,
			set_id,
		} = req.body
		const client = await pool.connect()
		try {
			const result = await client.query(
				'INSERT INTO items (collection_id, image_id, productId, name, cleanName, extCardText, marketPrice, extRarity, set_id, created_at, updated_at) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, NOW(), NOW()) RETURNING *',
				[
					collection_id,
					image_id,
					productId,
					name,
					cleanName,
					extCardText,
					marketPrice,
					extRarity,
					set_id,
				]
			)
			res.status(201).json(result.rows[0])
		} finally {
			client.release()
		}
	}
)

// Update an existing item
router.put('/:id', async (req, res) => {
	const { id } = req.params
	const updates = {}
	if (req.body.collection_id) updates.collection_id = req.body.collection_id
	if (req.body.image_id) updates.image_id = req.body.image_id
	if (req.body.productId) updates.productId = req.body.productId
	if (req.body.name) updates.name = req.body.name
	if (req.body.cleanName) updates.cleanName = req.body.cleanName
	if (req.body.extCardText) updates.extCardText = req.body.extCardText
	if (req.body.marketPrice) updates.marketPrice = req.body.marketPrice
	if (req.body.extRarity) updates.extRarity = req.body.extRarity
	const client = await pool.connect()
	try {
		if (Object.keys(updates).length > 0) {
			const updateFields = Object.keys(updates)
				.map((key) => `${key} = $${Object.keys(updates).indexOf(key) + 2}`)
				.join(', ')
			updates.updated_at = 'NOW()'
			const result = await client.query(
				`UPDATE items SET ${updateFields}, updated_at = $${Object.keys(updates).length + 1} WHERE id = $1 RETURNING *`,
				[id, ...Object.values(updates)]
			)
			return res.json(result.rows[0])
		}
		if (result.rows.length === 0) {
			return res.status(404).json({ message: 'Item not found' })
		} else {
			return res.status(204).json()
		}
	} finally {
		client.release()
	}
})

// Delete an item
router.delete('/:id', async (req, res) => {
	const { id } = req.params
	const client = await pool.connect()
	try {
		const result = await client.query('DELETE FROM items WHERE id = $1', [id])
		if (result.rows.length === 0) {
			return res.status(404).json({ message: 'Item not found' })
		}
		res.json({ message: 'Item deleted' })
	} finally {
		client.release()
	}
})

// Create a new item from CSV
router.post(
	'/csv',
	[
		check('collection_id').not().isEmpty(),
		check('set_id').not().isEmpty(), // Add validation for set_id
	],
	async (req, res) => {
		const errors = validationResult(req)
		if (!errors.isEmpty()) {
			return res.status(400).json({ errors: errors.array() })
		}
		const { collection_id, set_id } = req.body
		const csvBuffer = req.files.file.buffer.toString('utf8')
		const csvLines = csvBuffer
			.split('\n')
			.filter((line) => line.trim().length > 0)
		const client = await pool.connect()
		try {
			// Insert each row into the items table
			for (const line of csvLines) {
				const [
					productId,
					name,
					cleanName,
					imageUrl,
					categoryId,
					groupId,
					url,
					modifiedOn,
					imageCount,
					extCardText,
					extUPC,
					lowPrice,
					midPrice,
					highPrice,
					marketPrice,
					directLowPrice,
					subTypeName,
					extNumber,
					extRarity,
					extCardType,
					extHP,
					extStage,
					extAttack1,
					extWeakness,
					extRetreatCost,
					extAttack2,
					extResistance,
				] = line.split(',').map((value) => value.trim())
				// Fetch the image from imageUrl
				const imageResponse = await fetch(imageUrl)
				const imageBuffer = await imageResponse.buffer()

				// Insert the image into the images table
				const insertImageResult = await client.query(
					'INSERT INTO images (file, image) VALUES ($1::TEXT, $2::BYTEA) RETURNING id',
					[`${productId}.jpg`, imageBuffer]
				)

				await client.query(
					'INSERT INTO items (collection_id, image_id, productId, name, cleanName, extCardText, marketPrice, extRarity, set_id, created_at, updated_at) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, NOW(), NOW())',
					[
						collection_id,
						insertImageResult.rows[0].id,
						productId,
						name,
						cleanName,
						extCardText,
						marketPrice,
						extRarity,
						set_id,
					]
				)
			}
			res.status(201).json({ message: 'Items created' })
		} finally {
			client.release()
		}
	}
)

export default router