document.addEventListener( 'DOMContentLoaded', () => {
	const bulkActionsRow = document.querySelector(
		'.wc-order-data-row.wc-order-bulk-actions'
	);
	const totalsRow = document.querySelector(
		'.wc-order-data-row.wc-order-totals-items'
	);
	const cancelRow = document.getElementById( 'cancel_items_container' );
	const itemsTable = document.querySelector(
		'table.woocommerce_order_items'
	);

	if ( ! bulkActionsRow || ! cancelRow || ! itemsTable ) {
		return;
	}

	bulkActionsRow.insertAdjacentElement( 'afterend', cancelRow );

	const show = ( el ) => {
		if ( ! el ) {
			return;
		}
		el.style.display = el.tagName === 'TR' ? 'table-row' : 'block';
	};
	const hide = ( el ) => el && ( el.style.display = 'none' );

	let manualCancelAmount = false;

	function getPriceFormat() {
		const w =
			( typeof window !== 'undefined' &&
				window.woocommerce_admin_meta_boxes ) ||
			{};
		const decimals = parseInt( w.currency_format_num_decimals, 10 );
		return {
			decimal: w.currency_format_decimal_sep || '.',
			thousand: w.currency_format_thousand_sep ?? ',',
			decimals: Number.isFinite( decimals ) && decimals >= 0 ? decimals : 2,
		};
	}

	function parsePrice( v ) {
		const { decimal, thousand } = getPriceFormat();
		let cleaned = String( v || '' ).replace( /\s/g, '' );
		if ( thousand ) {
			cleaned = cleaned.split( thousand ).join( '' );
		}
		cleaned = cleaned
			.replace( decimal, '.' )
			.replace( /[^0-9.\-]/g, '' );
		const n = parseFloat( cleaned );
		return Number.isFinite( n ) ? n : 0;
	}

	function parsePriceComma( v ) {
		return parsePrice( v );
	}

	function formatComma( n ) {
		const { decimal, decimals } = getPriceFormat();
		return ( Number.isFinite( n ) ? n : 0 )
			.toFixed( decimals )
			.replace( '.', decimal );
	}

	function extractNumber( text ) {
		return parsePrice( text );
	}

	function updateCancelTotals() {
		let total = 0;

		itemsTable.querySelectorAll( '.wl-line-total' ).forEach( ( el ) => {
			total += parsePriceComma( el.value );
		} );

		const amountInput = cancelRow.querySelector( '.wl-cancel-amount' );
		const btnTotal = cancelRow.querySelector( '.wl-cancel-btn-total' );

		if ( amountInput && ! manualCancelAmount ) {
			amountInput.value = formatComma( total );
		}

		const displayed =
			amountInput && manualCancelAmount
				? parsePriceComma( amountInput.value )
				: total;

		if ( btnTotal ) {
			btnTotal.textContent = formatComma( displayed );
		}
	}

	function applyCancelInputsToItems() {
		const rows = itemsTable.querySelectorAll(
			'tr.item, tr.shipping, tr.fee'
		);

		rows.forEach( ( row ) => {
			const qtyTd = row.querySelector( 'td.quantity' );
			const totalTd = row.querySelector( 'td.line_cost' );
			if ( ! totalTd ) {
				return;
			}

			if ( qtyTd && ! qtyTd.dataset.wlOrig ) {
				qtyTd.dataset.wlOrig = qtyTd.innerHTML;
			}
			if ( ! totalTd.dataset.wlOrig ) {
				totalTd.dataset.wlOrig = totalTd.innerHTML;
			}

			const viewEl = totalTd.querySelector( '.view' ) || totalTd;
			const currentTotal = extractNumber( viewEl.textContent || '0' );

			if ( row.classList.contains( 'item' ) && qtyTd ) {
				const origQty = extractNumber( qtyTd.textContent ) || 0;
				const unit = origQty > 0 ? currentTotal / origQty : 0;

				qtyTd.innerHTML = `
${ qtyTd.dataset.wlOrig }
<div class="edit" style="margin-top:6px;">
    <input type="number"
           class="input-text wl-cancel-qty"
           min="0"
           max="${ origQty }"
           value="0"
           data-unit="${ unit }"
           style="width:60px;">
</div>
`;

				totalTd.innerHTML = `
${ totalTd.dataset.wlOrig }
<div class="edit" style="margin-top:6px;">
    <input type="text"
           class="input-text wl-line-total"
           value=""
           inputmode="decimal"
           autocomplete="off">
</div>
`;
				return;
			}

			totalTd.innerHTML = `
${ totalTd.dataset.wlOrig }
<div class="edit" style="margin-top:6px;">
    <input type="text"
           class="input-text wl-line-total"
           value=""
           value="${ formatComma( currentTotal ) }"
           inputmode="decimal"
           autocomplete="off">
</div>
`;
		} );
	}

	function parseLocalizedPrice( v ) {
		return parsePrice( v );
	}

	function restoreItemsTable() {
		itemsTable
			.querySelectorAll( 'tr.item, tr.fee, tr.shipping' )
			.forEach( ( row ) => {
				const qtyTd = row.querySelector( 'td.quantity' );
				const totalTd = row.querySelector( 'td.line_cost' );

				if ( qtyTd && qtyTd.dataset.wlOrig ) {
					qtyTd.innerHTML = qtyTd.dataset.wlOrig;
				}
				if ( totalTd && totalTd.dataset.wlOrig ) {
					totalTd.innerHTML = totalTd.dataset.wlOrig;
				}
			} );
	}

	function openCancel() {
		manualCancelAmount = false;
		hide( bulkActionsRow );
		if ( totalsRow ) {
			hide( totalsRow );
		}
		show( cancelRow );
		applyCancelInputsToItems();
		updateCancelTotals();
	}

	function closeCancel() {
		restoreItemsTable();
		hide( cancelRow );
		show( bulkActionsRow );
		if ( totalsRow ) {
			show( totalsRow );
		}
	}

	document.body.addEventListener( 'input', ( e ) => {
		const amountEl = e.target.closest( '.wl-cancel-amount' );
		if ( ! amountEl ) {
			return;
		}

		manualCancelAmount = true;
		updateCancelTotals();
	} );

	document.body.addEventListener( 'click', ( e ) => {
		if ( e.target.closest( '.do-cancel-items' ) ) {
			e.preventDefault();
			openCancel();
			return;
		}
		if ( e.target.closest( '.wl-cancel-close, .cancel-cancel' ) ) {
			e.preventDefault();
			closeCancel();
		}
	} );

	document.body.addEventListener( 'input', ( e ) => {
		const qtyEl = e.target.closest( '.wl-cancel-qty' );
		if ( ! qtyEl ) {
			return;
		}

		manualCancelAmount = false;

		const unit = parseFloat( qtyEl.dataset.unit ) || 0;
		const q = parseFloat( qtyEl.value ) || 0;

		const row = qtyEl.closest( 'tr' );
		const totalInput = row?.querySelector( '.wl-line-total' );
		if ( totalInput ) {
			const raw = unit * q;
			totalInput.value = formatComma( raw );
		}

		updateCancelTotals();
	} );

	document.body.addEventListener( 'input', ( e ) => {
		const totalEl = e.target.closest( '.wl-line-total' );
		if ( ! totalEl ) {
			return;
		}

		manualCancelAmount = false;

		updateCancelTotals();
	} );

	document.body.addEventListener(
		'blur',
		( e ) => {
			const totalEl = e.target.closest( '.wl-line-total' );
			if ( totalEl ) {
				totalEl.value = formatComma( parsePriceComma( totalEl.value ) );
				updateCancelTotals();
				return;
			}

			const amountEl = e.target.closest( '.wl-cancel-amount' );
			if ( amountEl ) {
				amountEl.value = formatComma(
					parsePriceComma( amountEl.value )
				);
				updateCancelTotals();
			}
		},
		true
	);

	document.body.addEventListener( 'click', ( e ) => {
		const btn = e.target.closest( '.wl-cancel-submit' );
		if ( ! btn ) {
			return;
		}

		const amount = document.querySelector( '.wl-cancel-amount' ).value;
		const params = new URLSearchParams( window.location.search );
		const orderId = params.get( 'id' ) || params.get( 'post' );

		fetch( ajaxurl, {
			method: 'POST',
			body: new URLSearchParams( {
				action: 'worldline_cancel_authorization',
				order_id: orderId,
				amount,
			} ),
		} )
			.then( ( r ) => r.json() )
			.then( ( res ) => {
				if ( ! res.success ) {
					alert( res.data.message );
				} else {
					alert(
						res.data.message ||
							'Cancellation submitted successfully.'
					);
					setTimeout( () => window.location.reload(), 1500 );
				}
			} );
	} );

	hide( cancelRow );
} );
