import * as THREE from '../../build/three.module.js';

import { zipSync, strToU8 } from '../../examples/jsm/libs/fflate.module.js';

import { UIPanel, UIRow, UIHorizontalRule } from './libs/ui.js';

function MenubarFile( editor ) {

	function parseNumber( key, value ) {

		var precision = config.getKey( 'exportPrecision' );

		return typeof value === 'number' ? parseFloat( value.toFixed( precision ) ) : value;

	}

	//

	var config = editor.config;
	var strings = editor.strings;

	var container = new UIPanel();
	container.setClass( 'menu' );

	var title = new UIPanel();
	title.setClass( 'title' );
	title.setTextContent( strings.getKey( 'menubar/file' ) );
	container.add( title );

	var options = new UIPanel();
	options.setClass( 'options' );
	container.add( options );

	// New

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/new' ) );
	option.onClick( function () {

		if ( confirm( 'Any unsaved data will be lost. Are you sure?' ) ) {

			editor.clear();

		}

	} );
	options.add( option );

	//

	options.add( new UIHorizontalRule() );

	// Import

	var form = document.createElement( 'form' );
	form.style.display = 'none';
	document.body.appendChild( form );

	var fileInput = document.createElement( 'input' );
	fileInput.multiple = true;
	fileInput.type = 'file';
	fileInput.addEventListener( 'change', function () {

		editor.loader.loadFiles( fileInput.files );
		form.reset();

	} );
	form.appendChild( fileInput );

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/import' ) );
	option.onClick( function () {

		fileInput.click();

	} );
	options.add( option );

	//

	options.add( new UIHorizontalRule() );

	// Export Geometry

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/geometry' ) );
	option.onClick( function () {

		var object = editor.selected;

		if ( object === null ) {

			alert( 'No object selected.' );
			return;

		}

		var geometry = object.geometry;

		if ( geometry === undefined ) {

			alert( 'The selected object doesn\'t have geometry.' );
			return;

		}

		var output = geometry.toJSON();

		try {

			output = JSON.stringify( output, parseNumber, '\t' );
			output = output.replace( /[\n\t]+([\d\.e\-\[\]]+)/g, '$1' );

		} catch ( e ) {

			output = JSON.stringify( output );

		}

		saveString( output, 'geometry.json' );

	} );
	options.add( option );

	// Export Object

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/object' ) );
	option.onClick( function () {

		var object = editor.selected;

		if ( object === null ) {

			alert( 'No object selected' );
			return;

		}

		var output = object.toJSON();

		try {

			output = JSON.stringify( output, parseNumber, '\t' );
			output = output.replace( /[\n\t]+([\d\.e\-\[\]]+)/g, '$1' );

		} catch ( e ) {

			output = JSON.stringify( output );

		}

		saveString( output, 'model.json' );

	} );
	options.add( option );

	// Export Scene

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/scene' ) );
	option.onClick( function () {

		var output = editor.scene.toJSON();

		try {

			output = JSON.stringify( output, parseNumber, '\t' );
			output = output.replace( /[\n\t]+([\d\.e\-\[\]]+)/g, '$1' );

		} catch ( e ) {

			output = JSON.stringify( output );

		}

		saveString( output, 'scene.json' );

	} );
	options.add( option );

	//

	options.add( new UIHorizontalRule() );

	// Export DAE

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/dae' ) );
	option.onClick( async function () {

		var { ColladaExporter } = await import( '../../examples/jsm/exporters/ColladaExporter.js' );

		var exporter = new ColladaExporter();

		exporter.parse( editor.scene, function ( result ) {

			saveString( result.data, 'scene.dae' );

		} );

	} );
	options.add( option );

	// Export DRC

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/drc' ) );
	option.onClick( async function () {

		var object = editor.selected;

		if ( object === null || object.isMesh === undefined ) {

			alert( 'No mesh selected' );
			return;

		}

		var { DRACOExporter } = await import( '../../examples/jsm/exporters/DRACOExporter.js' );

		var exporter = new DRACOExporter();

		// TODO: Change to DRACOExporter's parse( geometry, onParse )?
		var result = exporter.parse( object );
		saveArrayBuffer( result, 'model.drc' );

	} );
	options.add( option );

	// Export GLB

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/glb' ) );
	option.onClick( async function () {

		var scene = editor.scene;
		var animations = getAnimations( scene );

		var { GLTFExporter } = await import( '../../examples/jsm/exporters/GLTFExporter.js' );

		var exporter = new GLTFExporter();

		exporter.parse( scene, function ( result ) {

			saveArrayBuffer( result, 'scene.glb' );

		}, { binary: true, animations: animations } );

	} );
	options.add( option );

	// Export GLTF

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/gltf' ) );
	option.onClick( async function () {

		var scene = editor.scene;
		var animations = getAnimations( scene );

		var { GLTFExporter } = await import( '../../examples/jsm/exporters/GLTFExporter.js' );

		var exporter = new GLTFExporter();

		exporter.parse( scene, function ( result ) {

			saveString( JSON.stringify( result, null, 2 ), 'scene.gltf' );

		}, { animations: animations } );


	} );
	options.add( option );

	// Export OBJ

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/obj' ) );
	option.onClick( async function () {

		var object = editor.selected;

		if ( object === null ) {

			alert( 'No object selected.' );
			return;

		}

		var { OBJExporter } = await import( '../../examples/jsm/exporters/OBJExporter.js' );

		var exporter = new OBJExporter();

		saveString( exporter.parse( object ), 'model.obj' );

	} );
	options.add( option );

	// Export PLY (ASCII)

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/ply' ) );
	option.onClick( async function () {

		var { PLYExporter } = await import( '../../examples/jsm/exporters/PLYExporter.js' );

		var exporter = new PLYExporter();

		exporter.parse( editor.scene, function ( result ) {

			saveArrayBuffer( result, 'model.ply' );

		} );

	} );
	options.add( option );

	// Export PLY (Binary)

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/ply_binary' ) );
	option.onClick( async function () {

		var { PLYExporter } = await import( '../../examples/jsm/exporters/PLYExporter.js' );

		var exporter = new PLYExporter();

		exporter.parse( editor.scene, function ( result ) {

			saveArrayBuffer( result, 'model-binary.ply' );

		}, { binary: true } );

	} );
	options.add( option );

	// Export STL (ASCII)

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/stl' ) );
	option.onClick( async function () {

		var { STLExporter } = await import( '../../examples/jsm/exporters/STLExporter.js' );

		var exporter = new STLExporter();

		saveString( exporter.parse( editor.scene ), 'model.stl' );

	} );
	options.add( option );

	// Export STL (Binary)

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/stl_binary' ) );
	option.onClick( async function () {

		var { STLExporter } = await import( '../../examples/jsm/exporters/STLExporter.js' );

		var exporter = new STLExporter();

		saveArrayBuffer( exporter.parse( editor.scene, { binary: true } ), 'model-binary.stl' );

	} );
	options.add( option );

	// Export USDZ

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/export/usdz' ) );
	option.onClick( async function () {

		var { USDZExporter } = await import( '../../examples/jsm/exporters/USDZExporter.js' );

		var exporter = new USDZExporter();

		saveArrayBuffer( await exporter.parse( editor.scene, { binary: true } ), 'model.usdz' );

	} );
	options.add( option );

	//

	options.add( new UIHorizontalRule() );

	// Publish

	var option = new UIRow();
	option.setClass( 'option' );
	option.setTextContent( strings.getKey( 'menubar/file/publish' ) );
	option.onClick( function () {

		var toZip = {};

		//

		var output = editor.toJSON();
		output.metadata.type = 'App';
		delete output.history;

		output = JSON.stringify( output, parseNumber, '\t' );
		output = output.replace( /[\n\t]+([\d\.e\-\[\]]+)/g, '$1' );

		toZip[ 'app.json' ] = strToU8( output );

		//

		var title = config.getKey( 'project/title' );

		var manager = new THREE.LoadingManager( function () {

			var zipped = zipSync( toZip, { level: 9 } );

			var blob = new Blob( [ zipped.buffer ], { type: 'application/zip' } );

			save( blob, ( title !== '' ? title : 'untitled' ) + '.zip' );

		} );

		var loader = new THREE.FileLoader( manager );
		loader.load( 'js/libs/app/index.html', function ( content ) {

			content = content.replace( '<!-- title -->', title );

			var includes = [];

			content = content.replace( '<!-- includes -->', includes.join( '\n\t\t' ) );

			var editButton = '';

			if ( config.getKey( 'project/editable' ) ) {

				editButton = [
					'',
					'			var button = document.createElement( \'a\' );',
					'			button.href = \'https://threejs.org/editor/#file=\' + location.href.split( \'/\' ).slice( 0, - 1 ).join( \'/\' ) + \'/app.json\';',
					'			button.style.cssText = \'position: absolute; bottom: 20px; right: 20px; padding: 10px 16px; color: #fff; border: 1px solid #fff; border-radius: 20px; text-decoration: none;\';',
					'			button.target = \'_blank\';',
					'			button.textContent = \'EDIT\';',
					'			document.body.appendChild( button );',
					''
				].join( '\n' );

			}

			content = content.replace( '\n\t\t\t/* edit button */\n', editButton );

			toZip[ 'index.html' ] = strToU8( content );

		} );
		loader.load( 'js/libs/app.js', function ( content ) {

			toZip[ 'js/app.js' ] = strToU8( content );

		} );
		loader.load( '../build/three.module.js', function ( content ) {

			toZip[ 'js/three.module.js' ] = strToU8( content );

		} );
		loader.load( '../examples/jsm/webxr/VRButton.js', function ( content ) {

			toZip[ 'js/VRButton.js' ] = strToU8( content );

		} );

	} );
	options.add( option );

	//

	var link = document.createElement( 'a' );
	function save( blob, filename ) {

		if ( link.href ) {

			URL.revokeObjectURL( link.href );

		}

		link.href = URL.createObjectURL( blob );
		link.download = filename || 'data.json';
		link.dispatchEvent( new MouseEvent( 'click' ) );

	}

	function saveArrayBuffer( buffer, filename ) {

		save( new Blob( [ buffer ], { type: 'application/octet-stream' } ), filename );

	}

	function saveString( text, filename ) {

		save( new Blob( [ text ], { type: 'text/plain' } ), filename );

	}

	function getAnimations( scene ) {

		var animations = [];

		scene.traverse( function ( object ) {

			animations.push( ... object.animations );

		} );

		return animations;

	}

	return container;

}

export { MenubarFile };