/*
 * ExportSelectionTool.js
 *
 * @author realor
 */

import { Tool } from './Tool.js'
import { Controls } from '../ui/Controls.js'
import { PropertySelectorDialog } from '../ui/PropertySelectorDialog.js'
import { MessageDialog } from '../ui/MessageDialog.js'
import { ObjectUtils } from '../utils/ObjectUtils.js'
import * as THREE from '../lib/three.module.js'

class ExportSelectionTool extends Tool {
    constructor(application, options) {
        super(application)
        this.name = 'export_selection'
        this.label = 'tool.export_selection.label'
        this.help = 'tool.export_selection.help'
        this.className = 'export_selection'
        this.setOptions(options)
        this.immediate = true

        this.dialog = new PropertySelectorDialog(this.application, {
            title: 'title.export_selection',
            selectValues: false,
            treeLabel: 'label.selection_properties',
            editorLabel: 'label.exported_properties',
            findPropertiesOnSelection: true
        })
        const dialog = this.dialog

        this.addButton = dialog.addContextButton('add_prop', 'button.add', () => this.addProperty())

        this.clearButton = dialog.addContextButton('clear_prop', 'button.clear', () => this.clearProperties())

        dialog.onAccept = () => this.exportProperties()

        dialog.updateContextButtons = () => {
            let path = dialog.getSelectedNodePath()
            this.addButton.disabled = path.length === 0
        }
    }

    execute() {
        this.dialog.show()
    }

    addProperty() {
        const dialog = this.dialog
        let path = dialog.getSelectedNodePath()
        let propertyMap = dialog.propertyMap

        let paths = []
        if (path.length === 1) {
            let items = propertyMap.get(path[0])
            if (items instanceof Map) {
                for (let key of items.keys()) {
                    paths.push([path[0], key])
                }
            } else paths.push(path)
        } else paths.push(path)

        for (let path of paths) {
            let line = '"' + path[path.length - 1] + '" : $('
            for (let i = 0; i < path.length; i++) {
                let part = path[i]
                if (i > 0) line += ', '
                line += '"' + part + '"'
            }
            line += ')'

            dialog.appendCode(line + '\n')
        }
    }

    clearProperties() {
        const dialog = this.dialog
        dialog.setCode('')
    }

    exportProperties() {
        const application = this.application
        const dialog = this.dialog

        try {
            let properties = dialog.getCode()

            let lines = properties.split('\n').filter(line => line.trim().length > 0)
            let exportExpression = '{' + lines.join(',') + '}'
            let exportedData = []

            let fn = ObjectUtils.createEvalFunction(exportExpression)

            let headersObject = fn(new THREE.Object3D())

            let headers = []
            for (let key in headersObject) {
                headers.push(key)
            }
            exportedData.push(headers.join(';'))

            let objects = application.selection.objects
            for (let object of objects) {
                exportedData.push(this.toCSVRow(fn(object)))
            }
            let csv = '\uFEFF' + exportedData.join('\n')
            const blob = new Blob([csv], { type: 'text/csv' })
            let url = window.URL.createObjectURL(blob)

            let linkElem = document.createElement('a')
            linkElem.download = 'export.csv'
            linkElem.target = '_blank'
            linkElem.href = url
            linkElem.style.display = 'block'
            linkElem.click()

            dialog.hide()
        } catch (ex) {
            MessageDialog.create('ERROR', ex)
                .setClassName('error')
                .setI18N(this.application.i18n)
                .show()
        }
    }

    toCSVRow(data) {
        let line = ''
        for (let columnName in data) {
            let value = data[columnName]
            if (line.length > 0) line += ';'
            if (value === undefined) {
            } else if (typeof value === 'string') {
                line += '"' + value + '"'
            } else if (typeof value === 'number') {
                line += ('' + value).replace('.', ',')
            } else line += value
        }
        return line
    }
}

export { ExportSelectionTool }