import { UITypes } from 'nocodb-sdk' import TemplateGenerator from './TemplateGenerator' import { extractMultiOrSingleSelectProps, getCheckboxValue, getDateFormat, isCheckboxType, isEmailType, isMultiLineTextType, isUrlType, } from '#imports' const excelTypeToUidt: Record = { d: UITypes.DateTime, b: UITypes.Checkbox, n: UITypes.Number, s: UITypes.SingleLineText, } export default class ExcelTemplateAdapter extends TemplateGenerator { config: Record excelData: any project: { tables: Record[] } data: Record = {} wb: any xlsx: typeof import('xlsx') constructor(data = {}, parserConfig = {}) { super() this.config = parserConfig this.excelData = data this.project = { tables: [], } this.xlsx = {} as any } async init() { this.xlsx = await import('xlsx') const options = { cellText: true, cellDates: true, } this.wb = this.xlsx.read(new Uint8Array(this.excelData), { type: 'array', ...options, }) } async parse() { const tableNamePrefixRef: Record = {} await Promise.all( this.wb.SheetNames.map((sheetName: string) => (async (sheet) => { await new Promise((resolve) => { const columnNamePrefixRef: Record = { id: 0 } let tn: string = (sheet || 'table').replace(/[` ~!@#$%^&*()_|+\-=?;:'",.<>\{\}\[\]\\\/]/g, '_').trim() while (tn in tableNamePrefixRef) { tn = `${tn}${++tableNamePrefixRef[tn]}` } tableNamePrefixRef[tn] = 0 const table = { table_name: tn, ref_table_name: tn, columns: [] as any[] } const ws: any = this.wb.Sheets[sheet] const range = this.xlsx.utils.decode_range(ws['!ref']) let rows: any = this.xlsx.utils.sheet_to_json(ws, { // header has to be 1 disregarding this.config.firstRowAsHeaders // so that it generates an array of arrays header: 1, blankrows: false, defval: null, }) // fix precision bug & timezone offset issues introduced by xlsx const basedate = new Date(1899, 11, 30, 0, 0, 0) // number of milliseconds since base date const dnthresh = basedate.getTime() + (new Date().getTimezoneOffset() - basedate.getTimezoneOffset()) * 60000 // number of milliseconds in a day const day_ms = 24 * 60 * 60 * 1000 // handle date1904 property const fixImportedDate = (date: Date) => { const parsed = this.xlsx.SSF.parse_date_code((date.getTime() - dnthresh) / day_ms, { date1904: this.wb.Workbook.WBProps.date1904, }) return new Date(parsed.y, parsed.m, parsed.d, parsed.H, parsed.M, parsed.S) } // fix imported date rows = rows.map((r: any) => r.map((v: any) => { return v instanceof Date ? fixImportedDate(v) : v }), ) for (let col = 0; col < rows[0].length; col++) { let cn: string = ( (this.config.firstRowAsHeaders && rows[0] && rows[0][col] && rows[0][col].toString().trim()) || `field_${col + 1}` ) .replace(/[` ~!@#$%^&*()_|+\-=?;:'",.<>\{\}\[\]\\\/]/g, '_') .trim() while (cn in columnNamePrefixRef) { cn = `${cn}${++columnNamePrefixRef[cn]}` } columnNamePrefixRef[cn] = 0 const column: Record = { column_name: cn, ref_column_name: cn, meta: {}, uidt: UITypes.SingleLineText, } if (this.config.autoSelectFieldTypes) { const cellId = this.xlsx.utils.encode_cell({ c: range.s.c + col, r: +this.config.firstRowAsHeaders, }) const cellProps = ws[cellId] || {} column.uidt = excelTypeToUidt[cellProps.t] || UITypes.SingleLineText if (column.uidt === UITypes.SingleLineText) { // check for long text if (isMultiLineTextType(rows)) { column.uidt = UITypes.LongText } if (isEmailType(rows)) { column.uidt = UITypes.Email } if (isUrlType(rows)) { column.uidt = UITypes.URL } else { const vals = rows .slice(+this.config.firstRowAsHeaders) .map((r: any) => r[col]) .filter((v: any) => v !== null && v !== undefined && v.toString().trim() !== '') const checkboxType = isCheckboxType(vals) if (checkboxType.length === 1) { column.uidt = UITypes.Checkbox } else { // Single Select / Multi Select Object.assign(column, extractMultiOrSingleSelectProps(vals)) } } } else if (column.uidt === UITypes.Number) { if ( rows.slice(1, this.config.maxRowsToParse).every((v: any) => { return v && v[col] && parseInt(v[col]) !== +v[col] }) ) { column.uidt = UITypes.Decimal } if ( rows.slice(1, this.config.maxRowsToParse).every((v: any, i: any) => { const cellId = this.xlsx.utils.encode_cell({ c: range.s.c + col, r: i + +this.config.firstRowAsHeaders, }) const cellObj = ws[cellId] return !cellObj || (cellObj.w && cellObj.w.startsWith('$')) }) ) { column.uidt = UITypes.Currency } if ( rows.slice(1, this.config.maxRowsToParse).some((v: any, i: any) => { const cellId = this.xlsx.utils.encode_cell({ c: range.s.c + col, r: i + +this.config.firstRowAsHeaders, }) const cellObj = ws[cellId] return !cellObj || (cellObj.w && !(!isNaN(Number(cellObj.w)) && !isNaN(parseFloat(cellObj.w)))) }) ) { // fallback to SingleLineText column.uidt = UITypes.SingleLineText } } else if (column.uidt === UITypes.DateTime) { // TODO(import): centralise // hold the possible date format found in the date const dateFormat: Record = {} if ( rows.slice(1, this.config.maxRowsToParse).every((v: any, i: any) => { const cellId = this.xlsx.utils.encode_cell({ c: range.s.c + col, r: i + +this.config.firstRowAsHeaders, }) const cellObj = ws[cellId] const isDate = !cellObj || (cellObj.w && cellObj.w.split(' ').length === 1) if (isDate && cellObj) { dateFormat[getDateFormat(cellObj.w)] = (dateFormat[getDateFormat(cellObj.w)] || 0) + 1 } return isDate }) ) { column.uidt = UITypes.Date // take the date format with the max occurrence column.meta.date_format = Object.keys(dateFormat).reduce((x, y) => (dateFormat[x] > dateFormat[y] ? x : y)) || 'YYYY/MM/DD' } } } table.columns.push(column) } this.project.tables.push(table) this.data[tn] = [] if (this.config.shouldImportData) { let rowIndex = 0 for (const row of rows.slice(1)) { const rowData: Record = {} for (let i = 0; i < table.columns.length; i++) { if (!this.config.autoSelectFieldTypes) { // take raw data instead of data parsed by xlsx const cellId = this.xlsx.utils.encode_cell({ c: range.s.c + i, r: rowIndex + +this.config.firstRowAsHeaders, }) const cellObj = ws[cellId] rowData[table.columns[i].column_name] = (cellObj && cellObj.w) || row[i] } else { if (table.columns[i].uidt === UITypes.Checkbox) { rowData[table.columns[i].column_name] = getCheckboxValue(row[i]) } else if (table.columns[i].uidt === UITypes.Currency) { const cellId = this.xlsx.utils.encode_cell({ c: range.s.c + i, r: rowIndex + +this.config.firstRowAsHeaders, }) const cellObj = ws[cellId] rowData[table.columns[i].column_name] = (cellObj && cellObj.w && cellObj.w.replace(/[^\d.]+/g, '')) || row[i] } else if (table.columns[i].uidt === UITypes.SingleSelect || table.columns[i].uidt === UITypes.MultiSelect) { rowData[table.columns[i].column_name] = (row[i] || '').toString().trim() || null } else if (table.columns[i].uidt === UITypes.Date) { const cellId = this.xlsx.utils.encode_cell({ c: range.s.c + i, r: rowIndex + +this.config.firstRowAsHeaders, }) const cellObj = ws[cellId] rowData[table.columns[i].column_name] = (cellObj && cellObj.w) || row[i] } else { // TODO: do parsing if necessary based on type rowData[table.columns[i].column_name] = row[i] } } } this.data[tn].push(rowData) rowIndex++ } } resolve(true) }) })(sheetName), ), ) } getTemplate() { return this.project } getData() { return this.data } getColumns() { return this.project.tables.map((t: Record) => t.columns) } }