add excel import and export

build.gradle.kts

@@ -38,6 +38,8 @@ dependencies {
     implementation("org.apache.httpcomponents:httpclient:4.5.14")
     implementation("org.apache.poi:poi:5.0.0")
     implementation("org.apache.poi:poi-ooxml:5.0.0")
+    implementation("com.google.code.gson:gson:2.8.8")
+
     api ("net.cactusthorn.config:config-core:0.81")
     api ("net.cactusthorn.config:config-yaml:0.81")
     kapt("net.cactusthorn.config:config-compiler:0.81")

src/main/kotlin/com/restapi/controllers/Excel.kt

@@ -1,13 +1,28 @@
 package com.restapi.controllers
+import com.google.gson.Gson
+import com.restapi.domain.*
+import com.restapi.domain.Document
+import com.restapi.domain.PurchaseOrder
+import com.restapi.domain.Quotation
 import org.apache.poi.hssf.usermodel.HSSFSheet
 import org.apache.poi.hssf.usermodel.HSSFWorkbook
 import com.restapi.domain.Session.database
+import com.restapi.domain.Vendor
+import org.apache.poi.ss.usermodel.Cell
+import org.apache.poi.ss.usermodel.CellType
+import org.apache.poi.ss.usermodel.DateUtil
+import org.apache.poi.ss.usermodel.Workbook
+import org.apache.poi.ss.usermodel.WorkbookFactory
+import java.io.File
+import java.io.FileInputStream
 
 
 import java.io.FileOutputStream
-enum class DataType {
+import java.text.SimpleDateFormat
-    QUOTE, PO, VENDOR
+import java.time.LocalDate
-}
+import java.time.ZoneId
+import java.util.*
+
 fun createHeaderRow(cols :List<String>, sh :HSSFSheet) {
     sh.createRow(0).apply {
         cols.forEachIndexed{index, value ->
@@ -15,14 +30,340 @@ fun createHeaderRow(cols :List<String>, sh :HSSFSheet) {
         }
     }
 }
-fun ExportToExcel(cols :List<String>, data :List<List<String>>) {
+fun String.parseDate(format: String): Date? {
+    val locale = Locale.getDefault()
+    return try {
+        SimpleDateFormat(format, locale).parse(this)
+    } catch (e: Exception) {
+        null
+    }
+}
+fun dateFromCellHelper(cell: Cell): LocalDate?{
+    val date = when(cell.cellType){
+        CellType.STRING -> cell.stringCellValue.parseDate("yyyy-MM-dd")
+        CellType.NUMERIC -> {
+            if (DateUtil.isCellDateFormatted(cell)) {
+                cell.getDateCellValue()
+            } else{
+                null
+            }
+        }
+        else -> null
+    }
+    return date?.toInstant()?.atZone(ZoneId.systemDefault())?.toLocalDate()
+}
+fun stringFromCellHelper(cell: Cell): String {
+    val string = when(cell.cellType){
+        CellType.NUMERIC -> cell.numericCellValue.toString()
+        CellType.STRING -> cell.stringCellValue
+        else -> ""
+    }
+    return string
+}
+fun doubleFromCellHelper(cell: Cell): Double {
+    val double = when(cell.cellType){
+        CellType.NUMERIC -> cell.numericCellValue
+        CellType.STRING -> cell.stringCellValue.toDoubleOrNull()
+        else -> 0.0
+    }
+    return double?:0.0
+}
+fun enumFromCellHelper(cell: Cell, enumFor: EnumFor) :String{
+    var string = ""
+    val cellValue = cell.stringCellValue
+    when(enumFor){
+        EnumFor.UOM -> {
+            string = "uom"
+        }
+        EnumFor.DocType -> {
+            string = "doc"
+        }
+    }
+    return string
+}
+fun longIntFromCellHelper(cell : Cell) :Long {
+    val long = when(cell.cellType){
+        CellType.NUMERIC -> cell.numericCellValue.toLong()
+        CellType.STRING -> cell.stringCellValue.toLong()
+        else -> 0
+    }
+    return long
+}
+enum class FileType {
+    QUOTES, POS, VENDORS, PRODS, DOCS
+}
+enum class EnumFor {
+    UOM, DocType
+}
+fun ExportQuotations(quotes :List<Quotation>) {
     val wb = HSSFWorkbook()
     val sh = wb.createSheet()
-    createHeaderRow(cols, sh)
+
-    for((rowCount, row) in data.withIndex()) {
+    val headers : List<String> = listOf("Quotation Number", "Date", "Open Till", "Product Id", "Product Name", "Product Unit Price", "Quantity", "Vendor Name", "Vendor Address", "RFQ Number", "Total AMount", "Terms and Conditions")
-        sh.createRow(rowCount).apply{
+    createHeaderRow(headers, sh)
-            for((colCount, cell) in row.withIndex()) {
+    val totalCols = headers.size
-                createCell(colCount).setCellValue(cell)
+    var rowCnt = 1
+    for(quote in quotes){
+        val prodCnt = quote.products.size
+
+        for (j in 0..prodCnt - 1){
+            val row = sh.createRow(rowCnt++)
+                var i = 0;
+                row.createCell(i++).setCellValue(quote.quoteNum)
+                row.createCell(i++).setCellValue(quote.quoteDate)
+                row.createCell(i++).setCellValue(quote.validTill)
+                //6 would be repeated
+                row.createCell(i++).setCellValue(quote.products[j].productId)
+                row.createCell(i++).setCellValue(quote.products[j].productName)
+                row.createCell(i++).setCellValue(quote.products[j].unitPrice)
+                row.createCell(i++).setCellValue(quote.products[j].quantity)
+
+                row.createCell(i++).setCellValue(quote.vendor?.name)
+                row.createCell(i++).setCellValue(quote.vendor?.address)
+
+                row.createCell(i++).setCellValue(quote.reqForQuoteNum)
+                row.createCell(i++).setCellValue(quote.totalAmount)
+
+                row.createCell(i++).setCellValue(quote.tnc.joinToString(";"))
+        }
+    }
+}
+
+fun ExportVendors(vendors :List<Vendor>){
+    val wb = HSSFWorkbook()
+    val sh = wb.createSheet()
+
+    val headers : List<String> = listOf("Name", "MSME", "GST Number", "Address", "Rating", "Contact Name", "Contact Email", "Contact Mobile")
+    createHeaderRow(headers, sh)
+
+    val totalCols = headers.size
+    var rowCnt = 1
+
+    for (vendor in vendors){
+        val contactCnt = vendor.contacts.size
+        for (j in 0..contactCnt - 1){
+            val row = sh.createRow(rowCnt++)
+            var i = 0
+          row.createCell(i++).setCellValue(vendor.msme)
+          row.createCell(i++).setCellValue(vendor.gstNumber)
+          row.createCell(i++).setCellValue(vendor.address)
+          row.createCell(i++).setCellValue(vendor.rating)
+          row.createCell(i++).setCellValue(vendor.contacts[j].name)
+          row.createCell(i++).setCellValue(vendor.contacts[j].email)
+          row.createCell(i++).setCellValue(vendor.contacts[j].mobile)
+        }
+    }
+}
+
+fun ExportProds(prods :List<Product>){
+    val wb = HSSFWorkbook()
+    val sh = wb.createSheet()
+
+    val headers : List<String> = listOf("Id", "Name", "Description", "HSN Code", "UOM")
+    createHeaderRow(headers, sh)
+
+    val totalCols = headers.size
+    var rowCnt = 1
+
+    for (prod in prods){
+        val row = sh.createRow(rowCnt++)
+        var i = 0
+          row.createCell(i++).setCellValue(prod.id.toString())
+          row.createCell(i++).setCellValue(prod.name)
+          row.createCell(i++).setCellValue(prod.description)
+          row.createCell(i++).setCellValue(prod.hsnCode)
+          row.createCell(i++).setCellValue(prod.uom?.name)
+    }
+}
+fun ExportPos(pos :List<PurchaseOrder>){
+    val wb = HSSFWorkbook()
+    val sh = wb.createSheet()
+
+    val headers : List<String> = listOf("Number", "Date", "Open Till", "Reference Quotation Number", "Vendor Name", "Vendor Address", "Product Id", "Product Name", "Unit Price", "Quantity", "Total Amount", "Terms and Conditions")
+    createHeaderRow(headers, sh)
+
+    val totalCols = headers.size
+    var rowCnt = 1
+    for(po in pos){
+        val prodCnt = po.products.size
+
+        for (j in 0..prodCnt - 1){
+            val row = sh.createRow(rowCnt++)
+                var i = 0
+              row.createCell(i++).setCellValue(po.poNum)
+              row.createCell(i++).setCellValue(po.poDate)
+              row.createCell(i++).setCellValue(po.validTill)
+              row.createCell(i++).setCellValue(po.referenceQuotation)
+              row.createCell(i++).setCellValue(po.vendor?.name)
+              row.createCell(i++).setCellValue(po.vendor?.address)
+
+              //6 would be repeated
+              row.createCell(i++).setCellValue(po.products[j].productId)
+              row.createCell(i++).setCellValue(po.products[j].productName)
+              row.createCell(i++).setCellValue(po.products[j].unitPrice)
+              row.createCell(i++).setCellValue(po.products[j].quantity)
+
+               row.createCell(i++).setCellValue(po.totalAmount)
+               row.createCell(i++).setCellValue(po.tnc.joinToString(";"))
+        }
+    }
+}
+fun main() {
+    ImportFromExcel(FileType.QUOTES, "C:\\Users\\arsalan\\Downloads\\Book.xlsx")
+}
+
+fun ImportFromExcel(fileType: FileType, filePath : String) {
+    val wb = WorkbookFactory.create(File(filePath))
+    val sh = wb.getSheetAt(0)
+
+    when(fileType){
+        FileType.QUOTES -> {
+            //Quote Number, ProductName, Product Quantity, Product Uom, Total Amount, RFQ Number, Quote Date, Valid Till, TNC[], Documents[]
+            val quotesMap : MutableMap<String, Quotation> = mutableMapOf()
+            val quotesList : List<Quotation> = mutableListOf()
+            sh.rowIterator().forEach { row ->
+                if(row == null){
+                    //reached eof
+                    return@forEach
+                }
+                val quoteNum = stringFromCellHelper(row.getCell(0))
+                val quoteDate = dateFromCellHelper(row.getCell(1))
+                val rfqNum = stringFromCellHelper(row.getCell(2))
+                val quoteValidTill = dateFromCellHelper(row.getCell(3))
+                val vendorName = stringFromCellHelper(row.getCell(4))
+                val vendorGstNum = stringFromCellHelper(row.getCell(5))
+                val vendorAddress = stringFromCellHelper(row.getCell(6))
+                val prodName = stringFromCellHelper(row.getCell(7))
+                val prodQuantity = doubleFromCellHelper(row.getCell(8))
+                val prodUnitPrice = doubleFromCellHelper(row.getCell(9))
+                val prodUom = enumFromCellHelper(row.getCell(10), EnumFor.UOM)
+                val totalQuoteAmount = doubleFromCellHelper(row.getCell(11))
+                val prod = POProducts("", prodName, prodUnitPrice, prodQuantity)
+
+                if (quotesMap.containsKey(quoteNum)) {
+                    //duplicated row
+                    quotesMap.get(quoteNum)?.products?.add(prod)
+                }else {
+                    val vendor = Vendor()
+                    vendor.name = vendorName
+                    vendor.address = vendorAddress
+                    vendor.gstNumber = vendorGstNum
+                    val quote = Quotation()
+                    quote.quoteNum = quoteNum
+                    quote.quoteDate = quoteDate
+                    quote.reqForQuoteNum = rfqNum
+                    quote.validTill = quoteValidTill
+                    quote.products = mutableListOf<POProducts>(prod)
+                    quote.vendor = vendor
+                    quote.totalAmount = totalQuoteAmount
+                    quotesMap.put(quoteNum, quote)
+                }
+            }
+            //docs, tncs
+           // println("$quotesMap")
+
+            quotesMap.forEach { (k, v) ->
+                println("$v")
+            }
+        }
+        FileType.POS -> {
+            //poNum, poDate, validTill, refQuoteNum, prodName, prodQuantity, totalAmount, products, vendorName, vendorGst, vendorAddress, tnc[]. docs[]
+            val PoMap : MutableMap<String, PurchaseOrder> = mutableMapOf()
+            sh.rowIterator().forEach { row ->
+                if(row == null) return@forEach
+                val poNum = stringFromCellHelper(row.getCell(0))
+                val poDate = dateFromCellHelper(row.getCell(1))
+                val refQuoteNum = stringFromCellHelper(row.getCell(2))
+                val poValidTill = dateFromCellHelper(row.getCell(3))
+                val prodName = stringFromCellHelper(row.getCell(4))
+                val prodQuantity = doubleFromCellHelper(row.getCell(5))
+                val vendorName = stringFromCellHelper(row.getCell(6))
+                val vendorGstNum = stringFromCellHelper(row.getCell(7))
+                val vendorAddress = stringFromCellHelper(row.getCell(8))
+                val totalPoAmount = doubleFromCellHelper(row.getCell(9))
+                //tncs, docs
+
+                val prod = POProducts("", prodName, 0.0, prodQuantity,"")
+                if(PoMap.containsKey(poNum)){
+                    //repeated row
+                    PoMap.get(poNum)?.products?.add(prod)
+                }else{
+                    val vendor = Vendor()
+                    vendor.name = vendorName
+                    vendor.address = vendorAddress
+                    vendor.gstNumber = vendorGstNum
+                    val po = PurchaseOrder()
+                    po.poNum = poNum
+                    po.poDate = poDate
+                    po.referenceQuotation = refQuoteNum
+                    po.validTill = poValidTill
+                    PoMap.put(poNum, po)
+                }
+            }
+        }
+        FileType.VENDORS -> {
+            sh.rowIterator().forEach { row ->
+                //name, msme, gstNum, addresss, rating, contacts
+                if(row == null) return@forEach
+                val name = stringFromCellHelper(row.getCell(0))
+                val msme = stringFromCellHelper(row.getCell(1))
+                val gstNum = stringFromCellHelper(row.getCell(2))
+                val address = stringFromCellHelper(row.getCell(3))
+                val rating  = doubleFromCellHelper(row.getCell(4))
+
+                //vendor object
+                val vendor = Vendor()
+                vendor.name = name
+                vendor.address = address
+                vendor.msme = msme
+                vendor.gstNumber = gstNum
+                vendor.rating = rating
+            }
+        }
+        FileType.PRODS -> {
+            sh.rowIterator().forEach { row ->
+                if(row == null) return@forEach
+                //id, name, description, hsnCode, uom
+                val prodId = longIntFromCellHelper(row.getCell(0))
+                val prodName = stringFromCellHelper(row.getCell(1))
+                val prodDesc = stringFromCellHelper(row.getCell(2))
+                val prodHsnCode = stringFromCellHelper(row.getCell(3))
+                val prodUom = stringFromCellHelper(row.getCell(4))
+
+                //new prod object
+                val prod = Product()
+                prod.id = prodId
+                prod.name = prodName
+                prod.description = prodDesc
+                prod.hsnCode = prodHsnCode
+                prod.uom = when(prodUom) {
+                    "nos" -> UOM.NOS
+                    "ltr" -> UOM.LTR
+                    "mtr" -> UOM.MTR
+                    else -> UOM.ALL
+                }
+            }
+        }
+        FileType.DOCS -> {
+            sh.rowIterator().forEach { row ->
+                //Document Name, Document Type, RefID, url
+                if (row == null) return@forEach
+                val docName = stringFromCellHelper(row.getCell(0))
+                val docType = stringFromCellHelper(row.getCell(1))
+                val refId = stringFromCellHelper(row.getCell(2))
+                val url = stringFromCellHelper(row.getCell(3))
+
+                //new doc object
+                val doc = Document()
+                doc.name = docName
+                doc.typeOfDoc = when(docType) {
+                    "quote" -> DocType.QUOTE
+                    "po" -> DocType.PO
+                    "invoice" -> DocType.INVOICE
+                    else -> DocType.ALL
+                }
+                doc.refId = refId
+                doc.url = url
             }
         }
     }

src/main/kotlin/com/restapi/domain/models.kt

@@ -12,7 +12,9 @@ import java.time.LocalDateTime
 import javax.persistence.*
 
 data class Comments(val text: String = "", val by: String = "", val at: LocalDateTime = LocalDateTime.now())
-data class POProducts(val productId: String = "", val unitPrice :Double = 0.0, val quantity: Double = 0.0, val description :String = "")
+data class POProducts(val productId: String = "", val productName: String = "", val unitPrice :Double = 0.0, val quantity: Double = 0.0, val description :String = "")
+
+
 enum class ApprovalStatus {
     PENDING, APPROVED, REJECTED
 }
@@ -259,7 +261,7 @@ open class PurchaseOrder :BaseTenantModel() {
     @ManyToOne
     var vendor :Vendor? = null
     var referenceQuotation :String = ""
-    var totalAmount :Int = 0
+    var totalAmount :Double = 0.0
     var poNum: String = ""
     var poDate: LocalDate? = null
     var validTill: LocalDate? = null
@@ -274,7 +276,7 @@ enum class UOM {
 }
 @Entity
 open class Product :BaseTenantModel() {
-    var id: Int? = null
+    var id: Long? = null
     var name :String = ""
     var description :String = ""
     var hsnCode :String = ""
@@ -288,7 +290,7 @@ open class Quotation :BaseTenantModel() {
     var products :MutableList<POProducts> = mutableListOf()
     @ManyToOne
     var vendor :Vendor? = null
-    var totalAmount :Long = 0
+    var totalAmount :Double = 0.0
 
     var reqForQuoteNum: String = ""
     var quoteNum: String = ""
@@ -309,7 +311,8 @@ open class Document :BaseTenantModel() {
     var name :String = ""
     @Enumerated(EnumType.STRING)
     var typeOfDoc :DocType? = null
-    var refId: Long? = null
+    //could be quoteNum, PoNum, InvoiceNum
+    var refId: String? = null
     var description :String = ""
     var url :String = ""
     var docDate :LocalDate? = null