Updated the pdf generator, and improved pdf design

app/src/main/java/in/sminnovations/smiadmin/ui/PDFGenerator.kt

@@ -1,19 +1,23 @@
 package `in`.sminnovations.smiadmin.ui
 
 import android.content.Context
+import android.graphics.Color
+import android.graphics.LinearGradient
+import android.graphics.Paint
+import android.graphics.Path
+import android.graphics.Shader
+import android.graphics.Typeface
 import android.graphics.pdf.PdfDocument
 import android.os.Environment
-import java.io.File
-import java.io.FileOutputStream
-import android.graphics.Paint
-import android.graphics.Typeface
-import android.graphics.Color
 import com.google.firebase.Firebase
 import com.google.firebase.firestore.firestore
 import `in`.sminnovations.smiadmin.data.Employee
 import kotlinx.coroutines.tasks.await
+import java.io.File
+import java.io.FileOutputStream
 import java.text.SimpleDateFormat
-import java.util.*
+import java.util.Calendar
+import java.util.Locale
 
 class PDFGenerator(
     private val context: Context,
@@ -23,16 +27,22 @@ class PDFGenerator(
     private lateinit var currentPage: PdfDocument.Page
     private lateinit var canvas: android.graphics.Canvas
     private var currentY: Float = 0f
-    private val startX = 40f
-    private val pageHeight = 842f // A4 height
-    private val pageWidth = 595f  // A4 width
-    private var pageNumber = 1
 
-    // Define colors
+    // Constants for page layout
-    private val primaryColor = Color.rgb(41, 128, 185)  // Blue
+    private val pageWidth = 595f  // A4 width
-    private val secondaryColor = Color.rgb(44, 62, 80)  // Dark Blue
+    private val pageHeight = 842f // A4 height
-    private val borderColor = Color.rgb(189, 195, 199)  // Light Gray
+    private val margin = 40f
-    private val backgroundColor = Color.rgb(236, 240, 241)  // Very Light Gray
+    private val contentWidth = pageWidth - (2 * margin)
+
+    // Professional color scheme
+    private val primaryColor = Color.rgb(41, 128, 185)    // Professional blue
+    private val secondaryColor = Color.rgb(44, 62, 80)    // Dark blue
+    private val accentColor = Color.rgb(230, 126, 34)     // Orange for highlights
+    private val backgroundColor = Color.rgb(236, 240, 241) // Light gray
+    private val borderColor = Color.rgb(189, 195, 199)    // Medium gray
+    private val textColor = Color.rgb(52, 73, 94)         // Dark gray for text
+
+    private var pageNumber = 1
 
     suspend fun generateAttendanceReport(
         employees: List<Employee>,
@@ -42,35 +52,43 @@ class PDFGenerator(
         document = PdfDocument()
         createNewPage()
 
-        // Setup paints
+        // Create paint objects
-        val headerPaint = Paint().apply {
+        val titlePaint = Paint().apply {
-            textSize = 28f
+            textSize = 32f
-            textAlign = Paint.Align.CENTER
+            typeface = Typeface.create("sans-serif-light", Typeface.BOLD)
-            typeface = Typeface.create(Typeface.DEFAULT, Typeface.BOLD)
             color = primaryColor
+            textAlign = Paint.Align.CENTER
         }
 
-        val subHeaderPaint = Paint().apply {
+        val subtitlePaint = Paint().apply {
-            textSize = 20f
+            textSize = 24f
-            textAlign = Paint.Align.CENTER
+            typeface = Typeface.create("sans-serif-light", Typeface.NORMAL)
             color = secondaryColor
+            textAlign = Paint.Align.CENTER
         }
 
         val tableHeaderPaint = Paint().apply {
             textSize = 14f
-            textAlign = Paint.Align.LEFT
+            typeface = Typeface.create("sans-serif-medium", Typeface.BOLD)
-            typeface = Typeface.create(Typeface.DEFAULT, Typeface.BOLD)
             color = Color.WHITE
         }
 
-        val tablePaint = Paint().apply {
+        val regularPaint = Paint().apply {
             textSize = 12f
-            textAlign = Paint.Align.LEFT
+            typeface = Typeface.create("sans-serif", Typeface.NORMAL)
-            color = secondaryColor
+            color = textColor
         }
 
-        // Draw headers and table
+        val highlightPaint = Paint().apply {
-        drawPageHeaders(headerPaint, subHeaderPaint, selectedYear, selectedMonth)
+            textSize = 12f
+            typeface = Typeface.create("sans-serif-medium", Typeface.BOLD)
+            color = accentColor
+        }
+
+        // Draw report header
+        drawReportHeader(selectedYear, selectedMonth, titlePaint, subtitlePaint)
+
+        // Draw table headers
         drawTableHeaders(tableHeaderPaint)
 
         // Process each employee
@@ -78,7 +96,6 @@ class PDFGenerator(
             if (currentY > pageHeight - 100) {
                 finishCurrentPage()
                 createNewPage()
-                drawPageHeaders(headerPaint, subHeaderPaint, selectedYear, selectedMonth)
                 drawTableHeaders(tableHeaderPaint)
             }
 
@@ -98,58 +115,166 @@ class PDFGenerator(
                 }
                 .sorted()
 
-            // Draw row background
+            drawEmployeeRow(employee, presentDates, regularPaint, highlightPaint)
-            val rowPaint = Paint().apply {
-                color = if ((employees.indexOf(employee) % 2) == 0) {
-                    backgroundColor
-                } else {
-                    Color.WHITE
-                }
-            }
-
-            val rowHeight = 60f
-            canvas.drawRect(startX, currentY, pageWidth - startX, currentY + rowHeight, rowPaint)
-
-            // Draw employee details
-            val nameY = currentY + 25f
-            canvas.drawText(employee.Name, startX + 10f, nameY, tablePaint)
-            canvas.drawText(
-                "${presentDates.size} days",
-                startX + 190f,
-                nameY,
-                tablePaint
-            )
-
-            // Format dates in groups of 5
-            val datesText = presentDates.chunked(5).joinToString("\n") { chunk ->
-                chunk.joinToString(", ") { day -> String.format("%02d", day) }
-            }
-
-            // Draw dates in multiple lines if needed
-            var dateY = nameY
-            datesText.split("\n").forEach { line ->
-                canvas.drawText(line, startX + 290f, dateY, tablePaint)
-                dateY += 15f
-            }
-
-            // Draw row borders
-            val borderPaint = Paint().apply {
-                style = Paint.Style.STROKE
-                strokeWidth = 0.5f
-                color = borderColor
-            }
-            canvas.drawLine(
-                startX, currentY + rowHeight,
-                pageWidth - startX, currentY + rowHeight,
-                borderPaint
-            )
-
-            currentY += rowHeight
         }
 
+        // Add footer with page numbers
+        drawFooter(regularPaint)
+
         // Finish and save document
         finishCurrentPage()
+        return saveDocument(selectedYear, selectedMonth)
+    }
 
+    private fun drawReportHeader(
+        selectedYear: Int,
+        selectedMonth: Int,
+        titlePaint: Paint,
+        subtitlePaint: Paint
+    ) {
+        // Draw decorative header background
+        val headerPath = Path().apply {
+            moveTo(0f, 0f)
+            lineTo(pageWidth, 0f)
+            lineTo(pageWidth, 120f)
+            quadTo(pageWidth/2, 140f, 0f, 120f)
+            close()
+        }
+
+        canvas.drawPath(headerPath, Paint().apply {
+            color = primaryColor
+            alpha = 20
+        })
+
+        // Draw company name
+        canvas.drawText(companyName, pageWidth/2, 70f, titlePaint)
+
+        // Draw report title
+        val monthName = SimpleDateFormat("MMMM", Locale.getDefault())
+            .format(Calendar.getInstance().apply {
+                set(Calendar.MONTH, selectedMonth - 1)
+            }.time)
+
+        canvas.drawText(
+            "Monthly Attendance Summary",
+            pageWidth/2,
+            105f,
+            subtitlePaint
+        )
+
+        canvas.drawText(
+            "$monthName $selectedYear",
+            pageWidth/2,
+            135f,
+            subtitlePaint
+        )
+
+        currentY = 180f
+    }
+
+    private fun drawTableHeaders(headerPaint: Paint) {
+        val headerHeight = 45f
+
+        // Create gradient for header background
+        val gradient = LinearGradient(
+            margin, currentY,
+            margin, currentY + headerHeight,
+            primaryColor,
+            secondaryColor,
+            Shader.TileMode.CLAMP
+        )
+
+        // Draw header background with gradient
+        canvas.drawRoundRect(
+            margin, currentY,
+            pageWidth - margin,
+            currentY + headerHeight,
+            8f, 8f,
+            Paint().apply { shader = gradient }
+        )
+
+        // Draw column headers
+        var xPos = margin + 15f
+        canvas.drawText("Employee Name", xPos, currentY + 30f, headerPaint)
+
+        xPos += 180f
+        canvas.drawText("Days Present", xPos, currentY + 30f, headerPaint)
+
+        xPos += 100f
+        canvas.drawText("Attendance Dates", xPos, currentY + 30f, headerPaint)
+
+        currentY += headerHeight + 5f
+    }
+
+    private fun drawEmployeeRow(
+        employee: Employee,
+        presentDates: List<Int>,
+        regularPaint: Paint,
+        highlightPaint: Paint
+    ) {
+        val rowHeight = 60f
+
+        // Draw row background
+        canvas.drawRoundRect(
+            margin, currentY,
+            pageWidth - margin,
+            currentY + rowHeight,
+            4f, 4f,
+            Paint().apply {
+                color = backgroundColor
+            }
+        )
+
+        // Draw employee name
+        canvas.drawText(
+            employee.Name,
+            margin + 15f,
+            currentY + 35f,
+            regularPaint
+        )
+
+        // Draw days present
+        canvas.drawText(
+            "${presentDates.size} days",
+            margin + 195f,
+            currentY + 35f,
+            highlightPaint
+        )
+
+        // Draw attendance dates
+        val datesText = presentDates.chunked(5)
+            .joinToString("\n") { chunk ->
+                chunk.joinToString(", ") {
+                    String.format("%02d", it)
+                }
+            }
+
+        var dateY = currentY + 25f
+        datesText.split("\n").forEach { line ->
+            canvas.drawText(
+                line,
+                margin + 295f,
+                dateY,
+                regularPaint
+            )
+            dateY += 15f
+        }
+
+        currentY += rowHeight + 5f
+    }
+
+    private fun drawFooter(paint: Paint) {
+        paint.textAlign = Paint.Align.CENTER
+        paint.textSize = 10f
+        canvas.drawText(
+            "Page $pageNumber",
+            pageWidth/2,
+            pageHeight - margin/2,
+            paint
+        )
+    }
+
+    private fun saveDocument(selectedYear: Int, selectedMonth: Int): File {
         val fileName = "Attendance_Summary_${selectedYear}_${selectedMonth}.pdf"
         val file = File(
             Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
@@ -165,58 +290,18 @@ class PDFGenerator(
     }
 
     private fun createNewPage() {
-        val pageInfo = PdfDocument.PageInfo.Builder(pageWidth.toInt(), pageHeight.toInt(), pageNumber++).create()
+        val pageInfo = PdfDocument.PageInfo.Builder(
+            pageWidth.toInt(),
+            pageHeight.toInt(),
+            pageNumber++
+        ).create()
+
         currentPage = document.startPage(pageInfo)
         canvas = currentPage.canvas
-        currentY = 120f
+        currentY = margin
     }
 
     private fun finishCurrentPage() {
         document.finishPage(currentPage)
     }
-
-    private fun drawPageHeaders(
-        headerPaint: Paint,
-        subHeaderPaint: Paint,
-        selectedYear: Int,
-        selectedMonth: Int
-    ) {
-        // Draw company logo background
-        val logoBgPaint = Paint().apply {
-            color = primaryColor
-            alpha = 30
-        }
-        canvas.drawCircle(pageWidth / 2f, 45f, 100f, logoBgPaint)
-
-        // Draw company name
-        canvas.drawText(companyName, pageWidth / 2f, 60f, headerPaint)
-
-        // Draw report title
-        val monthName = SimpleDateFormat("MMMM", Locale.getDefault())
-            .format(Calendar.getInstance().apply {
-                set(Calendar.MONTH, selectedMonth - 1)
-            }.time)
-
-        val reportTitle = "Monthly Attendance Summary - $monthName $selectedYear"
-        canvas.drawText(reportTitle, pageWidth / 2f, 95f, subHeaderPaint)
-        currentY = 140f
-    }
-
-    private fun drawTableHeaders(headerPaint: Paint) {
-        // Draw header background
-        val headerBgPaint = Paint().apply {
-            color = primaryColor
-        }
-
-        val headerHeight = 40f
-        canvas.drawRect(startX, currentY, pageWidth - startX, currentY + headerHeight, headerBgPaint)
-
-        // Draw column headers
-        val textY = currentY + 25f
-        canvas.drawText("Employee Name", startX + 10f, textY, headerPaint)
-        canvas.drawText("Present Days", startX + 190f, textY, headerPaint)
-        canvas.drawText("Dates Present", startX + 290f, textY, headerPaint)
-
-        currentY += headerHeight
-    }
 }