Add simple mustache mockup.

build.gradle.kts

@@ -14,6 +14,9 @@ dependencies {
   implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.3")
   implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor:1.7.3")
   implementation("com.itextpdf:itext7-core:7.2.6")
+  implementation("com.itextpdf:html2pdf:5.0.4")
+  implementation("org.springframework.boot:spring-boot-starter-mustache")
+  implementation("com.github.spullara.mustache.java:compiler:0.9.5")
   implementation("org.apache.commons:commons-lang3:3.12.0")
   implementation("com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.14.2")
   implementation("io.sentry:sentry-spring-boot-starter-jakarta:6.34.0")

src/main/kotlin/uk/gov/justice/digital/hmpps/hmppssubjectaccessrequestworker/utils/Mustache.kt

@@ -0,0 +1,65 @@
+package uk.gov.justice.digital.hmpps.hmppssubjectaccessrequestworker.utils
+import com.github.mustachejava.DefaultMustacheFactory
+import com.github.mustachejava.Mustache
+import com.github.mustachejava.MustacheFactory
+import com.itextpdf.html2pdf.HtmlConverter
+import com.itextpdf.kernel.pdf.PdfDocument
+import com.itextpdf.kernel.pdf.PdfWriter
+import com.itextpdf.layout.Document
+import com.itextpdf.layout.element.IBlockElement
+import com.itextpdf.layout.element.Paragraph
+import java.io.FileInputStream
+import java.io.FileOutputStream
+import java.io.PrintWriter
+
+class Mustache {
+
+  fun compile(file: String): Int {
+    val mf: MustacheFactory = DefaultMustacheFactory()
+    val m: Mustache? = mf.compile(file)
+    println(m)
+    return 0
+  }
+
+  fun execute(dataObject: Any): Int {
+    val mf = DefaultMustacheFactory()
+    val mustache = mf.compile(mf.getReader("template.mustache"), "hello")
+    mustache.execute(PrintWriter("test.html"), dataObject).flush()
+    return 0
+  }
+
+  fun convertToPdf(htmlFileName: String, pdfFileName: String): String {
+    val writer = PdfWriter(FileOutputStream("dummy.pdf"))
+    val pdfDocument = PdfDocument(writer)
+    val document = Document(pdfDocument)
+    document.add(Paragraph("This is an example title").setFontSize(16f).setBold())
+    document.add(Paragraph(""))
+    document.add(Paragraph("This is an example text").setFontSize(10f))
+    document.add(Paragraph(""))
+    val elements = HtmlConverter.convertToElements(FileInputStream(htmlFileName))
+    for (element in elements) {
+      document.add(element as IBlockElement)
+    }
+    document.close()
+    return pdfFileName
+  }
+}
+
+data class Item(val title: String, val createdOn: String, val text: String)
+data class Keyworker(
+  val offenderKeyworkerId: String?,
+  val offenderNo: String?,
+  val staffId: String?,
+  val assignedDateTime: String?,
+  val active: String?,
+  val allocationReason: String?,
+  val allocationType: String?,
+  val userId: String?,
+  val prisonId: String?,
+  val expiryDateTime: String?,
+  val deallocationReason: String?,
+  val creationDateTime: String?,
+  val createUserId: String?,
+  val modifyDateTime: String?,
+  val modifyUserId: String?,
+)

src/main/resources/template.mustache

@@ -0,0 +1,24 @@
+<style>
+  body
+  {
+    font-family: 'Helvetica', 'Arial', sans-serif;
+    font-size: 12pt;
+  }
+  table {
+    border-collapse: collapse;
+    border-style: hidden;
+    width: 50%
+  }
+  table td, table th {
+    border: 1px solid black;
+  }
+</style>
+
+{{#.}}
+  <h2>Keyworker</h2>
+  <table>
+    <tr><td>Offender Keyworker ID</td><td>{{offenderKeyworkerId}}</td></tr>
+    <tr><td>Offender Number</td><td>{{offenderNo}}</td></tr>
+    <tr><td>User ID</td><td>{{userId}}</td></tr>
+  </table>
+{{/.}}

src/test/kotlin/uk/gov/justice/digital/hmpps/hmppssubjectaccessrequestworker/utils/MustacheTest.kt

@@ -0,0 +1,40 @@
+package uk.gov.justice.digital.hmpps.hmppssubjectaccessrequestworker.utils
+
+import org.assertj.core.api.Assertions
+import org.json.JSONArray
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+import uk.gov.justice.digital.hmpps.hmppssubjectaccessrequestworker.integration.IntegrationTestBase
+
+class MustacheTest : IntegrationTestBase() {
+
+  @Test
+  fun `Mustache compiles and returns 0`() {
+    val response = Mustache().compile("template.mustache")
+    Assertions.assertThat(response).isEqualTo(0)
+    assertThrows<Exception> { Mustache().compile("notemplate.mustache") }
+  }
+
+  @Test
+  fun `Template executes`() {
+    val testItem = Item("Item 1", "02/02/02", "This is the first item.")
+    val response = Mustache().execute(testItem)
+    Assertions.assertThat(response).isEqualTo(0)
+  }
+
+  @Test
+  fun `keyworker executes`() {
+    val dummyData = """[{"offenderKeyworkerId":23264,"offenderNo":"A8610DY","staffId":485588,"assignedDateTime":"2022-07-06T14:42:50.621973","active":true,"allocationReason":"AUTO","allocationType":"A","userId":"TWRIGHT","prisonId":"MDI","expiryDateTime":null,"deallocationReason":null,"creationDateTime":"2022-07-06T14:42:50.625039","createUserId":"TWRIGHT","modifyDateTime":"2022-07-06T14:42:50.625039","modifyUserId":"TWRIGHT"},{"offenderKeyworkerId":23264,"offenderNo":"A8610DY","staffId":485588,"assignedDateTime":"2022-07-06T14:42:50.621973","active":true,"allocationReason":"AUTO","allocationType":"A","userId":"TWRIGHT","prisonId":"MDI","expiryDateTime":null,"deallocationReason":null,"creationDateTime":"2022-07-06T14:42:50.625039","createUserId":"TWRIGHT","modifyDateTime":"2022-07-06T14:42:50.625039","modifyUserId":"TWRIGHT"}]""".trimMargin()
+    val data = JSONArray(dummyData).toList()
+    val response = Mustache().execute(data)
+    Assertions.assertThat(response).isEqualTo(0)
+  }
+
+  @Test
+  fun `convertToPdf returns filename`() {
+    val htmlTestFileName = "test.html"
+    val pdfTestFileName = "test.pdf"
+    val response = Mustache().convertToPdf(htmlTestFileName, pdfTestFileName)
+    Assertions.assertThat(response).isEqualTo(pdfTestFileName)
+  }
+}

test.html

@@ -0,0 +1,28 @@
+<style>
+  body
+  {
+    font-family: 'Helvetica', 'Arial', sans-serif;
+    font-size: 12pt;
+  }
+  table {
+    border-collapse: collapse;
+    border-style: hidden;
+    width: 50%
+  }
+  table td, table th {
+    border: 1px solid black;
+  }
+</style>
+
+  <h2>Keyworker</h2>
+  <table>
+    <tr><td>Offender Keyworker ID</td><td>23264</td></tr>
+    <tr><td>Offender Number</td><td>A8610DY</td></tr>
+    <tr><td>User ID</td><td>TWRIGHT</td></tr>
+  </table>
+  <h2>Keyworker</h2>
+  <table>
+    <tr><td>Offender Keyworker ID</td><td>23264</td></tr>
+    <tr><td>Offender Number</td><td>A8610DY</td></tr>
+    <tr><td>User ID</td><td>TWRIGHT</td></tr>
+  </table>

test.mustache

@@ -0,0 +1,13 @@
+<h2></h2>
+<small>Created on </small>
+<p></p>
+
+{{#.}}
+  <h1>Keyworker</h1>
+  <table>
+    <tr>
+      <td>Offender Keyworker ID 23264</td>
+      <td>Offender Number A8610DY</td>
+    </tr>
+  </table>
+{{/.}}