feat: output redered target chart template

action.yml

@@ -43,3 +43,11 @@ inputs:
 runs:
   using: 'node20'
   main: 'dist/index.js'
+
+outputs:
+  changed:
+    description: 'Whether the charts are different'
+  diff:
+    description: 'The diff between the charts'
+  targetTemplate:
+    description: 'The target chart rendered with the target values'

src/action.ts

@@ -54,4 +54,16 @@ export const action = async (
   }
 
   output.setDiff(result.stdout)
+
+  const targetTemplate = await getExecOutput(
+    'helm',
+    ['template', targetChartPath, '--values', targetValues],
+    {
+      ignoreReturnCode: true
+    }
+  )
+
+  if (targetTemplate.exitCode === 0) {
+    output.setTargetTemplate(targetTemplate.stdout)
+  }
 }

src/output.ts

@@ -34,4 +34,11 @@ export class Output {
     this.set('diff', diff)
     this.set('changed', 'true')
   }
+
+  setTargetTemplate(targetTemplate: string): void {
+    if (this.input.asMarkdown) {
+      targetTemplate = `\`\`\`yaml\n${targetTemplate}\n\`\`\``
+    }
+    this.set('targetTemplate', targetTemplate)
+  }
 }