WIP

mtojek · mtojek · commit d5ecf161b7d7 · 2024-02-01T11:28:01.000+01:00
diff --git a/coderd/parameter/renderer.go b/coderd/parameter/renderer.go
@@ -1,6 +1,7 @@
 package parameter
 
 import (
+	"regexp"
 	"strings"
 
 	"github.com/charmbracelet/glamour"
@@ -95,3 +96,33 @@ func Plaintext(markdown string) (string, error) {
 
 	return strings.TrimSpace(output), nil
 }
+
+var (
+	reBold          = regexp.MustCompile(`\*\*([^*]+)\*\*`)
+	reItalic        = regexp.MustCompile(`\*([^*]+)\*`)
+	reStrikethrough = regexp.MustCompile(`~~([^~]+)~~`)
+	reLink          = regexp.MustCompile(`\[([^]]+)\]\(([^)]+)\)`)
+)
+
+func HTML(markdown string) string {
+	draft := replaceBold(markdown) // bold regexp must go before italic - ** vs. *
+	draft = replaceItalic(draft)
+	draft = replaceStrikethrough(draft)
+	return replaceLinks(draft)
+}
+
+func replaceItalic(markdown string) string {
+	return reItalic.ReplaceAllString(markdown, "<i>$1</i>")
+}
+
+func replaceBold(markdown string) string {
+	return reBold.ReplaceAllString(markdown, "<strong>$1</strong>")
+}
+
+func replaceStrikethrough(markdown string) string {
+	return reStrikethrough.ReplaceAllString(markdown, "<del>$1</del>")
+}
+
+func replaceLinks(markdown string) string {
+	return reLink.ReplaceAllString(markdown, `<a href="$2">$1</a>`)
+}
diff --git a/coderd/parameter/renderer_test.go b/coderd/parameter/renderer_test.go
@@ -47,3 +47,25 @@ __This is bold text.__
 		require.Equal(t, nothingChanges, stripped)
 	})
 }
+
+func TestHTML(t *testing.T) {
+	t.Parallel()
+	t.Run("Simple", func(t *testing.T) {
+		t.Parallel()
+
+		mdDescription := `**Coder** is in *early access* mode. To ~~register~~ request access, fill out [this form](https://internal.example.com). ***Thank you!***`
+		expected := `<strong>Coder</strong> is in <i>early access</i> mode. To <del>register</del> request access, fill out <a href="https://internal.example.com">this form</a>. <i><strong>Thank you!</strong></i>`
+
+		rendered := parameter.HTML(mdDescription)
+		require.Equal(t, expected, rendered)
+	})
+
+	t.Run("Nothing changes", func(t *testing.T) {
+		t.Parallel()
+
+		nothingChanges := "This is a simple description, so nothing changes."
+
+		rendered := parameter.HTML(nothingChanges)
+		require.Equal(t, nothingChanges, rendered)
+	})
+}
