From 5ff5db6770a4cd7f506121287070fb342de62e79 Mon Sep 17 00:00:00 2001
From: Anhgelus Morhtuuzh <william@herges.fr>
Date: Sun, 21 Dec 2025 14:16:03 +0100
Subject: feat(markdown): option to render poem

---
 markdown/ast_external.go       |  6 +++++-
 markdown/ast_paragraph.go      | 13 +++++++++++--
 markdown/ast_paragraph_test.go | 14 +++++++++++---
 markdown/ast_test.go           | 18 +++++++++++++++++-
 markdown/eval.go               |  1 +
 5 files changed, 45 insertions(+), 7 deletions(-)

diff --git a/markdown/ast_external.go b/markdown/ast_external.go
index 7223a9b..be63131 100644
--- a/markdown/ast_external.go
+++ b/markdown/ast_external.go
@@ -26,7 +26,11 @@ func (a *astLink) Eval(opt *Option) (template.HTML, *ParseError) {
 	}
 	rr := opt.RenderLink(string(content), string(href))
 	if a.addSpace {
-		return " " + rr, nil
+		s, err := astBreak{}.Eval(opt)
+		if err != nil {
+			return "", err
+		}
+		return s + rr, nil
 	}
 	return rr, nil
 }
diff --git a/markdown/ast_paragraph.go b/markdown/ast_paragraph.go
index 70d3414..30fd4a1 100644
--- a/markdown/ast_paragraph.go
+++ b/markdown/ast_paragraph.go
@@ -34,6 +34,15 @@ func (a *astParagraph) Eval(opt *Option) (template.HTML, *ParseError) {
 	).Render(), nil
 }
 
+type astBreak struct{}
+
+func (a astBreak) Eval(opt *Option) (template.HTML, *ParseError) {
+	if opt.Poem {
+		return dom.NewVoidElement("br").Render(), nil
+	}
+	return " ", nil
+}
+
 func paragraph(lxs *lexers, oneLine bool) (*astParagraph, *ParseError) {
 	tree := new(astParagraph)
 	tree.oneLine = oneLine
@@ -46,11 +55,11 @@ func paragraph(lxs *lexers, oneLine bool) (*astParagraph, *ParseError) {
 		s := lxs.Current().Value
 		// replace line break by space
 		if n > 0 && len(tree.content) != 0 {
-			s = " " + s
+			tree.content = append(tree.content, astBreak{})
 		}
 		tree.content = append(tree.content, conv(s))
 	}
-	lxs.current-- // because we do not use it before the next
+	lxs.Before() // because we do not use it before the next
 	for lxs.Next() && n < maxBreak {
 		switch lxs.Current().Type {
 		case lexerBreak:
diff --git a/markdown/ast_paragraph_test.go b/markdown/ast_paragraph_test.go
index ab3ab6c..c18dfc7 100644
--- a/markdown/ast_paragraph_test.go
+++ b/markdown/ast_paragraph_test.go
@@ -7,10 +7,18 @@ func TestParagraph(t *testing.T) {
 		t.Run("simple", test("bonsoir", `<p>bonsoir</p>`))
 	})
 	t.Run("replacer", func(t *testing.T) {
-		opt := &Option{
-			Replaces: map[rune]string{'~': "&thinsp;"},
-		}
+		opt := &Option{Replaces: map[rune]string{'~': "&thinsp;"}}
 		t.Run("empty", testWithOptions(opt, "bonsoir", `<p>bonsoir</p>`))
 		t.Run("simple", testWithOptions(opt, "bonsoir~!", `<p>bonsoir&thinsp;!</p>`))
 	})
+	t.Run("poem", func(t *testing.T) {
+		opt := &Option{Poem: true}
+		t.Run("simple", testWithOptions(opt, "bonsoir", `<p>bonsoir</p>`))
+		t.Run("one_break", testWithOptions(opt, `bonsoir
+world`, `<p>bonsoir<br />world</p>`))
+		t.Run("mult_break", testWithOptions(opt, `bonsoir
+world
+
+new line`, `<p>bonsoir<br />world</p><p>new line</p>`))
+	})
 }
diff --git a/markdown/ast_test.go b/markdown/ast_test.go
index ed2ef87..c0c7fb3 100644
--- a/markdown/ast_test.go
+++ b/markdown/ast_test.go
@@ -41,7 +41,22 @@ var parsed = `
 <ul><li>hehe</li></ul>
 <figure>
 <img alt="Ceci est ma pfp :3" src="https://cdn.anhgelus.world/pfp.jpg" />
-<figcaption> <a href="https://now.anhgelus.world/" target="_blank" rel="noreferer">Ma pfp</a> hehe :D Elle est <b>magnifique</b>, n&#39;est-ce pas ?</figcaption>
+<figcaption><a href="https://now.anhgelus.world/" target="_blank" rel="noreferer">Ma pfp</a> hehe :D Elle est <b>magnifique</b>, n&#39;est-ce pas ?</figcaption>
+</figure>
+`
+
+var parsedPoem = `
+<h1>Je suis un titre</h1>
+<p>Avec une description classique,<br />sur plusieurs lignes !</p>
+<p>Et je peux mettre du texte en <b>gras</b>,<br />en <em>italique</em> et les <b><em>deux en même temps</em></b> !</p>
+<div class="quote"><blockquote>Je suis une magnifique citation sur plusieurs lignes</blockquote><p>avec une source</p></div>
+<div class="quote"><blockquote>qui recommence après !</blockquote><p>qui a elle aussi une source :D</p></div>
+<ul><li>Ceci est une liste</li><li>pas ordonnée</li></ul>
+<ol><li>et maintenant</li><li>elle l&#39;est</li></ol>
+<ul><li>hehe</li></ul>
+<figure>
+<img alt="Ceci est ma pfp :3" src="https://cdn.anhgelus.world/pfp.jpg" />
+<figcaption><a href="https://now.anhgelus.world/" target="_blank" rel="noreferer">Ma pfp</a> hehe :D Elle est <b>magnifique</b>, n&#39;est-ce pas ?</figcaption>
 </figure>
 `
 
@@ -65,5 +80,6 @@ func testWithOptions(opt *Option, input, expected string) func(*testing.T) {
 func TestAst(t *testing.T) {
 	t.Run("ast", func(t *testing.T) {
 		t.Run("complete", test(raw, strings.ReplaceAll(parsed, "\n", "")))
+		t.Run("poem", testWithOptions(&Option{Poem: true}, raw, strings.ReplaceAll(parsedPoem, "\n", "")))
 	})
 }
diff --git a/markdown/eval.go b/markdown/eval.go
index ae4bafc..9b0e099 100644
--- a/markdown/eval.go
+++ b/markdown/eval.go
@@ -8,6 +8,7 @@ type Option struct {
 	ImageSource func(source string) string
 	RenderLink  func(content, href string) template.HTML
 	Replaces    map[rune]string
+	Poem        bool
 }
 
 func Parse(s string, opt *Option) (template.HTML, *ParseError) {
-- 
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