feat: image and link parser (#1744)

* feat: image and link parser

* chore: update

plugin/gomark/parser/link_test.go

@@ -0,0 +1,60 @@
+package parser
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/usememos/memos/plugin/gomark/parser/tokenizer"
+)
+
+func TestLinkParser(t *testing.T) {
+	tests := []struct {
+		text string
+		link *LinkParser
+	}{
+		{
+			text: "[](https://example.com)",
+			link: &LinkParser{
+				ContentTokens: []*tokenizer.Token{
+					{
+						Type:  tokenizer.Text,
+						Value: "https://example.com",
+					},
+				},
+				URL: "https://example.com",
+			},
+		},
+		{
+			text: "! [](https://example.com)",
+			link: nil,
+		},
+		{
+			text: "[alte]( htt ps :/ /example.com)",
+			link: nil,
+		},
+		{
+			text: "[hello world](https://example.com)",
+			link: &LinkParser{
+				ContentTokens: []*tokenizer.Token{
+					{
+						Type:  tokenizer.Text,
+						Value: "hello",
+					},
+					{
+						Type:  tokenizer.Space,
+						Value: " ",
+					},
+					{
+						Type:  tokenizer.Text,
+						Value: "world",
+					},
+				},
+				URL: "https://example.com",
+			},
+		},
+	}
+	for _, test := range tests {
+		tokens := tokenizer.Tokenize(test.text)
+		require.Equal(t, test.link, NewLinkParser().Match(tokens))
+	}
+}