feat: basic metadata extractor

1 files changed, 37 insertions, 0 deletions

diff --git a/internal/frontmatter/parser.go b/internal/frontmatter/parser.go
new file mode 100644
index 0000000..6cc3ee8
--- /dev/null
+++ b/internal/frontmatter/parser.go
@@ -0,0 +1,37 @@
+package frontmatter
+
+import (
+	"fmt"
+	"regexp"
+	"time"
+
+	"gopkg.in/yaml.v3"
+)
+
+type Metadata struct {
+	Title            string    `yaml:"title"`
+	ShortDescription string    `yaml:"shortDescription"`
+	ActionDate       string    `yaml:"actionDate"`
+	PublishedTime    time.Time `yaml:"publishedTime"`
+	Thumbnail        string    `yaml:"thumbnail"`
+	Tags             []string  `yaml:"tags"`
+}
+
+func ParseFrontmatter(content []byte) (metadata *Metadata, markdown []byte, err error) {
+	frontmatterRegex := regexp.MustCompile(`^---\s*\r?\n([\s\S]*?)\r?\n---\s*\r?\n([\s\S]*)$`)
+	matches := frontmatterRegex.FindSubmatch(content)
+
+	if len(matches) != 3 {
+		return nil, content, nil
+	}
+
+	yamlContent := matches[1]
+	markdownContent := matches[2]
+
+	metadata = &Metadata{}
+	if err := yaml.Unmarshal([]byte(yamlContent), &metadata); err != nil {
+		return nil, nil, fmt.Errorf("failed to parse YAML frontmatter: %w", err)
+	}
+
+	return metadata, markdownContent, nil
+}