feat(idx) add auto idx

backend/src/markdown/meta.rs

@@ -0,0 +1,51 @@
+use std::collections::HashMap;
+
+use regex::Regex;
+
+pub fn parse_meta(md_content: &str) -> HashMap<String, String> {
+    let mut fields: HashMap<String, String> = HashMap::new();
+    let match_regex = Regex::new(r"(?s)---\n(.*\n)---\n").unwrap();
+    if let Some(front_matter) = match_regex.captures(md_content) {
+        let fm_content = front_matter.get(1).unwrap().as_str();
+        for line in fm_content.lines() {
+            if let Some((k, v)) = extract_kv(line) {
+                fields.insert(k, v);
+            }
+        }
+    }
+    fields
+}
+
+fn extract_kv(line: &str) -> Option<(String, String)> {
+    let split: Vec<&str> = line.splitn(2, ':').map(|s| s.trim()).collect();
+    if split.len() == 2 {
+        let key = split[0].to_string();
+        let value = split[1].to_string();
+        Some((key, value))
+    } else {
+        None
+    }
+}
+
+#[cfg(test)]
+mod meta_test {
+    use std::error::Error;
+
+    use crate::markdown::meta::parse_meta;
+
+    #[test]
+    fn test_parse_meta_front_matter() -> Result<(), Box<dyn Error>> {
+        let parsed_meta = parse_meta(
+            r##"
+---
+title: Hello World!
+tags: [ "test", "hello_world" ]
+---
+            "##
+        );
+        dbg!(&parsed_meta);
+        assert_eq!(parsed_meta.get("title"), Some(&"Hello World!".to_string()));
+        assert_eq!(parsed_meta.get("tags"), Some(&r#"[ "test", "hello_world" ]"#.to_string()));
+        Ok(())
+    }
+}

backend/src/markdown/mod.rs

@@ -0,0 +1 @@
+pub mod meta;