v1.1.0 - View mode, daily notes, tag management, math support, and more

src-tauri/src/vault/frontmatter.rs

@@ -1,9 +1,8 @@
 use crate::types::NoteMeta;
-use chrono::Utc;
+use chrono::{NaiveDate, NaiveDateTime, Utc};
 use gray_matter::engine::YAML;
 use gray_matter::Matter;
 use serde::{Deserialize, Serialize};
-use uuid::Uuid;
 
 #[derive(Debug, Serialize, Deserialize, Default)]
 struct RawFrontmatter {
@@ -15,6 +14,32 @@ struct RawFrontmatter {
     modified: Option<String>,
 }
 
+/// Try to parse a date string in multiple common formats.
+fn parse_date_flexible(s: &str) -> Option<chrono::DateTime<Utc>> {
+    let s = s.trim();
+    // RFC 3339 / ISO 8601 with timezone (e.g. 2024-01-15T10:30:00+00:00)
+    if let Ok(dt) = s.parse::<chrono::DateTime<Utc>>() {
+        return Some(dt);
+    }
+    // Try parsing as DateTime with fixed offset then convert
+    if let Ok(dt) = chrono::DateTime::parse_from_rfc3339(s) {
+        return Some(dt.with_timezone(&Utc));
+    }
+    // YYYY-MM-DD HH:MM:SS (no timezone)
+    if let Ok(ndt) = NaiveDateTime::parse_from_str(s, "%Y-%m-%d %H:%M:%S") {
+        return Some(ndt.and_utc());
+    }
+    // YYYY-MM-DDTHH:MM:SS (no timezone, with T separator)
+    if let Ok(ndt) = NaiveDateTime::parse_from_str(s, "%Y-%m-%dT%H:%M:%S") {
+        return Some(ndt.and_utc());
+    }
+    // YYYY-MM-DD (date only)
+    if let Ok(nd) = NaiveDate::parse_from_str(s, "%Y-%m-%d") {
+        return nd.and_hms_opt(0, 0, 0).map(|ndt| ndt.and_utc());
+    }
+    None
+}
+
 pub fn parse_note(raw: &str, filename: &str) -> (NoteMeta, String) {
     let matter = Matter::<YAML>::new();
     let result = matter.parse(raw);
@@ -28,15 +53,16 @@ pub fn parse_note(raw: &str, filename: &str) -> (NoteMeta, String) {
 
     let created = fm
         .created
-        .and_then(|s| s.parse().ok())
+        .and_then(|s| parse_date_flexible(&s))
         .unwrap_or_else(Utc::now);
 
     let modified = fm
         .modified
-        .and_then(|s| s.parse().ok())
+        .and_then(|s| parse_date_flexible(&s))
         .unwrap_or_else(Utc::now);
 
-    let id = fm.id.unwrap_or_else(|| Uuid::new_v4().to_string());
+    // Don't generate UUID on read — empty string signals "no ID yet"
+    let id = fm.id.unwrap_or_default();
 
     let meta = NoteMeta {
         id,
@@ -81,6 +107,65 @@ pub fn update_note_raw(meta: &NoteMeta, body: &str) -> String {
     format!("{}{}", fm, body)
 }
 
+/// Merge NoteMeta fields into existing frontmatter, preserving unknown YAML keys.
+/// Falls back to serialize_frontmatter() if the original has no frontmatter.
+pub fn merge_frontmatter(original_raw: &str, meta: &NoteMeta, body: &str) -> String {
+    let matter = Matter::<YAML>::new();
+    let parsed = matter.parse(original_raw);
+
+    // If original had no frontmatter, use the simple serializer
+    if parsed.matter.trim().is_empty() {
+        return update_note_raw(meta, body);
+    }
+
+    // Parse existing YAML into a Mapping to preserve all keys
+    let mut mapping: serde_yaml::Mapping = match serde_yaml::from_str(&parsed.matter) {
+        Ok(m) => m,
+        Err(_) => return update_note_raw(meta, body), // unparseable YAML, fall back
+    };
+
+    // Update only our known fields
+    if !meta.id.is_empty() {
+        mapping.insert(
+            serde_yaml::Value::String("id".into()),
+            serde_yaml::Value::String(meta.id.clone()),
+        );
+    }
+    mapping.insert(
+        serde_yaml::Value::String("title".into()),
+        serde_yaml::Value::String(meta.title.clone()),
+    );
+    mapping.insert(
+        serde_yaml::Value::String("tags".into()),
+        serde_yaml::Value::Sequence(
+            meta.tags
+                .iter()
+                .map(|t| serde_yaml::Value::String(t.clone()))
+                .collect(),
+        ),
+    );
+    mapping.insert(
+        serde_yaml::Value::String("pinned".into()),
+        serde_yaml::Value::Bool(meta.pinned),
+    );
+    mapping.insert(
+        serde_yaml::Value::String("created".into()),
+        serde_yaml::Value::String(meta.created.to_rfc3339()),
+    );
+    mapping.insert(
+        serde_yaml::Value::String("modified".into()),
+        serde_yaml::Value::String(meta.modified.to_rfc3339()),
+    );
+
+    // Serialize the mapping back to YAML
+    let yaml_str = match serde_yaml::to_string(&serde_yaml::Value::Mapping(mapping)) {
+        Ok(s) => s,
+        Err(_) => return update_note_raw(meta, body),
+    };
+
+    format!("---\n{}---\n{}", yaml_str, body)
+}
+
 fn filename_to_title(filename: &str) -> String {
     let stem = filename.trim_end_matches(".md");
     // Only replace dashes/underscores acting as word separators (between non-space chars).

src-tauri/src/vault/operations.rs

@@ -1,6 +1,6 @@
 use crate::types::{NoteContent, NoteEntry, NoteMeta, NotebookEntry, VaultState};
 use crate::vault::frontmatter;
-use chrono::Utc;
+use chrono::{Local, Utc};
 use rayon::prelude::*;
 use std::fs;
 use std::io::Read;
@@ -184,13 +184,19 @@ fn read_note_entry_from_str(
 
     let (mut meta, content) = frontmatter::parse_note(raw, &filename);
 
-    // Use filesystem times if frontmatter didn't have them
+    // Use filesystem times only if frontmatter didn't have created/modified fields
+    let has_created = raw.contains("\ncreated:") || raw.starts_with("created:");
+    let has_modified = raw.contains("\nmodified:") || raw.starts_with("modified:");
     if let Ok(fs_meta) = fs::metadata(path) {
-        if let Ok(modified) = fs_meta.modified() {
-            meta.modified = modified.into();
+        if !has_modified {
+            if let Ok(modified) = fs_meta.modified() {
+                meta.modified = modified.into();
+            }
         }
-        if let Ok(created) = fs_meta.created() {
-            meta.created = created.into();
+        if !has_created {
+            if let Ok(created) = fs_meta.created() {
+                meta.created = created.into();
+            }
         }
     }
 
@@ -233,7 +239,19 @@ pub fn save_note(path: &str, meta: &NoteMeta, body: &str) -> Result<(), String>
     let mut updated_meta = meta.clone();
     updated_meta.modified = Utc::now();
 
-    let raw = frontmatter::update_note_raw(&updated_meta, body);
+    // Generate UUID on first save if note didn't have one
+    if updated_meta.id.is_empty() {
+        updated_meta.id = Uuid::new_v4().to_string();
+    }
+
+    // Read existing file to preserve unknown frontmatter fields
+    let existing = fs::read_to_string(path).unwrap_or_default();
+    let raw = if existing.is_empty() {
+        frontmatter::update_note_raw(&updated_meta, body)
+    } else {
+        frontmatter::merge_frontmatter(&existing, &updated_meta, body)
+    };
+
     fs::write(path, raw).map_err(|e| e.to_string())?;
     Ok(())
 }
@@ -290,6 +308,49 @@ pub fn create_note(
     })
 }
 
+pub fn create_daily_note(vault_path: &str) -> Result<NoteEntry, String> {
+    let today = Local::now();
+    let date_str = today.format("%Y-%m-%d").to_string();
+    let title = today.format("%B %d, %Y").to_string();
+
+    let dir = Path::new(vault_path).join("Daily");
+    fs::create_dir_all(&dir).map_err(|e| e.to_string())?;
+
+    let file_path = dir.join(format!("{}.md", date_str));
+    let vault_root = Path::new(vault_path);
+
+    // If today's note already exists, return it
+    if file_path.exists() {
+        return read_note_entry(&file_path, vault_root);
+    }
+
+    let now = Utc::now();
+    let meta = NoteMeta {
+        id: Uuid::new_v4().to_string(),
+        title,
+        tags: vec!["daily".to_string()],
+        pinned: false,
+        created: now,
+        modified: now,
+    };
+
+    let raw = frontmatter::update_note_raw(&meta, "\n");
+    fs::write(&file_path, raw).map_err(|e| e.to_string())?;
+
+    let relative = file_path
+        .strip_prefix(vault_root)
+        .unwrap_or(&file_path)
+        .to_string_lossy()
+        .to_string();
+
+    Ok(NoteEntry {
+        path: file_path.to_string_lossy().to_string(),
+        relative_path: relative,
+        meta,
+        preview: String::new(),
+    })
+}
+
 pub fn create_notebook(
     vault_path: &str,
     parent_relative: Option<&str>,
@@ -385,7 +446,10 @@ pub fn rename_note(path: &str, new_title: &str) -> Result<String, String> {
     let (mut meta, content) = frontmatter::parse_note(&raw, &filename);
     meta.title = new_title.to_string();
     meta.modified = Utc::now();
-    let updated = frontmatter::update_note_raw(&meta, &content);
+    if meta.id.is_empty() {
+        meta.id = Uuid::new_v4().to_string();
+    }
+    let updated = frontmatter::merge_frontmatter(&raw, &meta, &content);
 
     // Rename file
     let new_filename = sanitize_filename(new_title);