212 lines
5.8 KiB
Rust
212 lines
5.8 KiB
Rust
use std::collections::{HashMap, HashSet};
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use std::path::{Path, PathBuf};
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use std::sync::mpsc::channel;
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use std::time::Duration;
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use std::{fs, io};
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use markdown;
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use notify::{
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DebouncedEvent::{Create, NoticeRemove, NoticeWrite, Remove},
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RecommendedWatcher, RecursiveMode, Watcher,
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};
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use serde::{Deserialize, Serialize};
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use toml;
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type TagName = String;
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type TagId = String;
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type TagMap = HashMap<TagName, TagId>;
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// Maps field to value.
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type NoteMap = HashMap<String, String>;
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type NotesMap = HashMap<PathBuf, NoteMap>;
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const TAG_TYPE_ID: &'static str = "5";
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#[derive(Serialize, Deserialize)]
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struct Configuration {
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path_in: String,
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path_out: String,
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}
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struct Context {
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config: Configuration,
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tags: Option<TagMap>,
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public_tag_id: Option<String>,
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}
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impl Context {
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fn new(config: Configuration) -> Self {
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Self {
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config,
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tags: None,
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public_tag_id: None,
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}
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}
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fn update_tags(&mut self, notes: &NotesMap) {
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let tags = analyze_tags(notes);
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self.public_tag_id = tags.get("public").map(|x| x.clone());
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self.tags = Some(tags);
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}
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fn publish_public(&self, notes: &NotesMap) -> Result<(), io::Error> {
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let public_tag_id = if let Some(id) = &self.public_tag_id {
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id
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} else {
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return Ok(());
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};
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let mut tagged_notes = HashSet::new();
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for note in notes.values() {
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if let Some(tag_id) = note.get("tag_id") {
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if tag_id == public_tag_id {
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tagged_notes.insert(note.get("note_id").unwrap());
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}
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}
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}
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let tagged_notes = tagged_notes.iter().map(|¬e_id| {
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notes
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.iter()
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.find(|(_, note)| ¬e["id"] == note_id)
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.map(|(path, _)| path)
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.unwrap()
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});
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for note_id in tagged_notes {
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let note = ¬es[note_id];
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if let Some(content) = note.get("markdown_content") {
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println!("Gonna publish this content: {}", content);
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// TODO crash in markdown!
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let content = markdown::to_html(content);
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// TODO do a better sanitize of the title.
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let title = content.split("\n").next().unwrap().replace(" ", "_");
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let path = self.config.path_out.clone() + &format!("/{}.html", title);
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fs::write(path, content)?;
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}
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}
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Ok(())
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}
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}
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fn analyze_tags(notes: &NotesMap) -> TagMap {
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let mut tags = TagMap::new();
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for note in notes.values() {
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if let Some(type_id) = note.get("type_") {
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if type_id == TAG_TYPE_ID {
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tags.insert(note["markdown_content"].clone(), note["id"].clone());
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}
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}
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}
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tags
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}
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fn run_hooks(context: &mut Context, notes: &NotesMap) -> Result<(), io::Error> {
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context.update_tags(notes);
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context.publish_public(notes)
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}
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fn read_file(path: &Path) -> Result<NoteMap, io::Error> {
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let content = fs::read_to_string(path)?;
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let content = content.trim().split("\n").collect::<Vec<_>>();
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let mut fields = NoteMap::new();
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for j in 0..content.len() {
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let i = content.len() - 1 - j;
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let line = content[i];
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if let Some(index) = line.find(":") {
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let (key, value) = line.split_at(index);
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// Remove the ":" character.
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let value = value[1..].trim();
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if key.len() > 0 && value.len() > 0 {
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fields.insert(key.to_string(), value.to_string());
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}
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} else {
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// First line without a metadata field! Reverse content, it's the markdown block.
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let markdown = content[0..i]
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.iter()
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.map(|s| s.to_string())
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.collect::<Vec<_>>()
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.join("\n");
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let markdown = markdown.trim();
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fields.insert("markdown_content".to_string(), markdown.to_string());
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break;
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}
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}
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println!(
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"Extracted content of {} ({} fields)",
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fields["id"],
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fields.len()
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);
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Ok(fields)
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}
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fn main() -> Result<(), io::Error> {
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let config_content = fs::read_to_string("./config.toml")?;
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let config: Configuration = toml::from_str(&config_content).unwrap();
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match fs::metadata(&config.path_out) {
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Ok(_) => {}
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Err(_) => {
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fs::create_dir(&config.path_out)?;
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}
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}
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let mut num_files = 0;
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let mut files = NotesMap::new();
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for entry in fs::read_dir(&config.path_in)? {
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let dir_entry = entry?;
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if !dir_entry.file_type()?.is_file() {
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continue;
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}
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let path = dir_entry.path();
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let read_file = read_file(&path)?;
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files.insert(path, read_file);
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num_files += 1;
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}
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println!("Found {} files.", num_files);
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let mut context = Context::new(config);
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run_hooks(&mut context, &files)?;
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println!("Now listening to disk events...");
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let (tx, rx) = channel();
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let mut watcher: RecommendedWatcher = Watcher::new(tx, Duration::from_secs(2)).unwrap();
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watcher
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.watch("./assets/", RecursiveMode::Recursive)
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.unwrap();
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loop {
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match rx.recv() {
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Ok(evt) => {
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match &evt {
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NoticeWrite(path) | Create(path) => {
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files.insert(path.clone(), read_file(path)?);
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}
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NoticeRemove(path) | Remove(path) => {
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files.remove(path);
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}
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_ => {}
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}
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run_hooks(&mut context, &files)?;
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println!("{:?}", evt);
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}
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Err(e) => println!("watch error: {:?}", e),
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}
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}
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}
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