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//! The watcher everywhere but macOS and Linux: `notify`'s recommended
//! watcher, recursive on the whole served folder, since it can't leave a
//! subtree out. Sifting drops what is out of sight.

use std::path::{Path, PathBuf};

use anyhow::Result;
use notify::{RecommendedWatcher, RecursiveMode, Watcher};

use super::{Handler, WatchSet};

/// The platform's watcher, on the served folder. Stops when dropped.
pub struct Platform {
    _watcher: RecommendedWatcher,
}

impl Platform {
    pub fn new(served: &Path, handler: Handler) -> Result<Self> {
        let mut watcher = notify::recommended_watcher(move |event| handler(event))?;
        watcher.watch(served, RecursiveMode::Recursive)?;
        Ok(Self { _watcher: watcher })
    }

    /// The whole served folder is watched whatever the watch set says.
    pub fn apply(&mut self, _set: WatchSet) -> Vec<(PathBuf, bool)> {
        Vec::new()
    }

    pub fn covers(&self, _folder: &Path) -> bool {
        true
    }

    pub fn watches_within(&self, _path: &Path) -> bool {
        false
    }
}