diskwatch 0.1.2

Single-host, read-only disk diagnostics TUI. Eight tabs across devices, volumes, filesystems, IO, SMART, hot files, and insights. Sibling to netwatch and syswatch.
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//! Filesystem (mount) enumeration via `sysinfo::Disks`.
//!
//! One entry per mount point. sysinfo provides total / available bytes,
//! file-system kind, mount path, device name. Inode usage and 7d growth
//! aren't in sysinfo — inode % is `None` for now; growth is computed by
//! the App from a snapshot ring.

use sysinfo::Disks;

#[derive(Debug, Clone)]
pub struct FsTick {
    pub mount: String,
    pub device: String,
    pub fs_type: String,
    pub size_bytes: u64,
    pub used_bytes: u64,
    pub avail_bytes: u64,
    pub inode_pct: Option<u32>,
    pub is_removable: bool,
    pub is_system: bool,
}

pub fn collect() -> Vec<FsTick> {
    let disks = Disks::new_with_refreshed_list();
    let mut out: Vec<FsTick> = disks
        .list()
        .iter()
        .map(|d| {
            let mount = d.mount_point().to_string_lossy().to_string();
            let device = d.name().to_string_lossy().to_string();
            let fs_type = d.file_system().to_string_lossy().to_string();
            let total = d.total_space();
            let avail = d.available_space();
            let used = total.saturating_sub(avail);
            FsTick {
                is_system: is_system_mount(&mount),
                mount,
                device,
                fs_type,
                size_bytes: total,
                used_bytes: used,
                avail_bytes: avail,
                inode_pct: None,
                is_removable: d.is_removable(),
            }
        })
        .collect();
    // Stable order: system mounts first, then user, then size desc.
    out.sort_by(|a, b| {
        b.is_system
            .cmp(&a.is_system)
            .then(b.size_bytes.cmp(&a.size_bytes))
    });
    out
}

fn is_system_mount(path: &str) -> bool {
    matches!(
        path,
        "/" | "/boot"
            | "/boot/efi"
            | "/private/var/vm"
            | "/System/Volumes/Data"
            | "/System/Volumes/Preboot"
            | "/System/Volumes/Recovery"
            | "/System/Volumes/Update"
            | "/System/Volumes/VM"
            | "/System/Volumes/iSCPreboot"
            | "/System/Volumes/Hardware"
    ) || path.starts_with("/System/Volumes/")
        || path.starts_with("/dev")
        || path.starts_with("/proc")
        || path.starts_with("/sys")
}