kern-code 0.4.2

Kern — a calm, complete desktop code editor (Tauri 2 + React + Monaco)
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// src-tauri/src/db.rs — minimal SQLite explorer via the `sqlite3` CLI (so there's
// no heavy native dependency; lights up when sqlite3 is installed).
use std::process::Command;

#[tauri::command]
pub async fn db_tables(path: String) -> Result<Vec<String>, String> {
    tokio::task::spawn_blocking(move || {
        let out = Command::new("sqlite3")
            .arg(&path)
            .arg(".tables")
            .output()
            .map_err(|e| format!("sqlite3: {e}"))?;
        if !out.status.success() {
            return Err(String::from_utf8_lossy(&out.stderr).to_string());
        }
        Ok(String::from_utf8_lossy(&out.stdout)
            .split_whitespace()
            .map(|s| s.to_string())
            .collect())
    })
    .await
    .map_err(|e| e.to_string())?
}

/// Run a query and return the rows as a JSON string (sqlite3 -json).
#[tauri::command]
pub async fn db_query(path: String, sql: String) -> Result<String, String> {
    tokio::task::spawn_blocking(move || {
        let out = Command::new("sqlite3")
            .arg("-json")
            .arg(&path)
            .arg(&sql)
            .output()
            .map_err(|e| format!("sqlite3: {e}"))?;
        if !out.status.success() {
            return Err(String::from_utf8_lossy(&out.stderr).to_string());
        }
        let s = String::from_utf8_lossy(&out.stdout).to_string();
        Ok(if s.trim().is_empty() { "[]".into() } else { s })
    })
    .await
    .map_err(|e| e.to_string())?
}