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//! Management functions, e.g. for destroying and reparing a database.
use options::{Options, c_options};
use error::Error;
use std::ffi::CString;
use std::ptr;
use std::path::Path;

use leveldb_sys::{leveldb_destroy_db, leveldb_repair_db};

/// destroy a database. You shouldn't hold a handle on the database anywhere at that time.
pub fn destroy(name: &Path, options: Options) -> Result<(), Error> {
    let mut error = ptr::null_mut();
    unsafe {
        let c_string = CString::new(name.to_str().unwrap()).unwrap();
        let c_options = c_options(&options, None);
        leveldb_destroy_db(c_options,
                           c_string.as_bytes_with_nul().as_ptr() as *const i8,
                           &mut error);
    };

    if error == ptr::null_mut() {
        Ok(())
    } else {
        Err(Error::new_from_i8(error))
    }
}

/// repair the database. The database should be closed at this moment.
pub fn repair(name: &Path, options: Options) -> Result<(), Error> {
    let mut error = ptr::null_mut();
    unsafe {
        let c_string = CString::new(name.to_str().unwrap()).unwrap();
        let c_options = c_options(&options, None);
        leveldb_repair_db(c_options,
                          c_string.as_bytes_with_nul().as_ptr() as *const i8,
                          &mut error);
    };

    if error == ptr::null_mut() {
        Ok(())
    } else {
        Err(Error::new_from_i8(error))
    }
}