// Take a look at the license at the top of the repository in the LICENSE file.

use crate::FileInfo;
use glib::translate::*;
use std::mem;
use std::time::{Duration, SystemTime};

impl FileInfo {
    /// Gets the modification time of the current `self` and sets it
    /// in `result`.
    ///
    /// # Deprecated since 2.62
    ///
    /// Use [`modification_date_time()`][Self::modification_date_time()] instead, as
    ///  `GTimeVal` is deprecated due to the year 2038 problem.
    ///
    /// # Returns
    ///
    ///
    /// ## `result`
    /// a `GTimeVal`.
    #[cfg_attr(feature = "v2_62", deprecated)]
    #[doc(alias = "g_file_info_get_modification_time")]
    #[doc(alias = "get_modification_time")]
    pub fn modification_time(&self) -> SystemTime {
        unsafe {
            let mut result = mem::MaybeUninit::uninit();
            ffi::g_file_info_get_modification_time(self.to_glib_none().0, result.as_mut_ptr());
            let result = result.assume_init();

            if result.tv_sec > 0 {
                let duration = Duration::from_secs(result.tv_sec as u64)
                    + Duration::from_millis(result.tv_usec as u64);
                SystemTime::UNIX_EPOCH + duration
            } else {
                let duration = Duration::from_secs((-result.tv_sec) as u64)
                    + Duration::from_millis(result.tv_usec as u64);
                SystemTime::UNIX_EPOCH - duration
            }
        }
    }

    /// Sets the [`FILE_ATTRIBUTE_TIME_MODIFIED`][crate::FILE_ATTRIBUTE_TIME_MODIFIED] and
    /// [`FILE_ATTRIBUTE_TIME_MODIFIED_USEC`][crate::FILE_ATTRIBUTE_TIME_MODIFIED_USEC] attributes in the file info to the
    /// given time value.
    ///
    /// # Deprecated since 2.62
    ///
    /// Use [`set_modification_date_time()`][Self::set_modification_date_time()] instead, as
    ///  `GTimeVal` is deprecated due to the year 2038 problem.
    /// ## `mtime`
    /// a `GTimeVal`.
    #[cfg_attr(feature = "v2_62", deprecated)]
    #[doc(alias = "g_file_info_set_modification_time")]
    pub fn set_modification_time(&self, mtime: SystemTime) {
        let diff = mtime
            .duration_since(SystemTime::UNIX_EPOCH)
            .expect("failed to convert time");
        unsafe {
            ffi::g_file_info_set_modification_time(
                self.to_glib_none().0,
                mut_override(&glib::ffi::GTimeVal {
                    tv_sec: diff.as_secs() as _,
                    tv_usec: diff.subsec_micros() as _,
                }),
            );
        }
    }
}