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

use glib::translate::*;

use crate::{Credentials, CredentialsType};

impl Credentials {
    /// Gets a pointer to native credentials of type @native_type from
    /// @self.
    ///
    /// It is a programming error (which will cause a warning to be
    /// logged) to use this method if there is no #GCredentials support for
    /// the OS or if @native_type isn't supported by the OS.
    /// ## `native_type`
    /// The type of native credentials to get.
    ///
    /// # Returns
    ///
    /// The pointer to native credentials or
    ///     [`None`] if there is no #GCredentials support for the OS or if @native_type
    ///     isn't supported by the OS. Do not free the returned data, it is owned
    ///     by @self.
    #[doc(alias = "g_credentials_get_native")]
    #[doc(alias = "get_native")]
    pub fn native(&self, native_type: CredentialsType) -> glib::ffi::gpointer {
        unsafe { ffi::g_credentials_get_native(self.to_glib_none().0, native_type.into_glib()) }
    }

    /// Tries to get the UNIX process identifier from @self. This
    /// method is only available on UNIX platforms.
    ///
    /// This operation can fail if #GCredentials is not supported on the
    /// OS or if the native credentials type does not contain information
    /// about the UNIX process ID.
    ///
    /// # Returns
    ///
    /// The UNIX process ID, or `-1` if @error is set.
    #[cfg(unix)]
    #[cfg_attr(docsrs, doc(cfg(unix)))]
    #[doc(alias = "g_credentials_get_unix_pid")]
    #[doc(alias = "get_unix_pid")]
    pub fn unix_pid(&self) -> Result<libc::pid_t, glib::Error> {
        unsafe {
            let mut error = std::ptr::null_mut();
            let ret = ffi::g_credentials_get_unix_pid(self.to_glib_none().0, &mut error);
            if error.is_null() {
                Ok(ret)
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    /// Tries to get the UNIX user identifier from @self. This
    /// method is only available on UNIX platforms.
    ///
    /// This operation can fail if #GCredentials is not supported on the
    /// OS or if the native credentials type does not contain information
    /// about the UNIX user.
    ///
    /// # Returns
    ///
    /// The UNIX user identifier or `-1` if @error is set.
    #[cfg(unix)]
    #[cfg_attr(docsrs, doc(cfg(unix)))]
    #[doc(alias = "g_credentials_get_unix_user")]
    #[doc(alias = "get_unix_user")]
    pub fn unix_user(&self) -> Result<libc::uid_t, glib::Error> {
        unsafe {
            let mut error = std::ptr::null_mut();
            let ret = ffi::g_credentials_get_unix_user(self.to_glib_none().0, &mut error);
            if error.is_null() {
                Ok(ret)
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    /// Copies the native credentials of type @native_type from @native
    /// into @self.
    ///
    /// It is a programming error (which will cause a warning to be
    /// logged) to use this method if there is no #GCredentials support for
    /// the OS or if @native_type isn't supported by the OS.
    /// ## `native_type`
    /// The type of native credentials to set.
    /// ## `native`
    /// A pointer to native credentials.
    #[doc(alias = "g_credentials_set_native")]
    pub unsafe fn set_native(&self, native_type: CredentialsType, native: glib::ffi::gpointer) {
        unsafe {
            ffi::g_credentials_set_native(self.to_glib_none().0, native_type.into_glib(), native)
        }
    }

    /// Tries to set the UNIX user identifier on @self. This method
    /// is only available on UNIX platforms.
    ///
    /// This operation can fail if #GCredentials is not supported on the
    /// OS or if the native credentials type does not contain information
    /// about the UNIX user. It can also fail if the OS does not allow the
    /// use of "spoofed" credentials.
    /// ## `uid`
    /// The UNIX user identifier to set.
    ///
    /// # Returns
    ///
    /// [`true`] if @uid was set, [`false`] if error is set.
    #[cfg(unix)]
    #[cfg_attr(docsrs, doc(cfg(unix)))]
    #[doc(alias = "g_credentials_set_unix_user")]
    pub fn set_unix_user(&self, uid: libc::uid_t) -> Result<(), glib::Error> {
        unsafe {
            let mut error = std::ptr::null_mut();
            let is_ok = ffi::g_credentials_set_unix_user(self.to_glib_none().0, uid, &mut error);
            debug_assert_eq!(is_ok == glib::ffi::GFALSE, !error.is_null());
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }
}