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use glib;
use glib::translate::*;
use glib::value::ToSendValue;
use gst;
use gst::miniobject::*;
use gst_rtsp_server_sys;

use std::fmt;

gst_define_mini_object_wrapper!(
    RTSPToken,
    RTSPTokenRef,
    gst_rtsp_server_sys::GstRTSPToken,
    [Debug,],
    || gst_rtsp_server_sys::gst_rtsp_token_get_type()
);

impl RTSPToken {
    /// Create a new empty Authorization token.
    ///
    /// # Returns
    ///
    /// a new empty authorization token.
    pub fn new_empty() -> Self {
        assert_initialized_main_thread!();
        unsafe { from_glib_full(gst_rtsp_server_sys::gst_rtsp_token_new_empty()) }
    }

    /// Create a new Authorization token with the given fieldnames and values.
    /// Arguments are given similar to `gst::Structure::new`.
    /// ## `firstfield`
    /// the first fieldname
    ///
    /// # Returns
    ///
    /// a new authorization token.
    pub fn new(values: &[(&str, &dyn ToSendValue)]) -> Self {
        let mut token = RTSPToken::new_empty();

        {
            let token = token.get_mut().unwrap();
            let structure = token.get_mut_structure().unwrap();

            for &(f, v) in values {
                structure.set_value(f, v.to_send_value());
            }
        }

        token
    }
}

impl RTSPTokenRef {
    pub fn get_string(&self, field: &str) -> Option<String> {
        unsafe {
            from_glib_none(gst_rtsp_server_sys::gst_rtsp_token_get_string(
                self.as_mut_ptr(),
                field.to_glib_none().0,
            ))
        }
    }

    pub fn get_structure(&self) -> Option<gst::Structure> {
        unsafe {
            from_glib_none(gst_rtsp_server_sys::gst_rtsp_token_get_structure(
                self.as_mut_ptr(),
            ))
        }
    }

    pub fn is_allowed(&self, field: &str) -> bool {
        unsafe {
            from_glib(gst_rtsp_server_sys::gst_rtsp_token_is_allowed(
                self.as_mut_ptr(),
                field.to_glib_none().0,
            ))
        }
    }

    pub fn get_mut_structure(&mut self) -> Option<&mut gst::StructureRef> {
        unsafe {
            let structure =
                gst_rtsp_server_sys::gst_rtsp_token_writable_structure(self.as_mut_ptr());
            if structure.is_null() {
                None
            } else {
                Some(gst::StructureRef::from_glib_borrow_mut(structure))
            }
        }
    }
}

impl fmt::Debug for RTSPTokenRef {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.debug_struct("RTSPToken")
            .field("structure", &self.get_structure())
            .finish()
    }
}