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use glib::translate::*;
use glib::{GString, IntoGStr, IntoOptionalGStr};
use std::collections::HashMap;
use std::ptr;

use crate::MessageHeaders;

impl MessageHeaders {
    /// Looks up the "Content-Disposition" header in @self, parses it, and
    /// returns its value in *@disposition and *@params.
    ///
    /// @params can be [`None`] if you are only interested in the disposition-type.
    ///
    /// In HTTP, the most common use of this header is to set a
    /// disposition-type of "attachment", to suggest to the browser that a
    /// response should be saved to disk rather than displayed in the
    /// browser. If @params contains a "filename" parameter, this is a
    /// suggestion of a filename to use. (If the parameter value in the
    /// header contains an absolute or relative path, libsoup will truncate
    /// it down to just the final path component, so you do not need to
    /// test this yourself.)
    ///
    /// Content-Disposition is also used in "multipart/form-data", however
    /// this is handled automatically by [`Multipart`][crate::Multipart] and the associated
    /// form methods.
    ///
    /// # Returns
    ///
    /// [`true`] if @self contains a "Content-Disposition"
    ///   header, [`false`] if not (in which case *@disposition and *@params
    ///   will be unchanged).
    ///
    /// ## `disposition`
    /// return location for the
    ///   disposition-type, or [`None`]
    ///
    /// ## `params`
    /// return
    ///   location for the Content-Disposition parameters, or [`None`]
    #[doc(alias = "soup_message_headers_get_content_disposition")]
    pub fn content_disposition(&self) -> Option<(GString, HashMap<String, String>)> {
        let mut disposition = ptr::null_mut();
        let mut params = ptr::null_mut();
        unsafe {
            if bool::from_glib(ffi::soup_message_headers_get_content_disposition(
                mut_override(self.to_glib_none().0),
                &mut disposition,
                &mut params,
            )) {
                let params = if !params.is_null() {
                    HashMap::from_glib_full(params)
                } else {
                    HashMap::new()
                };
                Some((GString::from_glib_full(disposition), params))
            } else {
                None
            }
        }
    }

    /// Sets the "Content-Disposition" header in @self to @disposition,
    /// optionally with additional parameters specified in @params.
    ///
    /// See [`content_disposition()`][Self::content_disposition()] for a discussion
    /// of how Content-Disposition is used in HTTP.
    /// ## `disposition`
    /// the disposition-type
    /// ## `params`
    /// additional parameters
    #[doc(alias = "soup_message_headers_set_content_disposition")]
    pub fn set_content_disposition(
        &self,
        disposition: Option<impl IntoGStr>,
        params: Option<HashMap<String, String>>,
    ) {
        disposition.run_with_gstr(|disposition| unsafe {
            ffi::soup_message_headers_set_content_disposition(
                self.to_glib_none().0,
                disposition.to_glib_none().0,
                params.to_glib_none().0,
            )
        })
    }

    /// Looks up the "Content-Type" header in @self, parses it, and returns
    /// its value in *@content_type and *@params.
    ///
    /// @params can be [`None`] if you are only interested in the content type itself.
    ///
    /// # Returns
    ///
    /// a string with the value of the
    ///   "Content-Type" header or [`None`] if @self does not contain that
    ///   header or it cannot be parsed (in which case *@params will be
    ///   unchanged).
    ///
    /// ## `params`
    ///
    ///   return location for the Content-Type parameters (eg, "charset"), or
    ///   [`None`]
    #[doc(alias = "soup_message_headers_get_content_type")]
    pub fn content_type(&self) -> Option<(GString, HashMap<String, String>)> {
        let mut params = ptr::null_mut();
        unsafe {
            let content_type = ffi::soup_message_headers_get_content_type(
                mut_override(self.to_glib_none().0),
                &mut params,
            );
            if !content_type.is_null() {
                let params = if !params.is_null() {
                    HashMap::from_glib_full(params)
                } else {
                    HashMap::new()
                };
                Some((GString::from_glib_full(content_type), params))
            } else {
                None
            }
        }
    }

    /// Sets the "Content-Type" header in @self to @content_type.
    ///
    /// Accepts additional parameters specified in @params.
    /// ## `content_type`
    /// the MIME type
    /// ## `params`
    /// additional parameters
    #[doc(alias = "soup_message_headers_set_content_type")]
    pub fn set_content_type(
        &self,
        content_type: Option<impl IntoGStr>,
        params: Option<HashMap<String, String>>,
    ) {
        content_type.run_with_gstr(|content_type| unsafe {
            ffi::soup_message_headers_set_content_disposition(
                self.to_glib_none().0,
                content_type.to_glib_none().0,
                params.to_glib_none().0,
            )
        })
    }
}