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  • use super::State;
    use crate::{database::media::FileMeta, utils, ConduitResult, Database, Error, Ruma};
    use ruma::api::client::{
        error::ErrorKind,
        r0::media::{create_content, get_content, get_content_thumbnail, get_media_config},
    };
    
    #[cfg(feature = "conduit_bin")]
    use rocket::{get, post};
    use std::convert::TryInto;
    
    const MXC_LENGTH: usize = 256;
    
    #[cfg_attr(feature = "conduit_bin", get("/_matrix/media/r0/config"))]
    pub fn get_media_config_route(
        db: State<'_, Database>,
    ) -> ConduitResult<get_media_config::Response> {
        Ok(get_media_config::Response {
            upload_size: db.globals.max_request_size().into(),
        }
        .into())
    }
    
    #[cfg_attr(
        feature = "conduit_bin",
        post("/_matrix/media/r0/upload", data = "<body>")
    )]
    pub fn create_content_route(
        db: State<'_, Database>,
        body: Ruma<create_content::Request>,
    ) -> ConduitResult<create_content::Response> {
        let mxc = format!(
            "mxc://{}/{}",
            db.globals.server_name(),
            utils::random_string(MXC_LENGTH)
        );
        db.media.create(
            mxc.clone(),
            body.filename.as_ref(),
            &body.content_type,
            &body.file,
        )?;
    
        Ok(create_content::Response { content_uri: mxc }.into())
    }
    
    #[cfg_attr(
        feature = "conduit_bin",
        get(
            "/_matrix/media/r0/download/<_server_name>/<_media_id>",
            data = "<body>"
        )
    )]
    pub fn get_content_route(
        db: State<'_, Database>,
        body: Ruma<get_content::Request>,
        _server_name: String,
        _media_id: String,
    ) -> ConduitResult<get_content::Response> {
        if let Some(FileMeta {
            filename,
            content_type,
            file,
        }) = db
            .media
            .get(format!("mxc://{}/{}", body.server_name, body.media_id))?
        {
            Ok(get_content::Response {
                file,
                content_type,
                content_disposition: filename.unwrap_or_default(), // TODO: Spec says this should be optional
            }
            .into())
        } else {
            Err(Error::BadRequest(ErrorKind::NotFound, "Media not found."))
        }
    }
    
    #[cfg_attr(
        feature = "conduit_bin",
        get(
            "/_matrix/media/r0/thumbnail/<_server_name>/<_media_id>",
            data = "<body>"
        )
    )]
    pub fn get_content_thumbnail_route(
        db: State<'_, Database>,
        body: Ruma<get_content_thumbnail::Request>,
        _server_name: String,
        _media_id: String,
    ) -> ConduitResult<get_content_thumbnail::Response> {
        if let Some(FileMeta {
            content_type, file, ..
        }) = db.media.get_thumbnail(
            format!("mxc://{}/{}", body.server_name, body.media_id),
            body.width
                .try_into()
                .map_err(|_| Error::BadRequest(ErrorKind::InvalidParam, "Width is invalid."))?,
            body.height
                .try_into()
                .map_err(|_| Error::BadRequest(ErrorKind::InvalidParam, "Width is invalid."))?,
        )? {
            Ok(get_content_thumbnail::Response { file, content_type }.into())
        } else {
            Err(Error::BadRequest(ErrorKind::NotFound, "Media not found."))
        }
    }