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  • use super::State;
    
    use crate::{
        database::media::FileMeta, server_server, 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>,
    
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        body: Ruma<create_content::Request<'_>>,
    
    ) -> ConduitResult<create_content::Response> {
        let mxc = format!(
            "mxc://{}/{}",
            db.globals.server_name(),
            utils::random_string(MXC_LENGTH)
        );
    
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        db.media.create(
            mxc.clone(),
            &body.filename.as_deref(),
            &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 async fn get_content_route(
    
        db: State<'_, Database>,
    
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        body: Ruma<get_content::Request<'_>>,
    
        _server_name: String,
        _media_id: String,
    ) -> ConduitResult<get_content::Response> {
    
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        let mxc = format!(
            "mxc://{}/{}",
            db.globals.server_name(),
            utils::random_string(MXC_LENGTH)
        );
    
        if let Some(FileMeta {
            filename,
            content_type,
            file,
    
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        }) = db.media.get(&mxc)?
    
        {
            Ok(get_content::Response {
                file,
                content_type,
                content_disposition: filename.unwrap_or_default(), // TODO: Spec says this should be optional
            }
            .into())
    
        } else if body.allow_remote {
            let get_content_response = server_server::send_request(
    
                &db.globals,
    
                body.server_name.as_ref(),
                get_content::Request {
                    allow_remote: false,
                    server_name: &body.server_name,
                    media_id: &body.media_id,
                },
            )
            .await?;
    
            db.media.create(
                mxc,
                &Some(&get_content_response.content_disposition),
                &get_content_response.content_type,
                &get_content_response.file,
            )?;
    
            Ok(get_content_response.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 async fn get_content_thumbnail_route(
    
        db: State<'_, Database>,
    
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        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 if body.allow_remote {
            let get_thumbnail_response = server_server::send_request(
    
                &db.globals,
    
                body.server_name.as_ref(),
                get_content_thumbnail::Request {
                    allow_remote: false,
                    height: body.height,
                    width: body.width,
                    method: body.method,
                    server_name: &body.server_name,
                    media_id: &body.media_id,
                },
            )
            .await?;
    
            let mxc = format!(
                "mxc://{}/{}",
                db.globals.server_name(),
                utils::random_string(MXC_LENGTH)
            );
    
            db.media.upload_thumbnail(
                mxc,
                &None,
                &get_thumbnail_response.content_type,
                body.width.try_into().expect("all UInts are valid u32s"),
                body.height.try_into().expect("all UInts are valid u32s"),
                &get_thumbnail_response.file,
            )?;
    
            Ok(get_thumbnail_response.into())
    
        } else {
            Err(Error::BadRequest(ErrorKind::NotFound, "Media not found."))
        }
    }