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//! [GET /_matrix/media/r0/thumbnail/{serverName}/{mediaId}](https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-media-r0-thumbnail-servername-mediaid)

use js_int::UInt;
use ruma_api::ruma_api;
use serde::{Deserialize, Serialize};

/// The desired resizing method.
#[derive(Clone, Copy, Debug, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum Method {
    /// Crop the original to produce the requested image dimensions.
    Crop,
    /// Maintain the original aspect ratio of the source image.
    Scale,
}

ruma_api! {
    metadata {
        description: "Get a thumbnail of content from the media store.",
        method: GET,
        name: "get_content_thumbnail",
        path: "/_matrix/media/r0/thumbnail/:server_name/:media_id",
        rate_limited: true,
        requires_authentication: false,
    }

    request {
        /// Whether to fetch media deemed remote.
        ///
        /// Used to prevent routing loops. Defaults to `true`.
        #[ruma_api(query)]
        pub allow_remote: Option<bool>,
        /// The media ID from the mxc:// URI (the path component).
        #[ruma_api(path)]
        pub media_id: String,
        /// The server name from the mxc:// URI (the authoritory component).
        #[ruma_api(path)]
        pub server_name: String,
        /// The *desired* height of the thumbnail. The actual thumbnail may not match the size
        /// specified.
        #[ruma_api(query)]
        pub height: UInt,
        /// The desired resizing method.
        #[ruma_api(query)]
        pub method: Option<Method>,
        /// The *desired* width of the thumbnail. The actual thumbnail may not match the size
        /// specified.
        #[ruma_api(query)]
        pub width: UInt,
    }

    response {
        /// The content type of the thumbnail.
        #[ruma_api(header = CONTENT_TYPE)]
        pub content_type: String,
        /// A thumbnail of the requested content.
        #[ruma_api(body)]
        pub file: Vec<u8>,
    }

    error: crate::Error
}