Add mastodon posting, update deps, go async

src/main.rs

@@ -1,16 +1,23 @@
+use mastodon::authorize_fedi;
 use rand::seq::SliceRandom;
 use std::convert::TryInto;
 use std::io::Cursor;
 use tracing::{event, Level};
+mod mastodon;
 mod twitter;
 mod wiki;
 use clap::{Parser, Subcommand};
 use image::{DynamicImage, RgbaImage};
+use resvg::tiny_skia::{Paint, PathBuilder, Pixmap, PixmapPaint, Stroke};
+use resvg::usvg::TreeParsing;
+use resvg::usvg::{Options, Transform};
+use resvg::Tree;
 use std::borrow::Cow;
-use tiny_skia::{Paint, PathBuilder, Pixmap, PixmapPaint, Stroke, Transform};
 use twitter::*;
 use wiki::*;
 
+use crate::mastodon::toot;
+
 static APP_USER_AGENT: &str = concat!(
     "bot_",
     env!("CARGO_PKG_NAME"),
@@ -22,30 +29,31 @@ static APP_USER_AGENT: &str = concat!(
 
 // Render the raw SVG data to an image
 fn render_svg(data: &[u8], height: u32, with_border: bool) -> StdError<DynamicImage> {
-    let opt = usvg::Options::default();
-    let rtree = usvg::Tree::from_data(data, &opt.to_ref()).expect("couldn't parse");
-    let svg_size = rtree.svg_node().size;
+    let opt = Options::default();
+    let rtree = resvg::usvg::Tree::from_data(data, &opt).expect("couldn't parse");
+    let svg_size = rtree.size;
     // Work out how wide the pixmap of height `height` needs to be to entirely fit the SVG.
-    let pm_width = ((height as f64 / svg_size.height()) * svg_size.width()).ceil() as u32;
+    let scale_factor = height as f32 / svg_size.height();
+    let pm_width = (scale_factor * svg_size.width()).ceil() as u32;
     let mut pixmap = Pixmap::new(pm_width, height).ok_or("Error creating pixmap")?;
     // Render the svg into a pixmap.
-    resvg::render(&rtree, usvg::FitTo::Height(height), pixmap.as_mut())
-        .ok_or("Error rendering svg")?;
+    Tree::from_usvg(&rtree).render(
+        Transform::from_scale(scale_factor, scale_factor),
+        &mut pixmap.as_mut(),
+    );
     // Make a wider pixmap with a 16:9 AR and the same height. This is a blesséd ratio by twitter
     // and means we see the whole image nicely in the timeline with no truncation.
     let mut bigger_pixmap =
         Pixmap::new(height / 9 * 16, height).ok_or("Error creating bigger pixmap")?;
     // Then draw our freshly rendered SVG into the middle of the bigger pixmap.
-    bigger_pixmap
-        .draw_pixmap(
-            ((bigger_pixmap.width() - pm_width) / 2).try_into().unwrap(),
-            0,
-            pixmap.as_ref(),
-            &PixmapPaint::default(),
-            Transform::identity(),
-            None,
-        )
-        .ok_or("Error drawing onto bigger pixmap")?;
+    bigger_pixmap.draw_pixmap(
+        ((bigger_pixmap.width() - pm_width) / 2).try_into().unwrap(),
+        0,
+        pixmap.as_ref(),
+        &PixmapPaint::default(),
+        Transform::identity(),
+        None,
+    );
     let (w, h) = (bigger_pixmap.width(), bigger_pixmap.height());
     // Render a red border for debug purposes
     if with_border {
@@ -88,14 +96,16 @@ struct Cli {
 #[derive(Subcommand)]
 enum Commands {
     /// Authorize the twitter application to acccess a user's account
-    Authorize,
+    AuthorizeTwitter,
     /// Scrape images from the category on wikimedia commons
     ScrapeCategory,
     /// Scrape images from the iso7010 wikipedia page
     ScrapeWeb,
     /// List tweets from the authed user's timeline
     ListTweets,
-    /// Run the bot - scrape, pick a random entry and tweet it
+    /// Authorize against a pleroma server
+    AuthorizeFedi,
+    /// Run the bot - scrape, pick a random entry and toot it
     RunBot {
         #[clap(short, long, action)]
         dry_run: bool,
@@ -106,20 +116,22 @@ enum Commands {
     Whoami,
 }
 
-fn main() -> StdError<()> {
+#[tokio::main]
+async fn main() -> StdError<()> {
     tracing_subscriber::fmt::init();
     let cli = Cli::parse();
     match &cli.command {
-        Commands::Authorize => do_authorize(),
-        Commands::ScrapeCategory => do_scrape_category(),
-        Commands::ScrapeWeb => do_scrape_web(),
-        Commands::ListTweets => do_list_tweets(),
-        Commands::Whoami => do_whoami(),
-        Commands::RunBot { dry_run, target } => run_bot(*dry_run, target.to_owned()),
+        Commands::AuthorizeTwitter => do_authorize().await,
+        Commands::ScrapeCategory => do_scrape_category().await,
+        Commands::ScrapeWeb => do_scrape_web().await,
+        Commands::ListTweets => do_list_tweets().await,
+        Commands::Whoami => do_whoami().await,
+        Commands::AuthorizeFedi => authorize_fedi().await,
+        Commands::RunBot { dry_run, target } => run_bot(*dry_run, target.to_owned()).await,
     }
 }
 
-fn do_whoami() -> StdError<()> {
+async fn do_whoami() -> StdError<()> {
     let user_token = user_token_from_env();
 
     let user: serde_json::Value = twitter_api(
@@ -127,13 +139,15 @@ fn do_whoami() -> StdError<()> {
         Some(&user_token),
         APIAction::Get,
         &[],
-    )?
-    .json()?;
+    )
+    .await?
+    .json()
+    .await?;
     println!("User @{}, (id: {})", user["screen_name"], user["id"]);
     Ok(())
 }
 
-fn do_list_tweets() -> StdError<()> {
+async fn do_list_tweets() -> StdError<()> {
     let user_token = user_token_from_env();
 
     let user = twitter_api(
@@ -141,8 +155,10 @@ fn do_list_tweets() -> StdError<()> {
         Some(&user_token),
         APIAction::Get,
         &[],
-    )?
-    .json::<serde_json::Value>()?;
+    )
+    .await?
+    .json::<serde_json::Value>()
+    .await?;
 
     let id = user["id"].as_u64().unwrap().to_string();
     let mut timeline = vec![];
@@ -165,8 +181,10 @@ fn do_list_tweets() -> StdError<()> {
             Some(&user_token),
             APIAction::Get,
             &[],
-        )?
-        .json::<serde_json::Value>()?;
+        )
+        .await?
+        .json::<serde_json::Value>()
+        .await?;
         let chunk = timeline_chunk.as_array().unwrap().to_owned();
         event!(Level::INFO, count = chunk.len(), "Got tweets.");
         if chunk.is_empty() {
@@ -186,8 +204,9 @@ fn do_list_tweets() -> StdError<()> {
     Ok(())
 }
 
-fn do_scrape_category() -> StdError<()> {
-    let mut files = get_files_in_category("Category:ISO_7010_safety_signs_(vector_drawings)")?;
+async fn do_scrape_category() -> StdError<()> {
+    let mut files =
+        get_files_in_category("Category:ISO_7010_safety_signs_(vector_drawings)").await?;
     files.sort();
     for f in files {
         println!("{}", f);
@@ -196,8 +215,12 @@ fn do_scrape_category() -> StdError<()> {
     Ok(())
 }
 
-fn do_scrape_web() -> StdError<()> {
-    let mut files: Vec<_> = scrape_web()?.into_iter().map(|(_, file)| file).collect();
+async fn do_scrape_web() -> StdError<()> {
+    let mut files: Vec<_> = scrape_web()
+        .await?
+        .into_iter()
+        .map(|(_, file)| file)
+        .collect();
     files.sort();
     for f in files {
         println!("{}", f);
@@ -206,16 +229,16 @@ fn do_scrape_web() -> StdError<()> {
     Ok(())
 }
 
-fn get_client(headers: Option<reqwest::header::HeaderMap>) -> StdError<reqwest::blocking::Client> {
-    let mut c = reqwest::blocking::Client::builder().user_agent(APP_USER_AGENT);
+fn get_client(headers: Option<reqwest::header::HeaderMap>) -> StdError<reqwest::Client> {
+    let mut c = reqwest::Client::builder().user_agent(APP_USER_AGENT);
     if let Some(headers) = headers {
         c = c.default_headers(headers);
     }
     Ok(c.build()?)
 }
 
-fn run_bot(dry_run: bool, target: Option<String>) -> StdError<()> {
-    let all = scrape_web()?;
+async fn run_bot(dry_run: bool, target: Option<String>) -> StdError<()> {
+    let all = scrape_web().await?;
     let (title, filename) = if let Some(target) = target {
         all.iter()
             .find(|(title, _)| title.to_lowercase().contains(&target.to_lowercase()))
@@ -227,10 +250,10 @@ fn run_bot(dry_run: bool, target: Option<String>) -> StdError<()> {
     let client = get_client(None)?;
     event!(Level::INFO, "Fetching metadata...");
     // TODO: could crash, probably doesn't matter
-    let meta = get_file_metadata(&[filename.as_str()])?.remove(0);
+    let meta = get_file_metadata(&[filename.as_str()]).await?.remove(0);
     event!(Level::INFO, %meta, "Got metadata");
     event!(Level::INFO, url = meta.url.to_string(), "Fetching image");
-    let svg = client.get(meta.url).send()?.bytes()?;
+    let svg = client.get(meta.url).send().await?.bytes().await?;
 
     let text = format!(
         "{}\n\nImage source: {}\nAuthor: Wikimedia Commons user {}\n{}{}",
@@ -247,7 +270,7 @@ fn run_bot(dry_run: bool, target: Option<String>) -> StdError<()> {
         let img = render_svg(&svg, 1000, false)?;
         let mut buf = Cursor::new(Vec::new());
         img.write_to(&mut buf, image::ImageFormat::Png)?;
-        tweet(&text, Some(buf.into_inner().into()))?;
+        toot(&text, Some(buf.into_inner().into())).await?;
     } else {
         // Render the image smaller for output to terminal
         let img = render_svg(&svg, 128, true)?;

src/mastodon.rs

@@ -0,0 +1,87 @@
+// Interface to mastodon (etc) instances
+
+use std::borrow::Cow;
+
+use megalodon::entities::UploadMedia;
+use megalodon::generator;
+use megalodon::megalodon::PostStatusInputOptions;
+use megalodon::{self, megalodon::UploadMediaInputOptions};
+
+use crate::{StdError, APP_USER_AGENT};
+
+const FEDI_ACCESS_TOKEN_ENV_VAR: &str = "FEDI_ACCESS_TOKEN";
+const FEDI_INSTANCE_ENV_VAR: &str = "FEDI_INSTANCE";
+
+pub async fn toot(text: &str, img: Option<Cow<'static, [u8]>>) -> StdError<()> {
+    let client = megalodon::generator(
+        megalodon::SNS::Pleroma,
+        std::env::var(FEDI_INSTANCE_ENV_VAR)
+            .unwrap_or_else(|_| panic!("{} env var not present", FEDI_ACCESS_TOKEN_ENV_VAR))
+            .into(),
+        Some(
+            std::env::var(FEDI_ACCESS_TOKEN_ENV_VAR)
+                .unwrap_or_else(|_| panic!("{} env var not present", FEDI_ACCESS_TOKEN_ENV_VAR))
+                .into(),
+        ),
+        Some(APP_USER_AGENT.into()),
+    );
+    let mut ops = PostStatusInputOptions::default();
+    if let Some(img) = img {
+        let media = client
+            .upload_media_bytes(
+                // TODO: get better at lifetimes
+                Box::leak(Box::new(img)),
+                Some(&UploadMediaInputOptions::default()),
+            )
+            .await?;
+        ops.media_ids = Some(vec![match media.json {
+            UploadMedia::Attachment(a) => a.id,
+            UploadMedia::AsyncAttachment(a) => a.id,
+        }]);
+    }
+    client.post_status(text.into(), Some(&ops)).await?;
+    Ok(())
+}
+
+pub async fn authorize_fedi() -> StdError<()> {
+    let url = std::env::var(FEDI_INSTANCE_ENV_VAR)
+        .unwrap_or_else(|_| panic!("{} env var not present", FEDI_ACCESS_TOKEN_ENV_VAR))
+        .into();
+    let client = generator(megalodon::SNS::Pleroma, url, None, None);
+    let options = megalodon::megalodon::AppInputOptions {
+        scopes: Some([String::from("read"), String::from("write")].to_vec()),
+        ..Default::default()
+    };
+
+    match client.register_app(String::from("iso7010"), &options).await {
+        Ok(app_data) => {
+            println!("{}", app_data.url.unwrap());
+            println!("Enter code:");
+            let mut code = String::new();
+            std::io::stdin().read_line(&mut code).ok();
+            match client
+                .fetch_access_token(
+                    app_data.client_id,
+                    app_data.client_secret,
+                    code.trim().to_string(),
+                    megalodon::default::NO_REDIRECT.to_string(),
+                )
+                .await
+            {
+                Ok(token_data) => {
+                    println!("token: {}", token_data.access_token);
+                    if let Some(refresh) = token_data.refresh_token {
+                        println!("refresh_token: {}", refresh);
+                    }
+                }
+                Err(err) => {
+                    panic!("{}", err);
+                }
+            }
+        }
+        Err(err) => {
+            panic!("{}", err);
+        }
+    }
+    Ok(())
+}

src/twitter.rs

@@ -54,7 +54,7 @@ impl TryInto<reqwest::Url> for TwitterEndpoint {
 
 pub enum PostData<'a> {
     Empty,
-    Multipart(reqwest::blocking::multipart::Form),
+    Multipart(reqwest::multipart::Form),
     Data(&'a [(&'a str, Cow<'a, str>)]),
 }
 
@@ -88,12 +88,12 @@ impl APIAction<'_> {
 }
 // Make an authed twitter API request
 #[instrument(skip(user_token), fields(url=url.to_string()))]
-pub fn twitter_api<'a>(
+pub async fn twitter_api<'a>(
     url: reqwest::Url,
-    user_token: Option<&oauth1::Token>,
-    action: APIAction,
+    user_token: Option<&oauth1::Token<'a>>,
+    action: APIAction<'a>,
     extra_oauth_params: &[(&str, &str)],
-) -> StdError<reqwest::blocking::Response> {
+) -> StdError<reqwest::Response> {
     let consumer_token = oauth1::Token::new(
         std::env::var(APP_TOKEN_ENV_VAR)?,
         std::env::var(APP_SECRET_ENV_VAR)?,
@@ -142,19 +142,19 @@ pub fn twitter_api<'a>(
         APIAction::Post(PostData::Multipart(form)) => client.post(url).multipart(form),
     };
     event!(Level::INFO, "Sending request");
-    let res = req.send()?;
+    let res = req.send().await?;
     if !res.status().is_success() {
         return Err(format!(
             "Got non-200 response: status {}, {}",
             res.status(),
-            res.text()?
+            res.text().await?
         )
         .into());
     }
     Ok(res)
 }
 
-pub fn do_authorize() -> StdError<()> {
+pub async fn do_authorize() -> StdError<()> {
     println!("Authorizing you lol!");
 
     // Oauth1 leg 1
@@ -163,8 +163,10 @@ pub fn do_authorize() -> StdError<()> {
         None,
         APIAction::Post(PostData::Empty),
         &[("oauth_callback", CB_URL)],
-    )?
-    .text()?;
+    )
+    .await?
+    .text()
+    .await?;
 
     let returned_params: HashMap<&str, &str> = res
         .split('&')
@@ -209,8 +211,10 @@ pub fn do_authorize() -> StdError<()> {
             Cow::Owned(oauth_verifier),
         )])),
         &[("oauth_token", returned_params["oauth_token"])],
-    )?
-    .text()?;
+    )
+    .await?
+    .text()
+    .await?;
     let returned_params: HashMap<&str, &str> = res
         .split('&')
         .map(|s| s.split('=').collect_tuple())
@@ -229,20 +233,24 @@ pub fn do_authorize() -> StdError<()> {
     Ok(())
 }
 
-fn upload_image(user_token: &oauth1::Token, img: Cow<'static, [u8]>) -> StdError<u64> {
-    let form = reqwest::blocking::multipart::Form::new()
-        .part("media", reqwest::blocking::multipart::Part::bytes(img));
+async fn upload_image<'a>(
+    user_token: &oauth1::Token<'a>,
+    img: Cow<'static, [u8]>,
+) -> StdError<u64> {
+    let form = reqwest::multipart::Form::new().part("media", reqwest::multipart::Part::bytes(img));
     let res: serde_json::Value = twitter_api(
         "https://upload.twitter.com/1.1/media/upload.json".try_into()?,
         Some(user_token),
         APIAction::Post(PostData::Multipart(form)),
         &[],
-    )?
-    .json()?;
+    )
+    .await?
+    .json()
+    .await?;
     Ok(res["media_id"].as_u64().ok_or("media_id not u64!")?)
 }
 
-pub fn tweet(text: &str, img: Option<Cow<'static, [u8]>>) -> StdError<()> {
+pub async fn tweet(text: &str, img: Option<Cow<'static, [u8]>>) -> StdError<()> {
     let user_token = oauth1::Token::new(
         std::env::var(USER_TOKEN_ENV_VAR)?,
         std::env::var(USER_SECRET_ENV_VAR)?,
@@ -253,8 +261,10 @@ pub fn tweet(text: &str, img: Option<Cow<'static, [u8]>>) -> StdError<()> {
         Some(&user_token),
         APIAction::Get,
         &[],
-    )?
-    .json()?;
+    )
+    .await?
+    .json()
+    .await?;
     println!(
         "Tweeting for user @{}, (id: {})",
         user["screen_name"], user["id"]
@@ -262,7 +272,7 @@ pub fn tweet(text: &str, img: Option<Cow<'static, [u8]>>) -> StdError<()> {
     let mut post_data = vec![("status", Cow::Borrowed(text))];
     if let Some(img) = img {
         println!("Uploading image...");
-        let img_id = upload_image(&user_token, img)?;
+        let img_id = upload_image(&user_token, img).await?;
         post_data.push(("media_ids", Cow::Owned(img_id.to_string())))
     }
     event!(Level::INFO, "Sending tweet...");
@@ -271,6 +281,7 @@ pub fn tweet(text: &str, img: Option<Cow<'static, [u8]>>) -> StdError<()> {
         Some(&user_token),
         APIAction::Post(PostData::Data(&post_data[0..])),
         &[],
-    )?;
+    )
+    .await?;
     Ok(())
 }

src/wiki.rs

@@ -14,7 +14,7 @@ fn extract_filename(filename: &str) -> Option<&str> {
 }
 
 // Scrape all images from the wikipedia page, returning a vec of title, filename pairs
-pub fn scrape_web() -> StdError<Vec<(String, String)>> {
+pub async fn scrape_web() -> StdError<Vec<(String, String)>> {
     event!(Level::INFO, "Scraping the wikipedia page for things");
     // Parse CSS selectors to scrape elements
     let gallerybox_sel =
@@ -27,8 +27,10 @@ pub fn scrape_web() -> StdError<Vec<(String, String)>> {
     event!(Level::INFO, "Fetching wiki page");
     let txt = client
         .get("https://en.wikipedia.org/wiki/ISO_7010")
-        .send()?
-        .text()?;
+        .send()
+        .await?
+        .text()
+        .await?;
     let page = scraper::Html::parse_document(txt.as_str());
     return Ok(page
         .select(&gallerybox_sel)
@@ -62,7 +64,7 @@ pub fn wiki_query_url(params: Vec<(&str, &str)>) -> StdError<Url> {
 // https://commons.wikimedia.org/w/api.php?action=query&format=json&list=categorymembers&cmtitle=Category:ISO_7010_safety_signs_(vector_drawings)&cmlimit=2
 
 #[instrument]
-pub fn get_files_in_category(category: &str) -> StdError<Vec<String>> {
+pub async fn get_files_in_category(category: &str) -> StdError<Vec<String>> {
     let client = get_client(None)?;
     let url = wiki_query_url(
         [
@@ -73,7 +75,12 @@ pub fn get_files_in_category(category: &str) -> StdError<Vec<String>> {
         ]
         .into(),
     )?;
-    let data = client.get(url).send()?.json::<serde_json::Value>()?;
+    let data = client
+        .get(url)
+        .send()
+        .await?
+        .json::<serde_json::Value>()
+        .await?;
     if data.get("continue").is_some() {
         // There are more results than are contained in one response, so now you need to implement
         // pagination. Have fun!
@@ -147,49 +154,54 @@ struct ExtMetaItem<T> {
     value: T,
 }
 
-pub fn get_file_metadata(files: &[&str]) -> StdError<Vec<FileMeta>> {
+pub async fn get_file_metadata(files: &[&str]) -> StdError<Vec<FileMeta>> {
     let client = get_client(None)?;
     // Api only lets us do 50 files in one request
-    Ok(files
-        .chunks(50)
-        .flat_map(|files_chunk| {
-            let url = wiki_query_url(
-                [
-                    ("titles", files_chunk.join("|").as_ref()),
-                    ("prop", "imageinfo"),
-                    (
-                        "iiprop",
-                        "timestamp|url|size|mime|mediatype|extmetadata|user",
-                    ),
-                    // Get metadata for as many revisions of the file as we are allowed. We're unlikely to encounter a file with >500 revisions.
-                    ("iilimit", "500"),
-                    (
-                        "iiextmetadatafilter",
-                        "ObjectName|LicenseShortName|AttributionRequired|LicenseUrl",
-                    ),
-                ]
-                .into(),
-            )
-            .unwrap();
-            let data = client.get(url).send().unwrap().json::<Query>().unwrap();
+    let urls = files.chunks(50).map(|files_chunk| {
+        wiki_query_url(
+            [
+                ("titles", files_chunk.join("|").as_ref()),
+                ("prop", "imageinfo"),
+                (
+                    "iiprop",
+                    "timestamp|url|size|mime|mediatype|extmetadata|user",
+                ),
+                // Get metadata for as many revisions of the file as we are allowed. We're unlikely to encounter a file with >500 revisions.
+                ("iilimit", "500"),
+                (
+                    "iiextmetadatafilter",
+                    "ObjectName|LicenseShortName|AttributionRequired|LicenseUrl",
+                ),
+            ]
+            .into(),
+        )
+        .unwrap()
+    });
 
-            data.query
-                .pages
-                .values()
-                .map(|page| {
-                    let latest = page.imageinfo.first().unwrap();
-                    let oldest = page.imageinfo.last().unwrap();
-                    FileMeta {
-                        url: latest.url.clone(),
-                        name: latest.extmetadata.object_name.value.clone(),
-                        html_url: latest.descriptionurl.clone(),
-                        author: oldest.user.clone(),
-                        license_short_name: latest.extmetadata.license_short_name.value.clone(),
-                        license_url: latest.extmetadata.license_url.clone().map(|i| i.value),
-                        attribution_required: latest.extmetadata.attribution_required.value.clone(),
-                    }
-                })
-                .collect::<Vec<_>>()
-        })
-        .collect())
+    let mut meta = Vec::new();
+    for u in urls {
+        let data = client
+            .get(u)
+            .send()
+            .await
+            .unwrap()
+            .json::<Query>()
+            .await
+            .unwrap();
+
+        meta.extend(data.query.pages.values().map(|page| {
+            let latest = page.imageinfo.first().unwrap();
+            let oldest = page.imageinfo.last().unwrap();
+            FileMeta {
+                url: latest.url.clone(),
+                name: latest.extmetadata.object_name.value.clone(),
+                html_url: latest.descriptionurl.clone(),
+                author: oldest.user.clone(),
+                license_short_name: latest.extmetadata.license_short_name.value.clone(),
+                license_url: latest.extmetadata.license_url.clone().map(|i| i.value),
+                attribution_required: latest.extmetadata.attribution_required.value.clone(),
+            }
+        }))
+    }
+    Ok(meta)
 }