Add command scrobble_url for scrobbling from Last.fm album URL

Cargo.toml

@@ -20,7 +20,8 @@ structopt = { version = "0.3.26", features = ["color"] }
 thiserror = "1.0.43"
 time = { version = "0.3.23", features = ["macros", "formatting", "local-offset"] }
 toml = "0.7.6"
-urlencoding = "2.1.2"
+url = "2.4.1"
+urlencoding = "2.1.3"
 xmltree = "0.10.3"
 
 [target.'cfg(all(unix, target_env = "musl"))'.dependencies]

src/main.rs

@@ -4,7 +4,7 @@ mod scrobbler;
 mod utils;
 
 use crate::auth::authenticate;
-use crate::scrobbler::{scrobble_album, scrobble_track};
+use crate::scrobbler::{scrobble_album, scrobble_track, scrobble_url};
 use anyhow::Context;
 use env_logger::Env;
 use log::{error, info};
@@ -35,6 +35,20 @@ enum CliArgs {
         start: Option<String>,
     },
 
+    ScrobbleUrl {
+        /// Last.fm album page URL
+        #[structopt(long)]
+        url: String,
+
+        /// Dry run mode (no writes done)
+        #[structopt(short, long)]
+        dryrun: bool,
+
+        /// Start time
+        #[structopt(long)]
+        start: Option<String>,
+    },
+
     Auth {
         /// API key
         #[structopt(long)]
@@ -85,6 +99,9 @@ fn run(cli_args: CliArgs) -> anyhow::Result<()> {
         CliArgs::Scrobble { .. } => {
             anyhow::bail!("Wrong arguments");
         }
+        CliArgs::ScrobbleUrl { url, dryrun, start } => {
+            scrobble_url(url, dryrun, start_to_duration(start)?)
+        }
     }
 }
 

src/scrobbler.rs

@@ -1,11 +1,12 @@
 use crate::auth::load_auth_config;
 use crate::lastfmapi::{Album, ApiError, LastfmApi, LastfmApiBuilder};
 use crate::utils::now_local;
-use anyhow::anyhow;
+use anyhow::{anyhow, Context};
 use log::{debug, info, warn};
 use time::ext::NumericalDuration;
 use time::macros::format_description;
 use time::Duration;
+use url::Url;
 
 /// Scrobble all tracks in an album with proper timestamps
 fn scrobble_timeline(
@@ -105,3 +106,33 @@ pub fn scrobble_track(
         Err(e) => Err(e.into()),
     }
 }
+
+/// Scrobble a whole album identified by Last.fm webpage URL
+pub fn scrobble_url(
+    url: String,
+    dryrun: bool,
+    start: Option<Duration>,
+) -> Result<(), anyhow::Error> {
+    let expected_format = "https://www.last.fm/music/Artist/Album+Name";
+
+    let parsed_url = Url::parse(&url)?;
+    debug!("Parsed url to: {:?}", &parsed_url);
+
+    let path = &parsed_url
+        .path_segments()
+        .context("Cannot parse path")?
+        .collect::<Vec<&str>>();
+    if !(parsed_url.host_str() == Some("last.fm") || parsed_url.host_str() == Some("www.last.fm")) {
+        anyhow::bail!("URL is not from last.fm");
+    }
+    if path.len() < 3 || path[0] != "music" {
+        anyhow::bail!("URL must be in format {}", expected_format);
+    }
+    // Additionally replace plus (not %20) with space
+    let artist = urlencoding::decode(path[1])?.replace('+', " ");
+    let album = urlencoding::decode(path[2])?.replace('+', " ");
+
+    info!("Extracted artist {} and album {}", &artist, &album);
+
+    scrobble_album(artist, album, dryrun, start)
+}