Refactor

crunchy-cli-core/src/download/command.rs

@@ -0,0 +1,151 @@
+use crate::download::filter::DownloadFilter;
+use crate::utils::context::Context;
+use crate::utils::ffmpeg::FFmpegPreset;
+use crate::utils::filter::Filter;
+use crate::utils::format::formats_visual_output;
+use crate::utils::log::progress;
+use crate::utils::os::{free_file, has_ffmpeg};
+use crate::utils::parse::parse_url;
+use crate::Execute;
+use anyhow::bail;
+use anyhow::Result;
+use crunchyroll_rs::media::Resolution;
+use crunchyroll_rs::Locale;
+use log::{debug, warn};
+use std::path::Path;
+
+#[derive(Clone, Debug, clap::Parser)]
+#[clap(about = "Download a video")]
+#[command(arg_required_else_help(true))]
+pub struct Download {
+    #[arg(help = format!("Audio language. Can only be used if the provided url(s) point to a series. \
+    Available languages are: {}", Locale::all().into_iter().map(|l| l.to_string()).collect::<Vec<String>>().join(", ")))]
+    #[arg(long_help = format!("Audio language. Can only be used if the provided url(s) point to a series. \
+    Available languages are:\n{}", Locale::all().into_iter().map(|l| format!("{:<6} → {}", l.to_string(), l.to_human_readable())).collect::<Vec<String>>().join("\n  ")))]
+    #[arg(short, long, default_value_t = crate::utils::locale::system_locale())]
+    pub(crate) audio: Locale,
+    #[arg(help = format!("Subtitle language. Available languages are: {}", Locale::all().into_iter().map(|l| l.to_string()).collect::<Vec<String>>().join(", ")))]
+    #[arg(long_help = format!("Subtitle language. If set, the subtitle will be burned into the video and cannot be disabled. \
+    Available languages are: {}", Locale::all().into_iter().map(|l| l.to_string()).collect::<Vec<String>>().join(", ")))]
+    #[arg(short, long)]
+    pub(crate) subtitle: Option<Locale>,
+
+    #[arg(help = "Name of the output file")]
+    #[arg(long_help = "Name of the output file.\
+    If you use one of the following pattern they will get replaced:\n  \
+      {title}                   → Title of the video\n  \
+      {series_name}             → Name of the series\n  \
+      {season_name}             → Name of the season\n  \
+      {audio}                   → Audio language of the video\n  \
+      {resolution}              → Resolution of the video\n  \
+      {season_number}           → Number of the season\n  \
+      {episode_number}          → Number of the episode\n  \
+      {relative_episode_number} → Number of the episode relative to its season\
+      {series_id}               → ID of the series\n  \
+      {season_id}               → ID of the season\n  \
+      {episode_id}              → ID of the episode")]
+    #[arg(short, long, default_value = "{title}.mp4")]
+    pub(crate) output: String,
+
+    #[arg(help = "Video resolution")]
+    #[arg(long_help = "The video resolution.\
+    Can either be specified via the pixels (e.g. 1920x1080), the abbreviation for pixels (e.g. 1080p) or 'common-use' words (e.g. best). \
+    Specifying the exact pixels is not recommended, use one of the other options instead. \
+    Crunchyroll let you choose the quality with pixel abbreviation on their clients, so you might be already familiar with the available options. \
+    The available common-use words are 'best' (choose the best resolution available) and 'worst' (worst resolution available)")]
+    #[arg(short, long, default_value = "best")]
+    #[arg(value_parser = crate::utils::clap::clap_parse_resolution)]
+    pub(crate) resolution: Resolution,
+
+    #[arg(help = format!("Presets for video converting. Can be used multiple times. \
+    Available presets: \n  {}", FFmpegPreset::available_matches_human_readable().join("\n  ")))]
+    #[arg(long_help = format!("Presets for video converting. Can be used multiple times. \
+    Generally used to minify the file size with keeping (nearly) the same quality. \
+    It is recommended to only use this if you download videos with high resolutions since low resolution videos tend to result in a larger file with any of the provided presets. \
+    Available presets: \n  {}", FFmpegPreset::available_matches_human_readable().join("\n  ")))]
+    #[arg(long)]
+    #[arg(value_parser = FFmpegPreset::parse)]
+    pub(crate) ffmpeg_preset: Option<FFmpegPreset>,
+
+    #[arg(help = "Skip files which are already existing")]
+    #[arg(long, default_value_t = false)]
+    pub(crate) skip_existing: bool,
+
+    #[arg(help = "Url(s) to Crunchyroll episodes or series")]
+    pub(crate) urls: Vec<String>,
+}
+
+#[async_trait::async_trait(?Send)]
+impl Execute for Download {
+    fn pre_check(&mut self) -> Result<()> {
+        if !has_ffmpeg() {
+            bail!("FFmpeg is needed to run this command")
+        } else if Path::new(&self.output)
+            .extension()
+            .unwrap_or_default()
+            .is_empty()
+            && self.output != "-"
+        {
+            bail!("No file extension found. Please specify a file extension (via `-o`) for the output file")
+        }
+
+        if self.subtitle.is_some() {
+            if let Some(ext) = Path::new(&self.output).extension() {
+                if ext.to_string_lossy() != "mp4" {
+                    warn!("Detected a non mp4 output container. Adding subtitles may take a while")
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    async fn execute(self, ctx: Context) -> Result<()> {
+        let mut parsed_urls = vec![];
+
+        for (i, url) in self.urls.clone().into_iter().enumerate() {
+            let progress_handler = progress!("Parsing url {}", i + 1);
+            match parse_url(&ctx.crunchy, url.clone(), true).await {
+                Ok((media_collection, url_filter)) => {
+                    progress_handler.stop(format!("Parsed url {}", i + 1));
+                    parsed_urls.push((media_collection, url_filter))
+                }
+                Err(e) => bail!("url {} could not be parsed: {}", url, e),
+            };
+        }
+
+        for (i, (media_collection, url_filter)) in parsed_urls.into_iter().enumerate() {
+            let progress_handler = progress!("Fetching series details");
+            let download_formats = DownloadFilter::new(url_filter, self.clone())
+                .visit(media_collection)
+                .await?;
+
+            if download_formats.is_empty() {
+                progress_handler.stop(format!("Skipping url {} (no matching videos found)", i + 1));
+                continue;
+            }
+            progress_handler.stop(format!("Loaded series information for url {}", i + 1));
+
+            formats_visual_output(download_formats.iter().map(|(_, f)| f).collect());
+
+            for (downloader, format) in download_formats {
+                let formatted_path = format.format_path((&self.output).into(), true);
+                let (path, changed) = free_file(formatted_path.clone());
+
+                if changed && self.skip_existing {
+                    debug!(
+                        "Skipping already existing file '{}'",
+                        formatted_path.to_string_lossy()
+                    );
+                    continue;
+                }
+
+                format.visual_output(&path);
+
+                downloader.download(&ctx, &path).await?
+            }
+        }
+
+        Ok(())
+    }
+}