[#33] Better end-of-sync output

Resolves #33

src/config/schema.rs

@@ -31,12 +31,12 @@ pub struct ConfigAsset {
     /// Defaults to `repo` if not specified
     pub exe_name: Option<String>,
 
-    /// Name of the specific asset to download
-    pub asset_name: AssetName,
-
     /// Release tag to download
     /// Defaults to the latest release
     pub tag: Option<String>,
+
+    /// Name of the specific asset to download
+    pub asset_name: AssetName,
 }
 
 impl Config {

src/infra.rs

@@ -0,0 +1 @@
+pub mod client;

src/infra/client.rs

@@ -0,0 +1,103 @@
+use std::env;
+use std::error::Error;
+use std::io::Read;
+
+use crate::model::release::{Asset, Release};
+
+/// GitHub API client to handle all API requests
+pub struct Client {
+    pub owner: String,
+    pub repo: String,
+    pub version: String,
+}
+
+impl Client {
+    fn release_url(&self) -> String {
+        format!(
+            "https://api.github.com/repos/{owner}/{repo}/releases/{version}",
+            owner = self.owner,
+            repo = self.repo,
+            version = self.version,
+        )
+    }
+
+    fn asset_url(&self, asset_id: u32) -> String {
+        format!(
+            "https://api.github.com/repos/{owner}/{repo}/releases/assets/{asset_id}",
+            owner = self.owner,
+            repo = self.repo,
+            asset_id = asset_id
+        )
+    }
+
+    pub fn fetch_release_info(&self) -> Result<Release, Box<dyn Error>> {
+        let release_url = self.release_url();
+
+        let req = add_auth_header(
+            ureq::get(&release_url)
+                .set("Accept", "application/vnd.github+json")
+                .set("User-Agent", "chshersh/tool-sync-0.2.0"),
+        );
+
+        let release: Release = req.call()?.into_json()?;
+
+        Ok(release)
+    }
+
+    pub fn get_asset_stream(
+        &self,
+        asset: &Asset,
+    ) -> Result<Box<dyn Read + Send + Sync>, ureq::Error> {
+        let asset_url = self.asset_url(asset.id);
+
+        let req = add_auth_header(
+            ureq::get(&asset_url)
+                .set("Accept", "application/octet-stream")
+                .set("User-Agent", "chshersh/tool-sync-0.2.0"),
+        );
+
+        Ok(req.call()?.into_reader())
+    }
+}
+
+fn add_auth_header(req: ureq::Request) -> ureq::Request {
+    match env::var("GITHUB_TOKEN") {
+        Err(_) => req,
+        Ok(token) => req.set("Authorization", &format!("token {}", token)),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    use crate::model::tool::ToolInfoTag;
+
+    #[test]
+    fn release_url_with_latest_tag_is_correct() {
+        let client = Client {
+            owner: String::from("OWNER"),
+            repo: String::from("REPO"),
+            version: ToolInfoTag::Latest.to_str_version(),
+        };
+
+        assert_eq!(
+            client.release_url(),
+            "https://api.github.com/repos/OWNER/REPO/releases/latest"
+        );
+    }
+
+    #[test]
+    fn release_url_with_specific_tag_is_correct() {
+        let client = Client {
+            owner: String::from("OWNER"),
+            repo: String::from("REPO"),
+            version: ToolInfoTag::Specific(String::from("SPECIFIC_TAG")).to_str_version(),
+        };
+
+        assert_eq!(
+            client.release_url(),
+            "https://api.github.com/repos/OWNER/REPO/releases/tags/SPECIFIC_TAG"
+        );
+    }
+}

src/lib.rs

@@ -1,5 +1,6 @@
 mod config;
 mod err;
+mod infra;
 mod model;
 mod sync;
 

src/model/release.rs

@@ -12,3 +12,13 @@ pub struct Asset {
     pub name: String,
     pub size: u64,
 }
+
+impl From<&Asset> for Asset {
+    fn from(other: &Asset) -> Self {
+        Asset {
+            id: other.id,
+            name: other.name.clone(),
+            size: other.size,
+        }
+    }
+}

src/model/tool.rs

@@ -1,3 +1,5 @@
+use super::release::Asset;
+use crate::infra::client::Client;
 use crate::model::asset_name::AssetName;
 
 #[derive(Debug, PartialEq, Eq)]
@@ -59,9 +61,49 @@ pub struct ToolInfo {
     /// Executable name inside the .tar.gz or .zip archive
     pub exe_name: String,
 
+    /// Version tag
+    pub tag: ToolInfoTag,
+
     /// Asset name depending on the OS
     pub asset_name: AssetName,
+}
 
-    /// Version tag
-    pub tag: ToolInfoTag,
+impl ToolInfo {
+    pub fn select_asset(&self, assets: &[Asset]) -> Result<Asset, String> {
+        match self.asset_name.get_name_by_os() {
+            None => Err(String::from(
+                "Don't know the asset name for this OS: specify it explicitly in the config",
+            )),
+            Some(asset_name) => {
+                let asset = assets.iter().find(|&asset| asset.name.contains(asset_name));
+
+                match asset {
+                    None => Err(format!("No asset matching name: {}", asset_name)),
+                    Some(asset) => Ok(Asset::from(asset)),
+                }
+            }
+        }
+    }
+}
+
+/// All information about the tool, needed to download its asset after fetching
+/// the release and asset info. Values of this type are created in
+/// `src/sync/prefetch.rs` from `ToolInfo`.
+pub struct ToolAsset {
+    /// Name of the tool (e.g. "ripgrep" or "exa")
+    pub tool_name: String,
+
+    /// Specific git tag (e.g. "v3.4.2")
+    /// This value is the result of `ToolInfoTag::to_str_version` so "latest"
+    /// **can't** be here.
+    pub tag: String,
+
+    /// Executable name inside the .tar.gz or .zip archive
+    pub exe_name: String,
+
+    /// The selected asset
+    pub asset: Asset,
+
+    /// GitHub API client that produces the stream for downloading the asset
+    pub client: Client,
 }

src/sync.rs

@@ -3,16 +3,29 @@ mod configure;
 mod db;
 mod download;
 mod install;
+mod prefetch;
 mod progress;
 
+use console::Emoji;
+
 use crate::config::schema::Config;
-use crate::sync::install::Installer;
-use crate::sync::progress::SyncProgress;
+
+use self::install::Installer;
+use self::prefetch::prefetch;
+use self::progress::SyncProgress;
+use self::progress::ToolPair;
 
 pub fn sync(config: Config) {
     if config.tools.is_empty() {
-        eprintln!(
-            r#"No tools to sync. Have you configured 'tool-sync'?
+        no_tools_message()
+    } else {
+        sync_tools(config)
+    }
+}
+
+fn no_tools_message() {
+    eprintln!(
+        r#"No tools to sync. Have you configured 'tool-sync'?
 
 Put the following into the $HOME/.tool.toml file for the simplest configuration:
 
@@ -27,21 +40,34 @@ Put the following into the $HOME/.tool.toml file for the simplest configuration:
 For more details, refer to the official documentation:
 
     * https://github.com/chshersh/tool-sync#tool-sync"#
-        );
-    } else {
-        let store_directory = config.ensure_store_directory();
-
-        let tools: Vec<String> = config.tools.keys().cloned().collect();
-        let tags: Vec<String> = config
-            .tools
-            .values()
-            .map(|config_asset| config_asset.tag.clone().unwrap_or_else(|| "latest".into()))
-            .collect();
-        let sync_progress = SyncProgress::new(tools, tags);
-        let installer = Installer::mk(store_directory, sync_progress);
-
-        for (tool_name, config_asset) in config.tools.iter() {
-            installer.install(tool_name, config_asset);
+    );
+}
+
+const DONE: Emoji<'_, '_> = Emoji("✨ ", "* ");
+
+fn sync_tools(config: Config) {
+    let store_directory = config.ensure_store_directory();
+    let tool_assets = prefetch(config.tools);
+
+    let tool_pairs = tool_assets
+        .iter()
+        .map(|ta| ToolPair {
+            name: &ta.tool_name,
+            tag: &ta.tag,
+        })
+        .collect();
+
+    let sync_progress = SyncProgress::new(tool_pairs);
+    let installer = Installer::mk(store_directory, sync_progress);
+
+    let mut installed_tools: u64 = 0;
+
+    for tool_asset in tool_assets {
+        let is_successs = installer.install(tool_asset);
+        if is_successs {
+            installed_tools += 1
         }
     }
+
+    eprintln!("{} Successfully installed {} tools!", DONE, installed_tools);
 }