feat(install): install feature, installing mods into mods directory

Cargo.lock

@@ -517,6 +517,12 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
 [[package]]
 name = "http"
 version = "1.5.0"
@@ -888,10 +894,12 @@ dependencies = [
  "colored",
  "dialoguer",
  "futures-util",
+ "hex",
  "indicatif",
  "reqwest",
  "serde",
  "sha1",
+ "sha2",
  "terminal_size",
  "textwrap",
  "tokio",
@@ -1412,6 +1420,17 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "sha2"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "446ba717509524cb3f22f17ecc096f10f4822d76ab5c0b9822c5f9c284e825f4"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
 [[package]]
 name = "shell-words"
 version = "1.1.1"

Cargo.toml

@@ -8,10 +8,12 @@ clap = { version = "4.6.6", features = ["derive"] }
 colored = "3.1.1"
 dialoguer = { version = "0.12.0", features = ["fuzzy-select"] }
 futures-util = "0.3.34"
+hex = "0.4.3"
 indicatif = "0.18.6"
 reqwest = { version = "0.13.4", features = ["json", "stream", "query"] }
 serde = { version = "1.0.229", features = ["derive"] }
 sha1 = "0.11.0"
+sha2 = "0.11.0"
 terminal_size = "0.4.4"
 textwrap = "0.16.2"
 tokio = { version = "1.53.1", features = ["full"] }

src/commands/install.rs

@@ -0,0 +1,108 @@
+use std::error::Error;
+
+use futures_util::StreamExt;
+use tokio::io::AsyncWriteExt;
+
+use crate::{
+    models::{
+        config::Config,
+        install::{InstallQueryParams, InstallResult},
+    },
+    utils::{verify_sha512, with_progressbar, with_spinner},
+};
+
+pub struct Install {
+    mods: Vec<String>,
+}
+
+impl Install {
+    const BASE_URL: &str = "https://api.modrinth.com/v2";
+
+    pub fn new(mods: Vec<String>) -> Self {
+        Install { mods }
+    }
+
+    pub async fn run(&self) -> Result<(), Box<dyn Error>> {
+        let file_res = tokio::fs::read_to_string("mcsm.toml").await;
+        if file_res.is_err() {
+            return Err("current directory is not a mcsm project".into());
+        }
+        let config: Config = toml::from_str(&file_res.unwrap())?;
+
+        if config.server.loader == "Vanilla" {
+            return Err("cannot search for mods on Vanilla server".into());
+        }
+
+        if std::env::set_current_dir("mods").is_err() {
+            return Err("mods folder not found".into());
+        }
+
+        let client = reqwest::Client::new();
+
+        for mod_name in &self.mods {
+            let url = format!("{}/project/{}/version", Self::BASE_URL, mod_name);
+
+            let params = InstallQueryParams {
+                loaders: format!(r#"["{}"]"#, config.server.loader).to_lowercase(),
+                game_versions: format!(r#"["{}"]"#, config.server.version),
+            };
+
+            let install_result: Vec<InstallResult> = with_spinner(
+                format!("fetching {}", mod_name).as_str(),
+                format!("fetched {}", mod_name).as_str(),
+                || async {
+                    let res = client.get(url).query(&params).send().await;
+
+                    if res.is_err() {
+                        return Err(format!(r#"mod "{}" not found"#, mod_name).into());
+                    }
+
+                    Ok(res.unwrap().json().await?)
+                },
+            )
+            .await?;
+
+            let file = install_result.first().unwrap().files.first().unwrap();
+            with_progressbar(
+                format!("downloading {}", mod_name).as_str(),
+                format!("downloaded {}", mod_name).as_str(),
+                file.size,
+                |pb| async move {
+                    let mod_bytes = reqwest::get(&file.url).await?;
+                    let mut file = tokio::fs::File::create(&file.filename).await?;
+                    let mut stream = mod_bytes.bytes_stream();
+
+                    while let Some(chunk) = stream.next().await {
+                        let chunk = chunk?;
+                        file.write_all(&chunk).await?;
+                        pb.inc(chunk.len() as u64);
+                    }
+
+                    Ok(())
+                },
+            )
+            .await?;
+
+            with_spinner("verifying sha512 hash", "sha512 hash verified", || async {
+                let data = tokio::fs::read(&file.filename).await?;
+                let verified = verify_sha512(&data, &file.hashes.sha512);
+
+                if !verified {
+                    tokio::fs::remove_file("server.jar").await?;
+                    return Err("sha1 verifaction failed for downloaded file".into());
+                }
+
+                Ok(())
+            })
+            .await?;
+            println!();
+        }
+
+        println!(
+            "{} finished installing mods",
+            dialoguer::console::style("✔").green()
+        );
+
+        Ok(())
+    }
+}

src/commands/mod.rs

@@ -1,2 +1,3 @@
 pub mod create;
+pub mod install;
 pub mod search;

src/main.rs

@@ -2,7 +2,7 @@ mod commands;
 mod models;
 mod utils;
 
-use crate::commands::{create::Create, search::Search};
+use crate::commands::{create::Create, install::Install, search::Search};
 use clap::{
     Parser, Subcommand,
     builder::styling::{self},
@@ -53,13 +53,13 @@ enum Commands {
         #[arg(long)]
         show_alphas: bool,
     },
-    
+
     /// Search for mods on modrinth for project in current directory
     /// automticallly filters mod loader, minecraft version from config file
     Search {
         /// Search term to look up, e.g. project name or keyword.
         query: String,
-        
+
         /// Number of results to skip before returning matches.
         #[arg(long)]
         offset: Option<u32>,
@@ -68,6 +68,13 @@ enum Commands {
         #[arg(long, value_parser = clap::value_parser!(u32).range(1..=100))]
         limit: Option<u32>,
     },
+
+    /// Install mods from modrinth for project in current directory
+    Install {
+        /// List of mods to install
+        #[arg(trailing_var_arg = true)]
+        mods: Vec<String>,
+    },
 }
 
 #[tokio::main]
@@ -101,10 +108,18 @@ async fn main() -> Result<(), Box<dyn Error>> {
             let config = create.download_server().await?;
             create.save_config(config).await?;
         }
-        Commands::Search { query, offset, limit } => {
+        Commands::Search {
+            query,
+            offset,
+            limit,
+        } => {
             let search = Search::new(query, offset, limit);
             search.run().await?;
         }
+        Commands::Install { mods } => {
+            let install = Install::new(mods);
+            install.run().await?;
+        }
     }
 
     Ok(())

src/models/install.rs

@@ -0,0 +1,26 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize)]
+pub struct InstallQueryParams {
+    pub loaders: String,
+    pub game_versions: String,
+}
+
+#[derive(Deserialize)]
+pub struct InstallResult {
+    pub version_number: String,
+    pub files: Vec<InstallFile>,
+}
+
+#[derive(Deserialize)]
+pub struct InstallFile {
+    pub hashes: InstallHashes,
+    pub url: String,
+    pub filename: String,
+    pub size: u64,
+}
+
+#[derive(Deserialize)]
+pub struct InstallHashes {
+    pub sha512: String,
+}

src/models/mod.rs

@@ -1,4 +1,5 @@
 pub mod config;
 pub mod fabric;
+pub mod install;
 pub mod search;
 pub mod vanilla;