Download all supported mods for sides

src/main.rs

@@ -6,6 +6,7 @@ mod resolver;
 use clap::{Parser, Subcommand};
 use mod_meta::{ModMeta, ModProvider};
 use modpack::ModpackMeta;
+use providers::DownloadSide;
 use std::{error::Error, path::PathBuf};
 
 /// A Minecraft Modpack Manager
@@ -78,6 +79,9 @@ enum Commands {
     Download {
         /// Mods directory
         mods_dir: PathBuf,
+        /// Side to download for
+        #[arg(long, short, default_value_t = DownloadSide::Both)]
+        side: DownloadSide,
     },
 }
 
@@ -183,11 +187,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
                     panic!("Reverted modpack meta:\n{}", e);
                 };
 
-                match resolver::PinnedPackMeta::load_from_current_directory(
-                    !locked,
-                )
-                .await
-                {
+                match resolver::PinnedPackMeta::load_from_current_directory(!locked).await {
                     Ok(mut modpack_lock) => {
                         let remove_result = modpack_lock.remove_mod(&mod_meta.name, &modpack_meta);
                         if let Err(e) = remove_result {
@@ -241,10 +241,9 @@ async fn main() -> Result<(), Box<dyn Error>> {
                     }
                 };
             }
-            Commands::Download { mods_dir } => {
-                let pack_lock =
-                    resolver::PinnedPackMeta::load_from_current_directory(true).await?;
-                pack_lock.download_mods(&mods_dir).await?;
+            Commands::Download { mods_dir, side } => {
+                let pack_lock = resolver::PinnedPackMeta::load_from_current_directory(true).await?;
+                pack_lock.download_mods(&mods_dir, side).await?;
                 println!("Mods updated");
             }
         }

src/providers/mod.rs

@@ -1,14 +1,58 @@
-use std::{collections::HashSet, path::PathBuf};
-use serde::{Deserialize, Serialize};
 use crate::mod_meta::ModMeta;
+use serde::{Deserialize, Serialize};
+use std::{collections::HashSet, path::PathBuf, str::FromStr};
 
 pub mod modrinth;
 pub mod raw;
 
 #[derive(Serialize, Deserialize, Clone)]
 pub enum FileSource {
-    Download { url: String, sha1: String, sha512: String, filename: String},
-    Local { path: PathBuf, sha1: String, sha512: String, filename: String },
+    Download {
+        url: String,
+        sha1: String,
+        sha512: String,
+        filename: String,
+    },
+    Local {
+        path: PathBuf,
+        sha1: String,
+        sha512: String,
+        filename: String,
+    },
+}
+
+#[derive(Debug, PartialEq, Eq, Clone, Copy)]
+pub enum DownloadSide {
+    Both,
+    Server,
+    Client,
+}
+
+impl FromStr for DownloadSide {
+    type Err = String;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.to_ascii_lowercase().as_str() {
+            "both" => Ok(DownloadSide::Both),
+            "client" => Ok(DownloadSide::Client),
+            "server" => Ok(DownloadSide::Server),
+            _ => Err(format!(
+                "Invalid side {}. Expected one of: both, server, clide",
+                s
+            )),
+        }
+    }
+}
+
+impl ToString for DownloadSide {
+    fn to_string(&self) -> String {
+        match self {
+            DownloadSide::Both => "Both",
+            DownloadSide::Server => "Server",
+            DownloadSide::Client => "Client",
+        }
+        .into()
+    }
 }
 
 #[derive(Serialize, Deserialize, Clone)]
@@ -22,5 +66,5 @@ pub struct PinnedMod {
     /// Server side
     pub server_side: bool,
     /// Required on client side
-    pub client_side: bool
+    pub client_side: bool,
 }

src/providers/modrinth.rs

@@ -184,8 +184,8 @@ impl Modrinth {
             } else {
                 None
             },
-            server_side: project.server_side != "optional",
-            client_side: project.client_side != "optional"
+            server_side: project.server_side != "unsupported",
+            client_side: project.client_side != "unsupported"
         })
     }
 

src/resolver.rs

@@ -10,7 +10,7 @@ use std::{
 use crate::{
     mod_meta::{ModMeta, ModProvider},
     modpack::ModpackMeta,
-    providers::{modrinth::Modrinth, PinnedMod},
+    providers::{modrinth::Modrinth, DownloadSide, PinnedMod},
 };
 
 const MODPACK_LOCK_FILENAME: &str = "modpack.lock";
@@ -31,7 +31,11 @@ impl PinnedPackMeta {
     }
 
     /// Clears out anything not in the mods list, and then downloads anything in the mods list not present
-    pub async fn download_mods(&self, mods_dir: &PathBuf) -> Result<(), Box<dyn Error>> {
+    pub async fn download_mods(
+        &self,
+        mods_dir: &PathBuf,
+        download_side: DownloadSide,
+    ) -> Result<(), Box<dyn Error>> {
         let files = std::fs::read_dir(mods_dir)?;
         for file in files.into_iter() {
             let file = file?;
@@ -41,7 +45,7 @@ impl PinnedPackMeta {
                     file.file_name()
                 );
                 let filename = file.file_name();
-                if !self.file_is_pinned(&filename) {
+                if !self.file_is_pinned(&filename, download_side) {
                     println!(
                         "Deleting file {:#?} as it is not in the pinned mods",
                         filename
@@ -51,7 +55,11 @@ impl PinnedPackMeta {
             }
         }
 
-        for (_, pinned_mod) in self.mods.iter() {
+        for (_, pinned_mod) in self.mods.iter().filter(|m| {
+            download_side == DownloadSide::Both
+                || download_side == DownloadSide::Client && m.1.client_side
+                || download_side == DownloadSide::Server && m.1.server_side
+        }) {
             for filesource in pinned_mod.source.iter() {
                 match filesource {
                     crate::providers::FileSource::Download {
@@ -97,8 +105,12 @@ impl PinnedPackMeta {
         Ok(())
     }
 
-    pub fn file_is_pinned(&self, file_name: &OsStr) -> bool {
-        for (pinned_mod_name, pinned_mod) in self.mods.iter() {
+    pub fn file_is_pinned(&self, file_name: &OsStr, mod_side: DownloadSide) -> bool {
+        for (_, pinned_mod) in self.mods.iter().filter(|m| {
+            mod_side == DownloadSide::Both
+                || mod_side == DownloadSide::Client && m.1.client_side
+                || mod_side == DownloadSide::Server && m.1.server_side
+        }) {
             for filesource in pinned_mod.source.iter() {
                 match filesource {
                     crate::providers::FileSource::Download {