feat: Add initial skeleton for ModsView (#27)

* feat: Backend code to get list of installed mods

For now simply parses `enabledmods.json`.
Note that this file will not be up-to-date if the user just installed a
mod but hasn't launched Northstar yet.

* feat: Empty skeleton page for ModsView

Will be populated later with list of installed mods

* chore: Remove leftover print statement

2 files changed, 48 insertions, 3 deletions

diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 8a97a108..84920727 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -26,6 +26,12 @@ pub struct GameInstall {
     pub install_type: InstallType,
 }
 
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct NorthstarMod {
+    pub name: String,
+    pub enabled: bool,
+}
+
 /// Check version number of a mod
 pub fn check_mod_version_number(path_to_mod_folder: String) -> Result<String, anyhow::Error> {
     // println!("{}", format!("{}/mod.json", path_to_mod_folder));
@@ -471,3 +477,36 @@ pub fn set_mod_enabled_status(
 
     Ok(())
 }
+
+/// Gets list of installed mods and their properties
+/// - name
+/// - is enabled?
+pub fn get_installed_mods(game_install: GameInstall) -> Result<Vec<NorthstarMod>, String> {
+    let enabled_mods_json_path = format!("{}/R2Northstar/enabledmods.json", game_install.game_path);
+    // Open file
+    let data = match std::fs::read_to_string(enabled_mods_json_path) {
+        Ok(data) => data,
+        Err(err) => return Err(err.to_string()),
+    };
+    // Check if valid JSON and parse
+    let res: serde_json::Value = match serde_json::from_str(&data) {
+        Ok(res) => res,
+        Err(err) => return Err(err.to_string()),
+    };
+
+    let mut installed_mods = Vec::new();
+
+    for (key, value) in res.as_object().unwrap() {
+
+        let current_mod: NorthstarMod = NorthstarMod {
+            name: key.to_string(),
+            enabled: value.as_bool().unwrap(),
+        };
+        installed_mods.push(current_mod);
+    }
+
+    dbg!(&res);
+    dbg!(installed_mods.clone());
+
+    Ok(installed_mods)
+}
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 4826ef52..0cb329d2 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -12,8 +12,8 @@ use std::{
 use app::{
     check_is_flightcore_outdated, check_is_valid_game_path, check_northstar_running,
     check_origin_running, convert_release_candidate_number, find_game_install_location,
-    get_enabled_mods, get_host_os, get_log_list, get_northstar_version_number, install_northstar,
-    launch_northstar, set_mod_enabled_status, GameInstall, linux_checks_librs
+    get_enabled_mods, get_host_os, get_installed_mods, get_log_list, get_northstar_version_number,
+    install_northstar, launch_northstar, linux_checks_librs, set_mod_enabled_status, GameInstall, NorthstarMod,
 };
 
 mod repair_and_verify;
@@ -88,7 +88,8 @@ fn main() {
             set_mod_enabled_status_caller,
             disable_all_but_core_caller,
             is_debug_mode,
-            linux_checks
+            linux_checks,
+            get_installed_mods_caller,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
@@ -297,3 +298,8 @@ fn set_mod_enabled_status_caller(
 fn disable_all_but_core_caller(game_install: GameInstall) -> Result<(), String> {
     disable_all_but_core(game_install)
 }
+
+#[tauri::command]
+async fn get_installed_mods_caller(game_install: GameInstall) -> Result<Vec<NorthstarMod>, String> {
+    get_installed_mods(game_install)
+}