Add an updater

i would advise users to just git clone instead, but whatever

restore.sh

@@ -104,14 +104,15 @@ set_tool_paths() {
 
         # architecture check
         if [[ $(uname -m) == "a"* && $(getconf LONG_BIT) == 64 ]]; then
-            dir+="arm64"
+            platform_arch="arm64"
         elif [[ $(uname -m) == "a"* ]]; then
-            dir+="armhf"
+            platform_arch="armhf"
         elif [[ $(uname -m) == "x86_64" ]]; then
-            dir+="x86_64"
+            platform_arch="x86_64"
         else
             error "Your architecture ($(uname -m)) is not supported."
         fi
+        dir+="$platform_arch"
 
         # version check
         if [[ -n $UBUNTU_CODENAME ]]; then
@@ -376,8 +377,48 @@ install_depends() {
     exit
 }
 
+version_get() {
+    log "Checking for updates..."
+    github_api=$(curl https://api.github.com/repos/LukeZGD/Legacy-iOS-Kit/releases/latest 2>/dev/null)
+    version_latest=$(echo "$github_api" | $jq -r '.assets[] | select(.name|test("complete")) | .name' | cut -c 25- | cut -c -9)
+    git_hash_latest=$(echo "$github_api" | $jq -r '.assets[] | select(.name|test("git-hash")) | .name' | cut -c 21- | cut -c -7)
+}
+
+version_update() {
+    local url
+    local req
+    read -p "$(input 'Do you want to update now? (Y/n): ')" opt
+    if [[ $opt == 'n' || $opt == 'N' ]]; then
+        exit
+    fi
+    if [[ -d .git ]]; then
+        log "Running git pull..."
+        git pull
+        log "Done! Please run the script again"
+        exit
+    elif (( $(ls bin | wc -l) > 1 )); then
+        req=".assets[] | select (.name|test(\"complete\")) | .browser_download_url"
+    elif [[ $platform == "linux" ]]; then
+        req=".assets[] | select (.name|test(\"${platform}_$platform_arch\")) | .browser_download_url"
+    else
+        req=".assets[] | select (.name|test(\"${platform}\")) | .browser_download_url"
+    fi
+    url="$(echo "$github_api" | $jq -r "$req")"
+    log "Downloading: $url"
+    curl -L $url -o tmp/latest.zip
+    if [[ ! -s tmp/latest.zip ]]; then
+        error "Download failed. Please run the script again"
+    fi
+    log "Updating..."
+    cp resources/firstrun tmp 2>/dev/null
+    rm -r bin/ resources/ LICENSE README.md restore*
+    unzip -q tmp/latest.zip -d .
+    cp tmp/firstrun resources 2>/dev/null
+    log "Done! Please run the script again"
+    exit
+}
+
 version_check() {
-    local github_api
     pushd .. >/dev/null
     if [[ -d .git ]]; then
         git_hash=$(git rev-parse HEAD | cut -c -7)
@@ -392,8 +433,10 @@ version_check() {
     else
         log ".git directory and git_hash file not found, cannot determine version."
         if [[ $no_version_check != 1 ]]; then
-            error "Your copy of Legacy iOS Kit is downloaded incorrectly. Do not use the \"Code\" button in GitHub." \
+            warn "Your copy of Legacy iOS Kit is downloaded incorrectly. Do not use the \"Code\" button in GitHub."
-            "* Please download Legacy iOS Kit using git clone or from GitHub releases: https://github.com/LukeZGD/Legacy-iOS-Kit/releases"
+            print "Please download Legacy iOS Kit using git clone or from GitHub releases: https://github.com/LukeZGD/Legacy-iOS-Kit/releases"
+            version_check
+            version_update
         fi
     fi
 
@@ -402,10 +445,7 @@ version_check() {
     fi
 
     if [[ $no_version_check != 1 ]]; then
-        log "Checking for updates..."
+        version_get
-        github_api=$(curl https://api.github.com/repos/LukeZGD/Legacy-iOS-Kit/releases/latest 2>/dev/null)
-        version_latest=$(echo "$github_api" | grep "latest/Legacy-iOS-Kit_complete" | cut -c 123- | cut -c -9 | sed -e 's/\.$//')
-        git_hash_latest=$(echo "$github_api" | grep "latest/git-hash" | cut -c 119- | cut -c -7)
         if [[ -z $version_latest ]]; then
             warn "Failed to check for updates. GitHub may be down or blocked by your network."
         elif [[ $version_latest != "$version_current" ]]; then
@@ -416,7 +456,7 @@ version_check() {
                 print "* Current version: $version_current ($git_hash)"
                 print "* Latest version:  $version_latest ($git_hash_latest)"
                 print "* Please download/pull the latest version before proceeding."
-                exit
+                version_update
             fi
         fi
     fi
@@ -2771,7 +2811,7 @@ menu_print_info() {
     if [[ $no_version_check == 1 ]]; then
         warn "No version check flag detected, update check is disabled and no support will be provided."
     fi
-    if [[ $version_latest != "$version_current" ]]; then
+    if [[ $git_hash_latest != "$git_hash" ]]; then
         warn "Current version is newer/different than remote: $version_latest ($git_hash_latest)"
     fi
     print "* Platform: $platform ($platform_ver) $live_cdusb_r"