fix: add fallbacks and remote resource checks

helpers/funcs

@@ -70,18 +70,12 @@ game_dir="$steam_path/steamapps/common/DayZ"
 #URLS
 author="aclist"
 repo="dztui"
-#TODO: this is hardcoded
-#2024-12-12
 gh_prefix="https://github.com"
 issues_url="$gh_prefix/$author/$repo/issues"
-url_prefix="https://codeberg.org/$author/$repo/raw/branch"
+url_prefix="https://raw.githubusercontent.com/$author/$repo"
 stable_url="$url_prefix/dzgui"
 testing_url="$url_prefix/testing"
-releases_url="https://codeberg.org/$author/$repo/releases/download/browser"
-km_helper_url="$releases_url/latlon"
-db_file="$releases_url/ips.csv.gz"
-sums_url="$stable_url/helpers/sums.md5"
-#TODO: move adoc to index
+releases_url="$gh_prefix/$author/$repo/releases/download/browser"
 help_url="https://$author.github.io/dzgui/dzgui"
 forum_url="$gh_prefix/$author/$repo/discussions"
 sponsor_url="$gh_prefix/sponsors/$author"
@@ -829,7 +823,40 @@ format_version_url(){
     esac
     echo "$version_url"
 }
+get_response_code(){
+    local url="$1"
+    curl -Ls -I -o /dev/null -w "%{http_code}" "$url"
+}
+test_connection(){
+    source "$config_file"
+    declare -A hr
+    local res1
+    local res2
+    local str="No connection could be established to the remote server"
+    hr=(
+        ["github.com"]="https://github.com/$author"
+        ["codeberg.org"]="https://codeberg.org/$author"
+    )
+    res=$(get_response_code "${hr["github.com"]}")
+    if [[ $res -ne 200 ]]; then
+        logger WARN "Remote host '${hr["github.com"]}' unreachable', trying fallback"
+        remote_host=cb
+        res=$(get_response_code "${hr["codeberg.org"]}")
+        if [[ $res -ne 200 ]]; then
+            printf "Failed to fetch new version. Rolling back"
+            return 1
+        fi
+    fi
+    logger INFO "Set remote host to '${hr["codeberg.org"]}'"
+    if [[ $remote_host == "cb" ]]; then
+        url_prefix="https://codeberg.org/$author/$repo/raw/branch"
+        releases_url="https://codeberg.org/$author/$repo/releases/download/browser"
+        stable_url="$url_prefix/dzgui"
+        testing_url="$url_prefix/testing"
+    fi
+}
 download_new_version(){
+    test_connection
     local version_url="$(format_version_url)"
     mv "$src_path" "$src_path.old"
     curl -Ls "$version_url" > "$src_path"
@@ -854,9 +881,7 @@ dl_changelog(){
     local file="CHANGELOG.md"
     [[ $branch == "stable" ]] && mdbranch="dzgui"
     [[ $branch == "testing" ]] && mdbranch="testing"
-    #TODO: this is hardcoded
-    #2024-12-12
-    local md="https://codeberg.org/$author/$repo/raw/branch/${mdbranch}/$file"
+    local md="$url_prefix/${mdbranch}/$file"
     curl -Ls "$md" > "$state_path/$file"
 }
 toggle(){