Add overrides.env support for per-location service env overrides

source/src/commands/edit.cpp

@@ -8,7 +8,9 @@
 #include "templates.hpp"
 
 #include <unistd.h>
+#include <termios.h>
 #include <cstring>
+#include <fstream>
 #include <iostream>
 #include <sstream>
 #include <filesystem>
@@ -32,12 +34,13 @@ struct EditCommandRegister {
             false, // requires_install
             0,     // min_args (after command)
             2,     // max_args (after command)
-            "edit [SERVER] [SERVICE]",
-            "Edit dropshell, server or service configuration",
+            "edit [SERVER] [SERVICE] | edit override",
+            "Edit dropshell, server, service, or override configuration",
             // heredoc
             R"(
             Edit dropshell, server or service configuration.
             edit                      edit the dropshell config.
+            edit override             edit the overrides.env for a server location.
             edit <server>             edit the server config.
             edit <server> <service>   edit the service config.
             )"
@@ -241,12 +244,70 @@ int edit_service_config(const std::string &server, const std::string &service)
     return 0;
 }
 
+// ------------------------------------------------------------------------------------------------
+// edit override
+// ------------------------------------------------------------------------------------------------
+int edit_override()
+{
+    auto paths = gConfig().get_local_server_definition_paths();
+    if (paths.empty()) {
+        error << "No server definition paths configured." << std::endl;
+        return 1;
+    }
+
+    std::string chosen_path;
+    if (paths.size() == 1) {
+        chosen_path = paths[0];
+    } else {
+        // Multiple paths - ask user to choose with single keypress
+        info << "Multiple server locations found. Choose one:" << std::endl;
+        for (size_t i = 0; i < paths.size() && i < 9; ++i)
+            info << "  " << (i + 1) << ") " << paths[i] << std::endl;
+
+        info << "Enter choice [1-" << std::min(paths.size(), (size_t)9) << "]: " << std::flush;
+
+        // Read single keypress
+        struct termios oldt, newt;
+        tcgetattr(STDIN_FILENO, &oldt);
+        newt = oldt;
+        newt.c_lflag &= ~(ICANON | ECHO);
+        tcsetattr(STDIN_FILENO, TCSANOW, &newt);
+        int ch = getchar();
+        tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
+        info << (char)ch << std::endl;
+
+        int idx = ch - '1';
+        if (idx < 0 || idx >= (int)paths.size()) {
+            error << "Invalid choice." << std::endl;
+            return 1;
+        }
+        chosen_path = paths[idx];
+    }
+
+    std::string override_file = (std::filesystem::path(chosen_path) / filenames::overrides_env).string();
+
+    // Create with comment header if it doesn't exist
+    if (!std::filesystem::exists(override_file)) {
+        std::ofstream f(override_file);
+        f << "# Overrides for all services in this server location." << std::endl;
+        f << "# Variables set here will be forced into every service.env" << std::endl;
+        f << "# during create-service and install." << std::endl;
+        f << "#" << std::endl;
+        f << "# Format is the same as service.env:" << std::endl;
+        f << "#   VARIABLE_NAME=\"value\"" << std::endl;
+        f << std::endl;
+        info << "Created new overrides file: " << override_file << std::endl;
+    }
+
+    return edit_file(override_file, true) ? 0 : 1;
+}
+
 // ------------------------------------------------------------------------------------------------
 // edit command handler
 // ------------------------------------------------------------------------------------------------
 int edit_handler(const CommandContext& ctx) {
     // edit dropshell config
-    if (ctx.args.size() < 1) 
+    if (ctx.args.size() < 1)
     {
         if (ctx.command=="create-config")
         {
@@ -258,6 +319,10 @@ int edit_handler(const CommandContext& ctx) {
             return edit_config();
     }
 
+    // edit override - check before server/service dispatch
+    if (safearg(ctx.args, 0) == "override")
+        return edit_override();
+
     // edit server config
     if (ctx.args.size() < 2) {
         edit_server(safearg(ctx.args,0));