fix env variable load and subst order

source/src/commands/create-service.cpp

@@ -83,10 +83,10 @@ namespace dropshell
             if (!std::filesystem::exists(readme_path))
                 return false;
 
-            std::map<std::string, std::string> all_env_vars;
+            ordered_env_vars all_env_vars;
             get_all_service_env_vars(server, service, all_env_vars);
-            all_env_vars["LOCAL_CONFIG_PATH"] = localpath::service(server, service);
-            all_env_vars["LOCAL_TEMPLATE_PATH"] = tinfo.local_template_path().string();
+            set_var(all_env_vars, "LOCAL_CONFIG_PATH", localpath::service(server, service));
+            set_var(all_env_vars, "LOCAL_TEMPLATE_PATH", tinfo.local_template_path().string());
 
             info << std::endl;
             std::ifstream readme_file(readme_path);

source/src/commands/exec.cpp

@@ -89,7 +89,7 @@ namespace dropshell
         std::string user = server_env.get_user_for_service(service);
         
         // Get all service environment variables
-        std::map<std::string, std::string> env_vars;
+        ordered_env_vars env_vars;
         if (!get_all_service_env_vars(server, service, env_vars))
         {
             error << "Failed to get environment variables for service " << service << std::endl;
@@ -97,7 +97,7 @@ namespace dropshell
         }
 
         // Add HOST_NAME like other commands do
-        env_vars["HOST_NAME"] = server_env.get_SSH_HOST();
+        set_var(env_vars, "HOST_NAME", server_env.get_SSH_HOST());
         
         // Get the remote service template path for working directory
         std::string remote_service_template_path = remotepath(server, user).service_template(service);

source/src/servers.cpp

@@ -347,14 +347,14 @@ namespace dropshell
         std::string remote_service_template_path = remotepath(mServerName, user).service_template(service_name);
         std::string script_path = remote_service_template_path + "/" + command + ".sh";
 
-        std::map<std::string, std::string> env_vars;
+        ordered_env_vars env_vars;
         if (!get_all_service_env_vars(mServerName, service_name, env_vars))
         {
             error << "Failed to get all service env vars for " << service_name << std::endl;
             return std::nullopt;
         }
 
-        env_vars["HOST_NAME"] = get_SSH_HOST();
+        set_var(env_vars, "HOST_NAME", get_SSH_HOST());
 
         std::string argstr = "";
         for (const auto &arg : args)

source/src/services.cpp

@@ -62,9 +62,9 @@ namespace dropshell
         return services;
     }
 
-    bool get_bool_variable(const std::map<std::string, std::string> &variables, const std::string &variable_name)
+    bool get_bool_variable(const ordered_env_vars &variables, const std::string &variable_name)
     {
-        auto it = variables.find(variable_name);
+        auto it = find_var(variables, variable_name);
         if (it == variables.end())
         {
             error << "Variable " << variable_name << " not found in the service " << filenames::template_info_env << std::endl;
@@ -97,12 +97,12 @@ namespace dropshell
         }
 
         // now set the template name and path.
-        std::map<std::string, std::string> variables;
+        ordered_env_vars variables;
         if (!get_all_service_env_vars(server_name, service_name, variables))
             return LocalServiceInfo();
 
         { // confirm TEMPLATE is defined.
-            auto it = variables.find("TEMPLATE");
+            auto it = find_var(variables, "TEMPLATE");
             if (it == variables.end())
             {
                 error << "TEMPLATE variable not defined in service " << service_name << " on server " << server_name << std::endl;
@@ -123,7 +123,7 @@ namespace dropshell
         service.local_template_path = tinfo.local_template_path();
 
         { // set the user.
-            auto it = variables.find("SSH_USER");
+            auto it = find_var(variables, "SSH_USER");
             if (it == variables.end())
             {
                 error << "SSH_USER variable not defined in service " << service_name << " on server " << server_name << std::endl;
@@ -138,7 +138,7 @@ namespace dropshell
         service.requires_docker_root = get_bool_variable(variables, "REQUIRES_DOCKER_ROOT");
 
         { // determine if the service template hash matches the template hash.
-            auto it = variables.find("TEMPLATE_HASH");
+            auto it = find_var(variables, "TEMPLATE_HASH");
             service.service_template_hash_match = false;
 
             if (it == variables.end())
@@ -221,9 +221,9 @@ namespace dropshell
         return backups;
     }
 
-    bool get_all_service_env_vars(const std::string &server_name, const std::string &service_name, std::map<std::string, std::string> &all_env_vars)
+    bool get_all_service_env_vars(const std::string &server_name, const std::string &service_name, ordered_env_vars &all_env_vars)
     {
-        all_env_vars.clear();
+        clear_vars(all_env_vars);
 
         if (localpath::service(server_name, service_name).empty() || !fs::exists(localpath::service(server_name, service_name)))
         {
@@ -236,11 +236,11 @@ namespace dropshell
         {
             if (!file.empty() && std::filesystem::exists(file))
             {
-                std::map<std::string, std::string> env_vars;
+                ordered_env_vars env_vars;
                 envmanager env_manager(file);
                 env_manager.load();
                 env_manager.get_all_variables(env_vars);
-                all_env_vars.merge(env_vars);
+                merge_vars(all_env_vars, env_vars);
             }
             else
                 warning << "Expected environment file not found: " << file << std::endl;
@@ -248,15 +248,15 @@ namespace dropshell
 
 
         // add in some simple variables first, as others below may depend on/use these in bash.
-        all_env_vars["SERVER"] = server_name;
-        all_env_vars["SERVICE"] = service_name;
-        all_env_vars["DOCKER_CLI_HINTS"] = "false"; // turn off docker junk.
+        set_var(all_env_vars, "SERVER", server_name);
+        set_var(all_env_vars, "SERVICE", service_name);
+        set_var(all_env_vars, "DOCKER_CLI_HINTS", "false"); // turn off docker junk.
 
         // Load environment files
         load_env_file(localfile::service_env(server_name, service_name));
         load_env_file(localfile::template_info_env(server_name, service_name));
 
-        std::string user = all_env_vars["SSH_USER"];
+        std::string user = get_var(all_env_vars, "SSH_USER");
         if (user.empty())
         {
             error << "SSH_USER variable not defined in service " << service_name << " on server " << server_name << std::endl;
@@ -266,12 +266,12 @@ namespace dropshell
         }
 
         // more additional, these depend on others above.
-        all_env_vars["CONFIG_PATH"] = remotepath(server_name, user).service_config(service_name);
-        all_env_vars["AGENT_PATH"] = remotepath(server_name, user).agent();
+        set_var(all_env_vars, "CONFIG_PATH", remotepath(server_name, user).service_config(service_name));
+        set_var(all_env_vars, "AGENT_PATH", remotepath(server_name, user).agent());
 
 
         // determine template name.
-        auto it = all_env_vars.find("TEMPLATE");
+        auto it = find_var(all_env_vars, "TEMPLATE");
         if (it == all_env_vars.end())
         {
             error << "TEMPLATE variable not defined in service " << service_name << " on server " << server_name << std::endl;

source/src/services.hpp

@@ -5,6 +5,7 @@
 #include <vector>
 #include <set>
 #include <map>
+#include "utils/ordered_env.hpp"
 
 namespace dropshell {
 
@@ -29,7 +30,7 @@ namespace dropshell {
     std::set<std::string> get_used_commands(const std::string& server_name, const std::string& service_name);
 
     // get all env vars for a given service
-    bool get_all_service_env_vars(const std::string& server_name, const std::string& service_name, std::map<std::string, std::string> & all_env_vars);
+    bool get_all_service_env_vars(const std::string& server_name, const std::string& service_name, ordered_env_vars& all_env_vars);
 
     // list all backups for a given service (across all servers)
     std::set<std::string> list_backups(const std::string& server_name, const std::string& service_name);

source/src/templates.cpp

@@ -665,23 +665,23 @@
 
         // ------------------------------------------------------------
         // check TEMPLATE= line.
-        std::map<std::string, std::string> all_env_vars;
+        ordered_env_vars all_env_vars;
         std::vector<std::string> env_files = {
             "config/" + filenames::service_env,
             "config/" + filenames::template_info_env
         };
         for (const auto& file : env_files) {
             { // load service.env from the service on this machine.
-            std::map<std::string, std::string> env_vars;
+            ordered_env_vars env_vars;
             envmanager env_manager(template_path + "/" + file);
             env_manager.load();
             env_manager.get_all_variables(env_vars);
-            all_env_vars.merge(env_vars);
+            merge_vars(all_env_vars, env_vars);
             }
         }
 
         // determine template name.
-        auto it = all_env_vars.find("TEMPLATE");
+        auto it = find_var(all_env_vars, "TEMPLATE");
         if (it == all_env_vars.end()) {
             error << "TEMPLATE variable not found in " << template_path << std::endl;
             return false;

source/src/utils/envmanager.cpp

@@ -56,7 +56,7 @@ bool envmanager::load() {
             }
 
             // trim whitespace from the key and value
-            m_variables[dequote(trim(key))] = dequote(trim(value));
+            set_var(m_variables, dequote(trim(key)), dequote(trim(value)));
         }
     }
     file.close();
@@ -77,29 +77,21 @@ void envmanager::save() {
 
 std::string envmanager::get_variable(std::string key) const {
     key = dequote(trim(key));
-    
-    // Use case-insensitive comparison to find the key
-    for (const auto& pair : m_variables) {
-        if (pair.first == key) {
-            return pair.second;
-        }
-    }
-    
-    return "";
+    return get_var(m_variables, key);
 }
 
-void envmanager::get_all_variables(std::map<std::string, std::string>& variables) const {
+void envmanager::get_all_variables(ordered_env_vars& variables) const {
     variables = m_variables;
 }
 
-void envmanager::add_variables(std::map<std::string, std::string> variables) {
-    for (auto& pair : variables) {
+void envmanager::add_variables(const ordered_env_vars& variables) {
+    for (const auto& pair : variables) {
         set_variable(pair.first, pair.second);
     }
 }
 
 void envmanager::set_variable(std::string key, std::string value) {
-    m_variables[dequote(trim(key))] = dequote(trim(value));
+    set_var(m_variables, dequote(trim(key)), dequote(trim(value)));
 }
 
 void envmanager::clear_variables() {

source/src/utils/envmanager.hpp

@@ -4,6 +4,8 @@
 #include <string>
 #include <map>
 #include <vector>
+#include "ordered_env.hpp"
+
 namespace dropshell {
 
 // envmanager is a class that manages the environment files for the application.
@@ -23,17 +25,17 @@ class envmanager {
         // get variables from the environment files. Trim whitespace from the values.
         // keys are case-sensitive.
         std::string get_variable(std::string key) const;
-        void get_all_variables(std::map<std::string, std::string>& variables) const;
+        void get_all_variables(ordered_env_vars& variables) const;
 
         // add variables to the environment files.
         // trim whitespace from the values.
-        void add_variables(std::map<std::string, std::string> variables);
+        void add_variables(const ordered_env_vars& variables);
         void set_variable(std::string key, std::string value);
         void clear_variables();
 
     private:
         std::string m_path;
-        std::map<std::string, std::string> m_variables;
+        ordered_env_vars m_variables;
 };  
 
 // utility functions

source/src/utils/execute.cpp

@@ -113,7 +113,7 @@ namespace dropshell
         sColour currentColour_;
     };
 
-    bool execute_local_command(std::string directory_to_run_in, std::string command_to_run, const std::map<std::string, std::string> &env_vars, std::string *output, cMode mode)
+    bool execute_local_command(std::string directory_to_run_in, std::string command_to_run, const ordered_env_vars& env_vars, std::string *output, cMode mode)
     {
         sCommand command(directory_to_run_in, command_to_run, env_vars);
 

source/src/utils/execute.hpp

@@ -3,6 +3,7 @@
 
 #include <string>
 #include <map>
+#include "ordered_env.hpp"
 
 namespace dropshell {
 
@@ -44,7 +45,7 @@ class sSSHInfo {
         std::string user_dir; // dropshell directory for the user.
 };
 
-bool execute_local_command(std::string directory_to_run_in, std::string command_to_run, const std::map<std::string, std::string> & env_vars, std::string * output = nullptr, cMode mode = cMode::Defaults);
+bool execute_local_command(std::string directory_to_run_in, std::string command_to_run, const ordered_env_vars& env_vars, std::string * output = nullptr, cMode mode = cMode::Defaults);
 bool execute_ssh_command(const sSSHInfo & ssh_info, const sCommand & remote_command, cMode mode = cMode::Defaults, std::string * output = nullptr);
 
 
@@ -54,14 +55,14 @@ bool execute_ssh_command(const sSSHInfo & ssh_info, const sCommand & remote_comm
 // class to hold a command to run on the remote server.
 class sCommand {
     public:
-        sCommand(std::string directory_to_run_in, std::string command_to_run, const std::map<std::string, std::string> & env_vars) : 
+        sCommand(std::string directory_to_run_in, std::string command_to_run, const ordered_env_vars& env_vars) :
             mDir(directory_to_run_in), mCmd(command_to_run), mVars(env_vars) {}
 
         std::string get_directory_to_run_in() const { return mDir; }
         std::string get_command_to_run() const { return mCmd; }
-        const std::map<std::string, std::string>& get_env_vars() const { return mVars; }
+        const ordered_env_vars& get_env_vars() const { return mVars; }
 
-        void add_env_var(const std::string& key, const std::string& value) { mVars[key] = value; }
+        void add_env_var(const std::string& key, const std::string& value) { mVars.emplace_back(key, value); }
 
         bool empty() const { return mCmd.empty(); }
 
@@ -73,7 +74,7 @@ class sCommand {
     private:
         std::string mDir;
         std::string mCmd;
-        std::map<std::string, std::string> mVars;
+        ordered_env_vars mVars;
 };
 
 bool EXITSTATUSCHECK(int ret);

source/src/utils/ordered_env.hpp

@@ -0,0 +1,64 @@
+#ifndef ORDERED_ENV_HPP
+#define ORDERED_ENV_HPP
+
+#include <vector>
+#include <string>
+#include <utility>
+#include <algorithm>
+
+namespace dropshell {
+
+// Type alias for insertion-ordered environment variables
+using ordered_env_vars = std::vector<std::pair<std::string, std::string>>;
+
+// Helper functions for working with ordered_env_vars like a map
+
+// Find a variable by key (returns iterator)
+inline auto find_var(ordered_env_vars& vars, const std::string& key) {
+    return std::find_if(vars.begin(), vars.end(),
+        [&](const auto& p) { return p.first == key; });
+}
+
+inline auto find_var(const ordered_env_vars& vars, const std::string& key) {
+    return std::find_if(vars.begin(), vars.end(),
+        [&](const auto& p) { return p.first == key; });
+}
+
+// Get a variable value (returns empty string if not found)
+inline std::string get_var(const ordered_env_vars& vars, const std::string& key) {
+    auto it = find_var(vars, key);
+    return (it != vars.end()) ? it->second : "";
+}
+
+// Set a variable (updates if exists, appends if new)
+inline void set_var(ordered_env_vars& vars, const std::string& key, const std::string& value) {
+    auto it = find_var(vars, key);
+    if (it != vars.end()) {
+        it->second = value;
+    } else {
+        vars.emplace_back(key, value);
+    }
+}
+
+// Check if a variable exists
+inline bool has_var(const ordered_env_vars& vars, const std::string& key) {
+    return find_var(vars, key) != vars.end();
+}
+
+// Merge variables from another ordered_env_vars (appends new, skips existing)
+inline void merge_vars(ordered_env_vars& dest, const ordered_env_vars& src) {
+    for (const auto& [key, value] : src) {
+        if (!has_var(dest, key)) {
+            dest.emplace_back(key, value);
+        }
+    }
+}
+
+// Clear all variables
+inline void clear_vars(ordered_env_vars& vars) {
+    vars.clear();
+}
+
+} // namespace dropshell
+
+#endif

source/src/utils/utils.cpp

@@ -376,7 +376,7 @@ std::string replace_with_environment_variables_like_bash(std::string str) {
 }
 
 
-std::string substitute_provided_key_value_pairs(std::string str, const std::map<std::string, std::string> &env_vars)
+std::string substitute_provided_key_value_pairs(std::string str, const ordered_env_vars& env_vars)
 {
     // Combined regex pattern for both ${var} and $var formats
     std::regex var_pattern("\\$(?:\\{([^}]+)\\}|([a-zA-Z0-9_]+))");
@@ -388,9 +388,8 @@ std::string substitute_provided_key_value_pairs(std::string str, const std::map<
         // match[2] will contain capture from $var format
         std::string var_name = match[1].matched ? match[1].str() : match[2].str();
 
-        // Get value from environment variables map
-        auto it = env_vars.find(var_name);
-        std::string value = (it != env_vars.end()) ? it->second : "";
+        // Get value from environment variables
+        std::string value = get_var(env_vars, var_name);
 
         result = result.replace(match.position(), match.length(), value);
     }

source/src/utils/utils.hpp

@@ -5,6 +5,7 @@
 #include <map>
 
 #include "output.hpp"
+#include "ordered_env.hpp"
 #include <nlohmann/json.hpp>
 
 namespace dropshell {
@@ -54,7 +55,7 @@ std::string right_align(const std::string & str, int width);
 std::string center_align(const std::string & str, int width);
 
 std::string replace_with_environment_variables_like_bash(std::string str);
-std::string substitute_provided_key_value_pairs(std::string str, const std::map<std::string, std::string> & env_vars);
+std::string substitute_provided_key_value_pairs(std::string str, const ordered_env_vars& env_vars);
 
 int get_console_width();