From 1b5b701d77e350d6f9a29a4fb133a63bbc2a2106 Mon Sep 17 00:00:00 2001
From: Coal <dibashtori@gmail.com>
Date: Fri, 18 Feb 2022 21:47:03 -0600
Subject: [PATCH] Setting up command handling

---
 dev/samplepackage/hamming_demo.lua   |  2 +-
 dev/samplerepository/repository.toml |  2 +-
 src/argparser.h                      |  1 +
 src/command.cpp                      | 23 +++++++++++++++++++++++
 src/command.h                        | 25 +++++++++++++++++++++++++
 src/errorhandling.h                  | 15 +++++++++++++++
 src/handlers/handlers.h              |  8 ++++++++
 src/handlers/install.cpp             |  6 ++++++
 src/handlers/install.h               |  7 +++++++
 src/library                          |  2 +-
 10 files changed, 88 insertions(+), 3 deletions(-)
 create mode 100644 src/command.cpp
 create mode 100644 src/command.h
 create mode 100644 src/errorhandling.h
 create mode 100644 src/handlers/handlers.h
 create mode 100644 src/handlers/install.cpp
 create mode 100644 src/handlers/install.h

diff --git a/dev/samplepackage/hamming_demo.lua b/dev/samplepackage/hamming_demo.lua
index b4eadaf..cc65795 100644
--- a/dev/samplepackage/hamming_demo.lua
+++ b/dev/samplepackage/hamming_demo.lua
@@ -1,7 +1,7 @@
 -- This is useful:
 import = require("lpm").import
 
--- Optionally, if your module returns a table, you can do it as follows:
+-- Optionally, if your module returns an object, you can do it as follows:
 -- local hamming = import "hamming:latest"
 import "hamming:latest"
 
diff --git a/dev/samplerepository/repository.toml b/dev/samplerepository/repository.toml
index 73b09f9..284ecb9 100644
--- a/dev/samplerepository/repository.toml
+++ b/dev/samplerepository/repository.toml
@@ -10,4 +10,4 @@ package_type = "zip"
 [packages.wolf]
 summary = "A Lua library for creating static websites"
 package_type = "git"
-"1.0" = { source = "git://github.com/coalio/wolf" }
\ No newline at end of file
+"1.0" = { source = "git://github.com/coalio/wolf.git" }
\ No newline at end of file
diff --git a/src/argparser.h b/src/argparser.h
index 6053c57..cbfd09e 100644
--- a/src/argparser.h
+++ b/src/argparser.h
@@ -1,3 +1,4 @@
+#pragma once
 #include <iostream>
 #include <string>
 #include <map>
diff --git a/src/command.cpp b/src/command.cpp
new file mode 100644
index 0000000..b67cd5a
--- /dev/null
+++ b/src/command.cpp
@@ -0,0 +1,23 @@
+#include <string>
+#include "lpm/types.h"
+#include "lpm/macros.h"
+#include "command.h"
+#include "errorhandling.h"
+
+bool Command::execute(Type command_type, args_t& args) {
+    try {
+        switch (command_type) {
+            case Type::INSTALL:
+                Handlers::install(args);
+                break;
+            default:
+                LPM_PRINT_ERROR("Unsupported command: " << command_type);
+                return false;
+        }
+    } catch (...) {
+        LPM_PRINT_ERROR("Failed to execute command: " << command_type);
+        LPM_PRINT_DEBUG("Exception: " << ErrorHandling::what());
+    }
+
+    return true;
+}
\ No newline at end of file
diff --git a/src/command.h b/src/command.h
new file mode 100644
index 0000000..02ae343
--- /dev/null
+++ b/src/command.h
@@ -0,0 +1,25 @@
+#pragma once
+#include <string>
+#include "lpm/types.h"
+#include "lpm/macros.h"
+
+namespace Command {
+    enum Type {
+        HELP,
+        INIT,
+        INSTALL,
+        ADD,
+        RUN,
+        REMOVE,
+        UPDATE,
+        LIST,
+        SEARCH,
+        REPOSITORY,
+        AUDIT,
+        SHOW,
+        PURGE
+    };
+
+    // Pass a command to its respective handler.
+    bool execute(Command::Type command_type, args_t& args);
+}
\ No newline at end of file
diff --git a/src/errorhandling.h b/src/errorhandling.h
new file mode 100644
index 0000000..208b288
--- /dev/null
+++ b/src/errorhandling.h
@@ -0,0 +1,15 @@
+#pragma once
+#include <string>
+#include <exception>
+
+namespace ErrorHandling {
+    std::string what(const std::exception_ptr &eptr = std::current_exception()) {
+        if (!eptr) { throw std::bad_exception(); }
+
+        try { std::rethrow_exception(eptr); }
+        catch (const std::exception &e) { return e.what()   ; }
+        catch (const std::string    &e) { return e          ; }
+        catch (const char           *e) { return e          ; }
+        catch (...)                     { return "Unknown error"; }
+    }
+}
diff --git a/src/handlers/handlers.h b/src/handlers/handlers.h
new file mode 100644
index 0000000..7e38374
--- /dev/null
+++ b/src/handlers/handlers.h
@@ -0,0 +1,8 @@
+// Its convenient to have all commands in separate compilation units
+// to improve compilation speed.
+
+#pragma once
+
+#include "install.h"
+
+namespace Handlers {}
\ No newline at end of file
diff --git a/src/handlers/install.cpp b/src/handlers/install.cpp
new file mode 100644
index 0000000..f9a7719
--- /dev/null
+++ b/src/handlers/install.cpp
@@ -0,0 +1,6 @@
+#include "install.h"
+#include "lpm/macros.h"
+
+void Handlers::install(args_t& args) {
+    LPM_PRINT("Handlers::install()");
+}
\ No newline at end of file
diff --git a/src/handlers/install.h b/src/handlers/install.h
new file mode 100644
index 0000000..0bce7f1
--- /dev/null
+++ b/src/handlers/install.h
@@ -0,0 +1,7 @@
+#pragma once
+#include "lpm/types.h"
+
+namespace Handlers {
+    // Handler for lpm install.
+    void install(args_t& args);
+}
\ No newline at end of file
diff --git a/src/library b/src/library
index d373c20..e4ffd60 160000
--- a/src/library
+++ b/src/library
@@ -1 +1 @@
-Subproject commit d373c202985255b9a6108befc662a5b32834986c
+Subproject commit e4ffd60d301106fad435c4413b09bd1769f30919