From 8473c40c36cf20877956fffb23674ab5f329de5e Mon Sep 17 00:00:00 2001
From: Maciej Samborski <SamborskiMaciej@protonmail.com>
Date: Mon, 12 Feb 2024 19:22:39 +0100
Subject: [PATCH] Started work on argument parsing.

---
 args.c   | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 args.h   |  9 +++++++++
 common.c | 14 ++++++++++++++
 common.h | 37 ++++++++++++++++++++++++++++++++++++
 main.c   | 50 +++++++++++++++++++++++++++---------------------
 5 files changed, 146 insertions(+), 22 deletions(-)
 create mode 100644 args.c
 create mode 100644 args.h
 create mode 100644 common.c
 create mode 100644 common.h

diff --git a/args.c b/args.c
new file mode 100644
index 0000000..5139481
--- /dev/null
+++ b/args.c
@@ -0,0 +1,58 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common.h"
+
+void help()
+{
+    char * help = "Usage: partager [OPTIONS] ip\n"
+                  "Straight forward communication over the internet\n"
+                  "\nOptions:\n"
+                  "";
+    printf("%s\n", help);
+    exit(0);
+}
+
+partresult parseArgs(int argc, char ** argv, State * state)
+{
+    for (int i = 1; i < argc; ++i)
+    {
+        if (*argv[i] == '-')
+        {
+            char * value = argv[i + 1];
+
+            if (!strcmp("-p", argv[i]) ||
+                !strcmp("--port", argv[i])
+               )
+            {
+                state->conf.port = atoi(value);
+                goto skip;
+            }
+
+            continue;
+
+            skip:
+                ++i;
+        } else
+        {
+            if (!strcmp(argv[i], "server"))
+            {
+                state->conf.mode = PARTSERVER;
+            }
+            else if (!strcmp(argv[i], "client"))
+            {
+                state->conf.mode = PARTCLIENT;
+            }
+            else if (i == argc - 1) //TODO: replace with proper ip address validation and add domain support
+            {
+                strncpy(state->conf.ip, argv[i], IPADDRLEN);
+            }
+            else
+                return -1;
+        }
+    }
+
+    return 0;
+}
diff --git a/args.h b/args.h
new file mode 100644
index 0000000..30da224
--- /dev/null
+++ b/args.h
@@ -0,0 +1,9 @@
+#ifndef ARGS_H_
+#define ARGS_H_
+
+#include "common.h"
+
+void help();
+partresult parseArgs(int argc, char ** argv, State * state);
+
+#endif // ARGS_H_
diff --git a/common.c b/common.c
new file mode 100644
index 0000000..a4671a3
--- /dev/null
+++ b/common.c
@@ -0,0 +1,14 @@
+#include "common.h"
+
+State createDefaultState()
+{
+    return (State) {
+        .term = {0},
+        .conf = {
+            "",
+            0,
+            PARTMODEINVALID,
+        },
+        .messages = daCreate(char *, 64),
+    };
+}
diff --git a/common.h b/common.h
new file mode 100644
index 0000000..24e2610
--- /dev/null
+++ b/common.h
@@ -0,0 +1,37 @@
+#ifndef COMMON_H_
+#define COMMON_H_
+
+#include <stdint.h>
+
+#include "term.h"
+
+#include "da.h"
+
+#define IPADDRLEN 15
+
+typedef int fd_t;
+
+typedef enum OperationMode {
+    PARTMODEINVALID = 0,
+    PARTSERVER      = 1,
+    PARTCLIENT      = 2,
+    PARTMODECOUNT   = 3,
+} OperationMode;
+
+typedef struct Config {
+    char ip[IPADDRLEN];
+    uint16_t port;
+    OperationMode mode;
+} Config;
+
+typedef struct State {
+    Term term;
+    Config conf;
+    dynarr(char *) messages;
+} State;
+
+State createDefaultState();
+
+typedef int partresult; // TODO: Implement proper error reporting system
+
+#endif // COMMON_H_
diff --git a/main.c b/main.c
index 3e29d3c..7986674 100644
--- a/main.c
+++ b/main.c
@@ -18,7 +18,9 @@
 #include <bits/pthreadtypes.h>
 #include <wchar.h>
 
+#include "args.h"
 #include "term.h"
+#include "common.h"
 
 #define DA_IMPLEMENTATION
 #include "da.h"
@@ -32,12 +34,12 @@ enum {
     THREAD_COUNT = 2,
 };
 
-typedef int fd_t;
-
 void * sender(void * arg)
 {
     fd_t * connFd = arg;
 
+    (void) connFd;
+
     return NULL;
 }
 
@@ -122,14 +124,9 @@ void serve()
     close(sockFd);
 }
 
-typedef struct State {
-    Term term;
-    dynarr(char *) messages;
-} State;
-
 void draw(State * state)
 {
-    int x, y;
+    size_t x, y;
     getmaxyx(stdscr, y, x);
     if (state->term.termX != x ||
         state->term.termY != y)
@@ -172,7 +169,7 @@ void loop(State * state)
             daBzero(buffer);
             state->term.inputX = 1;
 
-            for (size_t i = 1; i < getmaxx(state->term.input) - 1; ++i)
+            for (int i = 1; i < getmaxx(state->term.input) - 1; ++i)
                 mvwprintw(state->term.input, state->term.inputY, i, " ");
 
             break;
@@ -189,6 +186,7 @@ void loop(State * state)
 
         case KEY_UP:
         case KEY_DOWN:
+        case KEY_RESIZE:
             break;
 
         case KEY_BACKSPACE:
@@ -207,9 +205,6 @@ void loop(State * state)
             recreateWindows(&state->term);
             break;
 
-        case 410: /* F11 */
-            break;
-
         default:
             if (state->term.inputX < getmaxx(state->term.input) - 2)
             {
@@ -226,21 +221,32 @@ void loop(State * state)
     daFree(buffer);
 }
 
-int main(void)
+int main(int argc, char ** argv)
 {
-    State state = {
-        .term = { },
-        .messages = daCreate(char *, 64),
-    };
+    int ret = 0;
+    State state = createDefaultState();
 
-    loop(&state);
-
-    for (size_t i = 0; i < daSize(state.messages); ++i)
+    partresult result = parseArgs(argc, argv, &state);
+    if (result < 0)
     {
-        free(state.messages[i]);
+        fprintf(stderr, "ERROR:  Parsing of command line arguments failed!\n");
+        ret = 1;
+        goto exit;
     }
 
+    printf("IP: %s\n", state.conf.ip);
+    printf("PORT: %d\n", state.conf.port);
+    printf("MODE: %d\n", state.conf.mode);
+
+    // loop(&state);
+
+    // for (size_t i = 0; i < daSize(state.messages); ++i)
+    // {
+    //     free(state.messages[i]);
+    // }
+
+exit:
     daFree(state.messages);
 
-    return 0;
+    return ret;
 }