example: Add ping command

Unfortunately, we need to manually add the command to discords'
registries for now :(
Am working on an abstraction layer that will allow you to add commands
easier (much like how me adding this command is simply adding this file
to the project, except there is a macro and it will register the command
automatically for you and the interaction event will have a default
handler)

1 files changed, 105 insertions, 0 deletions

diff --git a/example/ping.c b/example/ping.c
new file mode 100644
index 0000000..79cb915
--- /dev/null
+++ b/example/ping.c
@@ -0,0 +1,105 @@
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <curl/curl.h>
+#include <cJSON.h>
+
+#include <dbs/api.h>
+#include <dbs/event.h>
+#include <dbs/init.h>
+#include <dbs/log.h>
+#include <dbs/util.h>
+
+extern char *app_id;
+extern double api_latency;
+
+static void ping(cJSON *i)
+{
+    struct curl_slist *headers = curl_slist_append(NULL, "Content-type: application/json");
+    headers = curl_slist_append(headers, "User-Agent: DiscordBot (DBS, dev)");
+
+    char *i_id = js_getStr(i, "id");
+    char *i_token = js_getStr(i, "token");
+    char *url = malloc(strlen("/interactions/") + strlen(i_id) + strlen("/") + strlen(i_token) + strlen("/messages/@original") + 2);
+
+    sprintf(url, "/interactions/%s/%s/callback", i_id, i_token);
+    char *defer_message = "{\"type\":5}";
+
+    struct timeval sent;
+    struct timeval done;
+
+    long code;
+    gettimeofday(&sent, NULL);
+    close(api_post(url, headers, defer_message, &code));
+    gettimeofday(&done, NULL);
+
+    char *response = malloc(128);
+    snprintf(response, 128, "{\"embeds\":[{\"title\": \"PONG!\", \"description\": \"Measured API Latency: %.4fms\\nWS Latency: %.4fms\"}]}",
+            (done.tv_sec - sent.tv_sec) * 1000.0f + (done.tv_usec - sent.tv_usec) / 1000.0f,
+            api_latency);
+    sprintf(url, "/webhooks/%s/%s/messages/@original", app_id, i_token);
+    headers = curl_slist_append(NULL, "Content-type: application/json");
+    headers = curl_slist_append(headers, "User-Agent: DiscordBot (DBS, dev)");
+
+    close(api_patch(url, headers, response, &code));
+
+    free(response);
+    free(url);
+}
+
+static void hi(cJSON *i)
+{
+
+    char *i_id = js_getStr(i, "id");
+    char *i_token = js_getStr(i, "token");
+    char *url = malloc(strlen("/interactions/") + strlen(i_id) + strlen("/") + strlen(i_token) + strlen("/callback") + 2);
+    sprintf(url, "/interactions/%s/%s/callback", i_id, i_token);
+
+    char *message = "{\"type\": 4,\"data\":{\"type\":4,\"flags\": 0,\"content\":\"hello world!\"}}";
+    long code;
+
+    struct curl_slist *headers = curl_slist_append(NULL, "Content-type: application/json");
+    headers = curl_slist_append(headers, "User-Agent: DiscordBot (DBS, dev)");
+    close(api_post(url, headers, message, &code));
+
+    free(url);
+}
+
+int interaction_create(cJSON *ev_data)
+{
+    int i_type = js_getInt(ev_data, "type");
+    cJSON *i = cJSON_GetObjectItemCaseSensitive(ev_data, "data");
+
+    switch(i_type) {
+    case 1: ; /* PING */
+        break;
+    case 2: ; /* APPLICATION_COMMAND */
+        int cmd_type = js_getInt(i, "type");
+        if(cmd_type == -1) cmd_type = 1;
+        char *cmd_name = js_getStr(i, "name");
+        if(strcmp(cmd_name, "ping") == 0) {
+            ping(ev_data);
+            return 0;
+        } else if(strcmp(cmd_name, "hi") == 0) {
+            hi(ev_data);
+            return 0;
+        }
+        break;
+    case 3: ; /* MESSAGE_COMPONENT */
+        break;
+    case 4: ; /* APPLICATION_COMMAND_AUTOCOMPLETE */
+        break;
+    case 5: ; /* MODAL_SUBMIT */
+        break;
+    default:
+        break;
+    }
+
+    char *payload = cJSON_Print(ev_data);
+    print("inter_create: payload (see below)\n%s", payload);
+    free(payload);
+
+    return 1;
+}
+declare_event(INTERACTION_CREATE, interaction_create);