command: add command decl sys

additionally, edit ping to use new abstractions and command declaration
facilities.  TODO: move interaction create event to somewhere else. this
spot isnt too good for it.

1 files changed, 60 insertions, 0 deletions

diff --git a/include/dbs/commands.h b/include/dbs/commands.h
new file mode 100644
index 0000000..181a2c0
--- /dev/null
+++ b/include/dbs/commands.h
@@ -0,0 +1,60 @@
+#ifndef DBS_COMMANDS_H
+#define DBS_COMMANDS_H
+
+enum CommandType {
+    COMMAND_CHAT_INPUT = 1,
+    COMMAND_USER = 2,
+    COMMAND_MESSAGE = 3,
+    COMMAND_PRIMARY_ENTRY_POINT = 4
+};
+
+enum CommandOptionType {
+    OPTION_SUB_COMMAND = 1,
+    OPTION_SUB_COMMAND_GROUP = 2,
+    OPTION_STRING = 3,
+    OPTION_INTEGER = 4,
+    OPTION_BOOLEAN = 5,
+    OPTION_USER = 6,
+    OPTION_CHANNEL = 7,
+    OPTION_ROLE = 8,
+    OPTION_MENTIONABLE = 9,
+    OPTION_NUMBER = 10,
+    OPTION_ATTACHMENT = 11
+};
+
+struct command_option {
+    enum CommandOptionType type;
+    char *name;
+    char *description;
+    int required;
+    char **choices;
+    int **choices_int;
+    struct command_option **options;
+    int channel_types;
+    int min_value;
+    int max_value;
+    int min_length;
+    int max_length;
+    int autocomplete;
+};
+typedef struct command_option CommandOption;
+
+struct command {
+    enum CommandType type;
+    char *name;
+    char *description;
+    CommandOption *options;
+    void (*callback)(cJSON*);
+};
+typedef struct command Command;
+
+extern Command *commands;
+
+#define declare_command(command) \
+    void command_register_##command(void) { \
+        command ## _command.callback = &command; \
+        arrput(commands, command ## _command); \
+    } \
+    l3_initcall(command_register_##command)
+
+#endif