#include <stdio.h>
#include <stdlib.h>

#include "config.h"
#include "discovery.h"
#include "transport.h"
#include "error.h"

/*
 * Example schema covering node identity, discovery, and transport.
 * Each module would normally provide its own schema table; they are
 * combined here for the CLI demo.
 */

static const struct Config_Flag_Def function_flag_defs[] = {
	{ "source",     DISCOVERY_FLAG_SOURCE     },
	{ "relay",      DISCOVERY_FLAG_RELAY      },
	{ "sink",       DISCOVERY_FLAG_SINK       },
	{ "controller", DISCOVERY_FLAG_CONTROLLER },
	{ NULL, 0 }
};

static const struct Config_Def schema[] = {
	/* section       key                   type               default */
	{ "node",       "name",               CONFIG_STRING,     "unnamed:0",  NULL              },
	{ "node",       "site_id",            CONFIG_UINT16,     "0",          NULL              },
	{ "node",       "tcp_port",           CONFIG_UINT16,     "8000",       NULL              },
	{ "node",       "function",           CONFIG_FLAGS,      "source",     function_flag_defs },

	{ "discovery",  "interval_ms",        CONFIG_UINT32,     "5000",       NULL              },
	{ "discovery",  "timeout_intervals",  CONFIG_UINT32,     "3",          NULL              },
	{ "discovery",  "connect_mask",       CONFIG_FLAGS,      "",           function_flag_defs },

	{ "transport",  "max_connections",    CONFIG_UINT32,     "16",         NULL              },
	{ "transport",  "max_payload",        CONFIG_UINT32,     "16777216",   NULL              },

	{ NULL }
};

static void usage(void) {
	fprintf(stderr,
		"usage: config_cli <file>\n"
		"       config_cli --defaults\n"
		"\n"
		"  <file>       load config file and print effective values\n"
		"  --defaults   print schema defaults without a file\n");
}

int main(int argc, char **argv) {
	if (argc < 2) {
		usage();
		return 1;
	}

	struct Config *cfg;
	struct App_Error err;

	if (argv[1][0] == '-') {
		err = config_defaults(&cfg, schema);
	} else {
		err = config_load(&cfg, argv[1], schema);
	}

	if (!APP_IS_OK(err)) {
		fprintf(stderr, "config_load: errno %d\n", err.detail.syscall.err_no);
		return 1;
	}

	config_dump(cfg);

	config_free(cfg);
	return 0;
}