/**
 * \file
 * \brief Hello world application
 */

/*
 * Copyright (c) 2016 ETH Zurich.
 * All rights reserved.
 *
 * This file is distributed under the terms in the attached LICENSE file.
 * If you do not find this file, copies can be found by writing to:
 * ETH Zurich D-INFK, CAB F.78, Universitaetstr. 6, CH-8092 Zurich,
 * Attn: Systems Group.
 */


#include <stdio.h>
#include <string.h>

#include <aos/aos.h>
#include <aos/aos_rpc.h>
#include <aos/deferred.h>

#define HELLO_CATCH_COMMAND "catch"
#define HELLO_SPAWN_COMMAND "spawn"

int main(int argc, char *argv[])
{
    errval_t err;
    printf("Hello, world!\n");

    printf("argv:\n");
    for(int i = 0; i < argc; ++i) {
        printf("  %d -> %s\n", i, argv[i]);
    }

    struct aos_rpc *rpc = aos_rpc_get_init_channel();
    err = aos_rpc_send_number(rpc, 1234);
    if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to send RPC");

    err = aos_rpc_send_string(rpc, "Hello World via RPC!");
    if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to send RPC");

    // try to spawn a child using rpc
    if (argc > 1 && !strncmp(argv[1], HELLO_SPAWN_COMMAND, sizeof(HELLO_SPAWN_COMMAND))) {
        // start process
        domainid_t pid;
        rpc = aos_rpc_get_process_channel();
        err = aos_rpc_process_spawn(rpc, "hello Aurel Jan Sandro", 0, &pid);
        if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to spawn process");
        printf("Started a new process!\n");
        
        // get process name
        char *name;
        err = aos_rpc_process_get_name(rpc, pid, &name);
        if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to get process name");
        printf("Process Name: %s\n", name);

        // get all PIDs
        domainid_t *pids;
        size_t pid_count;
        err = aos_rpc_process_get_all_pids(rpc, &pids, &pid_count);
        if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to get all PIDs");
        printf("PIDs:\n");
        for(size_t i = 0; i < pid_count; ++i) {
            printf(" %lu\n", pids[i]);
        }
    }

    // if we receive the catch command, RUN!
    if (argc > 1 && !strncmp(argv[1], HELLO_CATCH_COMMAND, sizeof(HELLO_CATCH_COMMAND))) {
        int iter = 0;
        while(1) {
            printf("Catch me if you can! %d\n", iter);
            // wait for 1 second
            barrelfish_usleep(1000000);
            ++iter;
        }
    }

    return EXIT_SUCCESS;
}