#include <zinnia/alloc.h>
#include <zinnia/panic.h>
#include <zinnia/print.h>
#include <zinnia/syscall.h>
#include <zinnia/usercopy.h>
#include <stdint.h>

enum syslog_kind : uintptr_t {
    SYSLOG_EMERG = 0,
    SYSLOG_ALERT = 1,
    SYSLOG_CRIT = 2,
    SYSLOG_ERR = 3,
    SYSLOG_WARNING = 4,
    SYSLOG_NOTICE = 5,
    SYSLOG_INFO = 6,
    SYSLOG_DEBUG = 7,
};

struct syscall_ret sys_syslog(enum syslog_kind kind, __user char* message, size_t len) {
    struct syscall_ret ret = {};

    const size_t buf_len = MIN(len + 1, 256);
    char* buf = mem_alloc(buf_len, ALLOC_NOZERO);
    if (!usercopy_read(buf, message, buf_len - 1)) {
        mem_free(buf);

        ret.error = EFAULT;
        return ret;
    }
    buf[buf_len - 1] = 0;

    const char* log_level;
    switch (kind) {
    case SYSLOG_EMERG:
        log_level = "emerg";
        break;
    case SYSLOG_ALERT:
        log_level = "alert";
        break;
    case SYSLOG_CRIT:
        log_level = "crit";
        break;
    case SYSLOG_ERR:
        log_level = "err";
        break;
    case SYSLOG_WARNING:
        log_level = "warning";
        break;
    case SYSLOG_NOTICE:
        log_level = "notice";
        break;
    case SYSLOG_INFO:
        log_level = "info";
        break;
    case SYSLOG_DEBUG:
        log_level = "debug";
        break;
    default:
        log_level = "invalid";
    }

    log("syslog(%s): %s\n", log_level, buf);

    mem_free(buf);

    return ret;
}