/**
 * Copyright (c) 2007-2012, Timothy Stack
 *
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * * Neither the name of Timothy Stack nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>

#include <algorithm>

#include "logfile.hh"
#include "log_format.hh"
#include "log_format_loader.hh"

using namespace std;

typedef enum {
    MODE_NONE,
    MODE_ECHO,
    MODE_LINE_COUNT,
    MODE_TIMES,
    MODE_LEVELS,
} dl_mode_t;

time_t time(time_t *_unused)
{
    return 1194107018;
}

int main(int argc, char *argv[])
{
    int c, retval = EXIT_SUCCESS;
    dl_mode_t mode = MODE_NONE;
    string expected_format;

    {
        std::vector<std::string> errors;
        vector<ghc::filesystem::path> paths;

        if (getenv("test_dir") != NULL) {
            paths.push_back(getenv("test_dir"));
        }
        load_formats(paths, errors);
    }

    while ((c = getopt(argc, argv, "ef:ltv")) != -1) {
        switch (c) {
            case 'f':
                expected_format = optarg;
                break;
            case 'e':
                mode = MODE_ECHO;
                break;
            case 'l':
                mode = MODE_LINE_COUNT;
                break;
            case 't':
                mode = MODE_TIMES;
                break;
            case 'v':
                mode = MODE_LEVELS;
                break;
        }
    }

    argc -= optind;
    argv += optind;

    if (retval == EXIT_FAILURE) {
    } else if (argc == 0) {
        fprintf(stderr, "error: expecting log file name\n");
    } else {
        try {
            logfile_open_options default_loo;
            logfile lf(argv[0], default_loo);
            struct stat st;

            stat(argv[0], &st);
            assert(strcmp(argv[0], lf.get_filename().c_str()) == 0);

            lf.rebuild_index();
            assert(!lf.is_closed());
            lf.rebuild_index();
            assert(!lf.is_closed());
            lf.rebuild_index();
            assert(!lf.is_closed());
            assert(lf.get_activity().la_polls == 3);
            if (lf.size() > 1) {
                assert(lf.get_activity().la_reads == 2);
            }
            if (expected_format == "") {
                assert(lf.get_format() == NULL);
            } else {
                //printf("%s %s\n", lf.get_format()->get_name().c_str(), expected_format.c_str());
                assert(lf.get_format() != NULL);
                assert(
                    lf.get_format()->get_name().to_string() == expected_format);
            }
            if (!lf.is_compressed()) {
                assert(lf.get_modified_time() == st.st_mtime);
            }

            switch (mode) {
                case MODE_NONE:
                    break;
                case MODE_ECHO:
                    for (logfile::iterator iter = lf.begin();
                         iter != lf.end(); ++iter) {
                        auto sbr = lf.read_line(iter).unwrap();

                        printf("%.*s\n", (int) sbr.length(), sbr.get_data());
                    }
                    break;
                case MODE_LINE_COUNT:
                    printf("%zd\n", lf.size());
                    break;
                case MODE_TIMES:
                    for (logfile::iterator iter = lf.begin();
                         iter != lf.end(); ++iter) {
                        if (iter->is_ignored()) {
                            continue;
                        }

                        char buffer[1024];
                        time_t lt;

                        lt = iter->get_time();
                        strftime(buffer, sizeof(buffer),
                                 "%b %d %H:%M:%S %Y",
                                 gmtime(&lt));
                        printf("%s -- %03d\n", buffer, iter->get_millis());
                    }
                    break;
                case MODE_LEVELS:
                    for (logfile::iterator iter = lf.begin();
                         iter != lf.end(); ++iter) {
                        log_level_t level = iter->get_level_and_flags();
                        printf("%s 0x%x\n", level_names[level & ~LEVEL__FLAGS],
                               level & LEVEL__FLAGS);
                    }
                    break;
            }
        } catch (const logfile::error &e) {
            fprintf(stderr, "logfile error -- %s (%d)", e.e_filename.c_str(),
                    e.e_err);
            assert(false);
        }
    }

    return retval;
}