#include "stdafx.h"
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <fstream>
#include <map>

using namespace std;
using isstream = istringstream;

vector<string> split_stream(istream &strm, const char delim)
{
    vector<string> result;
    string buf;
    while (std::getline(strm, buf, delim))
    {
        result.push_back(buf);
    }
    return result;
};

vector<string> split(const string &str, const char delim)
{
    isstream isstrm(str);
    return split_stream(isstrm, delim);
};

pair<string, string> split_by_first(const string &str, const char delim)
{
    size_t index = str.find_first_of(delim);
    return pair<string, string>(str.substr(0, index), str.substr(index + 1));
};

pair<string, map<string, string>> parse(const string &str)
{
    map<string, string> result;
    pair<string, string> tmp = split_by_first(str, ' '); //first in pair is event type
    vector<string> properties = split(tmp.second, ',');
    for (string i : properties)
    {
        pair<string, string> tmp2 = split_by_first(i, '=');
        result.insert(pair<string, string>(tmp2.first, tmp2.second)); //second in pair is map of properties
    }
    return pair<string, map<string, string>>(tmp.first, result);
};

vector<pair<string, map<string, string>>> parse_all(const vector<string> &strings)
{
    vector<pair<string, map<string, string>>> result;
    for (string i : strings)
    {
        result.push_back(parse(i));
    }
    return result;
}

void print_out(vector<pair<string, map<string, string>>> &events)
{
    for (pair<string, map<string, string>> e : events)
    {
        cout << "Event: " << e.first << endl;
        for (pair<string, string> h : e.second)
        {
            cout << '\t' << h.first << ": " << h.second << endl;
        }
    }
};

int main()
{
    string answer("./raw.log");
    cout << "path to file with raw logs (./raw.log): ";
    std::cin >> answer;
    ifstream raw_logs(answer);
    if (!raw_logs.is_open())
    {
        cout << "ERROR: cannot open file." << endl;
        return 1;
    }
    auto parsed_events = parse_all(split_stream(raw_logs, '\n'));
    cout << "Parsed events:\n" << endl;
    print_out(parsed_events);
    system("pause");
    return 0;
}