#include "oopless-parser.hpp"
#include "catch.hpp"
#include <iostream>
#include <algorithm>
#include <iterator>
#include <sstream>
using namespace std;

vector<string> readin(const string &filename, const int ln = 0) {
    ifstream fin;
    fin.open(filename);
    if (!fin.good()) {
        cerr << "error: can not open file with test cases." << endl;
    }
    vector<string> output;
    string data;
    while (getline(fin, data)) {
        output.push_back(data);
    }
    return output;
}

bool test_parseface(const string &filename, const int &cnt_indices) {
    vector<string> test = readin(filename);
    stringstream ss;
    copy(test.begin(), test.end(), ostream_iterator<string>(ss, "\n"));
    vector<TFace> x = parse_face<stringstream>(ss);
    bool is_ok = true;
    for (struct TFace face : x) {
        if (face.m_Indices.size() != cnt_indices) {
            is_ok = false;
            break;
        }
    }
    return is_ok;
}

TEST_CASE ( "face parsing case: faces with 3 indices " ) {
    bool k = test_parseface("cases-faces/parser-face-3indices.txt", 3);
    REQUIRE (k == true);
}

TEST_CASE ("face parsing case: faces with 4 indices ") {
    bool k = test_parseface("cases-faces/parser-face-4indices.txt", 4);
    REQUIRE (k == true);
}

TEST_CASE ("face parsing case: faces with 5 indices ") {
    bool k = test_parseface("cases-faces/parser-face-5indices.txt", 5);
    REQUIRE (k == true);
}