/// @file
/// @brief Task3: tests of output files generated by other tests/commands using command line arguments for task3_main

#include "modules/iue-io/ccsv.h"      // iueio_loadtxt
#include "modules/iue-num/numerics.h" // iuenum_isclose

#include <assert.h>  // assert
#include <stdbool.h> // bool, true, false
#include <stdio.h>   // printf

bool isclose(const struct Table* a, const struct Table* b) {
  if (a->n != b->n)
    return false;

  for (size_t r = 0; r != a->n; ++r) {
    if (a->rows[r].n != a->rows[r].n)
      return false;
    for (size_t c = 0; c != a->rows[r].n; ++c)
      if (!iuenum_isclose(a->rows[r].values[c], b->rows[r].values[c]))
        return false;
  }
  return true;
}

int main() {

  { // testing result of this command:
    // "./build/task3_main --left rrev4x4.csv --right matrix4x2.csv --out matrix4x2_rrow.csv"

    double data_expected[4][2] = {
        {41, 42},
        {31, 32},
        {21, 22},
        {11, 12},
    };

    struct Table expected = {NULL, 0};
    table_append_copy(&expected, data_expected[0], 2);
    table_append_copy(&expected, data_expected[1], 2);
    table_append_copy(&expected, data_expected[2], 2);
    table_append_copy(&expected, data_expected[3], 2);

    const char filepath[] = "matrix4x2_rrow.csv";
    struct Table table = {NULL, 0};

    if (iueio_loadtxt(filepath, &table, ';', '#') != 0) {
      fprintf(stderr, "error loading file %s\n", filepath);
      exit(EXIT_FAILURE);
    }

    assert(isclose(&table, &expected));
    table_clear(&table);
    table_clear(&expected);
  }

  { // testing result of this command:
    // "./build/task3_main --left matrix4x2.csv --right rcol2x2.csv --out matrix4x2_rcols.csv"

    double data_expected[4][2] = {
        {12, 11},
        {22, 21},
        {32, 31},
        {42, 41},
    };

    struct Table expected = {NULL, 0};
    table_append_copy(&expected, data_expected[0], 2);
    table_append_copy(&expected, data_expected[1], 2);
    table_append_copy(&expected, data_expected[2], 2);
    table_append_copy(&expected, data_expected[3], 2);

    const char filepath[] = "matrix4x2_rcols.csv";
    struct Table table = {NULL, 0};

    if (iueio_loadtxt(filepath, &table, ';', '#') != 0) {
      fprintf(stderr, "error loading file %s\n", filepath);
      exit(EXIT_FAILURE);
    }

    assert(isclose(&table, &expected));
    table_clear(&table);
    table_clear(&expected);
  }

  printf("task3.test.c: all asserts passed\n");

  return 0;
}