#include <stdlib.h>
#include <unity.h>
#include <string.h>

#include "testing_helpers.h"

#include "uclisp.h"
#include "common.h"

static struct ucl *state;
static struct ucl_object *input;
static struct ucl_object *response;

void setUp(void) {
    state = ucl_create();
    input = NULL;
    response = NULL;
}

void tearDown(void) {
    // TODO: Release memory
    state = NULL;
    input = NULL;
    response = NULL;
}

static void test_nil_create(void) {
    response = ucl_nil_create(state);

    TEST_ASSERT_NIL(response);
}

static void test_t_create(void) {
    response = ucl_t_create(state);

    TEST_ASSERT_T(response);
}

static void test_predicate_true(void) {
    response = ucl_predicate(state, true);

    TEST_ASSERT_T(response);
}

static void test_predicate_false(void) {
    response = ucl_predicate(state, false);

    TEST_ASSERT_NIL(response);
}

static void test_car_nil(void) {
    response = ucl_car(state, ucl_nil_create(state));

    TEST_ASSERT_NIL(response);
}

static void test_cdr_nil(void) {
    response = ucl_cdr(state, ucl_nil_create(state));

    TEST_ASSERT_NIL(response);
}

static void test_car_t(void) {
    response = ucl_car(state, ucl_t_create(state));

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_cdr_t(void) {
    response = ucl_car(state, ucl_t_create(state));

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_car_list(void) {
    input = ucl_tuple_create(state,
        ucl_string_create(state, "foo"),
        ucl_t_create(state));
    response = ucl_car(state, input);

    TEST_ASSERT_OBJ_STRING(response);
}

static void test_cdr_list(void) {
    input = ucl_tuple_create(state,
        ucl_t_create(state),
        ucl_string_create(state, "foo"));
    response = ucl_cdr(state, input);

    TEST_ASSERT_OBJ_STRING(ucl_car(state, response));
}

static void test_list_length_nil() {
    response = ucl_list_length(state, ucl_nil_create(state));

    TEST_ASSERT_OBJ_INT(response);
    TEST_ASSERT_EQUAL(response->integer, 0);
}

static void test_list_length_1() {
    response = ucl_list_length(
        state,
        ucl_cell_create(state,
            ucl_t_create(state), NULL));

    TEST_ASSERT_OBJ_INT(response);
    TEST_ASSERT_EQUAL(response->integer, 1);
}

static void test_list_length_2() {
    response = ucl_list_length(
        state,
        ucl_tuple_create(state,
            ucl_t_create(state),
            ucl_t_create(state)));

    TEST_ASSERT_OBJ_INT(response);
    TEST_ASSERT_EQUAL(response->integer, 2);
}


static void test_list_append_nil() {
    input = ucl_nil_create(state);
    ucl_list_append(state, input, ucl_t_create(state));

    TEST_ASSERT_EQUAL(ucl_list_length(state, input)->integer, 1);
}

static void test_list_append_list() {
    input = ucl_tuple_create(state, ucl_t_create(state), ucl_t_create(state));
    ucl_list_append(state, input, ucl_t_create(state));

    TEST_ASSERT_EQUAL(ucl_list_length(state, input)->integer, 3);
}

static void test_list_nth_nil_0() {
    response = ucl_list_nth(state, ucl_nil_create(state), 0);

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_list_nth_nil_1() {
    response = ucl_list_nth(state, ucl_nil_create(state), 1);

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_list_nth_list_0() {
    response = ucl_list_nth(
        state,
        ucl_tuple_create(state,
            ucl_t_create(state),
            ucl_string_create(state, "foo")),
        0);

    TEST_ASSERT_T(response);
}

static void test_list_nth_list_1() {
    response = ucl_list_nth(
        state,
        ucl_tuple_create(state,
            ucl_t_create(state),
            ucl_string_create(state, "foo")),
        1);

    TEST_ASSERT_OBJ_STRING(response);
}

static void test_list_nth_t_0() {
    response = ucl_list_nth(state, ucl_t_create(state), 1);

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_list_nth_bounds_0() {
    response = ucl_list_nth(state, ucl_nil_create(state), 0);

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_list_nth_bounds_1() {
    response = ucl_list_nth(
        state,
        ucl_cell_create(state,
            ucl_nil_create(state),
            NULL),
        1);

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_list_nth_bounds_2() {
    response = ucl_list_nth(
        state,
        ucl_tuple_create(state,
            ucl_nil_create(state),
            ucl_nil_create(state)),
        2);

    TEST_ASSERT_OBJ_ERROR(response);
}

static void test_truthy_0() {
    response = ucl_truthy(state, ucl_int_create(state, 0));

    TEST_ASSERT_NIL(response);
}

static void test_truthy_1() {
    response = ucl_truthy(state, ucl_int_create(state, 1));

    TEST_ASSERT_T(response);
}

static void test_truthy_nil() {
    response = ucl_truthy(state, ucl_nil_create(state));

    TEST_ASSERT_NIL(response);
}

static void test_truthy_list_w_elem() {
    struct ucl_object *list = ucl_nil_create(state);
    ucl_list_append(state, list, ucl_int_create(state, 0));
    response = ucl_truthy(state, list);

    TEST_ASSERT_T(response);
}

static void test_truthy_sym() {
    response = ucl_truthy(state, ucl_symbol_create(state, "t"));

    TEST_ASSERT_T(response);
}


int main(void) {
    UNITY_BEGIN();

    RUN_TEST(test_nil_create);
    RUN_TEST(test_t_create);
    RUN_TEST(test_predicate_true);
    RUN_TEST(test_predicate_false);
    RUN_TEST(test_car_nil);
    RUN_TEST(test_cdr_nil);
    RUN_TEST(test_car_t);
    RUN_TEST(test_cdr_t);
    RUN_TEST(test_car_list);
    RUN_TEST(test_cdr_list);
    RUN_TEST(test_list_length_nil);
    RUN_TEST(test_list_length_1);
    RUN_TEST(test_list_length_2);
    RUN_TEST(test_list_append_nil);
    RUN_TEST(test_list_append_list);
    RUN_TEST(test_list_nth_nil_0);
    RUN_TEST(test_list_nth_nil_1);
    RUN_TEST(test_list_nth_list_0);
    RUN_TEST(test_list_nth_list_1);
    RUN_TEST(test_list_nth_t_0);
    RUN_TEST(test_list_nth_bounds_0);
    RUN_TEST(test_list_nth_bounds_1);
    RUN_TEST(test_list_nth_bounds_2);
    RUN_TEST(test_truthy_0);
    RUN_TEST(test_truthy_1);
    RUN_TEST(test_truthy_nil);
    RUN_TEST(test_truthy_list_w_elem);
    RUN_TEST(test_truthy_sym);

    return UNITY_END();
}