// Kyler Olsen
// YREA SLS
// Lexer Tests
// October 2025

#include <stdlib.h>
#include <stdint.h>

#include "sls/sls_errors.h"
#include "sls/lexer.h"
#include "tests/tests.h"

static const size_t NUM_OF_TESTS = 1;

typedef struct {
    TestResult result;
    LexerInfo lexer_info;
} LexerTest;

static LexerTest start_up_test(const char *test_name, const char *test_code) {
    LexerTest test = (LexerTest) {
        .result = (TestResult) { .name = test_name, .success = 0 } };
    lexer_init(&test.lexer_info, TEST_FILE_NAME, test_code);
    return test;
}

static void clean_up_test(LexerResult result) {
    if (result.type == SLS_RESULT)
        clean_token_result(result.result);
}

static TestResult logic_fail_test(LexerTest test, LexerResult result, const char *message) {
    clean_up_test(result);
    test.result.success = 0;
    test.result.message = message;
    return test.result;
}

static TestResult error_fail_test(LexerTest test, LexerResult result, SlsError error) {
    clean_up_test(result);
    test.result.success = 0;
    test.result.error = error;
    return test.result;
}

static TestResult pass_test(LexerTest test, LexerResult result) {
    clean_up_test(result);
    test.result.success = 1;
    return test.result;
}

static TestResult test_add_statement() {
    LexerTest test = start_up_test("test_add_statement", "3 4 +");

    LexerResult result = lexical_analysis(&test.lexer_info);

    if (result.type == SLS_ERROR)
        return fail_test(test, result, result.error.message);

    LexerTokenResult *head = result.result;

    if (head->type == SLS_ERROR)
        return fail_test(test, result, result.error.message);
    if (head->result.type != TOKEN_INTEGER)
        return fail_test(test, result);
    if (head->result.integer_literal.type != INTEGER_I64)
        return fail_test(test, result);
    if (head->result.integer_literal.value != 3)
        return fail_test(test, result);

    return pass_test(test, result);
}

TestsReport run_lexer_tests() {
    TestsReport test_report = (TestsReport){
        .section = "lexer_tests",
        .count = NUM_OF_TESTS,
        .tests = malloc(sizeof(TestResult) * NUM_OF_TESTS),
    };

    test_report.tests[0] = test_add_statement();

    return test_report;
}