#include "../../unity/unity.h"
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>

/* ==================== Setup / Teardown ==================== */
void setUp(void) {
    /* Nothing specific to set up before each test */
}

void tearDown(void) {
    /* Nothing specific to clean up after each test */
}

/* ==================== Helper Functions ==================== */
/* Allocate a dummy fileinfo for testing */
static struct fileinfo* create_dummy_file(const char *name) {
    struct fileinfo *f = malloc(sizeof(struct fileinfo));
    if (!f) return NULL;
    f->name = malloc(strlen(name) + 1);
    if (!f->name) { free(f); return NULL; }
    strcpy(f->name, name);
    return f;
}

/* ==================== Tests ==================== */

void test_clear_files_no_files(void) {
    /* Edge case: no files in sorted_file */
    cwd_n_used = 0;
    sorted_file = NULL;
    cwd_some_quoted = true;
    any_has_acl = true;
    inode_number_width = 5;

    clear_files();

    TEST_ASSERT_EQUAL_UINT(0, cwd_n_used);
    TEST_ASSERT_FALSE(cwd_some_quoted);
    TEST_ASSERT_FALSE(any_has_acl);
    TEST_ASSERT_EQUAL_INT(0, inode_number_width);
}

void test_clear_files_single_file(void) {
    cwd_n_used = 1;
    sorted_file = malloc(sizeof(struct fileinfo*) * cwd_n_used);
    sorted_file[0] = create_dummy_file("file1");
    cwd_some_quoted = true;
    any_has_acl = true;
    inode_number_width = 3;

    clear_files();

    TEST_ASSERT_EQUAL_UINT(0, cwd_n_used);
    TEST_ASSERT_FALSE(cwd_some_quoted);
    TEST_ASSERT_FALSE(any_has_acl);
    TEST_ASSERT_EQUAL_INT(0, inode_number_width);
}

void test_clear_files_multiple_files(void) {
    cwd_n_used = 3;
    sorted_file = malloc(sizeof(struct fileinfo*) * cwd_n_used);
    sorted_file[0] = create_dummy_file("file1");
    sorted_file[1] = create_dummy_file("file2");
    sorted_file[2] = create_dummy_file("file3");
    cwd_some_quoted = true;
    any_has_acl = true;
    inode_number_width = 8;
    block_size_width = 4;
    owner_width = 10;

    clear_files();

    TEST_ASSERT_EQUAL_UINT(0, cwd_n_used);
    TEST_ASSERT_FALSE(cwd_some_quoted);
    TEST_ASSERT_FALSE(any_has_acl);
    TEST_ASSERT_EQUAL_INT(0, inode_number_width);
    TEST_ASSERT_EQUAL_INT(0, block_size_width);
    TEST_ASSERT_EQUAL_INT(0, owner_width);
}

void test_clear_files_edge_values(void) {
    /* All globals set to nonzero / true before call */
    cwd_n_used = 2;
    sorted_file = malloc(sizeof(struct fileinfo*) * cwd_n_used);
    sorted_file[0] = create_dummy_file("a");
    sorted_file[1] = create_dummy_file("b");

    cwd_some_quoted = true;
    any_has_acl = true;
    inode_number_width = 99;
    block_size_width = 99;
    nlink_width = 99;
    owner_width = 99;
    group_width = 99;
    author_width = 99;
    scontext_width = 99;
    major_device_number_width = 99;
    minor_device_number_width = 99;
    file_size_width = 99;

    clear_files();

    TEST_ASSERT_EQUAL_UINT(0, cwd_n_used);
    TEST_ASSERT_FALSE(cwd_some_quoted);
    TEST_ASSERT_FALSE(any_has_acl);
    TEST_ASSERT_EQUAL_INT(0, inode_number_width);
    TEST_ASSERT_EQUAL_INT(0, block_size_width);
    TEST_ASSERT_EQUAL_INT(0, nlink_width);
    TEST_ASSERT_EQUAL_INT(0, owner_width);
    TEST_ASSERT_EQUAL_INT(0, group_width);
    TEST_ASSERT_EQUAL_INT(0, author_width);
    TEST_ASSERT_EQUAL_INT(0, scontext_width);
    TEST_ASSERT_EQUAL_INT(0, major_device_number_width);
    TEST_ASSERT_EQUAL_INT(0, minor_device_number_width);
    TEST_ASSERT_EQUAL_INT(0, file_size_width);
}

/* ==================== Main ==================== */
int main(void) {
    UNITY_BEGIN();

    RUN_TEST(test_clear_files_no_files);
    RUN_TEST(test_clear_files_single_file);
    RUN_TEST(test_clear_files_multiple_files);
    RUN_TEST(test_clear_files_edge_values);

    return UNITY_END();
}