#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <unistd.h>

#define main swmctl_program_main
#include "swmctl.c"
#undef main

static void expect_invalid_color(const char *value) {
    pid_t child = fork();
    int   status;

    assert(child >= 0);
    if (!child) {
        int nullfd = open("/dev/null", O_WRONLY);

        assert(nullfd >= 0);
        assert(dup2(nullfd, STDERR_FILENO) >= 0);
        close(nullfd);
        parse_color(value);
        _exit(EXIT_SUCCESS);
    }
    assert(waitpid(child, &status, 0) == child);
    assert(WIFEXITED(status));
    assert(WEXITSTATUS(status) == EXIT_FAILURE);
}

/* Verify active-window updates and single-line title output. */
static void test_active_window_events(void) {
    event_window_t first       = { .title = "one", .active = true, .ready = true };
    event_window_t second      = { .title = "two", .ready = true };
    char           output[128] = { 0 };
    FILE          *capture     = tmpfile();
    int            saved;

    assert(capture && fflush(stdout) == 0);
    saved = dup(STDOUT_FILENO);
    assert(saved >= 0 && dup2(fileno(capture), STDOUT_FILENO) >= 0);
    wl_list_init(&event_windows);
    wl_list_insert(event_windows.prev, &first.link);
    wl_list_insert(event_windows.prev, &second.link);

    publish_active_window();
    publish_active_window();
    second.title = "renamed";
    publish_active_window();
    first.title = "one\nchanged";
    first.ready = false;
    publish_active_window();
    first.ready = true;
    publish_active_window();
    first.active  = false;
    second.active = true;
    publish_active_window();
    second.active = false;
    publish_active_window();

    assert(dup2(saved, STDOUT_FILENO) >= 0);
    close(saved);
    rewind(capture);
    assert(fread(output, 1, sizeof(output) - 1, capture) > 0);
    assert(!strcmp(output, "one\none changed\nrenamed\n\n"));
    fclose(capture);
}

int main(void) {
    char  escaped[64] = {};
    FILE *stream      = tmpfile();

    assert(stream);
    print_window_field(stream, "title\x1b[2J");
    rewind(stream);
    assert(fread(escaped, 1, sizeof(escaped) - 1, stream) > 0);
    assert(!strcmp(escaped, "title\\x1b[2J"));
    assert(fclose(stream) == 0);
    assert(parse_color("#012345") == 0x012345ff);
    assert(parse_color("#01234567") == 0x01234567);
    expect_invalid_color("# 12345");
    expect_invalid_color("#+12345");
    test_active_window_events();
    return EXIT_SUCCESS;
}