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#define _POSIX_C_SOURCE 200809L
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <gtk-3.0/gtk/gtk.h>
#include "auth.h"
#include "http.h"
#include "timeline.h"
#include "window.h"

static GtkWidget *window;
static GtkWidget *box;
static GtkWidget *instance_name_box, *email_box, *password_box;
static GtkWidget *submit_button;
static GtkWidget *spinner;

static void login_callback(bool success)
{
    if (!success) {
        fprintf(stderr, "login_callback(): login failed\n");
        gtk_spinner_stop(GTK_SPINNER(spinner));
        return;
    }

    printf("login success\n");
    gtk_spinner_stop(GTK_SPINNER(spinner));
}

static void register_callback(bool success)
{
    if (!success) {
        gtk_spinner_stop(GTK_SPINNER(spinner));
        fprintf(stderr, "register_callback(): register failed\n");
        return;
    }
    printf("register success\n");

    const char *email, *password;
    email = gtk_entry_get_text(GTK_ENTRY(email_box));
    password = gtk_entry_get_text(GTK_ENTRY(password_box));

    if (login(email, password, &login_callback)) {
        gtk_spinner_stop(GTK_SPINNER(spinner));
        return;
    }
}

static void submit_login_form()
{
    gtk_spinner_start(GTK_SPINNER(spinner));
    const char *instance_name;
    instance_name = gtk_entry_get_text(GTK_ENTRY(instance_name_box));
    if (register_app(instance_name, &register_callback)) {
        gtk_spinner_stop(GTK_SPINNER(spinner));
        return;
    }
}

static void submit_button_clicked(GtkButton *button, gpointer user_data)
{
    submit_login_form();
}

static void form_on_activate(GtkEntry *entry, gpointer user_data)
{
    submit_login_form();
}

static bool is_form_valid()
{
    if (strlen(gtk_entry_get_text(GTK_ENTRY(instance_name_box))) < 1 ||
            strlen(gtk_entry_get_text(GTK_ENTRY(email_box))) < 1 ||
            strlen(gtk_entry_get_text(GTK_ENTRY(password_box))) < 1)
        return false;
    return true;
}

static void on_form_changed(GtkWidget *widget, gpointer data)
{
    if (is_form_valid())
        gtk_widget_set_sensitive(GTK_WIDGET(submit_button), true);
    else 
        gtk_widget_set_sensitive(GTK_WIDGET(submit_button), false);
}

static void activate(GtkApplication *app, gpointer user_data)
{
    window = gtk_application_window_new(app);
    gtk_window_set_title(GTK_WINDOW(window), "ap_client");
    gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
    gtk_container_set_border_width(GTK_CONTAINER(window), 10);

    box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 6);
    gtk_widget_set_valign(GTK_WIDGET(box), GTK_ALIGN_CENTER);
    gtk_widget_set_halign(GTK_WIDGET(box), GTK_ALIGN_CENTER);

    instance_name_box = gtk_entry_new();
    gtk_entry_set_placeholder_text(
            GTK_ENTRY(instance_name_box), "Instance domain");
    g_signal_connect(GTK_ENTRY(instance_name_box), "activate",
            G_CALLBACK(form_on_activate), NULL);
    g_signal_connect(G_OBJECT(instance_name_box), "changed",
            G_CALLBACK(on_form_changed), NULL);

    email_box = gtk_entry_new();
    gtk_entry_set_placeholder_text(GTK_ENTRY(email_box), "Email");
    gtk_entry_set_input_purpose(GTK_ENTRY(email_box), GTK_INPUT_PURPOSE_EMAIL);
    g_signal_connect(GTK_ENTRY(email_box), "activate",
            G_CALLBACK(form_on_activate), NULL);
    g_signal_connect(G_OBJECT(email_box), "changed",
            G_CALLBACK(on_form_changed), NULL);

    password_box = gtk_entry_new();
    gtk_entry_set_placeholder_text(GTK_ENTRY(password_box), "Password");
    gtk_entry_set_input_purpose(
            GTK_ENTRY(password_box), GTK_INPUT_PURPOSE_PASSWORD);
    gtk_entry_set_visibility(GTK_ENTRY(password_box), false);
    g_signal_connect(GTK_ENTRY(password_box), "activate",
            G_CALLBACK(form_on_activate), NULL);
    g_signal_connect(G_OBJECT(password_box), "changed",
            G_CALLBACK(on_form_changed), NULL);

    submit_button = gtk_button_new();
    g_signal_connect(GTK_BUTTON(submit_button), "clicked",
            G_CALLBACK(submit_button_clicked), G_OBJECT(window));
    gtk_button_set_label(GTK_BUTTON(submit_button), "Submit");
    gtk_widget_set_sensitive(GTK_WIDGET(submit_button), false);

    spinner = gtk_spinner_new();

    gtk_container_add(GTK_CONTAINER(window), box);
    gtk_container_add(GTK_CONTAINER(box), instance_name_box);
    gtk_container_add(GTK_CONTAINER(box), email_box);
    gtk_container_add(GTK_CONTAINER(box), password_box);
    gtk_container_add(GTK_CONTAINER(box), submit_button);
    gtk_container_add(GTK_CONTAINER(box), spinner);

    gtk_widget_show_all(window);
}

int main(int argc, char **argv)
{
    /* gtk_init(&argc, &argv); */
    /* create_main_window(); */
    /* gtk_main(); */
    if (http_init()) {
        fprintf(stderr, "main(): failed to load http library\n");
        return EXIT_FAILURE;
    }

    GtkApplication *app;
    int status;

    app = gtk_application_new("org.gtk.ap_client", G_APPLICATION_FLAGS_NONE);
    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
    status = g_application_run(G_APPLICATION(app), argc, argv);
    g_object_unref(app);

    http_cleanup();
    auth_cleanup();

    return status;

    /* char *text; */
    /* struct timeline *t; */
    /* char *url = "https://mstdn.io/api/v1/timelines/home"; */
    /* char *token = */
    /*         "580acfb412e927c2030fb5519f417b03ced1482c862d44376922cd81ee8a3655";
     */

    /* text = request(url, token); */
    /* if (!text) { */
    /*     fprintf(stderr, "main(): failed to get http response\n"); */
    /*     return EXIT_FAILURE; */
    /* } */

    /* t = timeline_from_json(text); */
    /* if (t == NULL) { */
    /*     fprintf(stderr, "main(): failed to parse timeline\n"); */
    /*     return EXIT_FAILURE; */
    /* } */

    /* for (size_t i = 0; i < t->size; i++) { */
    /*     printf("status id: %s\n", t->statuses[i]->id); */
    /*     printf("content: %s\n", t->statuses[i]->content); */
    /*     printf("reblog count: %d\n", t->statuses[i]->reblogs_count); */
    /*     printf("fav count: %d\n", t->statuses[i]->favourites_count); */
    /*     printf("\n"); */
    /* } */

    /* free(text); */
    /* timeline_free(t); */
}