#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 "timeline_window.h"
#include "log.h"

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

static void window_removed(
        GtkApplication *application, GtkWindow *w, gpointer user_data)
{
    /* gtk_widget_destroy(GTK_WIDGET(w)); */
}

static void login_callback(bool success)
{
    if (!success) {
        log_msg(LOG_WARNING, "login_callback", "login failed");
        gtk_spinner_stop(GTK_SPINNER(spinner));
        return;
    }

    gtk_spinner_stop(GTK_SPINNER(spinner));
    create_timeline_window(application, NULL);
    /* gtk_window_close(GTK_WINDOW(window)); */
    /* gtk_application_remove_window( */
            /* GTK_APPLICATION(application), GTK_WINDOW(window)); */
}

static void register_callback(bool success)
{
    if (!success) {
        gtk_spinner_stop(GTK_SPINNER(spinner));
        log_msg(LOG_WARNING, "register_callback", "register failed");
        return;
    }

    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;
    }
    return;
}

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 submit_button_clicked(GtkButton *button, gpointer user_data)
{
    if (is_form_valid())
        submit_login_form();
}

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

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);
}

void create_login_window(GtkApplication *app, gpointer user_data)
{
    application = app;
    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);
    g_signal_connect(app, "window-removed", G_CALLBACK(window_removed), NULL);

    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);
}