#define _POSIX_C_SOURCE 200809L
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <gtk-3.0/gtk/gtk.h>
#include <gs.h>
#include "main_window.h"
#include "log.h"

static GSClient *gs_client = NULL;
GtkApplication *application;
GObject *login_dialog;
GObject *instance_domain_entry, *email_entry, *password_entry;
GObject *login_button, *cancel_button;
GObject *spinner;

static gboolean login_completed(gpointer data)
{
    gtk_spinner_stop(GTK_SPINNER(spinner));
    gtk_widget_destroy(GTK_WIDGET(login_dialog));
    return G_SOURCE_REMOVE;
}

static gboolean login_failed(gpointer data)
{
    gtk_spinner_stop(GTK_SPINNER(spinner));
    return G_SOURCE_REMOVE;
}

static gpointer user_register(gpointer data)
{
    const char *instance_name, *email, *password;
    struct gs_app *app;

    instance_name = gtk_entry_get_text(GTK_ENTRY(instance_domain_entry));
    email = gtk_entry_get_text(GTK_ENTRY(email_entry));
    password = gtk_entry_get_text(GTK_ENTRY(password_entry));

    app = gs_app_register(instance_name);
    if (*val_ptr) {
        log_msg(LOG_WARNING, "user_register", "registration failed");
    }

    gs_client = gs_client_new(instance_name, app->client_id, app->client_secret);

    if (gs_auth_authenticate(gs_client, email, password)) {
        log_msg(LOG_WARNING, "user_register", "login failed");
        gdk_threads_add_idle(login_failed, NULL);
        return;
    }

    gdk_threads_add_idle(login_completed, NULL);
    return NULL;
}

static void submit_login_form()
{
    gtk_spinner_start(GTK_SPINNER(spinner));
    g_thread_new("register", user_register, NULL);
    return;
}

static bool is_form_valid()
{
    if (strlen(gtk_entry_get_text(GTK_ENTRY(instance_domain_entry))) < 1 ||
            strlen(gtk_entry_get_text(GTK_ENTRY(email_entry))) < 1 ||
            strlen(gtk_entry_get_text(GTK_ENTRY(password_entry))) < 1)
        return false;
    return true;
}

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

int create_login_dialog(gpointer data)
{
    GtkBuilder *login_builder;

    login_builder = gtk_builder_new_from_file("data/login_window.ui");
    login_dialog = gtk_builder_get_object(login_builder, "login_dialog");

    instance_domain_entry = gtk_builder_get_object(login_builder, 
            "instance_name");
    g_signal_connect(G_OBJECT(instance_domain_entry), "changed",
            G_CALLBACK(login_form_changed), NULL);
    g_signal_connect(GTK_ENTRY(instance_domain_entry), "activate",
            G_CALLBACK(form_on_activate), NULL);

    email_entry = gtk_builder_get_object(login_builder, "email");
    g_signal_connect(G_OBJECT(email_entry), "changed",
            G_CALLBACK(login_form_changed), NULL);
    g_signal_connect(GTK_ENTRY(email_entry), "activate",
            G_CALLBACK(form_on_activate), NULL);

    password_entry = gtk_builder_get_object(login_builder, "password");
    g_signal_connect(G_OBJECT(password_entry), "changed",
            G_CALLBACK(login_form_changed), NULL);
    g_signal_connect(GTK_ENTRY(password_entry), "activate",
            G_CALLBACK(form_on_activate), NULL);

    login_button = gtk_builder_get_object(login_builder, "login_button");
    g_signal_connect(GTK_BUTTON(login_button), "clicked",
            G_CALLBACK(login_button_click), NULL);
    cancel_button = gtk_builder_get_object(login_builder, "cancel_button");

    spinner = gtk_builder_get_object(login_builder, "spinner");

    return gtk_dialog_run(GTK_DIALOG(login_dialog));
}