/*
 * Copyright 2014 (c) Anna Schumaker.
 */
#include <core/string.h>
#include <gui/artwork.h>
#include <gui/audio.h>
#include <gui/idle.h>
#include <gui/playlist.h>
#include <gui/treeview.h>
#include <gui/window.h>

static guint audio_timeout   = 0;
static guint popover_timeout = 0;

static inline void __gui_audio_set_label_markup(GtkLabel    *label,
						const gchar *size,
						const gchar *text)
{
	const gchar *fmt = "<span size='%s'>%s</span>";
	gchar    *markup = g_markup_printf_escaped(fmt, size, text);
	gtk_label_set_markup(label, markup);
	g_free(markup);
}

static void __gui_audio_load(struct track *track)
{
	gchar *duration = string_sec2str(track->tr_length);

	__gui_audio_set_label_markup(gui_title_tag(),  "xx-large",
				     track->tr_title);
	__gui_audio_set_label_markup(gui_album_tag(),  "x-large",
				     track->tr_album->al_name);
	__gui_audio_set_label_markup(gui_artist_tag(), "x-large",
				     track->tr_album->al_artist->ar_name);
	__gui_audio_set_label_markup(gui_duration(), "large", duration);
	__gui_audio_set_label_markup(gui_position(), "large", "0:00");
	gtk_adjustment_set_upper(gui_seek(), track->tr_length);

	gui_pl_system_track_loaded(track);
	gui_treeview_scroll();
	gui_artwork_set_cover();
	gui_idle_enable();
	g_free(duration);
}

static void __gui_audio_set_pause_text(int n, GstState state)
{
	bool sensitive = true;
	gchar *text;

	if (n == -1) {
		sensitive = false;
		if (state == GST_STATE_PLAYING)
			text = g_strdup("Keep playing");
		else
			text = g_strdup("Paused");
	} else if (n == 0)
		text = g_strdup("Pause after this track");
	else if (n == 1)
		text = g_strdup("Pause after next track");
	else
		text = g_strdup_printf("Pause after %d tracks", n);

	gtk_widget_set_sensitive(GTK_WIDGET(gui_pause_down()), sensitive);
	gtk_entry_set_text(gui_pause_entry(), text);
	g_free(text);
}

static void __gui_audio_change_state(GstState state)
{
	bool playing = (state == GST_STATE_PLAYING);
	gtk_widget_set_visible(GTK_WIDGET(gui_play_button()),  !playing);
	gtk_widget_set_visible(GTK_WIDGET(gui_pause_button()),  playing);
	__gui_audio_set_pause_text(audio_get_pause_count(), state);
}

static void __gui_audio_config_pause(int n)
{
	__gui_audio_set_pause_text(n, audio_cur_state());
}


struct audio_callbacks audio_cb = {
	.audio_cb_load         = __gui_audio_load,
	.audio_cb_state_change = __gui_audio_change_state,
	.audio_cb_config_pause = __gui_audio_config_pause,
};


void __gui_audio_pause(GtkButton *button, gpointer data)
{
	audio_pause();
	if (audio_get_pause_count() > -1) {
		gtk_popover_popup(gui_pause_popover());
		popover_timeout = g_timeout_add_seconds(10,
					gui_audio_popover_timeout, NULL);
	}
}

void __gui_audio_pause_change_text(GtkEntry *entry, gpointer data)
{
	const gchar *text = gtk_entry_get_text(entry);
	int n = audio_get_pause_count();
	unsigned int i;

	if (g_str_match_string("Keep", text, true))
		n = -1;
	else if (g_str_match_string("This", text, true))
		n = 0;
	else if (g_str_match_string("Next", text, true))
		n = 1;
	else {
		for (i = 0; text[i] != '\0'; i++) {
			if (!g_ascii_isdigit(text[i]))
				continue;
			if (i > 0 && text[i-1] == '-')
				i -= 1;
			n = g_strtod(text + i, NULL);
			break;
		}
	}

	if (!audio_pause_after(n))
		__gui_audio_set_pause_text(audio_get_pause_count(), audio_cur_state());
}

void __gui_audio_pause_inc(GtkButton *button, gpointer data)
{
	audio_pause_after(audio_get_pause_count() + 1);
}

void __gui_audio_pause_dec(GtkButton *button, gpointer data)
{
	audio_pause_after(audio_get_pause_count() - 1);
}

void __gui_audio_pause_popover_popdown(GtkButton *button, gpointer data)
{
	gtk_popover_popdown(gui_pause_popover());
#ifdef CONFIG_TESTING
	gtk_widget_hide(GTK_WIDGET(gui_pause_popover()));
#endif /* CONFIG_TESTING */

	g_source_remove(popover_timeout);
	popover_timeout = 0;
}

void __gui_audio_pause_popover_clear(GtkButton *button, gpointer data)
{
	audio_pause_after(-1);
	__gui_audio_pause_popover_popdown(button, data);
}

void __gui_audio_seek(GtkRange *range, GtkScrollType type,
		      double value, gpointer data)
{
	audio_seek(value * GST_SECOND);
}

void __gui_audio_volume_changed(GtkScaleButton *button, gdouble value,
				gpointer data)
{
	audio_set_volume((unsigned int)value);
}

gboolean __gui_audio_can_accel(GtkWidget *widget, guint signal_id)
{
	g_signal_stop_emission_by_name(widget, "can-activate-accel");
	return !GTK_IS_ENTRY(gtk_window_get_focus(gui_window())) &&
	       gtk_widget_is_visible(widget) &&
	       gtk_widget_is_sensitive(widget);
}

void gui_audio_init()
{
	gtk_scale_button_set_value(gui_volume_button(), audio_get_volume());
	gtk_button_set_relief(GTK_BUTTON(gui_volume_button()), GTK_RELIEF_NORMAL);

	audio_timeout = g_timeout_add(500, gui_audio_timeout, NULL);
}

void gui_audio_deinit()
{
	g_source_remove(audio_timeout);
	if (popover_timeout > 0)
		g_source_remove(popover_timeout);
}

int gui_audio_timeout(gpointer data)
{
	gchar *position = string_sec2str(audio_position() / GST_SECOND);

	gtk_adjustment_set_upper(gui_seek(), audio_duration() / GST_SECOND);
	gtk_adjustment_set_value(gui_seek(), audio_position() / GST_SECOND);
	__gui_audio_set_label_markup(gui_position(), "large", position);

	g_free(position);
	return G_SOURCE_CONTINUE;
}

int gui_audio_popover_timeout(gpointer data)
{
	__gui_audio_pause_popover_popdown(NULL, data);
	return G_SOURCE_REMOVE;
}