#include "window_tag.h"
#include "tags_ui.h"
#include "db.h"
#include "text_input_dialog.h"
#include "tag_model.h"

void on_tagview_cell_toggled(GtkCellRendererToggle *cell_renderer, gchar *path_string, gpointer user_data) {
	GtkTreeIter iter;
	GtkTreeModel *model;
	struct tagdialog_data_t *data;
	gboolean active, inconsistent;

	data = user_data;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(data->tagview));

	gtk_tree_model_get_iter_from_string(model, &iter, path_string);

	active = tag_model_get_checked(model, &iter);
	inconsistent = tag_model_get_inconsistent(model, &iter);

	if(inconsistent) {
		tag_model_set_inconsistent(GTK_TREE_MODEL(model), &iter, FALSE);
	} else {
		tag_model_set_checked(GTK_TREE_MODEL(model), &iter, !active);
	}
}

/**
 * foreach-callback for setting checked and inconsistent in the tag model.
 */
static gboolean tagview_model_foreach(GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer user_data) {
	struct tag_t *tag;
	struct tagdialog_data_t *data;
	struct tag_inconsistent_data_t *inconsistent_data;

	data = user_data;

	tag_model_get_tag_record(GTK_TREE_MODEL(model), iter, &tag);
	inconsistent_data = g_hash_table_lookup(data->inconsistent_table, tag->id);
	if(inconsistent_data) {
		tag_model_set_checked(GTK_TREE_MODEL(model), iter, inconsistent_data->active);
		tag_model_set_inconsistent(GTK_TREE_MODEL(model), iter, inconsistent_data->inconsistent);
	}

	return FALSE;
}

static void tagview_create_model(GtkTreeView *tagview, gpointer user_data) {
	GtkTreeModel *model;
	GArray *wallarray;
	struct tagdialog_data_t *data;

	data = user_data;
	wallarray = data->wallarray;

	db_wall_tags_inconsistent(wallarray, &(data->inconsistent_table));

	model = GTK_TREE_MODEL(tag_model_new());
	gtk_tree_view_set_model(tagview, GTK_TREE_MODEL(model));

	gtk_tree_model_foreach(GTK_TREE_MODEL(model), tagview_model_foreach, user_data);

	gtk_tree_view_expand_all(tagview);
}

static void tagview_init(GtkTreeView *tagview, gpointer user_data) {
	GtkTreeViewColumn *col1, *col2;
	GtkCellRenderer *renderer;

	col1 = gtk_tree_view_column_new();
	gtk_tree_view_column_set_title(col1, "Select");
	gtk_tree_view_append_column(tagview, col1);

	col2 = gtk_tree_view_column_new();
	gtk_tree_view_column_set_title(col2, "Name");
	gtk_tree_view_append_column(tagview, col2);

	renderer = gtk_cell_renderer_toggle_new();
	gtk_tree_view_column_pack_start(col1, renderer, FALSE);
	gtk_tree_view_column_add_attribute(col1, renderer, "active", 0);
	gtk_tree_view_column_add_attribute(col1, renderer, "inconsistent", 1);
	g_signal_connect(renderer, "toggled", G_CALLBACK(on_tagview_cell_toggled), user_data);

	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_column_pack_end(col2, renderer, TRUE);
	gtk_tree_view_column_add_attribute(col2, renderer, "text", 2);

	tagview_create_model(tagview, user_data);
}

void on_tags_addbtn_clicked(GtkButton *button, gpointer user_data) {
	struct tagdialog_data_t *data;
	GtkDialog *dialog;
	gchar *s;

	data = user_data;
	dialog = text_input_dialog_new(data->dialog, "Enter the name of the new tag:");
	if(gtk_dialog_run(dialog) == GTK_RESPONSE_OK) {
		s = text_input_dialog_get_text(GTK_WIDGET(dialog));
		if(db_add_tag(s, 0))
			tagview_create_model(GTK_TREE_VIEW(data->tagview), user_data);
		else
			g_warning("Failed to add tag \"%s\"\n", s);
		g_free(s);
	}
	gtk_widget_destroy(GTK_WIDGET(dialog));
}

void on_tags_addchildbtn_clicked(GtkButton *button, gpointer user_data) {
	struct tagdialog_data_t *data;
	GtkDialog *dialog;
	gchar *s;
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	struct tag_t *tag;

	data = user_data;
	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(data->tagview));
	if(!gtk_tree_selection_get_selected(selection, &model, &iter)) {
		return;
	}

	tag_model_get_tag_record(GTK_TREE_MODEL(model), &iter, &tag);

	dialog = text_input_dialog_new(data->dialog, "Enter the name of the new tag:");
	if(gtk_dialog_run(dialog) == GTK_RESPONSE_OK) {
		s = text_input_dialog_get_text(GTK_WIDGET(dialog));
		if(db_add_tag(s, tag->id))
			tagview_create_model(GTK_TREE_VIEW(data->tagview), user_data);
		else
			g_warning("Failed to add tag \"%s\"\n", s);
		g_free(s);
	}
	gtk_widget_destroy(GTK_WIDGET(dialog));
}

void on_tags_rembtn_clicked(GtkButton *button, gpointer user_data) {
	GtkWidget *dialog;
	struct tagdialog_data_t *data;
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	struct tag_t *tag;

	data = user_data;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(data->tagview));
	if(!gtk_tree_selection_get_selected(selection, &model, &iter))
		return;

	tag_model_get_tag_record(GTK_TREE_MODEL(model), &iter, &tag);

	dialog = gtk_message_dialog_new(GTK_WINDOW(data->dialog), GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
			GTK_MESSAGE_QUESTION, GTK_BUTTONS_YES_NO, "Are you sure you want to delete the tag \"%s\" and all its children?", tag->name);

	if(gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_YES) {
		db_remove_tag(tag->id);
		tagview_create_model(GTK_TREE_VIEW(data->tagview), user_data);
	}

	gtk_widget_destroy(dialog);
}

static void tags_select(gpointer user_data, gboolean select) {
	struct tagdialog_data_t *data;
	GtkTreeModel *model;
	GtkTreeIter iter;

	data = user_data;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(data->tagview));

	if(!gtk_tree_model_get_iter_first(model, &iter))
		return;

	do {
		tag_model_set_checked(GTK_TREE_MODEL(model), &iter, select);
	} while(gtk_tree_model_iter_next(model, &iter));
}

void on_tags_selallbtn_clicked(GtkButton *button, gpointer user_data) {
	tags_select(user_data, TRUE);
}

void on_tags_selnonebtn_clicked(GtkButton *button, gpointer user_data) {
	tags_select(user_data, FALSE);
}

void on_tagsdialog_destroy(GtkObject *object, gpointer user_data) {
	struct tagdialog_data_t *data;

	data = user_data;

	g_hash_table_destroy(data->inconsistent_table);
	g_free(user_data);
}

struct tagdialog_data_t *window_tagview_new(GtkWidget *parent, GArray* array) {
	GtkBuilder *builder;
	GtkDialog *dialog;
	GtkTreeView *tagview;
	GtkButton *selnonebtn;
	GtkImage *image;
	GError *error = NULL;
	struct tagdialog_data_t *data;

	builder = gtk_builder_new();
	if(!gtk_builder_add_from_string(builder, tags_ui_string, -1, &error)) {
		g_warning("%s", error->message);
		g_error_free(error);
		return NULL;
	}

	dialog = GTK_DIALOG(gtk_builder_get_object(builder, "tagsdialog"));
	gtk_window_set_transient_for(GTK_WINDOW(dialog), GTK_WINDOW(parent));
	gtk_window_set_default_size(GTK_WINDOW(dialog), 300, 300);

	tagview = GTK_TREE_VIEW(gtk_builder_get_object(builder, "tagview"));

	selnonebtn = GTK_BUTTON(gtk_builder_get_object(builder, "selnonebtn"));
	gtk_button_set_label(selnonebtn, "Select None");

	image = GTK_IMAGE(gtk_image_new_from_stock(GTK_STOCK_NEW, GTK_ICON_SIZE_BUTTON));
	gtk_button_set_image(selnonebtn, GTK_WIDGET(image));

	data = g_malloc(sizeof(struct tagdialog_data_t));
	data->dialog = GTK_WIDGET(dialog);
	data->tagview = GTK_WIDGET(tagview);
	data->wallarray = array;
	data->inconsistent_table = NULL;

	tagview_init(tagview, data);

	gtk_builder_connect_signals(builder, data);

	return data;
}