// SPDX-License-Identifier: GPL-2.0
#include "../util.h"
#include "gtk.h"

#include <stdlib.h>
#include <string.h>
#include <linux/zalloc.h>

struct perf_gtk_context *pgctx;

struct perf_gtk_context *perf_gtk__activate_context(GtkWidget *window)
{
        struct perf_gtk_context *ctx;

        ctx = malloc(sizeof(*pgctx));
        if (ctx)
                ctx->main_window = window;

        return ctx;
}

int perf_gtk__deactivate_context(struct perf_gtk_context **ctx)
{
        if (!perf_gtk__is_active_context(*ctx))
                return -1;

        zfree(ctx);
        return 0;
}

static int perf_gtk__error(const char *format, va_list args)
{
        char *msg;
        GtkWidget *dialog;

        if (!perf_gtk__is_active_context(pgctx) ||
            vasprintf(&msg, format, args) < 0) {
                fprintf(stderr, "Error:\n");
                vfprintf(stderr, format, args);
                fprintf(stderr, "\n");
                return -1;
        }

        dialog = gtk_message_dialog_new_with_markup(GTK_WINDOW(pgctx->main_window),
                                        GTK_DIALOG_DESTROY_WITH_PARENT,
                                        GTK_MESSAGE_ERROR,
                                        GTK_BUTTONS_CLOSE,
                                        "<b>Error</b>\n\n%s", msg);
        gtk_dialog_run(GTK_DIALOG(dialog));

        gtk_widget_destroy(dialog);
        free(msg);
        return 0;
}

#ifdef HAVE_GTK_INFO_BAR_SUPPORT
static int perf_gtk__warning_info_bar(const char *format, va_list args)
{
        char *msg;

        if (!perf_gtk__is_active_context(pgctx) ||
            vasprintf(&msg, format, args) < 0) {
                fprintf(stderr, "Warning:\n");
                vfprintf(stderr, format, args);
                fprintf(stderr, "\n");
                return -1;
        }

        gtk_label_set_text(GTK_LABEL(pgctx->message_label), msg);
        gtk_info_bar_set_message_type(GTK_INFO_BAR(pgctx->info_bar),
                                      GTK_MESSAGE_WARNING);
        gtk_widget_show(pgctx->info_bar);

        free(msg);
        return 0;
}
#else
static int perf_gtk__warning_statusbar(const char *format, va_list args)
{
        char *msg, *p;

        if (!perf_gtk__is_active_context(pgctx) ||
            vasprintf(&msg, format, args) < 0) {
                fprintf(stderr, "Warning:\n");
                vfprintf(stderr, format, args);
                fprintf(stderr, "\n");
                return -1;
        }

        gtk_statusbar_pop(GTK_STATUSBAR(pgctx->statbar),
                          pgctx->statbar_ctx_id);

        /* Only first line can be displayed */
        p = strchr(msg, '\n');
        if (p)
                *p = '\0';

        gtk_statusbar_push(GTK_STATUSBAR(pgctx->statbar),
                           pgctx->statbar_ctx_id, msg);

        free(msg);
        return 0;
}
#endif

struct perf_error_ops perf_gtk_eops = {
        .error          = perf_gtk__error,
#ifdef HAVE_GTK_INFO_BAR_SUPPORT
        .warning        = perf_gtk__warning_info_bar,
#else
        .warning        = perf_gtk__warning_statusbar,
#endif
};