let main_panel_buffer = null;

function show(file)
{
    if (main_panel_buffer == null) main_panel_buffer = document.getElementById("main_panel").innerHTML;

    $.ajax
    ({
        url: "./res/forum/" + file + "/" + file + ".html",
        dataType: "html",
        success: function(data)
        {
            $("#main_panel").html(main_panel_buffer + data);
        }
    });
}

function selection(type, value)
{
    return new Promise(function(resolve)
    {
        $.ajax
        ({
            url: "./res/forum/admin/" + type + "_selection.html",
            dataType: "html",
            success: function(result)
            {
                resolve(result.replace("value=\"" + value, "selected value=\"" + value));
            }
        })
    });
}

function inject_info(id, username, postfix)
{
    $.ajax
    ({
        url: "./res/forum/api/user_info.php?username=" + username,
        success: async function(result)
        {
            let admin_select = await selection("admin", result.admin);
            let sex_select = await selection("sex", result.sex);

            let output =
            `Uživatelské jméno: <input id="username" class="editable" type="text" value="${result.username}"><br>
             Přezdívka: <input id="nickname" class="editable" type="text" value="${result.nickname}"><br>
             Admin: ${admin_select}<br>
             Pohlaví: ${sex_select}<br>
             Bio: <input id="bio" class="editable" type="text" value="${result.bio}"><br>`;

            $(id).html(output + postfix);
        }
    });
}

function update_user(old_username, username, nickname, admin, sex, bio, refresh)
{
    $.ajax
    ({
        url: "./res/forum/api/update_user.php" +
        "?old_username=" + old_username +
        "&username=" + username +
        "&nickname=" + nickname +
        "&admin=" + admin +
        "&sex=" + sex +
        "&bio=" + bio,
        success: function(result)
        {
            show(refresh);
        }
    });
}