const std = @import("std");

const c = @import("c.zig").c;
const Error = @import("errors.zig").Error;
const getError = @import("errors.zig").getError;

/// Sets the clipboard to the specified string.
///
/// This function sets the system clipboard to the specified, UTF-8 encoded string.
///
/// @param[in] string A UTF-8 encoded string.
///
/// Possible errors include glfw.Error.NotInitialized and glfw.Error.PlatformError.
///
/// @pointer_lifetime The specified string is copied before this function returns.
///
/// @thread_safety This function must only be called from the main thread.
///
/// see also: clipboard, glfwGetClipboardString
pub inline fn setClipboardString(value: [*c]const u8) Error!void {
    c.glfwSetClipboardString(null, value);
    try getError();
}

/// Returns the contents of the clipboard as a string.
///
/// This function returns the contents of the system clipboard, if it contains or is convertible to
/// a UTF-8 encoded string. If the clipboard is empty or if its contents cannot be converted,
/// glfw.Error.FormatUnavailable is returned.
///
/// @return The contents of the clipboard as a UTF-8 encoded string, or null if an error occurred.
///
/// Possible errors include glfw.Error.NotInitialized and glfw.Error.PlatformError.
///
/// @pointer_lifetime The returned string is allocated and freed by GLFW. You should not free it
/// yourself. It is valid until the next call to glfw.getClipboardString or glfw.setClipboardString
/// or until the library is terminated.
///
/// @thread_safety This function must only be called from the main thread.
///
/// see also: clipboard, glfwSetClipboardString
pub inline fn getClipboardString() Error![*c]const u8 {
    const value = c.glfwGetClipboardString(null);
    try getError();
    return value;
}

test "setClipboardString" {
    const glfw = @import("main.zig");
    try glfw.init();
    defer glfw.terminate();

    try glfw.setClipboardString("hello mach");
}

test "getClipboardString" {
    const glfw = @import("main.zig");
    try glfw.init();
    defer glfw.terminate();

    _ = try glfw.getClipboardString();
}