module clipboard

#include <libkern/OSAtomic.h>
#include <Cocoa/Cocoa.h>
#flag -framework Cocoa

#include "@VROOT/vlib/clipboard/clipboard_darwin.m"

pub struct Clipboard {
	pb             voidptr
	last_cb_serial i64
mut:
	foo            int // TODO remove, for mut hack
}

fn C.darwin_new_pasteboard() voidptr
fn C.darwin_get_pasteboard_text() byteptr

fn new_clipboard() &Clipboard {
	cb := &Clipboard{
		pb: C.darwin_new_pasteboard()// pb
	}
	return cb
}

fn (cb &Clipboard) check_availability() bool {
	return cb.pb != C.NULL
}

fn (mut cb Clipboard) clear() {
	cb.foo = 0
	#[cb->pb clearContents];
}

fn (mut cb Clipboard) free() {
	cb.foo = 0
	// nothing to free
}

fn (cb &Clipboard) has_ownership() bool {
	if cb.last_cb_serial == 0 {
		return false
	}
	#return [cb->pb changeCount] == cb->last_cb_serial;
	return false
}

fn C.OSAtomicCompareAndSwapLong()

fn (mut cb Clipboard) set_text(text string) bool {
	cb.foo = 0
	#NSString *ns_clip;
	ret := false
	#ns_clip = [[ NSString alloc ] initWithBytesNoCopy:text.str length:text.len encoding:NSUTF8StringEncoding freeWhenDone: false];
	#[cb->pb declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
	#ret = [cb->pb setString:ns_clip forType:NSStringPboardType];
	#[ns_clip release];
	mut serial := 0
	#serial = [cb->pb changeCount];
	C.OSAtomicCompareAndSwapLong(cb.last_cb_serial, serial, &cb.last_cb_serial)
	return ret
}

fn (mut cb Clipboard) get_text() string {
	cb.foo = 0
	if isnil(cb.pb) {
		return ''
	}

	utf8_clip := C.darwin_get_pasteboard_text(cb.pb)
	return unsafe {utf8_clip.vstring()}
}

pub fn new_primary() &Clipboard {
	panic('Primary clipboard is not supported on non-Linux systems.')
}