#!/usr/bin/env python2.7

import sys

events = [
    ('xproto', 'KeyPressEvent'),
    ('xproto', 'KeyReleaseEvent'),
    ('xproto', 'ButtonPressEvent'),
    ('xproto', 'ButtonReleaseEvent'),
    ('xproto', 'MotionNotifyEvent'),
    ('xproto', 'EnterNotifyEvent'),
    ('xproto', 'LeaveNotifyEvent'),
    ('xproto', 'FocusInEvent'),
    ('xproto', 'FocusOutEvent'),
    ('xproto', 'KeymapNotifyEvent'),
    ('xproto', 'ExposeEvent'),
    ('xproto', 'GraphicsExposureEvent'),
    ('xproto', 'NoExposureEvent'),
    ('xproto', 'VisibilityNotifyEvent'),
    ('xproto', 'CreateNotifyEvent'),
    ('xproto', 'DestroyNotifyEvent'),
    ('xproto', 'UnmapNotifyEvent'),
    ('xproto', 'MapNotifyEvent'),
    ('xproto', 'MapRequestEvent'),
    ('xproto', 'ReparentNotifyEvent'),
    ('xproto', 'ConfigureNotifyEvent'),
    ('xproto', 'ConfigureRequestEvent'),
    ('xproto', 'GravityNotifyEvent'),
    ('xproto', 'ResizeRequestEvent'),
    ('xproto', 'CirculateNotifyEvent'),
    ('xproto', 'CirculateRequestEvent'),
    ('xproto', 'PropertyNotifyEvent'),
    ('xproto', 'SelectionClearEvent'),
    ('xproto', 'SelectionRequestEvent'),
    ('xproto', 'SelectionNotifyEvent'),
    ('xproto', 'ColormapNotifyEvent'),
    ('xproto', 'ClientMessageEvent'),
    ('xproto', 'MappingNotifyEvent'),

    # X Shape extension events
    ('shape', 'NotifyEvent'),
]

assert len(sys.argv) == 2

if sys.argv[1] == 'evtypes':
    print 'package xevent'
    print '''/*
    Defines event types and their associated methods automatically.
    
    This file is automatically generated using `scripts/write-events evtypes`.

    Edit it at your peril.
*/'''
    print
    print 'import ('
    print '\t"fmt"'
    print
    print '\t"github.com/jezek/xgb/shape"'
    print '\t"github.com/jezek/xgb/xproto"'
    print ')'
    print

    for ext, e in events:
        # Skip ClientMessageEvent and ConfigureNotifyEvent
        # We define these manually in xevents/types_manual.go
        if e in ('ClientMessageEvent', 'ConfigureNotifyEvent'):
            continue

        if ext == 'xproto':
            print 'type %s struct {' % e
            print '    *%s.%s' % (ext, e)
            print '}'
            print
            print 'const %s = %s.%s' % (e[:-5], ext, e[:-5])
            print
            print 'func (ev %s) String() string {' % e
            print '    return fmt.Sprintf("%%v", ev.%s)' % e
            print '}'
            print
        else:
            print 'type %s%s struct {' % (ext.title(), e)
            print '    *%s.%s' % (ext, e)
            print '}'
            print
            print 'const %s%s = %s.%s' % (ext.title(), e[:-5], ext, e[:-5])
            print
            print 'func (ev %s%s) String() string {' % (ext.title(), e)
            print '    return fmt.Sprintf("%%v", ev.%s)' % e
            print '}'
            print
elif sys.argv[1] == 'callbacks':
    print 'package xevent'
    print '''/*
    Does all the plumbing to allow a simple callback interface for users.

    This file is automatically generated using `scripts/write-events callbacks`.

    Edit it at your peril.
*/'''
    print
    print 'import ('
    print '\t"github.com/jezek/xgb/xproto"'
    print
    print '\t"github.com/jezek/xgbutil"'
    print ')'
    print

    for ext, e in events:
        e = e[:-5]
        if ext != 'xproto':
            e = '%s%s' % (ext.title(), e)
        print 'type %sFun func(xu *xgbutil.XUtil, event %sEvent)' % (e, e)
        print
        print 'func (callback %sFun) '\
                'Connect(xu *xgbutil.XUtil,\nwin xproto.Window) {' % e
        print '    attachCallback(xu, %s, win, callback)' % e
        print '}'
        print
        print 'func (callback %sFun) ' \
                'Run(xu *xgbutil.XUtil, event interface{}) {' % e
        print '    callback(xu, event.(%sEvent))' % e
        print '}'
        print