slate.config('defaultToCurrentScreen', true)

slate.bind('up:cmd;ctrl;alt', screenify(topCenter))
slate.bind('down:cmd;ctrl;alt', screenify(bottomCenter))
slate.bind('left:ctrl;alt;shift', screenify(topLeft))
slate.bind('up:ctrl;alt;shift', screenify(topRight))
slate.bind('right:ctrl;alt;shift', screenify(bottomRight))
slate.bind('down:ctrl;alt;shift', screenify(bottomLeft))

slate.bind('left:cmd;ctrl;alt', screenify(left))
slate.bind('right:cmd;ctrl;alt', screenify(right))
slate.bind('m:cmd;ctrl;alt', screenify(mid))

slate.bind('f:cmd;ctrl;alt', screenify(full))
slate.bind('c:cmd;ctrl;alt', screenify(center))
slate.bind('h:cmd;ctrl;alt', screenify(tall))

function topCenter (base, screen) {
  return slate.operation('move', {
    screen: screen,
    x: frac('x', 1/base),
    y: origin('y'),
    width: frac('x', 1/base),
    height: frac('y', 2/3)
  })
}

function bottomCenter (base, screen) {
  return slate.operation('move', {
    screen: screen,
    x: frac('x', 1/base),
    y: frac('y', 2/3, origin('y')),
    width: frac('x', 1/base),
    height: frac('y', 1/3)
  })
}

function topLeft (base, screen) {
  return slate.operation('corner', {
    screen: screen,
    direction: 'top-left',
    width: frac('x', 1/base),
    height: frac('y', 2/3)
  })
}

function topRight (base, screen) {
  return slate.operation('corner', {
    screen: screen,
    direction: 'top-right',
    width: frac('x', 1/base),
    height: frac('y', 2/3)
  })
}

function bottomLeft (base, screen) {
  return slate.operation('corner', {
    screen: screen,
    direction: 'bottom-left',
    width: frac('x', 1/base),
    height: frac('y', 1/3)
  })
}

function bottomRight (base, screen) {
  return slate.operation('corner', {
    screen: screen,
    direction: 'bottom-right',
    width: frac('x', 1/base),
    height: frac('y', 1/3)
  })
}

function left (base, screen) {
  return slate.operation('corner', {
    screen: screen,
    direction: 'top-left',
    width: frac('x', 1/base),
    height: 'screenSizeY'
  })
}

function right (base, screen) {
  return slate.operation('corner', {
    screen: screen,
    direction: 'top-right',
    width: frac('x', 1/base),
    height: 'screenSizeY'
  })
}

function mid (base, screen) {
  var width = frac('x', 1/base)
  return slate.operation('move', {
    screen: screen,
    x: ['(screenSizeX/2)-(0.5*', width, ')'].join(''),
    y: origin('y'),
    width: width,
    height: 'screenSizeY'
  })
}

function center (base, screen) {
  var width = frac('x', 1/base)
  return slate.operation('move', {
    screen: screen,
    x: ['(screenSizeX/2)-(0.5*', width, ')'].join(''),
    y: frac('y', 1/6, origin('y')),
    width: frac('x', 1/base),
    height: frac('y', 2/3)
  })
}

function full (base, screen) {
  return slate.operation('corner', {
    screen: screen,
    direction: 'top-left',
    width: 'screenSizeX',
    height: 'screenSizeY'
  })
}

function tall (base, screen) {
  return slate.operation('move', {
    screen: screen,
    x: 'windowTopLeftX',
    y: origin('y'),
    width: 'windowSizeX',
    height: frac('y', 1)
  })
}

function frac (axis, mult, offset) {
  return [
    mult || 1,
    '*',
    'screenSize',
    axis.toUpperCase(),
    '+',
    offset || 0
  ].join('')
}

function origin (axis) {
  return 'screenOrigin' + axis.toUpperCase()
}

function screenify (fn) {
  return function (win) {
    var screen = slate.screen()
    var base = 2
    if (screen.rect().width > 2560) base = 3
    win.doOperation(fn(base, screen))
  }
}

// config defaultToCurrentScreen true
// config nudgePercentOf screenSize
// config resizePercentOf screenSize

// alias topLeft corner top-left resize:screenSizeX/3;2*screenSizeY/3
// alias topRight corner top-right resize:screenSizeX/3;2*screenSizeY/3
// alias topCenter move screenSizeX/3;screenOriginY screenSizeX/3;2*screenSizeY/3
// alias bottomLeft corner bottom-left resize:screenSizeX/3;screenSizeY/3
// alias bottomRight corner bottom-right resize:screenSizeX/3;screenSizeY/3
// alias bottomCenter move screenSizeX/3;screenOriginY+2*screenSizeY/3 screenSizeX/3;screenSizeY/3
//
// bind left:ctrl;alt;shift ${topLeft}
// bind up:ctrl;alt;shift ${topRight}
// bind right:ctrl;alt;shift ${bottomRight}
// bind down:ctrl;alt;shift ${bottomLeft}
//
// bind up:cmd;ctrl;alt ${topCenter}
// bind down:cmd;ctrl;alt ${bottomCenter}
//
// bind left:ctrl;alt throw 0
// bind right:ctrl;alt throw 1
//
//
// bind esc:cmd hint