const Pages = {
  oninit: function(vnode) {
    this.onbeforeupdate(vnode)
  },

  onbeforeupdate: function(vnode) {
    this.total = vnode.attrs.total
    this.currentPage = vnode.attrs.page
    this.perPage = vnode.attrs.perPage || 10
    this.maxPage = this.total / this.perPage + 1
  },

  view: function(vnode) {
    if (this.total <= this.perPage) return null
    return m('pages', [
      this.currentPage > 1
        ? [
            m(m.route.Link, {
              href: vnode.attrs.base,
            }, 'First'),
            m(m.route.Link, {
              href: vnode.attrs.base + (this.currentPage > 2
                ? '?page=' + (this.currentPage - 1)
                : ''
              ),
            }, 'Previous'),
          ]
        : m('div'),
      m('div', 'Page ' + this.currentPage),
      this.currentPage < this.maxPage
        ? [
            m(m.route.Link, {
              href: vnode.attrs.base + '?page=' + (this.currentPage + 1),
            }, 'Next'),
            m(m.route.Link, {
              href: vnode.attrs.base + '?page=' + this.maxPage,
            }, 'Last')
          ]
        : m('div'),
    ])
  },
}

module.exports = Pages