-- (C) Copyright Collin J. Doering 2015
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program.  If not, see <http://www.gnu.org/licenses/>.

-- File: Header.hs
-- Author: Collin J. Doering <collin.doering@rekahsoft.ca>
-- Date: Jan  9, 2015

{-# LANGUAGE OverloadedStrings #-}

module Header
( logoHeader
, navigation
, theHeader
) where

import Clay hiding (i, s, id)
import Prelude hiding (div, span, (**))

theHeader :: Css
theHeader = do
  logoHeader
  navigation
  statusMessage

logoHeader :: Css
logoHeader = do
  "#logo-background" ? do
    backgroundColor "#cef" -- fallback background color
    backgroundImage $ vGradient "#cef" "#cff"
    sym2 padding (em 0.75) nil

  "#logo" ? do
    backgroundImage $ url "/images/logo-banner.svg"
    backgroundRepeat noRepeat
    backgroundPosition $ positioned (pct 50) (pct 50)
    backgroundSize contain
    height (px 175)

navigation :: Css
navigation = do
  keyframesFromTo "nav-slide"
    (backgroundPosition $ positioned nil nil)
    (backgroundPosition $ positioned (px 304) nil)

  "#nav" ? do
    border solid (px 2) black
    borderRightWidth 0
    borderLeftWidth 0
    backgroundImage $ url "/images/diagonal-stripes.png"
    animation "nav-slide" (sec 5) linear (sec 0) infinite normal none
    animationPlayState paused

  "#nav" # ".loading" ?
    animationPlayState running

  "#nav-menu" ? do
    textAlign $ alignSide sideCenter
    marginBottom nil

    li ? do
      display inlineBlock
      sym margin nil
      sym2 padding (px 10) (em 3)

      ".menuitem" ? do
        display block
        color "#eee"
        fontSize (em 1.5)
        fontWeight bold
        textDecoration none
        textShadow (px 1) (px 1) nil black
        transitionProperty "transform"
        transitionDuration (ms 20)

      ".menuitem" # ":hover" ? do
        color "#ddd"
        transform $ scale 1.1 1.1

      ".menuitem" # ":active" ? do
        transform $ scale 0.95 0.95

    li # ".active" ? do
      ".menuitem" ? do
        color "#fff"
        textShadow (px 2) (px 2) nil black
        transform $ scale 1.2 1.2

      -- ".menuitem" # ":hover" ? do
        -- transitionProperty "none" -- WHY? this doesn't seem to be needed.

      ".menuitem" # ":active" ? do
        -- transitionProperty "none" -- WHY? this doesn't seem to be needed.
        transform $ scale 1.1 1.1

    a # ".rss-icon" ? do
      display inlineBlock
      position absolute
      backgroundImage $ url "/images/rss-icon.png"
      backgroundSize contain
      sym borderRadius (px 5)
      minHeight (px 25)
      minWidth (px 25)
      sym margin nil
      top (px 7)
      right (px 10)

    a # ".rss-icon" # ":hover" ? do
      transform $ scale 1.1 1.1

    a # ".rss-icon" # ":active" ? do
      transform $ scale 0.9 0.9

statusMessage :: Css
statusMessage = do
  "#status" ? do
    display none
    border solid (px 1) black
    borderTop solid nil black
    borderBottomRightRadius (px 5) (px 5)
    borderBottomLeftRadius (px 5) (px 5)
    backgroundColor $ rgb 146 208 240
    -- boxShadow (px 2) (px 5) (px 5) "#888888"
    --boxShadow [shadowWithSpread (px 2) (px 5) (px 5), bsColor "#888888" $ shadow (px 1) (px 2)]
    sym padding (px 8)
    marginBottom (em 1.25)

  "#status" # ".error" ?
    backgroundColor "#FD6F6F"

  "#status" # ".success" ? do
    backgroundColor $ rgb 136 211 136