{-# LANGUAGE DuplicateRecordFields    #-}
{-# LANGUAGE DisambiguateRecordFields #-}
{-# LANGUAGE TypeSynonymInstances #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE RecordWildCards #-}

module Templates where


import Data.Time (UTCTime)
import Data.Time.Format (formatTime, defaultTimeLocale)
import Data.Time.LocalTime (zonedTimeToUTC)
import qualified Data.Map.Strict as Map

import Achille.Internal.IO (AchilleIO)
import Achille.Writable as Writable
import Lucid
import Lucid.Base (makeAttribute)

import Types
import Common
import Config


instance AchilleIO m => Writable m (Html a) where
    write to = Writable.write to . renderBS

showDate :: UTCTime -> String
showDate = formatTime defaultTimeLocale "%b %d, %_Y"

loading_ :: Text -> Attribute
loading_ = makeAttribute "loading"

property_ :: Text -> Attribute
property_ = makeAttribute "property"

toLink :: FilePath -> Html () -> Html ()
toLink url = a_ [ href_ (fromString $ "/" <> url) ]

renderProject :: Project -> [(String, FilePath)] -> Text -> Html ()
renderProject (project@Project{title,..}) children content =
    outerWith def { Config.title       = fromString title
                  , Config.description = fromString subtitle
                  } do
        header_ [ class_ "project" ] do
            div_ (img_ [ src_ "logo.svg" ])
            div_ do
                h1_ (fromString title)
                p_ (fromString subtitle)
                ul_ $ forM_ (Map.toList labels) \(k, v) -> li_ do
                    fromString k <> ": "
                    if k == "repo" then
                        a_ [ href_ (fromString $ "https://github.com/" <> v) ]
                            $ fromString v
                    else fromString v
        when (length children > 0) $
            ol_ [ class_ "pages" ] $ forM_ children \(t,l) ->
                li_ $ a_ [ href_ (fromString l) ] (fromString t)
        toHtmlRaw content

renderReadings :: [Book] -> Html ()
renderReadings books =
    outerWith def { Config.title       = "readings"
                  , Config.description = "books I've read"
                  } do
        table_ [ class_ "books" ] $
            forM_ books \ Book {title,author,rating,completed} ->
                tr_ do
                    td_ (toHtml title)
                    td_ (toHtml author)
                    td_ $ fromString $ case rating of
                        Just r  -> replicate r '★'
                        Nothing -> "·"
                    td_ $ fromString $ case completed of
                        Just d  -> formatTime defaultTimeLocale "%m/%0Y"
                                   $ zonedTimeToUTC d
                        Nothing -> "·"

renderProjects :: Text -> [(Project, FilePath)] -> Html ()
renderProjects txt paths =
    outer do
        toHtmlRaw txt
        ul_ [ class_ "projects" ] do
            forM_ paths \(Project {title,..}, link) -> li_ $ a_ [ href_ (fromString link) ] $ do
                div_ $ img_ [ src_ (fromString $ link </> "logo.svg") ]
                div_ do
                    h2_ (fromString title)
                    p_  (fromString subtitle)
                    -- H.ul $ forM_ (Map.toList $ Types.labels project) \(k, v) ->
                    --     H.li $ (fromString k <> ": " <> fromString v)

logo :: Html ()
logo = toHtmlRaw ("<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" height=\"19px\" width=\"29px\"><path d=\"M 2,2 A 5,5 0 0 1 7,7 L 7, 12 A 5, 5 0 0 1 2,17 M 7,7 A 5,5 0 0 1 12,2 L 22,2 A 5,5 0 0 1 27,7 L 27,12 A 5, 5 0 0 1 22,17 L 12,17\" style=\"stroke-width: 2; stroke-linecap: butt; stroke-linejoin: bevel; stroke: #fff\" fill=\"none\"/></svg>" :: Text)

outer :: Html () -> Html ()
outer = outerWith def

outerWith :: SiteConfig -> Html () -> Html ()
outerWith SiteConfig{title,..} content = doctypehtml_ do
    head_ do
        meta_ [ name_ "viewport"
              , content_ "width=device-width, initial-scale=1.0, user-scalable=yes"
              ]
        meta_ [ name_ "theme-color",  content_ "#000000" ]
        meta_ [ name_ "robots", content_ "index, follow" ]
        meta_ [ charset_ "utf-8" ]
        link_ [ rel_ "stylesheet",  href_ "/assets/theme.css" ]
        link_ [ rel_  "shortcut icon"
              , type_ "image/svg"
              , href_ "/assets/favicon.svg"
              ]
        link_ [ rel_ "alternate"
              , type_ "application/atom+xml"
              , href_ "/atom.xml"
              ]
        meta_ [ property_ "og:title", content_ title ]
        meta_ [ property_ "og:type", content_ "website" ]
        meta_ [ property_ "og:image", content_ image ]
        meta_ [ property_ "og:description", content_ description ]
        title_ $ toHtml title

    body_ do
        header_ [ id_ "hd" ] $ section_ do
            a_ [ href_ "/" ] $ logo
            section_ $ nav_ do
                a_ [ href_ "/projects.html" ] "Projects"
                a_ [ href_ "/visual.html"   ] "Visual"
                a_ [ href_ "/readings.html" ] "Readings"
                a_ [ href_ "/quid.html"     ] "Quid"
                a_ [ href_ "/atom.xml"      ] "Feed"

        main_ content

        footer_ [ id_ "ft" ] do
            "flupe 2020 · "
            a_ [ href_ "https://creativecommons.org/licenses/by-nc/2.0/" ]
                "CC BY-NC 2.0"
            " · "
            a_ [ href_ "https://instagram.com/ba.bou.m/" ] "instagram"
            " · "
            a_ [ href_ "/atom.xml" ] "feed"