1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeFamilies #-}
module Blog where
import BlogStore
import Data.Text (Text, empty, pack)
import qualified Data.Text as T
import Data.Text.Lazy (fromStrict)
import Data.Time
import Locales
import Text.Blaze.Html (preEscapedToHtml)
import Text.Hamlet
import Text.Markdown
replace :: Eq a => a -> a -> [a] -> [a]
replace x y = map (\z -> if z == x then y else z)
-- |After this date all entries are Markdown
markdownCutoff :: Day
markdownCutoff = fromGregorian 2013 04 28
blogTemplate :: BlogLang -> Text -> Html -> Html
blogTemplate lang t_append body =
[shamlet|
$doctype 5
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content=#{blogTitle lang t_append}>
<link rel="stylesheet" type="text/css" href="/static/blog.css" media="all">
<link rel="alternate" type="application/rss+xml" title="RSS-Feed" href=#{rssUrl}>
<title>#{blogTitle lang t_append}
<body>
<header>
<h1>
<a href="/" .unstyled-link>#{blogTitle lang empty}
<hr>
^{body}
^{showFooter}
|]
where
rssUrl = T.concat ["/", show' lang, "/rss.xml"]
showFooter :: Html
showFooter =
[shamlet|
<footer>
<p .footer>Served without any dynamic languages.
<p .footer>
<a href=#{repoURL} .uncoloured-link>Version #{version}
|
<a href=#{twitter} .uncoloured-link>Twitter
|
<a href=#{mailTo} .uncoloured-link>Mail
<p .lod>
ಠ_ಠ
|]
isEntryMarkdown :: Entry -> Bool
isEntryMarkdown e = edate e > markdownCutoff
renderEntryMarkdown :: Text -> Html
renderEntryMarkdown = markdown def {msXssProtect = False} . fromStrict
renderEntries :: [Entry] -> Maybe Html -> Html
renderEntries entries pageLinks =
[shamlet|
$forall entry <- entries
<article>
<h2 .inline>
<a href=#{linkElems entry} .unstyled-link>
#{title entry}
<aside .date>
#{pack $ formatTime defaultTimeLocale "%Y-%m-%d" $ edate entry}
$if (isEntryMarkdown entry)
^{renderEntryMarkdown $ text entry}
$else
^{preEscapedToHtml $ text entry}
<hr>
$maybe links <- pageLinks
^{links}
|]
where
linkElems Entry {..} = concat $ ["/", show lang, "/", show entryId]
showLinks :: Maybe Int -> BlogLang -> Html
showLinks (Just i) lang =
[shamlet|
$if ((>) i 1)
<div .navigation>
<a href=#{nLink $ succ i} .uncoloured-link>#{backText lang}
|
<a href=#{nLink $ pred i} .uncoloured-link>#{nextText lang}
$elseif ((<=) i 1)
^{showLinks Nothing lang}
|]
where
nLink page = T.concat ["/", show' lang, "/?page=", show' page]
showLinks Nothing lang =
[shamlet|
<div .navigation>
<a href=#{nLink} .uncoloured-link>#{backText lang}
|]
where
nLink = T.concat ["/", show' lang, "/?page=2"]
renderEntry :: Entry -> Html
renderEntry e@Entry {..} =
[shamlet|
<article>
<h2 .inline>
#{title}
<aside .date>
#{pack $ formatTime defaultTimeLocale "%Y-%m-%d" edate}
$if (isEntryMarkdown e)
^{renderEntryMarkdown text}
$else
^{preEscapedToHtml $ text}
<hr>
|]
showError :: BlogError -> BlogLang -> Html
showError NotFound l =
blogTemplate l (T.append ": " $ notFoundTitle l)
$ [shamlet|
<p>:(
<p>#{notFoundText l}
<hr>
|]
showError UnknownError l =
blogTemplate l ""
$ [shamlet|
<p>:(
<p>#{unknownErrorText l}
<hr>
|]
|
