refactor: Move tazblog into monorepo structure

It's happening!
author: Vincent Ambo <tazjin@google.com> 2019-06-28T21·55+0100
committer: Vincent Ambo <tazjin@google.com> 2019-06-28T21·55+0100
commit: 2373c925e18963c6f2698ba4c45d74196f3aaaf3 (patch)
tree: 38a0c804881c71b24391129d9ca4092de1a7b583 /services/tazblog/src/Blog.hs
parent: aeeb11f1b76729115c4db98f419cbcda1a0f7660 (diff)
1 files changed, 234 insertions, 0 deletions
diff --git a/services/tazblog/src/Blog.hs b/services/tazblog/src/Blog.hs
new file mode 100644
index 000000000000..f35e3d90801f
--- /dev/null
+++ b/services/tazblog/src/Blog.hs
@@ -0,0 +1,234 @@
+module Blog where
+
+import BlogDB
+import Data.Maybe      (fromJust)
+import Data.Text       (Text, append, empty, pack)
+import Data.Text.Lazy  (fromStrict)
+import Data.Time
+import Locales
+import Text.Blaze.Html (preEscapedToHtml)
+import Text.Hamlet
+import Text.Markdown
+
+import qualified Data.Text as T
+
+replace :: Eq a => a -> a -> [a] -> [a]
+replace x y = map (\z -> if z == x then y else z)
+
+show' :: Show a => a -> Text
+show' = pack . show
+
+-- |After this time all entries are Markdown
+markdownCutoff :: UTCTime
+markdownCutoff = fromJust $ parseTimeM False defaultTimeLocale "%s" "1367149834"
+
+-- blog HTML
+blogTemplate :: BlogLang -> Text -> Html -> Html
+blogTemplate lang t_append body = [shamlet|
+$doctype 5
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="description" content=#{blogTitle lang t_append}>
+    <link rel="stylesheet" type="text/css" href="/static/blog.css" media="all">
+    <link rel="alternate" type="application/rss+xml" title="RSS-Feed" href=#{rssUrl}>
+    <title>#{blogTitle lang t_append}
+  <body>
+    <header>
+      <h1>
+        <a href="/" .unstyled-link>#{blogTitle lang empty}
+      <hr>
+    ^{body}
+    ^{showFooter}
+|]
+ where
+  rssUrl = T.concat ["/", show' lang, "/rss.xml"]
+
+showFooter :: Html
+showFooter = [shamlet|
+<footer>
+  <p .footer>Served without any dynamic languages.
+  <p .footer>
+    <a href=#{repoURL} .uncoloured-link>Version #{version}
+    |
+    <a href=#{twitter} .uncoloured-link>Twitter
+    |
+    <a href=#{mailTo} .uncoloured-link>Mail
+  <p .lod>
+    ಠ_ಠ
+|]
+
+isEntryMarkdown :: Entry -> Bool
+isEntryMarkdown e = edate e > markdownCutoff
+
+renderEntryMarkdown :: Text -> Html
+renderEntryMarkdown = markdown def {msXssProtect = False} . fromStrict
+
+renderEntries :: Bool -> [Entry] -> Maybe Html -> Html
+renderEntries showAll entries pageLinks = [shamlet|
+$forall entry <- toDisplay
+  <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 $ btext entry}
+    $else
+      ^{preEscapedToHtml $ btext entry}
+    $if ((/=) (mtext entry) empty)
+      <p>
+        <a .uncoloured-link href=#{linkElems entry}>
+          #{readMore $ lang entry}
+  <hr>
+$maybe links <- pageLinks
+  ^{links}
+|]
+  where
+   toDisplay = if showAll then entries else (take 6 entries)
+   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 btext}
+    <p>^{renderEntryMarkdown $ mtext}
+  $else
+    ^{preEscapedToHtml $ btext}
+    <p>^{preEscapedToHtml $ mtext}
+<hr>
+|]
+
+{- Administration pages -}
+
+adminTemplate :: Text -> Html -> Html
+adminTemplate title body = [shamlet|
+$doctype 5
+<head>
+ <link rel="stylesheet" type="text/css" href="/static/admin.css" media="all">
+ <meta http-equiv="content-type" content="text/html;charset=UTF-8">
+ <title>#{append "TazBlog Admin: " title}
+<body>
+ ^{body}
+|]
+
+adminLogin :: Html
+adminLogin = adminTemplate "Login" $ [shamlet|
+<div class="loginBox">
+ <div class="loginBoxTop">TazBlog Admin: Login
+ <div class="loginBoxMiddle">
+  <form action="/admin" method="POST">
+   <p>Account ID
+   <p><input type="text" style="font-size:2;" name="account" value="tazjin" readonly="1">
+   <p>Passwort
+   <p><input type="password" style="font-size:2;" name="password">
+   <p><input alt="Anmelden" type="image" src="/static/signin.gif">
+|]
+
+adminIndex :: Text -> Html
+adminIndex sUser = adminTemplate "Index" $ [shamlet|
+<div style="float:center;">
+ <form action="/admin/entry" method="POST">
+  <table>
+   <tr>
+    <thead><td>Title:
+    <td><input type="text" name="title">
+   <tr>
+    <thead><td>Language:
+    <td><select name="lang">
+     <option value="en">English
+     <option value="de">Deutsch
+   <tr>
+    <thead><td>Text:
+    <td>
+     <textarea name="btext" cols="100" rows="15">
+   <tr>
+    <thead>
+     <td style="vertical-align:top;">Read more:
+    <td>
+     <textarea name="mtext" cols="100" rows="15">
+  <input type="hidden" name="author" value=#{sUser}>
+  <input style="margin-left:20px;" type="submit" value="Submit">
+ ^{adminFooter}
+|]
+
+adminFooter :: Html
+adminFooter = [shamlet|
+<a href="/">Front page
+\ -- #
+  <a href="/admin">New article
+\ -- Entry list: #
+  <a href="/admin/entrylist/en">EN
+\ & #
+<a href="/admin/entrylist/de">DE
+|]
+
+adminEntryList :: [Entry] -> Html
+adminEntryList entries = adminTemplate "EntryList" $ [shamlet|
+<div style="float: center;">
+ <table>
+  $forall entry <- entries
+   <tr>
+    <td><a href=#{append "/admin/entry/" (show' $ entryId entry)}>#{title entry}
+    <td>#{formatPostDate $ edate entry}
+|]
+ where
+  formatPostDate = formatTime defaultTimeLocale "[On %D at %H:%M]"
+
+editPage :: Entry -> Html
+editPage (Entry{..}) = adminTemplate "Index" $ [shamlet|
+<div style="float:center;">
+ <form action=#{append "/admin/entry/" (show' entryId)} method="POST">
+  <table>
+   <tr>
+    <td>Title:
+    <td>
+     <input type="text" name="title" value=#{title}>
+   <tr>
+    <td style="vertical-align:top;">Text:
+    <td>
+     <textarea name="btext" cols="100" rows="15">#{btext}
+   <tr>
+    <td style="vertical-align:top;">Read more:
+    <td>
+     <textarea name="mtext" cols="100" rows="15">#{mtext}
+  <input type="submit" style="margin-left:20px;" value="Submit">
+  <p>^{adminFooter}
+|]
+
+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>
+|]
author	Vincent Ambo <tazjin@google.com>	2019-06-28T21·55+0100
committer	Vincent Ambo <tazjin@google.com>	2019-06-28T21·55+0100
commit	2373c925e18963c6f2698ba4c45d74196f3aaaf3 (patch)
tree	38a0c804881c71b24391129d9ca4092de1a7b583 /services/tazblog/src/Blog.hs
parent	aeeb11f1b76729115c4db98f419cbcda1a0f7660 (diff)