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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
require "html"
require "../handler"
require "../views/html/page"
class Guff::Handlers::BlogHandler < Guff::Handler
ROUTES = [{
type: :post,
tags: ["_blog"],
re: %r{
^/
# match YYYY/MM/DD/SLUG.html
(?<year>\d{4})
/
(?<month>\d{2})
/
(?<day>\d{2})
/
(?<slug>[a-z0-9._-]+)
\.html
$
}x,
}, {
type: :list,
tags: ["_blog"],
re: %r{
^/
# match YYYY/MM/DD
(?<year>\d{4})
/
(?<month>\d{2})
/
(?<day>\d{2})
/?
$
}x,
}, {
type: :list,
tags: ["_blog"],
re: %r{
^/
# match YYYY/MM
(?<year>\d{4})
/
(?<month>\d{2})
/?
$
}x,
}, {
type: :list,
tags: ["_blog"],
re: %r{
^/
# match YYYY
(?<year>\d{4})
/?
$
}x,
}, {
type: :post,
tags: ["_post"],
re: %r{
^/
# match slug
(?<slug>[a-z0-9._-]+)
\.html
$
}x,
}, {
type: :list,
tags: ["_blog"],
re: %r{
^/
# match tags/foo/bar/baz
tags?\/(?<tags>(?:[a-z0-9._-]+)(?:/(?:[a-z0-9._-]+))*)
/?$
}x,
}, {
type: :tags,
tags: ["_blog"],
re: %r{
^/
# match tags
tags?
/?$
}x,
}, {
type: :list,
tags: ["_blog"],
re: %r{
# match index
^/$
}x,
}]
def call(context : HTTP::Server::Context)
path = context.request.path || ""
call_next(context) unless ROUTES.reduce(false) do |matched, route|
unless matched
if md = (route[:re] as Regex).match(path)
# log blog route match
puts "blog: route = %s, md = %s" % [
route.to_s,
md.to_s
]
# build tags
tags = route[:tags] as Array(String)
case route[:type]
when :tags
# route to list of tags
# mark as matched
matched = true
# draw result
draw_tags(context, @models.tag.get_tags(
tags: tags,
))
else
# route to post or list of posts
# add tags from path
if md["tags"]?
tags += md["tags"].split('/')
end
# search for matching posts
posts = @models.post.get_posts(
filters: get_post_filters(md),
tags: [tags],
)
if posts.size > 0
# mark as matched
matched = true
# draw result
draw_posts(context, route, posts)
end
end
end
end
matched
end
end
#######################
# post filter methods #
#######################
FILTERS = {
posted_year: "year",
posted_month: "month",
posted_day: "day",
slug: "slug",
}
private def get_post_filters(md) : Hash(Symbol, String)
FILTERS.reduce({
state: "posted"
}) do |r, k, s|
r[k] = md[s] if md[s]?
r
end
end
######################
# draw posts methods #
######################
private def draw_posts(context, route, posts)
case route[:type]
when :list
name = "Posts"
rows = posts.rows
pager = true
when :post
post = posts.rows.first
name = post.name
rows = [post]
pager = false
else
# never reached
raise "unknown route type: #{route[:type]}"
end
# create page
page = PageHTMLView.new(
title: name,
body: rows.map { |post| post.to_s }.join,
)
# render page
context.response.content_type = page.content_type
context.response.puts page
end
#####################
# draw tags methods #
#####################
TAG_TEMPLATES = TemplateCache.new({
body: "
<div class='post'>
<div class='name'>Tags</div>
<div class='body'>
<ul class='tags'>%{tags}</ul>
</div>
</div>
",
tag: "
<li class='tag'>
<a
href='%{p}%{name}/'
title='View posts matching tag %{name}.'
>
%{name} (%{num_posts} posts)
</a>
</li>
",
})
private def draw_tags(context, tags)
# generate tag url prefix
p = (context.request.path || "").match(/\/$/) ? "" : "./tag/"
# create page
page = PageHTMLView.new(
title: "Tags",
body: TAG_TEMPLATES[:body].run({
"tags": tags.map { |row|
TAG_TEMPLATES[:tag].run(row.reduce({
"p": p
}) do |r, k, v|
r[k] = HTML.escape(v.to_s)
r
end)
}.join,
})
)
# render page
context.response.content_type = page.content_type
context.response.puts page
end
end
|
