Mercurial Hosting > linkmystyle

comparison src/lib/Link.luan @ 0:8f4df159f06b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
start public repo
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 11 Jul 2025 20:57:49 -0600
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:8f4df159f06b
1 local Luan = require "luan:Luan.luan"
2 local error = Luan.error
3 local ipairs = Luan.ipairs or error()
4 local stringify = Luan.stringify or error()
5 local Number = require "luan:Number.luan"
6 local long = Number.long or error()
7 local float = Number.float or error()
8 local Db = require "site:/lib/Db.luan"
9 local Logging = require "luan:logging/Logging.luan"
10 local logger = Logging.logger "Link"
11
12
13 local Link = {}
14
15 local function from_doc(doc)
16 doc.type == "link" or error "wrong type"
17 return Link.new {
18 id = doc.id
19 url = doc.url
20 title = doc.title
21 owner_id = doc.link_owner_id
22 user_id = doc.link_user_id
23 order = doc.link_order
24 }
25 end
26
27 local function to_doc(link)
28 return {
29 type = "link"
30 id = link.id
31 url = link.url or error()
32 title = link.title or error()
33 link_owner_id = long(link.owner_id)
34 link_user_id = long(link.user_id)
35 link_order = float(link.order)
36 }
37 end
38
39 function Link.new(link)
40
41 function link.save()
42 local doc = to_doc(link)
43 Db.save(doc)
44 link.id = doc.id
45 end
46
47 function link.reload()
48 return Link.get_by_id(link.id) or error(link.id)
49 end
50
51 function link.delete()
52 Db.run_in_transaction( function()
53 Db.delete("id:"..link.id)
54 end )
55 end
56
57 function link.move_after(prev)
58 local links = Link.get_owner_links(link.owner_id)
59 if prev == nil then
60 link.order = links[1].order - 1
61 else
62 link.owner_id==prev.owner_id or error()
63 for i, x in ipairs(links) do
64 if prev.id == x.id then
65 if i == #links then
66 link.order = prev.order + 1
67 else
68 local next = links[i+1]
69 link.order = (prev.order + next.order) / 2
70 end
71 return
72 end
73 end
74 error()
75 end
76 end
77
78 return link
79 end
80
81 function Link.get_by_id(id)
82 local doc = Db.get_document("id:"..id)
83 return doc and from_doc(doc)
84 end
85
86 local function from_docs(docs)
87 local links = {}
88 for _, doc in ipairs(docs) do
89 local link = from_doc(doc)
90 links[#links+1] = link
91 end
92 return links
93 end
94
95 function Link.get_owner_links(owner_id)
96 local docs = Db.search("link_owner_id:"..owner_id,1,1000,{sort="link_order"})
97 return from_docs(docs)
98 end
99
100 return Link