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4
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1 local Luan = require "luan:Luan.luan"
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2 local error = Luan.error
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3 local ipairs = Luan.ipairs or error()
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4 local Time = require "luan:Time.luan"
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5 local time_now = Time.now or error()
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12
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6 local Http = require "luan:http/Http.luan"
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4
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7 local Db = require "site:/lib/Db.luan"
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8 local run_in_transaction = Db.run_in_transaction or error()
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12
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9 local Utils = require "site:/lib/Utils.luan"
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10 local base_url = Utils.base_url or error()
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4
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11
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12
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13 local Chat = {}
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14
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15 local function from_doc(doc)
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16 doc.type == "chat" or error "wrong type"
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17 return Chat.new {
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18 id = doc.id
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19 user_ids = doc.chat_user_ids
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20 updated = doc.chat_updated
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21 }
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22 end
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23
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24 local function to_doc(chat)
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25 return {
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26 type = "chat"
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27 id = chat.id
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28 chat_user_ids = chat.user_ids or error()
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29 chat_updated = chat.updated or error()
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30 }
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31 end
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32
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33 function Chat.new(chat)
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34 chat.updated = chat.updated or time_now()
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35
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36 function chat.save()
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37 local doc = to_doc(chat)
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38 Db.save(doc)
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39 chat.id = doc.id
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40 end
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41
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42 function chat.delete()
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43 run_in_transaction( function()
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44 local id = chat.id
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11
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45 Db.delete("post_chat_id:"..id)
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55
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46 Db.delete("chatuser_chat_id:"..id)
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4
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47 Db.delete("id:"..id)
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48 end )
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49 end
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50
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12
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51 function chat.http_push(message)
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52 local url = base_url().."/chat/"..chat.id
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53 Http.push(url,message)
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54 end
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55
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46
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56 function chat.other_user_id(my_id)
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57 for _, user_id in ipairs(chat.user_ids) do
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58 if user_id ~= my_id then
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59 return user_id
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60 end
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61 end
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62 error()
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63 end
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64
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53
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65 local function get_chatuser_id(user)
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66 return chat.id.."~"..user.id
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67 end
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68
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69 function chat.unread(user)
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70 local doc = Db.get_document("chatuser_id:"..get_chatuser_id(user))
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71 local read_date = doc and doc.read_date or 0
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72 return Db.count("+post_chat_id:"..chat.id.." +post_date:["..read_date.." TO *]")
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73 end
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74
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75 function chat.read(user)
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76 run_in_transaction( function()
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77 local chatuser_id = get_chatuser_id(user)
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78 local doc = Db.get_document("chatuser_id:"..chatuser_id) or {
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79 type = "chatuser"
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80 chatuser_id = chatuser_id
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55
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81 chatuser_chat_id = chat.id or error()
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53
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82 }
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83 doc.read_date = time_now()
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84 Db.save(doc)
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85 end )
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86 end
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87
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4
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88 return chat
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89 end
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90
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91 function Chat.search(query,sort,rows)
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92 rows = rows or 1000000
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93 local chats = {}
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94 local docs = Db.search(query,1,rows,{sort=sort})
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95 for _, doc in ipairs(docs) do
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96 chats[#chats+1] = from_doc(doc)
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97 end
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98 return chats
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99 end
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100
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7
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101 function Chat.get_by_id(id)
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102 local doc = Db.get_document("id:"..id)
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103 return doc and doc.type=="chat" and from_doc(doc) or nil
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104 end
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105
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4
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106 return Chat
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