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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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58
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6 local Table = require "luan:Table.luan"
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7 local sort = Table.sort or error()
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8 local concat = Table.concat or error()
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12
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9 local Http = require "luan:http/Http.luan"
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4
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10 local Db = require "site:/lib/Db.luan"
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11 local run_in_transaction = Db.run_in_transaction or error()
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12
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12 local Utils = require "site:/lib/Utils.luan"
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13 local base_url = Utils.base_url or error()
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4
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14
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15
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16 local Chat = {}
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17
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18 local function from_doc(doc)
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19 doc.type == "chat" or error "wrong type"
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20 return Chat.new {
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21 id = doc.id
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22 user_ids = doc.chat_user_ids
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23 updated = doc.chat_updated
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58
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24 key = doc.chat_key
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4
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25 }
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26 end
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27
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28 local function to_doc(chat)
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29 return {
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30 type = "chat"
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31 id = chat.id
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32 chat_user_ids = chat.user_ids or error()
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33 chat_updated = chat.updated or error()
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58
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34 chat_key = chat.key or error()
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4
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35 }
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36 end
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37
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58
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38 local function get_chat_key(user_ids)
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39 sort(user_ids)
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40 return concat(user_ids,"~")
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41 end
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42
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4
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43 function Chat.new(chat)
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44 chat.updated = chat.updated or time_now()
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58
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45 chat.key = chat.key or get_chat_key(chat.user_ids)
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4
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46
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47 function chat.save()
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48 local doc = to_doc(chat)
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49 Db.save(doc)
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50 chat.id = doc.id
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51 end
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52
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53 function chat.delete()
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54 run_in_transaction( function()
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55 local id = chat.id
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11
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56 Db.delete("post_chat_id:"..id)
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55
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57 Db.delete("chatuser_chat_id:"..id)
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4
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58 Db.delete("id:"..id)
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59 end )
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60 end
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61
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12
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62 function chat.http_push(message)
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63 local url = base_url().."/chat/"..chat.id
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64 Http.push(url,message)
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65 end
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66
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46
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67 function chat.other_user_id(my_id)
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68 for _, user_id in ipairs(chat.user_ids) do
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69 if user_id ~= my_id then
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70 return user_id
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71 end
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72 end
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73 error()
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74 end
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75
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57
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76 local function get_chatuser_key(user)
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53
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77 return chat.id.."~"..user.id
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78 end
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79
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80 function chat.unread(user)
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57
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81 local doc = Db.get_document("chatuser_key:"..get_chatuser_key(user))
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53
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82 local read_date = doc and doc.read_date or 0
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83 return Db.count("+post_chat_id:"..chat.id.." +post_date:["..read_date.." TO *]")
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84 end
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85
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86 function chat.read(user)
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87 run_in_transaction( function()
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57
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88 local chatuser_key = get_chatuser_key(user)
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89 local doc = Db.get_document("chatuser_key:"..chatuser_key) or {
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53
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90 type = "chatuser"
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57
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91 chatuser_key = chatuser_key
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55
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92 chatuser_chat_id = chat.id or error()
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53
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93 }
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94 doc.read_date = time_now()
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95 Db.save(doc)
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96 end )
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97 end
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98
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4
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99 return chat
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100 end
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101
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102 function Chat.search(query,sort,rows)
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103 rows = rows or 1000000
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104 local chats = {}
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105 local docs = Db.search(query,1,rows,{sort=sort})
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106 for _, doc in ipairs(docs) do
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107 chats[#chats+1] = from_doc(doc)
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108 end
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109 return chats
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110 end
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111
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7
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112 function Chat.get_by_id(id)
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113 local doc = Db.get_document("id:"..id)
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114 return doc and doc.type=="chat" and from_doc(doc) or nil
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115 end
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116
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58
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117 function Chat.get_by_user_ids(user_ids)
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118 local key = get_chat_key(user_ids)
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119 local doc = Db.get_document("chat_key:"..key)
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120 return doc and from_doc(doc)
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121 end
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122
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4
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123 return Chat
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