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3
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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 String = require "luan:String.luan"
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4 local trim = String.trim or error()
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5 local Html = require "luan:Html.luan"
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6 local url_encode = Html.url_encode or error()
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7 local Io = require "luan:Io.luan"
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8 local Http = require "luan:http/Http.luan"
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9 local Shared = require "site:/lib/Shared.luan"
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10 local head = Shared.head or error()
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11 local header = Shared.header or error()
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12 local footer = Shared.footer or error()
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13 local base_url = Shared.base_url or error()
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14 local Forum = require "site:/lib/Forum.luan"
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15 local forum_title = Forum.title or error()
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16 local User = require "site:/lib/User.luan"
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17 local Db = require "site:/lib/Db.luan"
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18 local run_in_transaction = Db.run_in_transaction or error()
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19
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20
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21 local function get_user(email,password)
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22 local user = User.get_by_email(email)
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23 user or error "email not found"
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24 user.password == password or error "wrong password"
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25 return user
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26 end
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27
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28 local function login(user)
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29 Http.response.set_persistent_cookie("user",user.name)
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30 Http.response.set_persistent_cookie("password",user.password)
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31 Http.request.cookies.user = user.name
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32 Http.request.cookies.password = user.password
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33 end
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34
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35 local function register_form(user,name,error_message)
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36 if error_message ~= nil then %>
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37 <p error>Error: <%= error_message %></p>
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38 <% end %>
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39 <form>
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40 <input type="hidden" name="email" value="<%= user.email %>" >
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41 <input type="hidden" name="password" value="<%= user.password %>" >
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42 <label>User name for <%= user.email %></label>
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43 <input type="text" name="name" value="<%= name or "" %>" autofocus required>
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44 <input type="submit" value="Register">
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45 </form>
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46 <%
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47 end
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48
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49 local function page(contents)
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50 Io.stdout = Http.response.text_writer()
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51 %>
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52 <!doctype html>
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53 <html>
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54 <head>
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55 <% head() %>
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56 <title><%=forum_title%> - Login or Register</title>
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57 </head>
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58 <body>
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59 <% header() %>
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60 <div content>
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61 <h1>Login or Register</h1>
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62 <%
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63 contents()
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64 %>
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65 </div>
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66 <% footer() %>
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67 </body>
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68 </html>
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69 <%
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70 end
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71
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72 return function()
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73 local email = Http.request.parameters.email
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74 local password = Http.request.parameters.password
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75 local name = Http.request.parameters.name
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76 if email == nil then
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77 page(function()
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78 %>
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79 <form>
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80 <label>Email address</label>
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81 <input type="email" name="email" autofocus required>
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82 <input type="submit" value="Login or Register">
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83 </form>
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84 <%
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85 end)
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86 elseif password == nil then
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87 local user = User.get_or_create_by_email(email)
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88 page(function()
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89 %>
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90 <p>We have sent you an email. Please check your email to login or register.</p>
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91 <p>hack - <a href="<%=base_url()%>/login.html?email=<%=url_encode(email)%>&password=<%=user.password%>">link</a></p>
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92 <%
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93 end)
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94 elseif name == nil then
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95 local user = get_user(email,password)
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96 if user.name == nil then
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97 page(function()
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98 register_form(user)
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99 end)
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100 else
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101 login(user)
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102 page(function()
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103 %>
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104 <p>You are now logged in.</p>
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105 <%
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106 end)
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107 end
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108 else
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109 name = trim(name)
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110 #name > 0 or error "empty name"
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111 local error_message = nil
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112 local user
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113 run_in_transaction( function()
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114 user = get_user(email,password)
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115 if user.name ~= name and User.get_by_name(name) ~= nil then
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116 error_message = "Name already in use"
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117 else
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118 user.name = name
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119 user.save()
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120 end
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121 end )
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122 if error_message ~= nil then
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123 page(function()
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124 register_form(user,name,error_message)
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125 end)
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126 else
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127 login(user)
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128 page(function()
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129 %>
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130 <p>You are now registered.</p>
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131 <%
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132 end)
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133 end
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134 end
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135 end
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