contrib/opportunity/src/opportunity_controller.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License
  14
  15 # Actions for Opportunity web application
  16 module opportunity_controller
  17
  18 import nitcorn
  19 import sha1
  20 import templates
  21 import opportunity_model
  22
  23 # Any kind of opportunity `Action` (serves a request)
  24 abstract class OpportunityAction
  25         super Action
  26
  27         # Path to db
  28         var db_path = "opportunity"
  29
  30         # Returns a bad request with an error code 400
  31         #
  32         # TODO: Add a specific body to the bad request page.
  33         fun bad_req: HttpResponse do
  34                 var rsp = new HttpResponse(400)
  35                 rsp.body = (new OpportunityHomePage).write_to_string
  36                 return rsp
  37         end
  38 end
  39
  40 # Welcome page for Opportunity
  41 class OpportunityWelcome
  42         super OpportunityAction
  43
  44         redef fun answer(request, url) do
  45                 print "Received request for {url}"
  46                 var get = request.get_args
  47                 var rq = url.split("/")
  48                 if rq.has("meetup_create") then
  49                         var ansset = new HashSet[String]
  50                         var ans_tmp = "answer_"
  51                         var cnt = 1
  52                         loop
  53                                 var anss = request.string_arg(ans_tmp + cnt.to_s)
  54                                 cnt += 1
  55                                 if anss == null then break
  56                                 if ansset.has(anss) then continue
  57                                 ansset.add anss
  58                         end
  59
  60                         var mname = request.string_arg("meetup_name")
  61                         var mdate = request.string_arg("meetup_date")
  62                         var mplace = request.string_arg("meetup_place")
  63                         var mmodestr = request.string_arg("meetup_mode")
  64                         var mmode = 0
  65                         if mdate == null then mdate = ""
  66                         if mplace == null then mplace = ""
  67                         if mmodestr != null then
  68                                 mmode = 1
  69                         end
  70                         if mname == null then
  71                                 mname = ""
  72                                 var rsp = new HttpResponse(200)
  73                                 var meetpage = new MeetupCreationPage
  74                                 var meet = new Meetup(mname, mdate, mplace, mmode)
  75                                 meetpage.ans = ansset
  76                                 meetpage.meet = meet
  77                                 meetpage.error = "'Meetup name' is a mandatory fields."
  78                                 rsp.body = meetpage.write_to_string
  79                                 return rsp
  80
  81                         end
  82                         var db = new OpportunityDB.open(db_path)
  83                         var meet = new Meetup(mname, mdate, mplace, mmode)
  84                         if ansset.is_empty then
  85                                 db.close
  86                                 var rsp = new HttpResponse(200)
  87                                 var meetpage = new MeetupCreationPage
  88                                 meetpage.meet = meet
  89                                 meetpage.error = "You need to input at least one answer."
  90                                 rsp.body = meetpage.write_to_string
  91                                 return rsp
  92                         end
  93                         if not meet.commit(db) then
  94                                 db.close
  95                                 var rsp = new HttpResponse(200)
  96                                 var meetpage = new MeetupCreationPage
  97                                 meetpage.meet = meet
  98                                 meetpage.ans = ansset
  99                                 meetpage.error = """<p>Could not create Meetup.</p>
 100                                 <p>Hmm, that's embarassing, the database indicates that your meetup already exists.</p>
 101                                 <p>If this is not a duplicated submission, please contact the mainainers of the website, you might have found a bug !</p>"""
 102                                 rsp.body = meetpage.write_to_string
 103                                 return rsp
 104                         end
 105                         for v in ansset do
 106                                 var ans = new Answer(v)
 107                                 ans.meetup = meet
 108                                 ans.commit(db)
 109                         end
 110                         db.close
 111                         var rsp = new HttpResponse(200)
 112                         rsp.body = (new MeetupConfirmation(meet)).write_to_string
 113                         return rsp
 114                 end
 115                 if rq.has("new_meetup") then
 116                         var rsp = new HttpResponse(200)
 117                         var page = new MeetupCreationPage
 118                         rsp.body = page.write_to_string
 119                         return rsp
 120                 end
 121                 if get.has_key("meetup_id") then
 122                         var rsp = new HttpResponse(200)
 123                         rsp.body = (new OpportunityMeetupPage.from_id(get["meetup_id"])).write_to_string
 124                         return rsp
 125                 end
 126                 var rsp = new HttpResponse(200)
 127                 rsp.body = (new OpportunityHomePage).write_to_string
 128                 return rsp
 129         end
 130
 131 end
 132
 133 # Any kind of REST request to Opportunity
 134 class OpportunityRESTAction
 135         super OpportunityAction
 136
 137         redef fun answer(request, uri) do
 138                 print "Received REST request from {uri}"
 139                 var get = request.get_args
 140                 var req = uri.split("/")
 141                 if req.has("people") then
 142                         return (new OpportunityPeopleREST).answer(request, uri)
 143                 else if req.has("answer") then
 144                         return (new OpportunityAnswerREST).answer(request, uri)
 145                 else if req.has("meetup") then
 146                         return (new OpportunityMeetupREST).answer(request, uri)
 147                 else
 148                         return new HttpResponse(400)
 149                 end
 150         end
 151
 152 end
 153
 154 # REST Actions working on People
 155 class OpportunityPeopleREST
 156         super OpportunityAction
 157
 158         redef fun answer(request, uri) do
 159                 # Should be DELETE for true REST API
 160                 # TODO : change method to DELETE once supported by Nitcorn
 161                 if request.method == "POST" then
 162                         var meth = request.string_arg("method")
 163                         if meth == null then return bad_req
 164                         if meth != "DELETE" then return bad_req
 165                         var pid = request.int_arg("p_id")
 166                         if pid == null then return bad_req
 167                         var db = new OpportunityDB.open(db_path)
 168                         db.remove_people_by_id(pid)
 169                         db.close
 170                         return new HttpResponse(200)
 171                 end
 172                 return new HttpResponse(400)
 173         end
 174
 175 end
 176
 177 # REST Actions working on Answers
 178 class OpportunityAnswerREST
 179         super OpportunityAction
 180
 181         redef fun answer(request, uri) do
 182                 var persid = request.int_arg("pers_id")
 183                 var ansid = request.int_arg("answer_id")
 184                 var ans = request.int_arg("answer")
 185                 if persid == null or ansid == null or ans == null then return bad_req
 186                 var db = new OpportunityDB.open(db_path)
 187                 db.change_answer(ansid, persid, ans)
 188                 db.close
 189                 return new HttpResponse(200)
 190         end
 191 end
 192
 193 # REST Actions working on Meetups
 194 class OpportunityMeetupREST
 195         super OpportunityAction
 196
 197         redef fun answer(request, uri) do
 198                 var args = uri.split("/")
 199                 if args.has("new_pers") then
 200                         var name = request.string_arg("persname")
 201                         var m_id = request.string_arg("meetup_id")
 202                         var ans_str = request.string_arg("answers")
 203                         if name == null or m_id == null or ans_str == null then return bad_req
 204                         var ans = ans_str.split("&")
 205                         var ansmap = new HashMap[Int, Int]
 206                         for i in ans do
 207                                 var mp = i.split("=")
 208                                 var id = mp.first.split("_").last
 209                                 var b = mp.last.to_i
 210                                 if not id.is_numeric then continue
 211                                 ansmap[id.to_i] = b
 212                         end
 213                         var db = new OpportunityDB.open(db_path)
 214                         var m = db.find_meetup_by_id(m_id)
 215                         var sublen = name.index_of(' ')
 216                         var rname = ""
 217                         var rsurname = ""
 218                         if sublen == -1 then
 219                                 rsurname = name
 220                         else
 221                                 rsurname = name.substring(0, sublen)
 222                                 rname = name.substring_from(sublen + 1)
 223                         end
 224                         var p = new People(rname, rsurname)
 225                         for i in m.answers(db) do
 226                                 if not ansmap.has_key(i.id) then
 227                                         p.answers[i] = 0
 228                                 else
 229                                         p.answers[i] = ansmap[i.id]
 230                                 end
 231                         end
 232                         p.commit(db)
 233                         db.close
 234                         var rsp = new HttpResponse(200)
 235                         rsp.body = p.id.to_s
 236                         return rsp
 237                 end
 238                 return new HttpResponse(400)
 239         end
 240 end