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 req = uri.split("/")
 140                 if req.has("people") then
 141                         return (new OpportunityPeopleREST).answer(request, uri)
 142                 else if req.has("answer") then
 143                         return (new OpportunityAnswerREST).answer(request, uri)
 144                 else if req.has("meetup") then
 145                         return (new OpportunityMeetupREST).answer(request, uri)
 146                 else
 147                         return new HttpResponse(400)
 148                 end
 149         end
 150
 151 end
 152
 153 # REST Actions working on People
 154 class OpportunityPeopleREST
 155         super OpportunityAction
 156
 157         redef fun answer(request, uri) do
 158                 # Should be DELETE for true REST API
 159                 # TODO : change method to DELETE once supported by Nitcorn
 160                 if request.method == "POST" then
 161                         var meth = request.string_arg("method")
 162                         if meth == null then return bad_req
 163                         if meth != "DELETE" then return bad_req
 164                         var pid = request.int_arg("p_id")
 165                         if pid == null then return bad_req
 166                         var db = new OpportunityDB.open(db_path)
 167                         db.remove_people_by_id(pid)
 168                         db.close
 169                         return new HttpResponse(200)
 170                 end
 171                 return new HttpResponse(400)
 172         end
 173
 174 end
 175
 176 # REST Actions working on Answers
 177 class OpportunityAnswerREST
 178         super OpportunityAction
 179
 180         redef fun answer(request, uri) do
 181                 var persid = request.int_arg("pers_id")
 182                 var ansid = request.int_arg("answer_id")
 183                 var ans = request.int_arg("answer")
 184                 if persid == null or ansid == null or ans == null then return bad_req
 185                 var db = new OpportunityDB.open(db_path)
 186                 db.change_answer(ansid, persid, ans)
 187                 db.close
 188                 return new HttpResponse(200)
 189         end
 190 end
 191
 192 # REST Actions working on Meetups
 193 class OpportunityMeetupREST
 194         super OpportunityAction
 195
 196         redef fun answer(request, uri) do
 197                 var args = uri.split("/")
 198                 if args.has("new_pers") then
 199                         var name = request.string_arg("persname")
 200                         var m_id = request.string_arg("meetup_id")
 201                         var ans_str = request.string_arg("answers")
 202                         if name == null or m_id == null or ans_str == null then return bad_req
 203                         var ans = ans_str.split("&")
 204                         var ansmap = new HashMap[Int, Int]
 205                         for i in ans do
 206                                 var mp = i.split("=")
 207                                 var id = mp.first.split("_").last
 208                                 var b = mp.last.to_i
 209                                 if not id.is_numeric then continue
 210                                 ansmap[id.to_i] = b
 211                         end
 212                         var db = new OpportunityDB.open(db_path)
 213                         var m = db.find_meetup_by_id(m_id)
 214                         var sublen = name.index_of(' ')
 215                         var rname = ""
 216                         var rsurname = ""
 217                         if sublen == -1 then
 218                                 rsurname = name
 219                         else
 220                                 rsurname = name.substring(0, sublen)
 221                                 rname = name.substring_from(sublen + 1)
 222                         end
 223                         var p = new People(rname, rsurname)
 224                         for i in m.answers(db) do
 225                                 if not ansmap.has_key(i.id) then
 226                                         p.answers[i] = 0
 227                                 else
 228                                         p.answers[i] = ansmap[i.id]
 229                                 end
 230                         end
 231                         p.commit(db)
 232                         db.close
 233                         var rsp = new HttpResponse(200)
 234                         rsp.body = p.id.to_s
 235                         return rsp
 236                 end
 237                 return new HttpResponse(400)
 238         end
 239 end