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254 | -----------------------------------------------------------------------
-- awa-questions-modules -- Module questions
-- Copyright (C) 2012, 2013, 2015, 2016, 2018, 2022 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
with Ada.Calendar;
with Ada.Characters.Conversions;
with AWA.Permissions;
with AWA.Services.Contexts;
with AWA.Users.Models;
with AWA.Workspaces.Models;
with AWA.Workspaces.Modules;
with Wiki;
with Wiki.Utils;
with ADO.Sessions;
with ADO.Statements;
with Util.Log.Loggers;
with AWA.Modules.Beans;
with AWA.Modules.Get;
with AWA.Questions.Beans;
with AWA.Applications;
package body AWA.Questions.Modules is
Log : constant Util.Log.Loggers.Logger := Util.Log.Loggers.Create ("AWA.Questions.Module");
package Register is new AWA.Modules.Beans (Module => Question_Module,
Module_Access => Question_Module_Access);
-- ------------------------------
-- Initialize the questions module.
-- ------------------------------
overriding
procedure Initialize (Plugin : in out Question_Module;
App : in AWA.Modules.Application_Access;
Props : in ASF.Applications.Config) is
begin
Log.Info ("Initializing the questions module");
-- Setup the resource bundles.
App.Register ("questionMsg", "questions");
-- Edit and save a question.
Register.Register (Plugin => Plugin,
Name => "AWA.Questions.Beans.Question_Bean",
Handler => AWA.Questions.Beans.Create_Question_Bean'Access);
-- Edit and save an answer.
Register.Register (Plugin => Plugin,
Name => "AWA.Questions.Beans.Answer_Bean",
Handler => AWA.Questions.Beans.Create_Answer_Bean'Access);
-- List of questions.
Register.Register (Plugin => Plugin,
Name => "AWA.Questions.Beans.Question_List_Bean",
Handler => AWA.Questions.Beans.Create_Question_List_Bean'Access);
-- Display a question with its answers.
Register.Register (Plugin => Plugin,
Name => "AWA.Questions.Beans.Question_Display_Bean",
Handler => AWA.Questions.Beans.Create_Question_Display_Bean'Access);
AWA.Modules.Module (Plugin).Initialize (App, Props);
end Initialize;
-- ------------------------------
-- Get the questions module.
-- ------------------------------
function Get_Question_Module return Question_Module_Access is
function Get is new AWA.Modules.Get (Question_Module, Question_Module_Access, NAME);
begin
return Get;
end Get_Question_Module;
-- ------------------------------
-- Create or save the question.
-- ------------------------------
procedure Save_Question (Model : in Question_Module;
Question : in out AWA.Questions.Models.Question_Ref'Class) is
pragma Unreferenced (Model);
function To_Wide (Item : in String) return Wide_Wide_String
renames Ada.Characters.Conversions.To_Wide_Wide_String;
Ctx : constant Services.Contexts.Service_Context_Access := AWA.Services.Contexts.Current;
User : constant AWA.Users.Models.User_Ref := Ctx.Get_User;
DB : ADO.Sessions.Master_Session := AWA.Services.Contexts.Get_Master_Session (Ctx);
WS : AWA.Workspaces.Models.Workspace_Ref;
begin
Ctx.Start;
if Question.Is_Inserted then
Log.Info ("Updating question {0}", ADO.Identifier'Image (Question.Get_Id));
WS := AWA.Workspaces.Models.Workspace_Ref (Question.Get_Workspace);
else
Log.Info ("Creating new question {0}", String '(Question.Get_Title));
AWA.Workspaces.Modules.Get_Workspace (DB, Ctx, WS);
-- Check that the user has the create permission on the given workspace.
AWA.Permissions.Check (Permission => ACL_Create_Questions.Permission,
Entity => WS);
Question.Set_Workspace (WS);
Question.Set_Author (User);
end if;
declare
Text : constant String := Wiki.Utils.To_Text (To_Wide (Question.Get_Description),
Wiki.SYNTAX_MARKDOWN);
Last : Natural;
begin
if Text'Length < SHORT_DESCRIPTION_LENGTH then
Last := Text'Last;
else
Last := SHORT_DESCRIPTION_LENGTH;
end if;
Question.Set_Short_Description (Text (Text'First .. Last) & "...");
end;
if not Question.Is_Inserted then
Question.Set_Create_Date (Ada.Calendar.Clock);
else
Question.Set_Edit_Date (ADO.Nullable_Time '(Is_Null => False,
Value => Ada.Calendar.Clock));
end if;
Question.Save (DB);
Ctx.Commit;
end Save_Question;
-- ------------------------------
-- Delete the question.
-- ------------------------------
procedure Delete_Question (Model : in Question_Module;
Question : in out AWA.Questions.Models.Question_Ref'Class) is
pragma Unreferenced (Model);
Ctx : constant Services.Contexts.Service_Context_Access := AWA.Services.Contexts.Current;
DB : ADO.Sessions.Master_Session := AWA.Services.Contexts.Get_Master_Session (Ctx);
begin
Ctx.Start;
-- Check that the user has the delete permission on the given question.
AWA.Permissions.Check (Permission => ACL_Delete_Questions.Permission,
Entity => Question);
-- Before deleting the question, delete the associated answers.
declare
Stmt : ADO.Statements.Delete_Statement
:= DB.Create_Statement (AWA.Questions.Models.ANSWER_TABLE);
begin
Stmt.Set_Filter (Filter => "question_id = ?");
Stmt.Add_Param (Value => Question);
Stmt.Execute;
end;
Question.Delete (DB);
Ctx.Commit;
end Delete_Question;
-- ------------------------------
-- Load the question.
-- ------------------------------
procedure Load_Question (Model : in Question_Module;
Question : in out AWA.Questions.Models.Question_Ref'Class;
Id : in ADO.Identifier;
Found : out Boolean) is
DB : ADO.Sessions.Session := Model.Get_Session;
begin
Question.Load (DB, Id, Found);
end Load_Question;
-- ------------------------------
-- Create or save the answer.
-- ------------------------------
procedure Save_Answer (Model : in Question_Module;
Question : in AWA.Questions.Models.Question_Ref'Class;
Answer : in out AWA.Questions.Models.Answer_Ref'Class) is
pragma Unreferenced (Model);
Ctx : constant Services.Contexts.Service_Context_Access := AWA.Services.Contexts.Current;
User : constant AWA.Users.Models.User_Ref := Ctx.Get_User;
DB : ADO.Sessions.Master_Session := AWA.Services.Contexts.Get_Master_Session (Ctx);
begin
Ctx.Start;
if Answer.Is_Inserted then
Log.Info ("Updating question {0}", ADO.Identifier'Image (Answer.Get_Id));
else
Log.Info ("Creating new answer for {0}", ADO.Identifier'Image (Question.Get_Id));
-- Check that the user has the create permission on the given workspace.
AWA.Permissions.Check (Permission => ACL_Answer_Questions.Permission,
Entity => Question);
Answer.Set_Author (User);
end if;
if not Answer.Is_Inserted then
Answer.Set_Create_Date (Ada.Calendar.Clock);
Answer.Set_Question (Question);
else
Answer.Set_Edit_Date (ADO.Nullable_Time '(Value => Ada.Calendar.Clock,
Is_Null => False));
end if;
Answer.Save (DB);
Ctx.Commit;
end Save_Answer;
-- ------------------------------
-- Delete the answer.
-- ------------------------------
procedure Delete_Answer (Model : in Question_Module;
Answer : in out AWA.Questions.Models.Answer_Ref'Class) is
pragma Unreferenced (Model);
Ctx : constant Services.Contexts.Service_Context_Access := AWA.Services.Contexts.Current;
DB : ADO.Sessions.Master_Session := AWA.Services.Contexts.Get_Master_Session (Ctx);
begin
Ctx.Start;
-- Check that the user has the delete permission on the given answer.
AWA.Permissions.Check (Permission => ACL_Delete_Answer.Permission,
Entity => Answer);
Answer.Delete (DB);
Ctx.Commit;
end Delete_Answer;
-- ------------------------------
-- Load the answer.
-- ------------------------------
procedure Load_Answer (Model : in Question_Module;
Answer : in out AWA.Questions.Models.Answer_Ref'Class;
Question : in out AWA.Questions.Models.Question_Ref'Class;
Id : in ADO.Identifier;
Found : out Boolean) is
DB : ADO.Sessions.Session := Model.Get_Session;
begin
Answer.Load (DB, Id, Found);
Question := Answer.Get_Question;
end Load_Answer;
end AWA.Questions.Modules;
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