Add multiple langue

migrations/20200729065404-add-multi-language-table.js

@@ -0,0 +1,53 @@
+'use strict';
+
+var dbm;
+var type;
+var seed;
+var fs = require('fs');
+var path = require('path');
+var Promise;
+
+/**
+  * We receive the dbmigrate dependency from dbmigrate initially.
+  * This enables us to not have to rely on NODE_PATH.
+  */
+exports.setup = function(options, seedLink) {
+  dbm = options.dbmigrate;
+  type = dbm.dataType;
+  seed = seedLink;
+  Promise = options.Promise;
+};
+
+exports.up = function(db) {
+  var filePath = path.join(__dirname, 'sqls', '20200729065404-add-multi-language-table-up.sql');
+  return new Promise( function( resolve, reject ) {
+    fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){
+      if (err) return reject(err);
+      console.log('received data: ' + data);
+
+      resolve(data);
+    });
+  })
+  .then(function(data) {
+    return db.runSql(data);
+  });
+};
+
+exports.down = function(db) {
+  var filePath = path.join(__dirname, 'sqls', '20200729065404-add-multi-language-table-down.sql');
+  return new Promise( function( resolve, reject ) {
+    fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){
+      if (err) return reject(err);
+      console.log('received data: ' + data);
+
+      resolve(data);
+    });
+  })
+  .then(function(data) {
+    return db.runSql(data);
+  });
+};
+
+exports._meta = {
+  "version": 1
+};

migrations/sqls/20200729065404-add-multi-language-table-down.sql

@@ -0,0 +1,3 @@
+/* Replace with your SQL commands */
+
+DROP TABLE language_preference;

migrations/sqls/20200729065404-add-multi-language-table-up.sql

@@ -0,0 +1,9 @@
+/* Replace with your SQL commands */
+
+CREATE TABLE language_preference (
+    id INT GENERATED ALWAYS AS IDENTITY,
+    user_id INT,
+    selected_language VARCHAR(60) NULL,
+    PRIMARY KEY(id),
+    CONSTRAINT user_id FOREIGN KEY(user_id) REFERENCES users(id)
+);

src/controllers/courses/course-controller.ts

@@ -147,7 +147,7 @@ export default class CourseController {
           .orderBy("exercises.sequence_num", "asc");
       } else {
         let xyz =
-          "(SELECT max(submissions.id) FROM submissions WHERE exercise_id = exercises.id " +
+          "(SELECT id FROM submissions WHERE exercise_id = exercises.id " +
           "AND user_id = " +
           request.user_id +
           " ORDER BY state ASC LIMIT 1)";
@@ -176,7 +176,6 @@ export default class CourseController {
           .where({ "exercises.course_id": request.params.courseId })
           .orderBy("exercises.sequence_num", "asc");
       }
-
       query.then(rows => {
         let exercise = rows[0];
         for (let i = 0; i < rows.length; i++) {
@@ -208,7 +207,9 @@ export default class CourseController {
           }
         }
         resolve({ data: exercises });
-      });
+      }).catch((err) => {
+        console.log(err)
+      })
     });
   }
 
@@ -273,13 +274,12 @@ export default class CourseController {
           )
           .where({ "exercises.slug": request.query.slug });
         exerciseQuery.then(rows => {
+          rows[0].content = rows[0].content.match(/hi_text/g) ? JSON.parse(rows[0].content): rows[0].content;
           resolve(rows[0]);
-
-
         });
       } else {
         let xyz =
-          "(SELECT max(submissions.id) FROM submissions WHERE exercise_id = exercises.id " +
+          "(SELECT id FROM submissions WHERE exercise_id = exercises.id " +
           "AND user_id = " +
           request.user_id +
           "  ORDER BY state ASC LIMIT 1)";
@@ -526,9 +526,7 @@ export default class CourseController {
         .then((rows) => {
           // here we getting the role of user 
           const isAdmin =
-            rows.length > 0 && getUserRoles(rows).isAdmin === true
-              ? true
-              : false;
+            rows.length > 0 && getUserRoles(rows).isAdmin === true ? true : false;
           if (isAdmin === false) {
             reject(
               Boom.expectationFailed(

src/controllers/courses/course-routes.ts

@@ -46,7 +46,7 @@ export default function (server: Hapi.Server, serverConfigs: IServerConfiguratio
 
     server.route({
         method: 'POST',
-        path: '/updateCourses{name}',
+        path: '/updateCourses/{name}',
         config: {
             description: 'update the courses by Courses name',
             validate: {

src/controllers/users/user-controller.ts

@@ -6,7 +6,7 @@ import { IServerConfigurations } from "../../configurations";
 // import { NotesModel } from "../../models/notes-model";
 
 import { UserModel } from "../../models/user-model";
-
+import { SelectLanguageModel } from "../../models/select-language-model";
 import * as fs from "fs";
 import * as Boom from "boom";   
 import * as nconf from "nconf";
@@ -28,12 +28,14 @@ export default class UserController {
     private configs: IServerConfigurations;
     private database: any;
     private userModel: UserModel;
+    private selectLanguageModel: SelectLanguageModel;
     // private notesModel: NotesModel;
 
     constructor(configs: IServerConfigurations, database: any) {
         this.database = database;
         this.configs = configs;
         this.userModel = new UserModel(this.configs);
+        this.selectLanguageModel = new SelectLanguageModel(this.configs);
         // this.notesModel = new NotesModel(this.configs);
 
 
@@ -206,15 +208,24 @@ export default class UserController {
                                 });
                         }
                     })
-                    .then((user) => {
-
+                    .then( async (user) => {
+
+                        const selected_language =  await database('language_preference')
+                            .select("*")
+                            .where({'user_id': user.id})
+                        return {
+                            user,
+                            selected_language
+                        }
+                    })
+                    .then((userDetails) => {
+                        const { selected_language, user } = userDetails;
                         resolve({
                             'user': user,
-                            'jwt': this.userModel.getJWTToken(user)
+                            'jwt': this.userModel.getJWTToken(user),
+                            'selected_language': selected_language.length ? selected_language[0].selected_language : 'hi' 
                         });
-
-
-                    });
+                    })
 
             });
         });
@@ -362,7 +373,37 @@ export default class UserController {
     //     });
     // }
 
+    // Add or update users prefered language.
+    public addUpdatePreferedLanguage(request, h) {
+        const selectedLanguageObj = {
+            user_id: request.params.userId,
+            selected_language: request.payload.selected_language
+        }
+
+        return new Promise((resolve, rejects) => {
+            this.selectLanguageModel.upsert(selectedLanguageObj, { 'user_id': selectedLanguageObj['user_id'] }, true)
+            .then(() => {
+                resolve({
+                    'status': true 
+                });
+            }).catch(() => {
+                resolve({
+                    'status': false
+                });
+            });
+        });
+    }
 
+    // get users prefered language.
+    public getPreferedLnaguageInfo(request, h) {
+        let user_id = request.params.userId;
+        return new Promise((resolve, reject) => {
+            this.selectLanguageModel.findOne({ user_id: user_id }).then(obj => {
+                resolve(obj);
+            });
+        });
+    }
+
     public getGitHubAccessUrl(request, h) {
         const email = request.params.email;
         const githubAccessKey = serverConfigs.githubAccess;

src/controllers/users/user-routes.ts

@@ -3,7 +3,7 @@ import * as Joi from "joi";
 import { IServerConfigurations } from "../../configurations";
 
 import UserController from "./user-controller";
-import { noteSchema, userSchema } from "./user-schemas";
+import { noteSchema, userSchema, languagePreferenceSchema } from "./user-schemas";
 import * as Boom from 'boom';
 
 export default function (server: Hapi.Server, serverConfigs: IServerConfigurations, database: any) {
@@ -30,7 +30,8 @@ export default function (server: Hapi.Server, serverConfigs: IServerConfiguratio
                     "user": userSchema,
                     "jwt": Joi.string().required()
                         .default("xxx.yyy.zzz")
-                        .description("Will authenticate all the future requests.")
+                        .description("Will authenticate all the future requests."),
+                    "selected_language": Joi.string()
                 })
             },
             plugins: {
@@ -290,4 +291,54 @@ export default function (server: Hapi.Server, serverConfigs: IServerConfiguratio
             handler: userController.getGitHubAccessUrl,
         }
     });
+
+    server.route({
+        method: 'POST',
+        path: '/users/{userId}/selected_language',
+        config: {
+            description: 'Select language according to the user preference.',
+            validate: {
+                params: {
+                    userId: Joi.number().required(),
+                },
+                payload: Joi.object({
+                    selected_language: Joi.string().required()
+                })
+            },
+            response: {
+                schema: {
+                    status: Joi.bool().required()
+                }
+            },
+            plugins: {
+                'hapi-swagger': {
+                    responses: {
+                        '201': {
+                            'description': 'successfully added selected language as prefered language.'
+                        }
+                    }
+                }
+            },
+            tags: ['api'],
+            handler: userController.addUpdatePreferedLanguage
+        }
+    });
+
+    server.route({
+        method: 'GET',
+        path: '/users/{userId}/selected_language',
+        config: {
+            description: 'Get users prefred language by user Id.',
+            validate: {
+                params: {
+                    userId: Joi.number().required(),
+                }
+            },
+            response: {
+                schema: languagePreferenceSchema
+            },
+            tags: ['api'],
+            handler: userController.getPreferedLnaguageInfo,
+        }
+    });
 }

src/controllers/users/user-schemas.ts

@@ -35,3 +35,9 @@ export const userRoleSchema: Joi.ObjectSchema = Joi.object({
     mentor: Joi.allow(null),
     mentee: Joi.number().allow(null),
 });
+
+export const languagePreferenceSchema: Joi.ObjectSchema = Joi.object({
+    id: Joi.number(),
+    user_id: Joi.number(),
+    selected_language: Joi.string()
+});

src/models/select-language-model.ts

@@ -0,0 +1,16 @@
+//ignore this
+// import * as Mongoose from "mongoose";
+import database from '../index';
+import DBTable from './dbtable';
+
+import {IServerConfigurations} from "../configurations/index";
+
+export class SelectLanguageModel extends DBTable {
+    configs: any;
+
+    constructor(configs: IServerConfigurations) {
+        super(database, "language_preference");
+        this.configs = configs;
+    }
+
+}

src/seed-courses/globals.ts

@@ -7,6 +7,7 @@ var courseDir, // Path of the course directory relative to this file
     revSeqNumbers = {},
     toReadFiles = [],
     course_id,
+    multi_languge = ["hi", "en", "te", "ta"],
     defaultCourseLogo = "http://navgurukul.org/img/sqlogo.jpg";
 
 export {
@@ -18,5 +19,6 @@ export {
   revSeqNumbers,
   toReadFiles,
   course_id,
+  multi_languge,
   defaultCourseLogo
 }