diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 00000000..75a9c0b7
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,19 @@
+FROM node:8
+COPY lacave.js C:/wamp64/www/Web/lab_0/devops-lab/
+RUN npm install express
+
+
+RUN npm install mysql
+
+
+ENV MYSQL_HOST=localhost
+ENV MYSQL_USER=root
+ENV MYSQL_PASSWORD=
+ENV MYSQL_DATABASE=project
+ENV MYSQL_PORT=3306
+
+
+EXPOSE 3000
+
+
+CMD node C:/wamp64/www/Web/lab_0/devops-lab/lacave.js
diff --git a/answers.md b/answers.md
index b7025b97..40dc8cdd 100644
--- a/answers.md
+++ b/answers.md
@@ -1,41 +1,54 @@
 # Answers
 
-Lastname:
-Firstname:
+Lastname:Lacave
+Firstname:Gaspard
 
 ## 2.2
-command:
+command:docker run app
 
 ## 2.3
-question:
-command:
+question:It could not work before because the app was not linked to any port. We need then to add EXPOSE 3000 in the dockerfile and run the app with a new command listening to this port.
+command:docker run -it -p 3000:3000 app
 
 ## 2.5
-question:
-command:
+question:We must push the images with the good tag comporting the username first. In addition, we must login just before pushing on docker hub.
+command:docker tag f74a0ab9431 gaspardlcv/devops_lab:app
+docker login
+docker push gaspardlcv/devops_lab
 
 ## 2.6
-command:
+command:docker stop $(docker ps -a -q)
+docker rm $(docker ps -a -q)
+docker rmi -f $(docker images -a -q)
 
-question:
-command:
+question:We didn't had the image stored on our workplace. But docker succeded to build an image by getting it from our online repository. 
+It says then "Digest: sha256:9bdc72fd9eda4e336ff673c9c10dd89c77d29956f994534cc78e6d25d3c8be83
+Status: Downloaded newer image for gaspardlcv/devops_lab:app".
+command:docker run gaspardlcv/devops_lab:app
 
-command:
+command:docker run -detach gaspardlcv/devops_lab:app
 
 ## 2.7
-question:
-question:
-command:
+question:"docker ps" show us the list of running containers. We can find back our newly created containers by comparing its id to the one return when we created it at the previous question.
+question:The name is "ecstatic_antonelli".
+command:docker ps
 
-command:
+command:docker run --name new --detach gaspardlcv/devops_lab:app
 
 ## 2.8
-question:
-output:
+question:docker exec new cat /etc/os-release
+output:"PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
+NAME="Debian GNU/Linux"
+VERSION_ID="9"
+VERSION="9 (stretch)"
+ID=debian
+HOME_URL="https://www.debian.org/"
+SUPPORT_URL="https://www.debian.org/support"
+BUG_REPORT_URL="https://bugs.debian.org/""
 
 ## 3.1
-command:
+command:docker-compose up
 
 ## 3.4
-command:
-command:
+command:docker-compose up --detach
+command:docker-compose logs
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 00000000..7cc04753
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,12 @@
+version: '3'
+services:
+  my-service:
+    ports:
+      - "3000:3000"
+    environment:
+      - MYSQL_HOST=localhost
+      - MYSQL_USER=root
+      - MYSQL_PASSWORD=
+      - MYSQL_DATABSE=project
+      - MYSQL_PORT=3306
+    image: gaspardlcv/devops_lab:app
\ No newline at end of file
diff --git a/lacave.js b/lacave.js
new file mode 100644
index 00000000..2d244059
--- /dev/null
+++ b/lacave.js
@@ -0,0 +1,728 @@
+const express = require('express');
+const mysql = require('mysql');
+const bodyParser = require('body-parser');
+const app = express();
+const dockerhost = process.env.MYSQL_HOST;
+const dockerport = process.env.MYSQL_PORT;
+const dockerdatabase = process.env.MYSQL_DATABASE;
+const dockerlogin = process.env.MYSQL_LOGIN;
+const dockerpassword = process.env.MYSQL_PASSWORD;
+
+app.use(bodyParser.urlencoded({ extended: true }));
+
+var db = mysql.createConnection({
+host: dockerhost,
+user: dockerhost,
+password: dockerpassword,
+database: dockerdatabase,
+port: dockerport
+});
+
+////////////////////////////////////
+//////// START OF FIREWALL /////////
+////////////////////////////////////
+app.use(function(req, res, next) {
+
+  if ("key" in req.query) {
+    var key = req.query["key"];
+    var query = "SELECT * FROM users WHERE apikey='" + key + "'";
+    db.query(query, function(err, result, fields) {
+    if (err) throw err;
+    if (result.length > 0) {
+      next();
+    }
+    else {
+      res.status(403).send("Access denied");
+    }
+    });
+    } else {
+      res.status(403).send("Access denied");
+  }
+});
+
+////////////////////////////////////
+///// routes for animals table /////
+////////////////////////////////////
+
+// localhost:3000/animals/?sort=++breed
+
+app.get('/animals', function(req, res) {
+var query = "SELECT * FROM animals";
+var conditions = ["id", "breed","id_cage","food_per_day","name","birthday","entry_date"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      if (query.indexOf("WHERE") < 0) {
+          query += " WHERE";
+      } else {
+          query += " AND";
+      }
+      query += " " + conditions[index] + "='" +
+      req.query[conditions[index]] + "'";
+  }
+}
+if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+if ("sort" in req.query) {
+  var sort = req.query["sort"].split(",");
+  query += " ORDER BY ";
+  for (var index in sort) {
+      var direction = sort[index].substr(0, 1);
+      var field = sort[index].substr(1);
+      query += field;
+      if (direction == "-")
+      query += " DESC,";
+      else
+      query += " ASC,";
+  }
+  query = query.slice(0, -1);
+}
+if ("limit" in req.query) {
+query += " LIMIT " + req.query["limit"];
+if ("offset" in req.query) {
+query += " OFFSET " + req.query["offset"];
+}
+}
+//res.send(JSON.stringify(query));
+db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+});
+});
+
+app.get('/animals/:id', function(req, res) {
+var id = req.params.id;
+var query = "SELECT * FROM animals where animals.id=" + id;
+if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+app.post('/animals/', function(req, res) {
+  var values =") VALUES('";
+  var query = "INSERT INTO animals (";
+  var conditions = ["id", "breed","id_cage","food_per_day","name","birthday","entry_date"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += conditions[index] + ",";
+          values += req.body[conditions[index]] + "','";
+      }
+  }
+  values = values.slice(0, -2);
+  values += ")"
+  query = query.slice(0,-1);
+  query += values;
+  db.query(query, function(err, result, fields) {
+    if (err) throw err;
+      db.query("SELECT * FROM animals", function(err, result, fields) {
+        if (err) throw err;
+        var response = { "page": "animals", "result": result };
+        res.send(JSON.stringify(response));
+    });
+  });
+});
+app.put('/animals/:id', function(req, res) {
+  var id = req.params.id;
+  var query="update animals set";
+  var conditions = ["breed","id_cage","food_per_day","name","birthday","entry_date"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += " " + conditions[index] + "='" + req.body[conditions[index]] + "',";
+      }
+  }
+  query = query.slice(0, -1);
+  query +=  " where animals.id=" + id;
+  db.query(query , function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.delete('/animals', function(req, res) {
+  var query = "DELETE from animals" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "All the animals have been supressed";
+  res.send(JSON.stringify(response));
+});
+});
+app.delete('/animals/:id', function(req, res) {
+  var id = req.params.id;
+  var query = "Delete from animals where animals.id='" +id+"'" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "The animal indentified whith id="+id+" has been supressed from database";
+  res.send(JSON.stringify(response));
+});
+});
+
+/////////////////////////////////
+///// routes for cage table /////
+/////////////////////////////////
+
+app.get('/cages', function(req, res) {
+var query = "SELECT * FROM cages";
+var conditions = ["id", "name","description","area"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      if (query.indexOf("WHERE") < 0) {
+          query += " WHERE";
+      } else {
+          query += " AND";
+      }
+      query += " " + conditions[index] + "='" +
+      req.query[conditions[index]] + "'";
+  }
+}
+if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+if ("sort" in req.query) {
+  var sort = req.query["sort"].split(",");
+  query += " ORDER BY ";
+  for (var index in sort) {
+      var direction = sort[index].substr(0, 1);
+      var field = sort[index].substr(1);
+      query += field;
+      if (direction == "-")
+      query += " DESC,";
+      else
+      query += " ASC,";
+  }
+  query = query.slice(0, -1);
+  }
+  if ("limit" in req.query) {
+  query += " LIMIT " + req.query["limit"];
+  if ("offset" in req.query) {
+  query += " OFFSET " + req.query["offset"];
+  }
+  }
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.get('/cages/:id', function(req, res) {
+  var id = req.params.id;
+  var query ="SELECT * FROM cages where cages.id=" + id ;
+  if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.post('/cages/', function(req, res) {
+  /*var name = req.body.name;
+  var breed = req.body.breed;
+  var dailyfood = req.body.dailyfood;
+  var birthday = req.body.birthday;
+  var entry = req.body.entry;
+  var cage = req.body.cage;*/
+  var values =") VALUES('";
+  var query = "INSERT INTO cages (";
+  var conditions = ["id", "name","description","area"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += conditions[index] + ",";
+          values += req.body[conditions[index]] + "','";
+      }
+  }
+  values = values.slice(0, -2);
+  values += ")"
+  query = query.slice(0,-1);
+  query += values;
+  //console.log(query);
+  db.query(query, function(err, result, fields) {
+    if (err) throw err;
+      db.query("SELECT * FROM cages ", function(err, result, fields) {
+        if (err) throw err;
+        var response = { "page": "cages", "result": result };
+        res.send(JSON.stringify(response));
+    });
+  });
+});
+app.put('/cages/:id', function(req, res) {
+  var id = req.params.id;
+  var query="update cages set";
+  var conditions = ["description","area","name"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += " " + conditions[index] + "='" + req.body[conditions[index]] + "',";
+      }
+  }
+  query = query.slice(0, -1);
+  query +=  " where cages.id=" + id;
+  db.query(query , function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.delete('/cages', function(req, res) {
+  var query = "DELETE from cages" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "All the cages have been supressed";
+  res.send(JSON.stringify(response));
+});
+});
+app.delete('/cages/:id', function(req, res) {
+  var id = req.params.id;
+  var query = "Delete from cages where cages.id='" +id+"'" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "The cage indentified whith id="+id+" has been supressed from database";
+  res.send(JSON.stringify(response));
+});
+});
+
+/////////////////////////////////
+///// routes for food table /////
+/////////////////////////////////
+
+app.get('/food', function(req, res) {
+  var query = "SELECT * from food";
+  var conditions = ["id", "name","quantity","id_animal"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      if (query.indexOf("WHERE") < 0) {
+          query += " WHERE";
+      } else {
+          query += " AND";
+      }
+      query += " " + conditions[index] + "='" +
+      req.query[conditions[index]] + "'";
+  }
+}
+if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+if ("sort" in req.query) {
+  var sort = req.query["sort"].split(",");
+  query += " ORDER BY ";
+  for (var index in sort) {
+      var direction = sort[index].substr(0, 1);
+      var field = sort[index].substr(1);
+      query += field;
+      if (direction == "-")
+      query += " DESC,";
+      else
+      query += " ASC,";
+  }
+  query = query.slice(0, -1);
+  }
+  if ("limit" in req.query) {
+  query += " LIMIT " + req.query["limit"];
+  if ("offset" in req.query) {
+  query += " OFFSET " + req.query["offset"];
+  }
+  }
+  //console.log(query);
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.get('/food/:id', function(req, res) {
+  var id = req.params.id;
+  var query ="SELECT * FROM food where food.id=" + id ;
+  if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.post('/food/', function(req, res) {
+  /*var name = req.body.name;
+  var breed = req.body.breed;
+  var dailyfood = req.body.dailyfood;
+  var birthday = req.body.birthday;
+  var entry = req.body.entry;
+  var cage = req.body.cage;*/
+  var values =") VALUES('";
+  var query = "INSERT INTO food (";
+  var conditions = ["id", "name","quantity","id_animal"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += conditions[index] + ",";
+          values += req.body[conditions[index]] + "','";
+      }
+  }
+  values = values.slice(0, -2);
+  values += ")"
+  query = query.slice(0,-1);
+  query += values;
+  db.query(query, function(err, result, fields) {
+    if (err) throw err;
+      db.query("SELECT * FROM food ", function(err, result, fields) {
+        if (err) throw err;
+        var response = { "page": "food", "result": result };
+        res.send(JSON.stringify(response));
+    });
+  });
+});
+app.put('/food/:id', function(req, res) {
+  var id = req.params.id;
+    var query="update food set";
+  var conditions = ["quantity","id_animal","name"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += " " + conditions[index] + "='" + req.body[conditions[index]] + "',";
+      }
+  }
+  query = query.slice(0, -1);
+  query +=  " where food.id=" + id;
+  db.query(query , function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.delete('/food', function(req, res) {
+  var query = "DELETE from food" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "All the food have been supressed";
+  res.send(JSON.stringify(response));
+});
+});
+app.delete('/food/:id', function(req, res) {
+  var id = req.params.id;
+  var query = "Delete from food where food.id='" +id+"'" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "The food indentified whith id="+id+" has been supressed from database";
+  res.send(JSON.stringify(response));
+});
+});
+
+//////////////////////////////////
+///// routes for staff table /////
+//////////////////////////////////
+
+app.get('/staff', function(req, res) {
+  var query = "SELECT * from staff"
+  var conditions = ["id", "firstname","lastname","wage"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      if (query.indexOf("WHERE") < 0) {
+          query += " WHERE";
+      } else {
+          query += " AND";
+      }
+      query += " " + conditions[index] + "='" +
+      req.query[conditions[index]] + "'";
+  }
+}
+if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+if ("sort" in req.query) {
+  var sort = req.query["sort"].split(",");
+  query += " ORDER BY ";
+  for (var index in sort) {
+      var direction = sort[index].substr(0, 1);
+      var field = sort[index].substr(1);
+      query += field;
+      if (direction == "-")
+      query += " DESC,";
+      else
+      query += " ASC,";
+  }
+  query = query.slice(0, -1);
+  }
+  if ("limit" in req.query) {
+  query += " LIMIT " + req.query["limit"];
+  if ("offset" in req.query) {
+  query += " OFFSET " + req.query["offset"];
+  }
+  }
+  //console.log(query);
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.get('/staff/:id', function(req, res) {
+  var id = req.params.id;
+  var query ="SELECT * FROM staff where staff.id=" + id ;
+  if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.post('/staff/', function(req, res) {
+  /*var name = req.body.name;
+  var breed = req.body.breed;
+  var dailyfood = req.body.dailyfood;
+  var birthday = req.body.birthday;
+  var entry = req.body.entry;
+  var cage = req.body.cage;*/
+  var values =") VALUES('";
+  var query = "INSERT INTO staff (";
+  var conditions = ["id", "lastname","firstname","wage"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += conditions[index] + ",";
+          values += req.body[conditions[index]] + "','";
+      }
+  }
+  values = values.slice(0, -2);
+  values += ")"
+  query = query.slice(0,-1);
+  query += values;
+  db.query(query, function(err, result, fields) {
+    if (err) throw err;
+      db.query("SELECT * FROM staff ", function(err, result, fields) {
+        if (err) throw err;
+        var response = { "page": "staff", "result": result };
+        res.send(JSON.stringify(response));
+    });
+  });
+});
+app.put('/staff/:id', function(req, res) {
+  var id = req.params.id;
+  var query="update staff set";
+  var conditions = ["lastname","firstname","wage"];
+  for (var index in conditions) {
+      if (conditions[index] in req.body) {
+          query += " " + conditions[index] + "='" + req.body[conditions[index]] + "',";
+      }
+  }
+  query = query.slice(0, -1);
+  query +=  " where staff.id=" + id;
+  db.query(query , function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+app.delete('/staff', function(req, res) {
+  var query = "DELETE from staff" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "All the staff have been supressed";
+  res.send(JSON.stringify(response));
+});
+});
+app.delete('/staff/:id', function(req, res) {
+  var id = req.params.id;
+  var query = "Delete from staff where staff.id='" +id+"'" ;
+  db.query(query, function(err, result, fields) {
+  if (err) throw err;
+  var response= "The staff indentified whith id="+id+" has been supressed from database";
+  res.send(JSON.stringify(response));
+});
+});
+
+/////////////////////////////////////
+///// routes for remaining food /////
+/////////////////////////////////////
+
+app.get('/food-stats', function(req, res) {
+  db.query("SELECT animals.id,(case when animals.food_per_day =0 then 0 else (food.quantity/animals.food_per_day)end) as days_left FROM food join animals on animals.id=food.id_animal", function(err, result, fields) {
+  if (err) throw err;
+  res.send(JSON.stringify(result));
+  });
+});
+
+/////////////////////////////////////
+/////       relationships       /////
+/////////////////////////////////////
+
+app.get('/animals/:id/cages', function(req, res) {
+var id = req.params.id;
+var query = "SELECT cages.* FROM cages JOIN animals ON cages.id = animals.id_cage where animals.id=" + id + " ";
+if ("fields" in req.query) {
+query = query.replace("cages.*", "cages." + req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","birthday","entry_date","description","area"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+  if ("limit" in req.query) {
+  query += " LIMIT " + req.query["limit"];
+  if ("offset" in req.query) {
+  query += " OFFSET " + req.query["offset"];
+  }
+  }
+console.log(query);
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+app.get('/animals/:id/cages/:id_cage', function(req, res) {
+var id = req.params.id;
+var id_cage = req.params.id_cage;
+var query = "SELECT cages.* FROM cages JOIN animals ON cages.id = animals.id_cage where animals.id=" + id + " AND cages.id=" +id_cage +" ";
+if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","birthday","entry_date","description","area"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+//console.log(query);
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+
+app.get('/cages/:id/animals', function(req, res) {
+var id = req.params.id;
+var query = "SELECT animals.* FROM cages JOIN animals ON cages.id = animals.id_cage where cages.id=" + id + " ";
+if ("fields" in req.query) {
+query = query.replace("animals.*", "animals." + req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","birthday","entry_date","description","area"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+  if ("limit" in req.query) {
+  query += " LIMIT " + req.query["limit"];
+  if ("offset" in req.query) {
+  query += " OFFSET " + req.query["offset"];
+  }
+  }
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+app.get('/cages/:id/animals/:id_animal', function(req, res) {
+var id = req.params.id;
+var id_animal = req.params.id_animal;
+var query = "SELECT animals.* FROM cages JOIN animals ON cages.id = animals.id_cage where cages.id=" + id + " AND animals.id=" +id_animal +" ";
+if ("fields" in req.query) {
+query = query.replace("animals.*", "animals." + req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","birthday","entry_date","description","area"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+//console.log(query);
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+
+app.get('/food/:id/animals', function(req, res) {
+var id = req.params.id;
+var query = "SELECT animals.* FROM food JOIN animals ON food.id_animal = animals.id where food.id=" + id + " ";
+if ("fields" in req.query) {
+query = query.replace("animals.*", "animals." + req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","quantity","id_animal"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+  if ("limit" in req.query) {
+  query += " LIMIT " + req.query["limit"];
+  if ("offset" in req.query) {
+  query += " OFFSET " + req.query["offset"];
+  }
+  }
+console.log(query);
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+app.get('/food/:id/animals/:id_animal', function(req, res) {
+var id = req.params.id;
+var id_animal = req.params.id_animal;
+var query = "SELECT animals.* FROM food JOIN animals ON food.id_animal = animals.id where food.id=" + id + "  AND animals.id=" +id_animal +" ";
+if ("fields" in req.query) {
+query = query.replace("animals.*", "animals." + req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","quantity","id_animal"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+//console.log(query);
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+
+app.get('/animals/:id/food', function(req, res) {
+var id = req.params.id;
+var query = "SELECT food.* FROM food JOIN animals ON food.id_animal = animals.id where animals.id=" + id + " ";
+if ("fields" in req.query) {
+query = query.replace("food.*", "food." + req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","quantity","id_animal"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+  if ("limit" in req.query) {
+  query += " LIMIT " + req.query["limit"];
+  if ("offset" in req.query) {
+  query += " OFFSET " + req.query["offset"];
+  }
+  }
+console.log(query);
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+app.get('/animals/:id/food/:id_food', function(req, res) {
+var id = req.params.id;
+var id_food = req.params.id_food;
+var query = "SELECT food.* FROM food JOIN animals ON food.id_animal = animals.id where animals.id=" + id + "  AND food.id=" +id_food +" ";
+if ("fields" in req.query) {
+query = query.replace("food.*", "food." + req.query["fields"]);
+}
+var conditions = ["id", "breed","id_cage","food_per_day","name","quantity","id_animal"];
+for (var index in conditions) {
+  if (conditions[index] in req.query) {
+      query += " AND";
+      query += " " + conditions[index] + "='" + req.query[conditions[index]] + "'";
+  }
+}
+//console.log(query);
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+
+/////////////////////////
+///// END OF ROUTES /////
+/////////////////////////
+
+app.listen(3000, function() {
+console.log('Project zoo listening on port 3000!');
+});