diff --git a/app.js b/app.js
index 40fd9bc167f..f8a77e9817f 100644
--- a/app.js
+++ b/app.js
@@ -1,25 +1,26 @@
-const express = require('express')
-const logger = require('morgan')
-const cors = require('cors')
+const express = require("express");
+const logger = require("morgan");
+const cors = require("cors");
 
-const contactsRouter = require('./routes/api/contacts')
+const contactsRouter = require("./routes/api/contactsRouter");
 
-const app = express()
+const app = express();
 
-const formatsLogger = app.get('env') === 'development' ? 'dev' : 'short'
+const formatsLogger = app.get("env") === "development" ? "dev" : "short";
 
-app.use(logger(formatsLogger))
-app.use(cors())
-app.use(express.json())
+app.use(logger(formatsLogger));
+app.use(cors());
+app.use(express.json());
 
-app.use('/api/contacts', contactsRouter)
+app.use("/api/contacts", contactsRouter);
 
 app.use((req, res) => {
-  res.status(404).json({ message: 'Not found' })
-})
+  res.status(404).json({ message: "Not found" });
+});
 
 app.use((err, req, res, next) => {
-  res.status(500).json({ message: err.message })
-})
+  const { status = 500, message = "server error" } = err;
+  res.status(status).json({ message });
+});
 
-module.exports = app
+module.exports = app;
diff --git a/controllers/contacts/add.js b/controllers/contacts/add.js
new file mode 100644
index 00000000000..a1337f5af91
--- /dev/null
+++ b/controllers/contacts/add.js
@@ -0,0 +1,15 @@
+const contactOperations = require("../../models/contacts");
+
+const add = async (req, res) => {
+  const { body } = req;
+  const addedContact = await contactOperations.addContact(body);
+  res.status(201).json({
+    status: "success",
+    code: 201,
+    data: {
+      result: addedContact,
+    },
+  });
+};
+
+module.exports = add;
diff --git a/controllers/contacts/getAll.js b/controllers/contacts/getAll.js
new file mode 100644
index 00000000000..ea50d842732
--- /dev/null
+++ b/controllers/contacts/getAll.js
@@ -0,0 +1,14 @@
+const contactOperations = require("../../models/contacts");
+
+const getAll = async (req, res) => {
+  const allContact = await contactOperations.listContacts();
+  res.json({
+    status: "success",
+    code: 200,
+    data: {
+      result: allContact,
+    },
+  });
+};
+
+module.exports = getAll;
diff --git a/controllers/contacts/getById.js b/controllers/contacts/getById.js
new file mode 100644
index 00000000000..8d5b9dd9aa6
--- /dev/null
+++ b/controllers/contacts/getById.js
@@ -0,0 +1,20 @@
+const contactOperations = require("../../models/contacts");
+
+const getById = async (req, res) => {
+  const { contactId } = req.params;
+  const contact = await contactOperations.getContactById(contactId);
+  if (!contact) {
+    const error = new Error(`contact whith id = ${contactId} not found`);
+    error.status = 404;
+    throw error;
+  }
+  res.json({
+    status: "success",
+    code: 200,
+    data: {
+      result: contact,
+    },
+  });
+};
+
+module.exports = getById;
diff --git a/controllers/contacts/index.js b/controllers/contacts/index.js
new file mode 100644
index 00000000000..5cfca5a8182
--- /dev/null
+++ b/controllers/contacts/index.js
@@ -0,0 +1,13 @@
+const getAll = require("./getAll");
+const getById = require("./getById");
+const add = require("./add");
+const remove = require("./remove");
+const update = require("./update");
+
+module.exports = {
+  getAll,
+  getById,
+  add,
+  remove,
+  update,
+};
diff --git a/controllers/contacts/remove.js b/controllers/contacts/remove.js
new file mode 100644
index 00000000000..c8f119eb3bc
--- /dev/null
+++ b/controllers/contacts/remove.js
@@ -0,0 +1,20 @@
+const contactOperations = require("../../models/contacts");
+
+const remove = async (req, res) => {
+  const { contactId } = req.params;
+  const contactToDelete = await contactOperations.removeContact(contactId);
+  if (!contactToDelete) {
+    const error = new Error(`contact whith id = ${contactId} not found`);
+    error.status = 404;
+    throw error;
+  }
+  res.json({
+    status: "success",
+    code: 200,
+    data: {
+      result: contactToDelete,
+    },
+  });
+};
+
+module.exports = remove;
diff --git a/controllers/contacts/update.js b/controllers/contacts/update.js
new file mode 100644
index 00000000000..25b11904982
--- /dev/null
+++ b/controllers/contacts/update.js
@@ -0,0 +1,24 @@
+const contactOperations = require("../../models/contacts");
+
+const update = async (req, res) => {
+  const { body } = req;
+  const { contactId } = req.params;
+  const contactToUpdate = await contactOperations.updateContact(
+    contactId,
+    body
+  );
+  if (!contactToUpdate) {
+    const error = new Error(`contact whith id = ${contactId} not found`);
+    error.status = 404;
+    throw error;
+  }
+  res.json({
+    status: "success",
+    code: 200,
+    data: {
+      result: contactToUpdate,
+    },
+  });
+};
+
+module.exports = update;
diff --git a/controllers/index.js b/controllers/index.js
new file mode 100644
index 00000000000..69c5833f507
--- /dev/null
+++ b/controllers/index.js
@@ -0,0 +1,5 @@
+const contactsControllers = require("./contacts");
+
+module.exports = {
+  contactsControllers,
+};
diff --git a/middlewars/cntrlWrap.js b/middlewars/cntrlWrap.js
new file mode 100644
index 00000000000..5547606f5f7
--- /dev/null
+++ b/middlewars/cntrlWrap.js
@@ -0,0 +1,10 @@
+const cntrlWrap = (cntrl) => {
+  return async (req, res, next) => {
+    try {
+      await cntrl(req, res, next);
+    } catch (error) {
+      next(error);
+    }
+  };
+};
+module.exports = cntrlWrap;
diff --git a/middlewars/index.js b/middlewars/index.js
new file mode 100644
index 00000000000..26ba7812bae
--- /dev/null
+++ b/middlewars/index.js
@@ -0,0 +1,7 @@
+const validation = require("./validation");
+const cntrlWrap = require("./cntrlWrap");
+
+module.exports = {
+  validation,
+  cntrlWrap,
+};
diff --git a/middlewars/validation.js b/middlewars/validation.js
new file mode 100644
index 00000000000..7863b6c5c69
--- /dev/null
+++ b/middlewars/validation.js
@@ -0,0 +1,12 @@
+const validation = (schema) => {
+  return (req, res, next) => {
+    const { body } = req;
+    const { error } = schema.validate(body);
+    if (error) {
+      error.status = 400;
+      next(error);
+    }
+    next();
+  };
+};
+module.exports = validation;
diff --git a/models/contacts.js b/models/contacts.js
index 409d11c7c09..1477cbb0666 100644
--- a/models/contacts.js
+++ b/models/contacts.js
@@ -1,14 +1,53 @@
-// const fs = require('fs/promises')
+const fs = require("fs/promises");
+const path = require("path");
+const { v4 } = require("uuid");
 
-const listContacts = async () => {}
+const contactsPath = path.join(__dirname, "/contacts.json");
 
-const getContactById = async (contactId) => {}
+const listContacts = async () => {
+  const data = await fs.readFile(contactsPath);
+  const contacts = await JSON.parse(data);
+  return contacts;
+};
 
-const removeContact = async (contactId) => {}
+const getContactById = async (contactId) => {
+  const data = await listContacts();
+  const contact = data.find((item) => item.id === contactId);
+  if (!contact) {
+    return null;
+  }
+  return contact;
+};
 
-const addContact = async (body) => {}
+const removeContact = async (contactId) => {
+  const data = await listContacts();
+  const idx = data.findIndex((item) => item.id === contactId);
+  if (idx === -1) {
+    return null;
+  }
+  const updatedContacts = data.filter((_, index) => index !== idx);
+  await fs.writeFile(contactsPath, JSON.stringify(updatedContacts));
+  return data[idx];
+};
 
-const updateContact = async (contactId, body) => {}
+const addContact = async (body) => {
+  const result = await listContacts();
+  const addedContact = { ...body, id: v4() };
+  result.push(addedContact);
+  await fs.writeFile(contactsPath, JSON.stringify(result));
+  return addedContact;
+};
+
+const updateContact = async (contactId, body) => {
+  const result = await listContacts();
+  const idx = result.findIndex((item) => item.id === contactId);
+  if (idx === -1) {
+    return null;
+  }
+  result[idx] = { ...body, id: contactId };
+  await fs.writeFile(contactsPath, JSON.stringify(result));
+  return result[idx];
+};
 
 module.exports = {
   listContacts,
@@ -16,4 +55,4 @@ module.exports = {
   removeContact,
   addContact,
   updateContact,
-}
+};
diff --git a/models/contacts.json b/models/contacts.json
index 3f22d286b9c..d7097074687 100644
--- a/models/contacts.json
+++ b/models/contacts.json
@@ -1,9 +1,9 @@
 [
   {
-    "id": "1",
-    "name": "Allen Raymond",
-    "email": "nulla.ante@vestibul.co.uk",
-    "phone": "(992) 914-3792"
+    "name": "Allen Limo",
+    "email": "Allen.ante@vestibul.co.uk",
+    "phone": "(992) 914-3792",
+    "id": "1"
   },
   {
     "id": "2",
diff --git a/package-lock.json b/package-lock.json
index e6d047044e5..45aa387217d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,17 +1,19 @@
 {
-  "name": "template",
+  "name": "nodejs-contacts-hw2",
   "version": "0.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "name": "template",
+      "name": "nodejs-contacts-hw2",
       "version": "0.0.0",
       "dependencies": {
         "cors": "2.8.5",
         "cross-env": "7.0.3",
         "express": "4.17.1",
-        "morgan": "1.10.0"
+        "joi": "^17.7.0",
+        "morgan": "1.10.0",
+        "uuid": "^9.0.0"
       },
       "devDependencies": {
         "eslint": "7.19.0",
@@ -141,6 +143,37 @@
         "node": "^10.12.0 || >=12.0.0"
       }
     },
+    "node_modules/@hapi/hoek": {
+      "version": "9.3.0",
+      "resolved": "https://registry.npmjs.org/@hapi/hoek/-/hoek-9.3.0.tgz",
+      "integrity": "sha512-/c6rf4UJlmHlC9b5BaNvzAcFv7HZ2QHaV0D4/HNlBdvFnvQq8RI4kYdhyPCl7Xj+oWvTWQ8ujhqS53LIgAe6KQ=="
+    },
+    "node_modules/@hapi/topo": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@hapi/topo/-/topo-5.1.0.tgz",
+      "integrity": "sha512-foQZKJig7Ob0BMAYBfcJk8d77QtOe7Wo4ox7ff1lQYoNNAb6jwcY1ncdoy2e9wQZzvNy7ODZCYJkK8kzmcAnAg==",
+      "dependencies": {
+        "@hapi/hoek": "^9.0.0"
+      }
+    },
+    "node_modules/@sideway/address": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/@sideway/address/-/address-4.1.4.tgz",
+      "integrity": "sha512-7vwq+rOHVWjyXxVlR76Agnvhy8I9rpzjosTESvmhNeXOXdZZB15Fl+TI9x1SiHZH5Jv2wTGduSxFDIaq0m3DUw==",
+      "dependencies": {
+        "@hapi/hoek": "^9.0.0"
+      }
+    },
+    "node_modules/@sideway/formula": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/@sideway/formula/-/formula-3.0.1.tgz",
+      "integrity": "sha512-/poHZJJVjx3L+zVD6g9KgHfYnb443oi7wLu/XKojDviHy6HOEOA6z1Trk5aR1dGcmPenJEgb2sK2I80LeS3MIg=="
+    },
+    "node_modules/@sideway/pinpoint": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@sideway/pinpoint/-/pinpoint-2.0.0.tgz",
+      "integrity": "sha512-RNiOoTPkptFtSVzQevY/yWtZwf/RxyVnPy/OcA9HBM3MlGDnBEYL5B41H0MTn0Uec8Hi+2qUtTfG2WWZBmMejQ=="
+    },
     "node_modules/@sindresorhus/is": {
       "version": "0.14.0",
       "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
@@ -2166,6 +2199,18 @@
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
       "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
     },
+    "node_modules/joi": {
+      "version": "17.7.0",
+      "resolved": "https://registry.npmjs.org/joi/-/joi-17.7.0.tgz",
+      "integrity": "sha512-1/ugc8djfn93rTE3WRKdCzGGt/EtiYKxITMO4Wiv6q5JL1gl9ePt4kBsl1S499nbosspfctIQTpYIhSmHA3WAg==",
+      "dependencies": {
+        "@hapi/hoek": "^9.0.0",
+        "@hapi/topo": "^5.0.0",
+        "@sideway/address": "^4.1.3",
+        "@sideway/formula": "^3.0.0",
+        "@sideway/pinpoint": "^2.0.0"
+      }
+    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -3544,6 +3589,14 @@
         "node": ">= 0.4.0"
       }
     },
+    "node_modules/uuid": {
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.0.tgz",
+      "integrity": "sha512-MXcSTerfPa4uqyzStbRoTgt5XIe3x5+42+q1sDuy3R5MDk66URdLMOZe5aPX/SQd+kuYAh0FdP/pO28IkQyTeg==",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/v8-compile-cache": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.3.0.tgz",
@@ -3757,6 +3810,37 @@
         "strip-json-comments": "^3.1.1"
       }
     },
+    "@hapi/hoek": {
+      "version": "9.3.0",
+      "resolved": "https://registry.npmjs.org/@hapi/hoek/-/hoek-9.3.0.tgz",
+      "integrity": "sha512-/c6rf4UJlmHlC9b5BaNvzAcFv7HZ2QHaV0D4/HNlBdvFnvQq8RI4kYdhyPCl7Xj+oWvTWQ8ujhqS53LIgAe6KQ=="
+    },
+    "@hapi/topo": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@hapi/topo/-/topo-5.1.0.tgz",
+      "integrity": "sha512-foQZKJig7Ob0BMAYBfcJk8d77QtOe7Wo4ox7ff1lQYoNNAb6jwcY1ncdoy2e9wQZzvNy7ODZCYJkK8kzmcAnAg==",
+      "requires": {
+        "@hapi/hoek": "^9.0.0"
+      }
+    },
+    "@sideway/address": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/@sideway/address/-/address-4.1.4.tgz",
+      "integrity": "sha512-7vwq+rOHVWjyXxVlR76Agnvhy8I9rpzjosTESvmhNeXOXdZZB15Fl+TI9x1SiHZH5Jv2wTGduSxFDIaq0m3DUw==",
+      "requires": {
+        "@hapi/hoek": "^9.0.0"
+      }
+    },
+    "@sideway/formula": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/@sideway/formula/-/formula-3.0.1.tgz",
+      "integrity": "sha512-/poHZJJVjx3L+zVD6g9KgHfYnb443oi7wLu/XKojDviHy6HOEOA6z1Trk5aR1dGcmPenJEgb2sK2I80LeS3MIg=="
+    },
+    "@sideway/pinpoint": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@sideway/pinpoint/-/pinpoint-2.0.0.tgz",
+      "integrity": "sha512-RNiOoTPkptFtSVzQevY/yWtZwf/RxyVnPy/OcA9HBM3MlGDnBEYL5B41H0MTn0Uec8Hi+2qUtTfG2WWZBmMejQ=="
+    },
     "@sindresorhus/is": {
       "version": "0.14.0",
       "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
@@ -5269,6 +5353,18 @@
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
       "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
     },
+    "joi": {
+      "version": "17.7.0",
+      "resolved": "https://registry.npmjs.org/joi/-/joi-17.7.0.tgz",
+      "integrity": "sha512-1/ugc8djfn93rTE3WRKdCzGGt/EtiYKxITMO4Wiv6q5JL1gl9ePt4kBsl1S499nbosspfctIQTpYIhSmHA3WAg==",
+      "requires": {
+        "@hapi/hoek": "^9.0.0",
+        "@hapi/topo": "^5.0.0",
+        "@sideway/address": "^4.1.3",
+        "@sideway/formula": "^3.0.0",
+        "@sideway/pinpoint": "^2.0.0"
+      }
+    },
     "js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -6326,6 +6422,11 @@
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
       "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
     },
+    "uuid": {
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.0.tgz",
+      "integrity": "sha512-MXcSTerfPa4uqyzStbRoTgt5XIe3x5+42+q1sDuy3R5MDk66URdLMOZe5aPX/SQd+kuYAh0FdP/pO28IkQyTeg=="
+    },
     "v8-compile-cache": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.3.0.tgz",
diff --git a/package.json b/package.json
index 5045e827160..4f7a28e77ee 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "template",
+  "name": "nodejs-contacts-hw2",
   "version": "0.0.0",
   "private": true,
   "scripts": {
@@ -12,7 +12,9 @@
     "cors": "2.8.5",
     "cross-env": "7.0.3",
     "express": "4.17.1",
-    "morgan": "1.10.0"
+    "joi": "^17.7.0",
+    "morgan": "1.10.0",
+    "uuid": "^9.0.0"
   },
   "devDependencies": {
     "eslint": "7.19.0",
diff --git a/routes/api/contactsRouter.js b/routes/api/contactsRouter.js
new file mode 100644
index 00000000000..17692668d47
--- /dev/null
+++ b/routes/api/contactsRouter.js
@@ -0,0 +1,23 @@
+const express = require("express");
+
+const { contactsControllers: cntr } = require("../../controllers");
+const { validation, cntrlWrap } = require("../../middlewars");
+const { contactsSchema } = require("../../schemas");
+
+const contactsRouter = express.Router();
+
+contactsRouter.get("/", cntrlWrap(cntr.getAll));
+
+contactsRouter.get("/:contactId", cntrlWrap(cntr.getById));
+
+contactsRouter.post("/", validation(contactsSchema), cntrlWrap(cntr.add));
+
+contactsRouter.delete("/:contactId", cntrlWrap(cntr.remove));
+
+contactsRouter.put(
+  "/:contactId",
+  validation(contactsSchema),
+  cntrlWrap(cntr.update)
+);
+
+module.exports = contactsRouter;
diff --git a/schemas/contacts.js b/schemas/contacts.js
new file mode 100644
index 00000000000..05183adf09b
--- /dev/null
+++ b/schemas/contacts.js
@@ -0,0 +1,9 @@
+const Joi = require("joi");
+
+const schema = Joi.object({
+  name: Joi.string().required(),
+  email: Joi.string().email().required(),
+  phone: Joi.string().required(),
+});
+
+module.exports = schema;
\ No newline at end of file
diff --git a/schemas/index.js b/schemas/index.js
new file mode 100644
index 00000000000..67413fb75eb
--- /dev/null
+++ b/schemas/index.js
@@ -0,0 +1,5 @@
+const contactsSchema = require("./contacts");
+
+module.exports = {
+  contactsSchema,
+};
diff --git a/server.js b/server.js
index db330824656..231339bb8f0 100644
--- a/server.js
+++ b/server.js
@@ -1,5 +1,7 @@
-const app = require('./app')
+const app = require("./app");
 
-app.listen(3000, () => {
-  console.log("Server running. Use our API on port: 3000")
-})
+const { PORT = 3000 } = process.env;
+
+app.listen(PORT, () => {
+  console.log("Server running. Use our API on port: 3000");
+});