diff --git a/app.js b/app.js
index 40fd9bc167f..032348640e8 100644
--- a/app.js
+++ b/app.js
@@ -1,25 +1,55 @@
-const express = require('express')
-const logger = require('morgan')
-const cors = require('cors')
-
-const contactsRouter = require('./routes/api/contacts')
-
-const app = express()
-
-const formatsLogger = app.get('env') === 'development' ? 'dev' : 'short'
-
-app.use(logger(formatsLogger))
-app.use(cors())
-app.use(express.json())
-
-app.use('/api/contacts', contactsRouter)
-
+// 1️⃣ Załaduj zmienne środowiskowe z pliku .env
+require('dotenv').config();
+
+const express = require('express');
+const logger = require('morgan');
+const cors = require('cors');
+const mongoose = require('mongoose');
+
+const contactsRouter = require('./routes/api/contacts');
+
+const app = express();
+
+// 2️⃣ Połączenie z MongoDB
+const DB_HOST = process.env.MONGO_URI;
+
+if (!DB_HOST) {
+  console.error('❌ Brak zmiennej środowiskowej MONGO_URI w pliku .env');
+  process.exit(1);
+}
+
+mongoose.connect(DB_HOST)
+  .then(() => {
+    console.log('✅ Database connection successful');
+
+    // 3️⃣ Uruchomienie serwera po połączeniu z MongoDB
+    const PORT = process.env.PORT || 3001; // Użyj zmiennej środowiskowej lub domyślnie port 3001
+    app.listen(PORT, () => {
+      console.log(`🚀 Server running on http://localhost:${PORT}`);
+    });
+  })
+  .catch(error => {
+    console.error('❌ Database connection error:', error.message);
+    process.exit(1);
+  });
+
+// 4️⃣ Middleware
+const formatsLogger = app.get('env') === 'development' ? 'dev' : 'short';
+app.use(logger(formatsLogger));
+app.use(cors());
+app.use(express.json());
+
+// 5️⃣ Routes
+app.use('/api/contacts', contactsRouter);
+
+// 6️⃣ Obsługa błędów
 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 })
-})
+  console.error('❌ Internal server error:', err); // Dodano logowanie błędu
+  res.status(500).json({ message: err.message });
+});
 
-module.exports = app
+module.exports = app;
diff --git a/controllers/contacts.js b/controllers/contacts.js
new file mode 100644
index 00000000000..20235b5a149
--- /dev/null
+++ b/controllers/contacts.js
@@ -0,0 +1,52 @@
+const Contact = require('../models/contacts'); //  Poprawne
+
+
+const getAllContacts = async (req, res) => {
+  const contacts = await Contact.find();
+  res.json(contacts);
+};
+
+const getContactById = async (req, res) => {
+  const { contactId } = req.params;
+  const contact = await Contact.findById(contactId);
+  if (!contact) {
+    return res.status(404).json({ message: 'Not found' });
+  }
+  res.json(contact);
+};
+
+const addContact = async (req, res) => {
+  const newContact = await Contact.create(req.body);
+  res.status(201).json(newContact);
+};
+
+const updateContact = async (req, res) => {
+  const { contactId } = req.params;
+  const updatedContact = await Contact.findByIdAndUpdate(contactId, req.body, { new: true });
+  if (!updatedContact) {
+    return res.status(404).json({ message: 'Not found' });
+  }
+  res.json(updatedContact);
+};
+
+const deleteContact = async (req, res) => {
+  const { contactId } = req.params;
+  const deletedContact = await Contact.findByIdAndDelete(contactId);
+  if (!deletedContact) {
+    return res.status(404).json({ message: 'Not found' });
+  }
+  res.json({ message: 'Contact deleted' });
+};
+
+const updateStatusContact = async (contactId, body) => {
+  return await Contact.findByIdAndUpdate(contactId, body, { new: true });
+};
+
+module.exports = {
+  getAllContacts,
+  getContactById,
+  addContact,
+  updateContact,
+  deleteContact,
+  updateStatusContact,
+};
diff --git a/models/contacts.js b/models/contacts.js
index 409d11c7c09..b68342772e0 100644
--- a/models/contacts.js
+++ b/models/contacts.js
@@ -1,19 +1,22 @@
-// const fs = require('fs/promises')
+const { Schema, model } = require('mongoose');
 
-const listContacts = async () => {}
+const contactSchema = new Schema({
+  name: {
+    type: String,
+    required: [true, 'Set name for contact'],
+  },
+  email: {
+    type: String,
+  },
+  phone: {
+    type: String,
+  },
+  favorite: {
+    type: Boolean,
+    default: false,
+  },
+});
 
-const getContactById = async (contactId) => {}
+const Contact = model('Contact', contactSchema);
 
-const removeContact = async (contactId) => {}
-
-const addContact = async (body) => {}
-
-const updateContact = async (contactId, body) => {}
-
-module.exports = {
-  listContacts,
-  getContactById,
-  removeContact,
-  addContact,
-  updateContact,
-}
+module.exports = Contact;
diff --git a/package-lock.json b/package-lock.json
index e6d047044e5..372cc1530d3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,9 @@
       "dependencies": {
         "cors": "2.8.5",
         "cross-env": "7.0.3",
+        "dotenv": "^16.4.7",
         "express": "4.17.1",
+        "mongoose": "^8.10.0",
         "morgan": "1.10.0"
       },
       "devDependencies": {
@@ -141,6 +143,15 @@
         "node": "^10.12.0 || >=12.0.0"
       }
     },
+    "node_modules/@mongodb-js/saslprep": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@mongodb-js/saslprep/-/saslprep-1.2.0.tgz",
+      "integrity": "sha512-+ywrb0AqkfaYuhHs6LxKWgqbh3I72EpEgESCw37o+9qPx9WTCkgDm2B+eMrwehGtHBWHFU4GXvnSCNiFhhausg==",
+      "license": "MIT",
+      "dependencies": {
+        "sparse-bitfield": "^3.0.3"
+      }
+    },
     "node_modules/@sindresorhus/is": {
       "version": "0.14.0",
       "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
@@ -168,6 +179,21 @@
       "integrity": "sha1-7ihweulOEdK4J7y+UnC86n8+ce4=",
       "dev": true
     },
+    "node_modules/@types/webidl-conversions": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/@types/webidl-conversions/-/webidl-conversions-7.0.3.tgz",
+      "integrity": "sha512-CiJJvcRtIgzadHCYXw7dqEnMNRjhGZlYK05Mj9OyktqV8uVT8fD2BFOB7S1uwBE3Kj2Z+4UyPmFw/Ixgw/LAlA==",
+      "license": "MIT"
+    },
+    "node_modules/@types/whatwg-url": {
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@types/whatwg-url/-/whatwg-url-11.0.5.tgz",
+      "integrity": "sha512-coYR071JRaHa+xoEvvYqvnIHaVqaYrLPbsufM9BF63HkwI5Lgmy2QR8Q5K/lYDYo5AK82wOvSOS0UsLTpTG7uQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/webidl-conversions": "*"
+      }
+    },
     "node_modules/abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -452,6 +478,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/bson": {
+      "version": "6.10.2",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-6.10.2.tgz",
+      "integrity": "sha512-5afhLTjqDSA3akH56E+/2J6kTDuSIlBxyXPdQslj9hcIgOUE378xdOfZvC/9q3LifJNI6KR/juZ+d0NRNYBwXg==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=16.20.1"
+      }
+    },
     "node_modules/bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -728,7 +763,6 @@
       "version": "4.3.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
       "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
-      "dev": true,
       "dependencies": {
         "ms": "2.1.2"
       },
@@ -823,6 +857,18 @@
         "node": ">=8"
       }
     },
+    "node_modules/dotenv": {
+      "version": "16.4.7",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.7.tgz",
+      "integrity": "sha512-47qPchRCykZC03FhkYAhrvwU4xDBFIj1QPqaarj6mdM/hgUzfPHcpkHJOn3mJAufFeeAxAzeGsr5X0M4k6fLZQ==",
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://dotenvx.com"
+      }
+    },
     "node_modules/duplexer3": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer3/-/duplexer3-0.1.4.tgz",
@@ -2215,6 +2261,15 @@
         "json5": "lib/cli.js"
       }
     },
+    "node_modules/kareem": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/kareem/-/kareem-2.6.3.tgz",
+      "integrity": "sha512-C3iHfuGUXK2u8/ipq9LfjFfXFxAZMQJJq7vLS45r3D9Y2xQ/m4S8zaR4zMLFWh9AsNPXmcFfUDhTEO8UIC/V6Q==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
     "node_modules/keyv": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/keyv/-/keyv-3.1.0.tgz",
@@ -2327,6 +2382,12 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/memory-pager": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz",
+      "integrity": "sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==",
+      "license": "MIT"
+    },
     "node_modules/merge-descriptors": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
@@ -2397,6 +2458,90 @@
       "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
+    "node_modules/mongodb": {
+      "version": "6.13.0",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-6.13.0.tgz",
+      "integrity": "sha512-KeESYR5TEaFxOuwRqkOm3XOsMqCSkdeDMjaW5u2nuKfX7rqaofp7JQGoi7sVqQcNJTKuveNbzZtWMstb8ABP6Q==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@mongodb-js/saslprep": "^1.1.9",
+        "bson": "^6.10.1",
+        "mongodb-connection-string-url": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=16.20.1"
+      },
+      "peerDependencies": {
+        "@aws-sdk/credential-providers": "^3.188.0",
+        "@mongodb-js/zstd": "^1.1.0 || ^2.0.0",
+        "gcp-metadata": "^5.2.0",
+        "kerberos": "^2.0.1",
+        "mongodb-client-encryption": ">=6.0.0 <7",
+        "snappy": "^7.2.2",
+        "socks": "^2.7.1"
+      },
+      "peerDependenciesMeta": {
+        "@aws-sdk/credential-providers": {
+          "optional": true
+        },
+        "@mongodb-js/zstd": {
+          "optional": true
+        },
+        "gcp-metadata": {
+          "optional": true
+        },
+        "kerberos": {
+          "optional": true
+        },
+        "mongodb-client-encryption": {
+          "optional": true
+        },
+        "snappy": {
+          "optional": true
+        },
+        "socks": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/mongodb-connection-string-url": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/mongodb-connection-string-url/-/mongodb-connection-string-url-3.0.2.tgz",
+      "integrity": "sha512-rMO7CGo/9BFwyZABcKAWL8UJwH/Kc2x0g72uhDWzG48URRax5TCIcJ7Rc3RZqffZzO/Gwff/jyKwCU9TN8gehA==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@types/whatwg-url": "^11.0.2",
+        "whatwg-url": "^14.1.0 || ^13.0.0"
+      }
+    },
+    "node_modules/mongoose": {
+      "version": "8.10.0",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.10.0.tgz",
+      "integrity": "sha512-nLhk3Qrv6q/HpD2k1O7kbBqsq+/kmKpdv5KJ+LLhQlII3e1p/SSLoLP6jMuSiU6+iLK7zFw4T1niAk3mA3QVug==",
+      "license": "MIT",
+      "dependencies": {
+        "bson": "^6.10.1",
+        "kareem": "2.6.3",
+        "mongodb": "~6.13.0",
+        "mpath": "0.9.0",
+        "mquery": "5.0.0",
+        "ms": "2.1.3",
+        "sift": "17.1.3"
+      },
+      "engines": {
+        "node": ">=16.20.1"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/mongoose"
+      }
+    },
+    "node_modules/mongoose/node_modules/ms": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
+      "license": "MIT"
+    },
     "node_modules/morgan": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/morgan/-/morgan-1.10.0.tgz",
@@ -2433,11 +2578,31 @@
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
       "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
     },
+    "node_modules/mpath": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/mpath/-/mpath-0.9.0.tgz",
+      "integrity": "sha512-ikJRQTk8hw5DEoFVxHG1Gn9T/xcjtdnOKIU1JTmGjZZlg9LST2mBLmcX3/ICIbgJydT2GOc15RnNy5mHmzfSew==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/mquery": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/mquery/-/mquery-5.0.0.tgz",
+      "integrity": "sha512-iQMncpmEK8R8ncT8HJGsGc9Dsp8xcgYMVSbs5jgnm1lFHTZqMJTUWTDx1LBO8+mK3tPNZWFLBghQEIOULSTHZg==",
+      "license": "MIT",
+      "dependencies": {
+        "debug": "4.x"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-      "dev": true
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "node_modules/natural-compare": {
       "version": "1.4.0",
@@ -2863,10 +3028,10 @@
       }
     },
     "node_modules/punycode": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
-      "dev": true,
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
+      "integrity": "sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg==",
+      "license": "MIT",
       "engines": {
         "node": ">=6"
       }
@@ -3185,6 +3350,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/sift": {
+      "version": "17.1.3",
+      "resolved": "https://registry.npmjs.org/sift/-/sift-17.1.3.tgz",
+      "integrity": "sha512-Rtlj66/b0ICeFzYTuNvX/EF1igRbbnGSvEyT79McoZa/DeGhMyC5pWKOEsZKnpkqtSeovd5FL/bjHWC3CIIvCQ==",
+      "license": "MIT"
+    },
     "node_modules/signal-exit": {
       "version": "3.0.6",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.6.tgz",
@@ -3208,6 +3379,15 @@
         "url": "https://github.com/chalk/slice-ansi?sponsor=1"
       }
     },
+    "node_modules/sparse-bitfield": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz",
+      "integrity": "sha512-kvzhi7vqKTfkh0PZU+2D2PIllw2ymqJKujUcyPMd9Y75Nv4nPbGJZXNhxsgdQab2BmlDct1YnfQCguEvHr7VsQ==",
+      "license": "MIT",
+      "dependencies": {
+        "memory-pager": "^1.0.2"
+      }
+    },
     "node_modules/sprintf-js": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
@@ -3392,6 +3572,18 @@
         "nodetouch": "bin/nodetouch.js"
       }
     },
+    "node_modules/tr46": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-5.0.0.tgz",
+      "integrity": "sha512-tk2G5R2KRwBd+ZN0zaEXpmzdKyOYksXwywulIX95MBODjSzMIuQnQ3m8JxgbhnL1LeVo7lqQKsYa1O3Htl7K5g==",
+      "license": "MIT",
+      "dependencies": {
+        "punycode": "^2.3.1"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/tsconfig-paths": {
       "version": "3.12.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.12.0.tgz",
@@ -3558,6 +3750,28 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/webidl-conversions": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-7.0.0.tgz",
+      "integrity": "sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g==",
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/whatwg-url": {
+      "version": "14.1.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-14.1.0.tgz",
+      "integrity": "sha512-jlf/foYIKywAt3x/XWKZ/3rz8OSJPiWktjmk891alJUEjiVxKX9LEO92qH3hv4aJ0mN3MWPvGMCy8jQi95xK4w==",
+      "license": "MIT",
+      "dependencies": {
+        "tr46": "^5.0.0",
+        "webidl-conversions": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -3757,6 +3971,14 @@
         "strip-json-comments": "^3.1.1"
       }
     },
+    "@mongodb-js/saslprep": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@mongodb-js/saslprep/-/saslprep-1.2.0.tgz",
+      "integrity": "sha512-+ywrb0AqkfaYuhHs6LxKWgqbh3I72EpEgESCw37o+9qPx9WTCkgDm2B+eMrwehGtHBWHFU4GXvnSCNiFhhausg==",
+      "requires": {
+        "sparse-bitfield": "^3.0.3"
+      }
+    },
     "@sindresorhus/is": {
       "version": "0.14.0",
       "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
@@ -3778,6 +4000,19 @@
       "integrity": "sha1-7ihweulOEdK4J7y+UnC86n8+ce4=",
       "dev": true
     },
+    "@types/webidl-conversions": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/@types/webidl-conversions/-/webidl-conversions-7.0.3.tgz",
+      "integrity": "sha512-CiJJvcRtIgzadHCYXw7dqEnMNRjhGZlYK05Mj9OyktqV8uVT8fD2BFOB7S1uwBE3Kj2Z+4UyPmFw/Ixgw/LAlA=="
+    },
+    "@types/whatwg-url": {
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@types/whatwg-url/-/whatwg-url-11.0.5.tgz",
+      "integrity": "sha512-coYR071JRaHa+xoEvvYqvnIHaVqaYrLPbsufM9BF63HkwI5Lgmy2QR8Q5K/lYDYo5AK82wOvSOS0UsLTpTG7uQ==",
+      "requires": {
+        "@types/webidl-conversions": "*"
+      }
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -3997,6 +4232,11 @@
         "fill-range": "^7.0.1"
       }
     },
+    "bson": {
+      "version": "6.10.2",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-6.10.2.tgz",
+      "integrity": "sha512-5afhLTjqDSA3akH56E+/2J6kTDuSIlBxyXPdQslj9hcIgOUE378xdOfZvC/9q3LifJNI6KR/juZ+d0NRNYBwXg=="
+    },
     "bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -4198,7 +4438,6 @@
       "version": "4.3.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
       "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
-      "dev": true,
       "requires": {
         "ms": "2.1.2"
       }
@@ -4267,6 +4506,11 @@
         "is-obj": "^2.0.0"
       }
     },
+    "dotenv": {
+      "version": "16.4.7",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.7.tgz",
+      "integrity": "sha512-47qPchRCykZC03FhkYAhrvwU4xDBFIj1QPqaarj6mdM/hgUzfPHcpkHJOn3mJAufFeeAxAzeGsr5X0M4k6fLZQ=="
+    },
     "duplexer3": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer3/-/duplexer3-0.1.4.tgz",
@@ -5312,6 +5556,11 @@
         "minimist": "^1.2.0"
       }
     },
+    "kareem": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/kareem/-/kareem-2.6.3.tgz",
+      "integrity": "sha512-C3iHfuGUXK2u8/ipq9LfjFfXFxAZMQJJq7vLS45r3D9Y2xQ/m4S8zaR4zMLFWh9AsNPXmcFfUDhTEO8UIC/V6Q=="
+    },
     "keyv": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/keyv/-/keyv-3.1.0.tgz",
@@ -5399,6 +5648,11 @@
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
     },
+    "memory-pager": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz",
+      "integrity": "sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg=="
+    },
     "merge-descriptors": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
@@ -5448,6 +5702,46 @@
       "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
+    "mongodb": {
+      "version": "6.13.0",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-6.13.0.tgz",
+      "integrity": "sha512-KeESYR5TEaFxOuwRqkOm3XOsMqCSkdeDMjaW5u2nuKfX7rqaofp7JQGoi7sVqQcNJTKuveNbzZtWMstb8ABP6Q==",
+      "requires": {
+        "@mongodb-js/saslprep": "^1.1.9",
+        "bson": "^6.10.1",
+        "mongodb-connection-string-url": "^3.0.0"
+      }
+    },
+    "mongodb-connection-string-url": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/mongodb-connection-string-url/-/mongodb-connection-string-url-3.0.2.tgz",
+      "integrity": "sha512-rMO7CGo/9BFwyZABcKAWL8UJwH/Kc2x0g72uhDWzG48URRax5TCIcJ7Rc3RZqffZzO/Gwff/jyKwCU9TN8gehA==",
+      "requires": {
+        "@types/whatwg-url": "^11.0.2",
+        "whatwg-url": "^14.1.0 || ^13.0.0"
+      }
+    },
+    "mongoose": {
+      "version": "8.10.0",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.10.0.tgz",
+      "integrity": "sha512-nLhk3Qrv6q/HpD2k1O7kbBqsq+/kmKpdv5KJ+LLhQlII3e1p/SSLoLP6jMuSiU6+iLK7zFw4T1niAk3mA3QVug==",
+      "requires": {
+        "bson": "^6.10.1",
+        "kareem": "2.6.3",
+        "mongodb": "~6.13.0",
+        "mpath": "0.9.0",
+        "mquery": "5.0.0",
+        "ms": "2.1.3",
+        "sift": "17.1.3"
+      },
+      "dependencies": {
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        }
+      }
+    },
     "morgan": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/morgan/-/morgan-1.10.0.tgz",
@@ -5480,11 +5774,23 @@
         }
       }
     },
+    "mpath": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/mpath/-/mpath-0.9.0.tgz",
+      "integrity": "sha512-ikJRQTk8hw5DEoFVxHG1Gn9T/xcjtdnOKIU1JTmGjZZlg9LST2mBLmcX3/ICIbgJydT2GOc15RnNy5mHmzfSew=="
+    },
+    "mquery": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/mquery/-/mquery-5.0.0.tgz",
+      "integrity": "sha512-iQMncpmEK8R8ncT8HJGsGc9Dsp8xcgYMVSbs5jgnm1lFHTZqMJTUWTDx1LBO8+mK3tPNZWFLBghQEIOULSTHZg==",
+      "requires": {
+        "debug": "4.x"
+      }
+    },
     "ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-      "dev": true
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "natural-compare": {
       "version": "1.4.0",
@@ -5795,10 +6101,9 @@
       }
     },
     "punycode": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
-      "dev": true
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
+      "integrity": "sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg=="
     },
     "pupa": {
       "version": "2.1.1",
@@ -6047,6 +6352,11 @@
         "object-inspect": "^1.9.0"
       }
     },
+    "sift": {
+      "version": "17.1.3",
+      "resolved": "https://registry.npmjs.org/sift/-/sift-17.1.3.tgz",
+      "integrity": "sha512-Rtlj66/b0ICeFzYTuNvX/EF1igRbbnGSvEyT79McoZa/DeGhMyC5pWKOEsZKnpkqtSeovd5FL/bjHWC3CIIvCQ=="
+    },
     "signal-exit": {
       "version": "3.0.6",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.6.tgz",
@@ -6064,6 +6374,14 @@
         "is-fullwidth-code-point": "^3.0.0"
       }
     },
+    "sparse-bitfield": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz",
+      "integrity": "sha512-kvzhi7vqKTfkh0PZU+2D2PIllw2ymqJKujUcyPMd9Y75Nv4nPbGJZXNhxsgdQab2BmlDct1YnfQCguEvHr7VsQ==",
+      "requires": {
+        "memory-pager": "^1.0.2"
+      }
+    },
     "sprintf-js": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
@@ -6204,6 +6522,14 @@
         "nopt": "~1.0.10"
       }
     },
+    "tr46": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-5.0.0.tgz",
+      "integrity": "sha512-tk2G5R2KRwBd+ZN0zaEXpmzdKyOYksXwywulIX95MBODjSzMIuQnQ3m8JxgbhnL1LeVo7lqQKsYa1O3Htl7K5g==",
+      "requires": {
+        "punycode": "^2.3.1"
+      }
+    },
     "tsconfig-paths": {
       "version": "3.12.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.12.0.tgz",
@@ -6337,6 +6663,20 @@
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
     },
+    "webidl-conversions": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-7.0.0.tgz",
+      "integrity": "sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g=="
+    },
+    "whatwg-url": {
+      "version": "14.1.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-14.1.0.tgz",
+      "integrity": "sha512-jlf/foYIKywAt3x/XWKZ/3rz8OSJPiWktjmk891alJUEjiVxKX9LEO92qH3hv4aJ0mN3MWPvGMCy8jQi95xK4w==",
+      "requires": {
+        "tr46": "^5.0.0",
+        "webidl-conversions": "^7.0.0"
+      }
+    },
     "which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
diff --git a/package.json b/package.json
index 5045e827160..72b96314401 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,9 @@
   "dependencies": {
     "cors": "2.8.5",
     "cross-env": "7.0.3",
+    "dotenv": "^16.4.7",
     "express": "4.17.1",
+    "mongoose": "^8.10.0",
     "morgan": "1.10.0"
   },
   "devDependencies": {
diff --git a/routes/api/contacts.js b/routes/api/contacts.js
index a60ebd69231..93e0c9cf667 100644
--- a/routes/api/contacts.js
+++ b/routes/api/contacts.js
@@ -1,25 +1,42 @@
-const express = require('express')
+const express = require('express');
+const {
+  getAllContacts,
+  getContactById,
+  addContact,
+  updateContact,
+  deleteContact,
+  updateStatusContact,
+} = require('../../controllers/contacts');
 
-const router = express.Router()
+const router = express.Router();
 
-router.get('/', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+// Trasy dla kontaktów
+router.get('/', getAllContacts);              // GET wszystkie kontakty
+router.get('/:contactId', getContactById);    // GET kontakt po ID
+router.post('/', addContact);                 // POST nowy kontakt
+router.put('/:contactId', updateContact);     // PUT aktualizacja kontaktu
+router.delete('/:contactId', deleteContact);  // DELETE usuwanie kontaktu
 
-router.get('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+// Trasa do aktualizacji pola favorite
+router.patch('/:contactId/favorite', async (req, res) => {
+  const { contactId } = req.params;
+  const { favorite } = req.body;
 
-router.post('/', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+  if (favorite === undefined) {
+    return res.status(400).json({ message: 'missing field favorite' });
+  }
 
-router.delete('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+  try {
+    const updatedContact = await updateStatusContact(contactId, { favorite });
 
-router.put('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+    if (!updatedContact) {
+      return res.status(404).json({ message: 'Not found' });
+    }
 
-module.exports = router
+    res.json(updatedContact);
+  } catch (error) {
+    res.status(500).json({ message: error.message });
+  }
+});
+
+module.exports = router;
diff --git a/server.js b/server.js
index db330824656..ff7f536a8d0 100644
--- a/server.js
+++ b/server.js
@@ -1,5 +1,5 @@
 const app = require('./app')
 
-app.listen(3000, () => {
-  console.log("Server running. Use our API on port: 3000")
+app.listen(3001, () => {
+  console.log("Server running. Use our API on port: 3001")
 })