diff --git a/.gitignore b/.gitignore
index 8877fc5a644..d914c45271f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 node_modules/
 .env
 .idea
-.vscode
\ No newline at end of file
+.vscode
diff --git a/app.js b/app.js
index 40fd9bc167f..eae7968974d 100644
--- a/app.js
+++ b/app.js
@@ -1,25 +1,29 @@
-const express = require('express')
-const logger = require('morgan')
-const cors = require('cors')
+require("dotenv").config();
+const express = require("express");
+const logger = require("morgan");
+const cors = require("cors");
+const connectDB = require("./config/db");
+const contactsRouter = require("./routes/api/contacts");
 
-const contactsRouter = require('./routes/api/contacts')
+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())
+connectDB();
 
-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 statusCode = err.status || 500;
+  res.status(statusCode).json({ message: err.message });
+});
 
-module.exports = app
+module.exports = app;
diff --git a/config/db.js b/config/db.js
new file mode 100644
index 00000000000..d8fe726b9a5
--- /dev/null
+++ b/config/db.js
@@ -0,0 +1,13 @@
+const mongoose = require("mongoose");
+
+const connectDB = async () => {
+  try {
+    await mongoose.connect(process.env.MONGO_URI);
+    console.log("Database connection successful");
+  } catch (error) {
+    console.error("Database connection error:", error);
+    process.exit(1);
+  }
+};
+
+module.exports = connectDB;
diff --git a/models/Contact.js b/models/Contact.js
new file mode 100644
index 00000000000..b350cd76df5
--- /dev/null
+++ b/models/Contact.js
@@ -0,0 +1,20 @@
+const mongoose = require("mongoose");
+
+const contactSchema = new mongoose.Schema({
+  name: {
+    type: String,
+    required: [true, "Set name for contact"],
+  },
+  email: {
+    type: String,
+  },
+  phone: {
+    type: String,
+  },
+  favorite: {
+    type: Boolean,
+    default: false,
+  },
+});
+
+module.exports = mongoose.model("Contact", contactSchema);
diff --git a/models/contacts.js b/models/contacts.js
index 409d11c7c09..78778643e08 100644
--- a/models/contacts.js
+++ b/models/contacts.js
@@ -1,14 +1,51 @@
-// const fs = require('fs/promises')
+// const fs = require("fs/promises");
+const path = require("path");
+// const { nanoid } = await import("nanoid");
+const Contact = require("./Contact");
 
-const listContacts = async () => {}
+const contactsPath = path.join(__dirname, "./contacts.json");
 
-const getContactById = async (contactId) => {}
+// const readContacts = async () => {
+//   const data = await fs.readFile(contactsPath, "utf8");
+//   return JSON.parse(data);
+// };
 
-const removeContact = async (contactId) => {}
+// const writeContacts = async (contacts) => {
+//   await fs.writeFile(contactsPath, JSON.stringify(contacts, null, 2));
+// };
 
-const addContact = async (body) => {}
+const listContacts = async () => {
+  return await Contact.find();
+};
 
-const updateContact = async (contactId, body) => {}
+const getContactById = async (contactId) => {
+  return await Contact.findById(contactId);
+};
+
+const removeContact = async (contactId) => {
+  return await Contact.findByIdAndDelete(contactId);
+};
+
+const addContact = async ({ name, email, phone }) => {
+  const newContact = new Contact({ name, email, phone });
+  return await newContact.save();
+};
+
+const updateContact = async (contactId, { name, email, phone }) => {
+  return await Contact.findByIdAndUpdate(
+    contactId,
+    { name, email, phone },
+    { new: true }
+  );
+};
+
+const updateStatusContact = async (contactId, { favorite }) => {
+  return await Contact.findByIdAndUpdate(
+    contactId,
+    { favorite },
+    { new: true }
+  );
+};
 
 module.exports = {
   listContacts,
@@ -16,4 +53,5 @@ module.exports = {
   removeContact,
   addContact,
   updateContact,
-}
+  updateStatusContact,
+};
diff --git a/package-lock.json b/package-lock.json
index e6d047044e5..d5af9a5fd41 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,8 +10,12 @@
       "dependencies": {
         "cors": "2.8.5",
         "cross-env": "7.0.3",
+        "dotenv": "^16.4.5",
         "express": "4.17.1",
-        "morgan": "1.10.0"
+        "joi": "^17.13.3",
+        "mongoose": "^8.8.1",
+        "morgan": "1.10.0",
+        "nanoid": "^5.0.8"
       },
       "devDependencies": {
         "eslint": "7.19.0",
@@ -141,6 +145,45 @@
         "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/@mongodb-js/saslprep": {
+      "version": "1.1.9",
+      "resolved": "https://registry.npmjs.org/@mongodb-js/saslprep/-/saslprep-1.1.9.tgz",
+      "integrity": "sha512-tVkljjeEaAhCqTzajSdgbQ6gE6f3oneVwa3iXR6csiEwXXOFsiC6Uh9iAjAhXPtqa/XMDHWjjeNH/77m/Yq2dw==",
+      "dependencies": {
+        "sparse-bitfield": "^3.0.3"
+      }
+    },
+    "node_modules/@sideway/address": {
+      "version": "4.1.5",
+      "resolved": "https://registry.npmjs.org/@sideway/address/-/address-4.1.5.tgz",
+      "integrity": "sha512-IqO/DUQHUkPeixNQ8n0JA6102hT9CmaljNTPmQ1u8MEhBo/R4Q8eKLN/vGZxuebwOroDB4cbpjheD4+/sKFK4Q==",
+      "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",
@@ -168,6 +211,19 @@
       "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=="
+    },
+    "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==",
+      "dependencies": {
+        "@types/webidl-conversions": "*"
+      }
+    },
     "node_modules/abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -452,6 +508,14 @@
         "node": ">=8"
       }
     },
+    "node_modules/bson": {
+      "version": "6.9.0",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-6.9.0.tgz",
+      "integrity": "sha512-X9hJeyeM0//Fus+0pc5dSUMhhrrmWwQUtdavaQeF3Ta6m69matZkGWV/MrBcnwUeLC8W9kwwc2hfkZgUuCX3Ig==",
+      "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 +792,6 @@
       "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 +886,17 @@
         "node": ">=8"
       }
     },
+    "node_modules/dotenv": {
+      "version": "16.4.5",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.5.tgz",
+      "integrity": "sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg==",
+      "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",
@@ -2166,6 +2240,18 @@
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
       "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
     },
+    "node_modules/joi": {
+      "version": "17.13.3",
+      "resolved": "https://registry.npmjs.org/joi/-/joi-17.13.3.tgz",
+      "integrity": "sha512-otDA4ldcIx+ZXsKHWmp0YizCweVRZG96J10b0FevjfuncLO1oX59THoAmHkNubYJ+9gWsYsp5k8v4ib6oDv1fA==",
+      "dependencies": {
+        "@hapi/hoek": "^9.3.0",
+        "@hapi/topo": "^5.1.0",
+        "@sideway/address": "^4.1.5",
+        "@sideway/formula": "^3.0.1",
+        "@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",
@@ -2215,6 +2301,14 @@
         "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==",
+      "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 +2421,11 @@
         "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=="
+    },
     "node_modules/merge-descriptors": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
@@ -2397,6 +2496,86 @@
       "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
+    "node_modules/mongodb": {
+      "version": "6.10.0",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-6.10.0.tgz",
+      "integrity": "sha512-gP9vduuYWb9ZkDM546M+MP2qKVk5ZG2wPF63OvSRuUbqCR+11ZCAE1mOfllhlAG0wcoJY5yDL/rV3OmYEwXIzg==",
+      "dependencies": {
+        "@mongodb-js/saslprep": "^1.1.5",
+        "bson": "^6.7.0",
+        "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",
+        "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": "3.0.1",
+      "resolved": "https://registry.npmjs.org/mongodb-connection-string-url/-/mongodb-connection-string-url-3.0.1.tgz",
+      "integrity": "sha512-XqMGwRX0Lgn05TDB4PyG2h2kKO/FfWJyCzYQbIhXUxz7ETt0I/FqHjUeqj37irJ+Dl1ZtU82uYyj14u2XsZKfg==",
+      "dependencies": {
+        "@types/whatwg-url": "^11.0.2",
+        "whatwg-url": "^13.0.0"
+      }
+    },
+    "node_modules/mongoose": {
+      "version": "8.8.1",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.8.1.tgz",
+      "integrity": "sha512-l7DgeY1szT98+EKU8GYnga5WnyatAu+kOQ2VlVX1Mxif6A0Umt0YkSiksCiyGxzx8SPhGe9a53ND1GD4yVDrPA==",
+      "dependencies": {
+        "bson": "^6.7.0",
+        "kareem": "2.6.3",
+        "mongodb": "~6.10.0",
+        "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=="
+    },
     "node_modules/morgan": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/morgan/-/morgan-1.10.0.tgz",
@@ -2433,11 +2612,46 @@
       "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==",
+      "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==",
+      "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/nanoid": {
+      "version": "5.0.8",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-5.0.8.tgz",
+      "integrity": "sha512-TcJPw+9RV9dibz1hHUzlLVy8N4X9TnwirAjrU08Juo6BNKggzVfP2ZJ/3ZUSq15Xl5i85i+Z89XBO90pB2PghQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "bin": {
+        "nanoid": "bin/nanoid.js"
+      },
+      "engines": {
+        "node": "^18 || >=20"
+      }
     },
     "node_modules/natural-compare": {
       "version": "1.4.0",
@@ -2863,10 +3077,9 @@
       }
     },
     "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==",
       "engines": {
         "node": ">=6"
       }
@@ -3185,6 +3398,11 @@
         "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=="
+    },
     "node_modules/signal-exit": {
       "version": "3.0.6",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.6.tgz",
@@ -3208,6 +3426,14 @@
         "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==",
+      "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 +3618,17 @@
         "nodetouch": "bin/nodetouch.js"
       }
     },
+    "node_modules/tr46": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-4.1.1.tgz",
+      "integrity": "sha512-2lv/66T7e5yNyhAAC4NaKe5nVavzuGJQVVtRYLyQ2OI8tsJ61PMLlelehb0wi2Hx6+hT/OJUWZcw8MjlSRnxvw==",
+      "dependencies": {
+        "punycode": "^2.3.0"
+      },
+      "engines": {
+        "node": ">=14"
+      }
+    },
     "node_modules/tsconfig-paths": {
       "version": "3.12.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.12.0.tgz",
@@ -3558,6 +3795,26 @@
         "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==",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/whatwg-url": {
+      "version": "13.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-13.0.0.tgz",
+      "integrity": "sha512-9WWbymnqj57+XEuqADHrCJ2eSXzn8WXIW/YSGaZtb2WKAInQ6CHfaUUcTyyver0p8BDg5StLQq8h1vtZuwmOig==",
+      "dependencies": {
+        "tr46": "^4.1.1",
+        "webidl-conversions": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=16"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -3757,6 +4014,45 @@
         "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"
+      }
+    },
+    "@mongodb-js/saslprep": {
+      "version": "1.1.9",
+      "resolved": "https://registry.npmjs.org/@mongodb-js/saslprep/-/saslprep-1.1.9.tgz",
+      "integrity": "sha512-tVkljjeEaAhCqTzajSdgbQ6gE6f3oneVwa3iXR6csiEwXXOFsiC6Uh9iAjAhXPtqa/XMDHWjjeNH/77m/Yq2dw==",
+      "requires": {
+        "sparse-bitfield": "^3.0.3"
+      }
+    },
+    "@sideway/address": {
+      "version": "4.1.5",
+      "resolved": "https://registry.npmjs.org/@sideway/address/-/address-4.1.5.tgz",
+      "integrity": "sha512-IqO/DUQHUkPeixNQ8n0JA6102hT9CmaljNTPmQ1u8MEhBo/R4Q8eKLN/vGZxuebwOroDB4cbpjheD4+/sKFK4Q==",
+      "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",
@@ -3778,6 +4074,19 @@
       "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 +4306,11 @@
         "fill-range": "^7.0.1"
       }
     },
+    "bson": {
+      "version": "6.9.0",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-6.9.0.tgz",
+      "integrity": "sha512-X9hJeyeM0//Fus+0pc5dSUMhhrrmWwQUtdavaQeF3Ta6m69matZkGWV/MrBcnwUeLC8W9kwwc2hfkZgUuCX3Ig=="
+    },
     "bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -4198,7 +4512,6 @@
       "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 +4580,11 @@
         "is-obj": "^2.0.0"
       }
     },
+    "dotenv": {
+      "version": "16.4.5",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.5.tgz",
+      "integrity": "sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg=="
+    },
     "duplexer3": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer3/-/duplexer3-0.1.4.tgz",
@@ -5269,6 +5587,18 @@
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
       "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
     },
+    "joi": {
+      "version": "17.13.3",
+      "resolved": "https://registry.npmjs.org/joi/-/joi-17.13.3.tgz",
+      "integrity": "sha512-otDA4ldcIx+ZXsKHWmp0YizCweVRZG96J10b0FevjfuncLO1oX59THoAmHkNubYJ+9gWsYsp5k8v4ib6oDv1fA==",
+      "requires": {
+        "@hapi/hoek": "^9.3.0",
+        "@hapi/topo": "^5.1.0",
+        "@sideway/address": "^4.1.5",
+        "@sideway/formula": "^3.0.1",
+        "@sideway/pinpoint": "^2.0.0"
+      }
+    },
     "js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -5312,6 +5642,11 @@
         "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 +5734,11 @@
       "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 +5788,46 @@
       "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
+    "mongodb": {
+      "version": "6.10.0",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-6.10.0.tgz",
+      "integrity": "sha512-gP9vduuYWb9ZkDM546M+MP2qKVk5ZG2wPF63OvSRuUbqCR+11ZCAE1mOfllhlAG0wcoJY5yDL/rV3OmYEwXIzg==",
+      "requires": {
+        "@mongodb-js/saslprep": "^1.1.5",
+        "bson": "^6.7.0",
+        "mongodb-connection-string-url": "^3.0.0"
+      }
+    },
+    "mongodb-connection-string-url": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/mongodb-connection-string-url/-/mongodb-connection-string-url-3.0.1.tgz",
+      "integrity": "sha512-XqMGwRX0Lgn05TDB4PyG2h2kKO/FfWJyCzYQbIhXUxz7ETt0I/FqHjUeqj37irJ+Dl1ZtU82uYyj14u2XsZKfg==",
+      "requires": {
+        "@types/whatwg-url": "^11.0.2",
+        "whatwg-url": "^13.0.0"
+      }
+    },
+    "mongoose": {
+      "version": "8.8.1",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.8.1.tgz",
+      "integrity": "sha512-l7DgeY1szT98+EKU8GYnga5WnyatAu+kOQ2VlVX1Mxif6A0Umt0YkSiksCiyGxzx8SPhGe9a53ND1GD4yVDrPA==",
+      "requires": {
+        "bson": "^6.7.0",
+        "kareem": "2.6.3",
+        "mongodb": "~6.10.0",
+        "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 +5860,28 @@
         }
       }
     },
+    "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=="
+    },
+    "nanoid": {
+      "version": "5.0.8",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-5.0.8.tgz",
+      "integrity": "sha512-TcJPw+9RV9dibz1hHUzlLVy8N4X9TnwirAjrU08Juo6BNKggzVfP2ZJ/3ZUSq15Xl5i85i+Z89XBO90pB2PghQ=="
     },
     "natural-compare": {
       "version": "1.4.0",
@@ -5795,10 +6192,9 @@
       }
     },
     "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 +6443,11 @@
         "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 +6465,14 @@
         "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 +6613,14 @@
         "nopt": "~1.0.10"
       }
     },
+    "tr46": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-4.1.1.tgz",
+      "integrity": "sha512-2lv/66T7e5yNyhAAC4NaKe5nVavzuGJQVVtRYLyQ2OI8tsJ61PMLlelehb0wi2Hx6+hT/OJUWZcw8MjlSRnxvw==",
+      "requires": {
+        "punycode": "^2.3.0"
+      }
+    },
     "tsconfig-paths": {
       "version": "3.12.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.12.0.tgz",
@@ -6337,6 +6754,20 @@
       "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": "13.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-13.0.0.tgz",
+      "integrity": "sha512-9WWbymnqj57+XEuqADHrCJ2eSXzn8WXIW/YSGaZtb2WKAInQ6CHfaUUcTyyver0p8BDg5StLQq8h1vtZuwmOig==",
+      "requires": {
+        "tr46": "^4.1.1",
+        "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..6ddeb190f96 100644
--- a/package.json
+++ b/package.json
@@ -11,8 +11,12 @@
   "dependencies": {
     "cors": "2.8.5",
     "cross-env": "7.0.3",
+    "dotenv": "^16.4.5",
     "express": "4.17.1",
-    "morgan": "1.10.0"
+    "joi": "^17.13.3",
+    "mongoose": "^8.8.1",
+    "morgan": "1.10.0",
+    "nanoid": "^5.0.8"
   },
   "devDependencies": {
     "eslint": "7.19.0",
diff --git a/routes/api/contacts.js b/routes/api/contacts.js
index a60ebd69231..65bf111c5f6 100644
--- a/routes/api/contacts.js
+++ b/routes/api/contacts.js
@@ -1,25 +1,128 @@
-const express = require('express')
+const express = require("express");
+const joi = require("joi");
+const router = express.Router();
 
-const router = express.Router()
+const {
+  listContacts,
+  getContactById,
+  removeContact,
+  addContact,
+  updateContact,
+  updateStatusContact,
+} = require("../../models/contacts");
 
-router.get('/', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+router.get("/", async (req, res, next) => {
+  try {
+    const contacts = await listContacts();
+    res.status(200).json(contacts);
+  } catch (error) {
+    next(error);
+  }
+});
 
-router.get('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+router.get("/:id", async (req, res, next) => {
+  try {
+    const { id } = req.params;
+    const contact = await getContactById(id);
+    if (!contact) {
+      return res.status(404).json({ message: "Not found" });
+    }
+    res.status(200).json(contact);
+  } catch (error) {
+    next(error);
+  }
+});
 
-router.post('/', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+router.post("/", async (req, res, next) => {
+  try {
+    const { error } = joi
+      .object({
+        name: joi.string().required(),
+        email: joi.string().email().required(),
+        phone: joi
+          .string()
+          .pattern(/^[0-9]+$/)
+          .required(),
+      })
+      .validate(req.body);
 
-router.delete('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+    if (error) {
+      return res.status(400).json({ message: error.details[0].message });
+    }
 
-router.put('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
+    const { name, email, phone } = req.body;
+    const newContact = await addContact({ name, email, phone });
+    res.status(201).json(newContact);
+  } catch (error) {
+    next(error);
+  }
+});
 
-module.exports = router
+router.delete("/:id", async (req, res, next) => {
+  try {
+    const { id } = req.params;
+    const contact = await removeContact(id);
+    if (!contact) {
+      return res.status(404).json({ message: "Not found" });
+    }
+    res.status(200).json({ message: "contact deleted" });
+  } catch (error) {
+    next(error);
+  }
+});
+
+router.put("/:id", async (req, res, next) => {
+  try {
+    const { error } = joi
+      .object({
+        name: joi.string(),
+        email: joi.string().email(),
+        phone: joi.string().pattern(/^[0-9]+$/),
+      })
+      .min(1)
+      .validate(req.body);
+
+    if (error) {
+      return res.status(400).json({ message: error.details[0].message });
+    }
+
+    const { id } = req.params;
+    const { name, email, phone } = req.body;
+    const updatedContact = await updateContact(id, { name, email, phone });
+    if (!updatedContact) {
+      return res.status(404).json({ message: "Not found" });
+    }
+    res.status(200).json(updatedContact);
+  } catch (error) {
+    next(error);
+  }
+});
+
+router.patch("/:contactId/favorite", async (req, res, next) => {
+  try {
+    const { contactId } = req.params;
+
+    // Walidacja pola favorite
+    const { error } = joi
+      .object({
+        favorite: joi.boolean().required(),
+      })
+      .validate(req.body);
+
+    if (error) {
+      return res.status(400).json({ message: "missing field favorite" });
+    }
+
+    const updatedContact = await updateStatusContact(contactId, req.body);
+
+    if (!updatedContact) {
+      return res.status(404).json({ message: "Not found" });
+    }
+
+    res.status(200).json(updatedContact);
+  } catch (error) {
+    next(error);
+  }
+});
+
+module.exports = router;