diff --git a/app.js b/app.js
index 40fd9bc167f..6ce717fecfa 100644
--- a/app.js
+++ b/app.js
@@ -1,25 +1,28 @@
-const express = require('express')
-const logger = require('morgan')
-const cors = require('cors')
+import express from "express";
+import logger from "morgan";
+import cors from "cors";
 
-const contactsRouter = require('./routes/api/contacts')
+import router from "./routes/api/contactsRouter.js"; // Import your routes correctly
 
-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)
+// Use proper route for contacts API
+app.use("/api/contacts", router);
 
 app.use((req, res) => {
-  res.status(404).json({ message: 'Not found' })
-})
+  res.status(404).json({ message: "Not found" });
+});
 
+// Central error handler
 app.use((err, req, res, next) => {
-  res.status(500).json({ message: err.message })
-})
+  console.error(err.stack);
+  res.status(500).json({ message: err.message });
+});
 
-module.exports = app
+export { app };
diff --git a/controllers/contactsController.js b/controllers/contactsController.js
new file mode 100644
index 00000000000..0fa5086077a
--- /dev/null
+++ b/controllers/contactsController.js
@@ -0,0 +1,88 @@
+import { Contact } from "../models/contactsModel.js";
+// prettier-ignore
+import { contactValidation, favoriteValidation } from "../validations/validation.js";
+import { httpError } from "../helpers/httpError.js";
+
+const getAllContacts = async (_req, res) => {
+  const result = await Contact.find();
+  res.json(result);
+};
+
+const getContactById = async (req, res) => {
+  const { contactId } = req.params;
+
+  const result = await Contact.findById(contactId);
+
+  if (!result) {
+    throw httpError(404, "Contact ID Not Found");
+  }
+
+  res.json(result);
+};
+
+const addContact = async (req, res) => {
+  const { error } = contactValidation.validate(req.body);
+
+  if (error) {
+    throw httpError(400, "missing required field");
+  }
+
+  const result = await Contact.create(req.body);
+
+  res.status(201).json(result);
+};
+
+const deleteContactById = async (req, res) => {
+  const { contactId } = req.params;
+
+  const result = await Contact.findByIdAndDelete(contactId);
+
+  if (!result) {
+    throw httpError(404);
+  }
+
+  res.json({
+    message: "Contact deleted",
+  });
+};
+
+const updateContactById = async (req, res) => {
+  const { error } = contactValidation.validate(req.body);
+  if (error) {
+    throw httpError(400, "missing fields");
+  }
+
+  const { contactId } = req.params;
+
+  const result = await Contact.findByIdAndUpdate(contactId, req.body, {
+    new: true,
+  });
+
+  if (!result) {
+    throw httpError(404);
+  }
+
+  res.json(result);
+};
+
+const updateStatusContact = async (req, res) => {
+  const { error } = favoriteValidation.validate(req.body);
+  if (error) {
+    throw httpError(400, "missing field favorite");
+  }
+
+  const { contactId } = req.params;
+
+  const result = await Contact.findByIdAndUpdate(contactId, req.body, {
+    new: true,
+  });
+
+  if (!result) {
+    throw httpError(404);
+  }
+
+  res.json(result);
+};
+
+// prettier-ignore
+export { getAllContacts, getContactById, addContact, deleteContactById, updateContactById, updateStatusContact};
diff --git a/helpers/ctrlWrapper.js b/helpers/ctrlWrapper.js
new file mode 100644
index 00000000000..027cb453674
--- /dev/null
+++ b/helpers/ctrlWrapper.js
@@ -0,0 +1,12 @@
+const ctrlWrapper = (ctrl) => {
+  const func = async (req, res, next) => {
+    try {
+      await ctrl(req, res, next);
+    } catch (error) {
+      next(error);
+    }
+  };
+  return func;
+};
+
+export { ctrlWrapper };
diff --git a/helpers/httpError.js b/helpers/httpError.js
new file mode 100644
index 00000000000..d20f40ae3b6
--- /dev/null
+++ b/helpers/httpError.js
@@ -0,0 +1,15 @@
+const messages = {
+  400: "Bad request",
+  401: "Unauthorized",
+  403: "Forbidden",
+  404: "Not found",
+  409: "Conflict",
+};
+
+const httpError = (status, message = messages[status]) => {
+  const error = new Error(message);
+  error.status = status;
+  return error;
+};
+
+export { httpError };
diff --git a/images/DELETE.png b/images/DELETE.png
new file mode 100644
index 00000000000..feb939dda46
Binary files /dev/null and b/images/DELETE.png differ
diff --git a/images/DELETE_mongodb.png b/images/DELETE_mongodb.png
new file mode 100644
index 00000000000..517a4775377
Binary files /dev/null and b/images/DELETE_mongodb.png differ
diff --git a/images/GET_all.png b/images/GET_all.png
new file mode 100644
index 00000000000..2837f950e79
Binary files /dev/null and b/images/GET_all.png differ
diff --git a/images/GET_byid.png b/images/GET_byid.png
new file mode 100644
index 00000000000..1e1b9d50cc6
Binary files /dev/null and b/images/GET_byid.png differ
diff --git a/images/PATCH.png b/images/PATCH.png
new file mode 100644
index 00000000000..431cc82570b
Binary files /dev/null and b/images/PATCH.png differ
diff --git a/images/PATCH_mongodb1.png b/images/PATCH_mongodb1.png
new file mode 100644
index 00000000000..718b7af9ef9
Binary files /dev/null and b/images/PATCH_mongodb1.png differ
diff --git a/images/PATCH_mongodb2.png b/images/PATCH_mongodb2.png
new file mode 100644
index 00000000000..003b77e9f93
Binary files /dev/null and b/images/PATCH_mongodb2.png differ
diff --git a/images/POST_mongodb.png b/images/POST_mongodb.png
new file mode 100644
index 00000000000..83babefe7d9
Binary files /dev/null and b/images/POST_mongodb.png differ
diff --git a/images/POST_postman.png b/images/POST_postman.png
new file mode 100644
index 00000000000..9f4e6bd9d32
Binary files /dev/null and b/images/POST_postman.png differ
diff --git a/images/PUT.png b/images/PUT.png
new file mode 100644
index 00000000000..ece05629c2e
Binary files /dev/null and b/images/PUT.png differ
diff --git a/images/PUT_mongodb.png b/images/PUT_mongodb.png
new file mode 100644
index 00000000000..a1a10fb1f72
Binary files /dev/null and b/images/PUT_mongodb.png differ
diff --git a/models/contacts.js b/models/contacts.js
deleted file mode 100644
index 409d11c7c09..00000000000
--- a/models/contacts.js
+++ /dev/null
@@ -1,19 +0,0 @@
-// const fs = require('fs/promises')
-
-const listContacts = async () => {}
-
-const getContactById = async (contactId) => {}
-
-const removeContact = async (contactId) => {}
-
-const addContact = async (body) => {}
-
-const updateContact = async (contactId, body) => {}
-
-module.exports = {
-  listContacts,
-  getContactById,
-  removeContact,
-  addContact,
-  updateContact,
-}
diff --git a/models/contacts.json b/models/contacts.json
deleted file mode 100644
index a21679132de..00000000000
--- a/models/contacts.json
+++ /dev/null
@@ -1,62 +0,0 @@
-[
-  {
-    "id": "AeHIrLTr6JkxGE6SN-0Rw",
-    "name": "Allen Raymond",
-    "email": "nulla.ante@vestibul.co.uk",
-    "phone": "(992) 914-3792"
-  },
-  {
-    "id": "qdggE76Jtbfd9eWJHrssH",
-    "name": "Chaim Lewis",
-    "email": "dui.in@egetlacus.ca",
-    "phone": "(294) 840-6685"
-  },
-  {
-    "id": "drsAJ4SHPYqZeG-83QTVW",
-    "name": "Kennedy Lane",
-    "email": "mattis.Cras@nonenimMauris.net",
-    "phone": "(542) 451-7038"
-  },
-  {
-    "id": "vza2RIzNGIwutCVCs4mCL",
-    "name": "Wylie Pope",
-    "email": "est@utquamvel.net",
-    "phone": "(692) 802-2949"
-  },
-  {
-    "id": "05olLMgyVQdWRwgKfg5J6",
-    "name": "Cyrus Jackson",
-    "email": "nibh@semsempererat.com",
-    "phone": "(501) 472-5218"
-  },
-  {
-    "id": "1DEXoP8AuCGYc1YgoQ6hw",
-    "name": "Abbot Franks",
-    "email": "scelerisque@magnis.org",
-    "phone": "(186) 568-3720"
-  },
-  {
-    "id": "Z5sbDlS7pCzNsnAHLtDJd",
-    "name": "Reuben Henry",
-    "email": "pharetra.ut@dictum.co.uk",
-    "phone": "(715) 598-5792"
-  },
-  {
-    "id": "C9sjBfCo4UJCWjzBnOtxl",
-    "name": "Simon Morton",
-    "email": "dui.Fusce.diam@Donec.com",
-    "phone": "(233) 738-2360"
-  },
-  {
-    "id": "e6ywwRe4jcqxXfCZOj_1e",
-    "name": "Thomas Lucas",
-    "email": "nec@Nulla.com",
-    "phone": "(704) 398-7993"
-  },
-  {
-    "id": "rsKkOQUi80UsgVPCcLZZW",
-    "name": "Alec Howard",
-    "email": "Donec.elementum@scelerisquescelerisquedui.net",
-    "phone": "(748) 206-2688"
-  }
-]
diff --git a/models/contactsModel.js b/models/contactsModel.js
new file mode 100644
index 00000000000..6b93342608f
--- /dev/null
+++ b/models/contactsModel.js
@@ -0,0 +1,27 @@
+import { Schema, model } from "mongoose";
+
+const contactSchema = new Schema(
+  {
+    name: {
+      type: String,
+      required: [true, "Set name for contact"],
+    },
+    email: {
+      type: String,
+      required: [true, "Set email for contact"],
+    },
+    phone: {
+      type: String,
+      required: [true, "Set phone for contact"],
+    },
+    favorite: {
+      type: Boolean,
+      default: false,
+    },
+  },
+  { versionKey: false }
+);
+
+const Contact = model("contact", contactSchema);
+
+export { Contact };
diff --git a/package-lock.json b/package-lock.json
index e6d047044e5..5af55b73b71 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,10 @@
       "dependencies": {
         "cors": "2.8.5",
         "cross-env": "7.0.3",
+        "dotenv": "^16.4.5",
         "express": "4.17.1",
+        "joi": "^17.13.3",
+        "mongoose": "^8.6.3",
         "morgan": "1.10.0"
       },
       "devDependencies": {
@@ -141,6 +144,45 @@
         "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 +210,19 @@
       "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 +507,14 @@
         "node": ">=8"
       }
     },
+    "node_modules/bson": {
+      "version": "6.8.0",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-6.8.0.tgz",
+      "integrity": "sha512-iOJg8pr7wq2tg/zSlCCHMi3hMm5JTOxLTagf3zxhcenHsFp+c6uOs6K7W5UE7A4QIJGtqh/ZovFNMP4mOPJynQ==",
+      "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 +791,6 @@
       "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 +885,17 @@
         "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 +2239,18 @@
       "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 +2300,14 @@
         "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 +2420,11 @@
         "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 +2495,86 @@
       "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
+    "node_modules/mongodb": {
+      "version": "6.8.0",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-6.8.0.tgz",
+      "integrity": "sha512-HGQ9NWDle5WvwMnrvUxsFYPd3JEbqD3RgABHBQRuoCEND0qzhsd0iH5ypHsf1eJ+sXmvmyKpP+FLOKY8Il7jMw==",
+      "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": "8.6.3",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.6.3.tgz",
+      "integrity": "sha512-++yRmm7hjMbqVA/8WeiygTnEfrFbiy+OBjQi49GFJIvCQuSYE56myyQWo4j5hbpcHjhHQU8NukMNGTwAWFWjIw==",
+      "dependencies": {
+        "bson": "^6.7.0",
+        "kareem": "2.6.3",
+        "mongodb": "6.8.0",
+        "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 +2611,29 @@
       "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/natural-compare": {
       "version": "1.4.0",
@@ -2863,10 +3059,9 @@
       }
     },
     "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 +3380,11 @@
         "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 +3408,14 @@
         "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 +3600,17 @@
         "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 +3777,26 @@
         "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 +3996,45 @@
         "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 +4056,19 @@
       "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 +4288,11 @@
         "fill-range": "^7.0.1"
       }
     },
+    "bson": {
+      "version": "6.8.0",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-6.8.0.tgz",
+      "integrity": "sha512-iOJg8pr7wq2tg/zSlCCHMi3hMm5JTOxLTagf3zxhcenHsFp+c6uOs6K7W5UE7A4QIJGtqh/ZovFNMP4mOPJynQ=="
+    },
     "bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -4198,7 +4494,6 @@
       "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 +4562,11 @@
         "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 +5569,18 @@
       "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 +5624,11 @@
         "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 +5716,11 @@
       "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 +5770,46 @@
       "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
       "dev": true
     },
+    "mongodb": {
+      "version": "6.8.0",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-6.8.0.tgz",
+      "integrity": "sha512-HGQ9NWDle5WvwMnrvUxsFYPd3JEbqD3RgABHBQRuoCEND0qzhsd0iH5ypHsf1eJ+sXmvmyKpP+FLOKY8Il7jMw==",
+      "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": "8.6.3",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.6.3.tgz",
+      "integrity": "sha512-++yRmm7hjMbqVA/8WeiygTnEfrFbiy+OBjQi49GFJIvCQuSYE56myyQWo4j5hbpcHjhHQU8NukMNGTwAWFWjIw==",
+      "requires": {
+        "bson": "^6.7.0",
+        "kareem": "2.6.3",
+        "mongodb": "6.8.0",
+        "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 +5842,23 @@
         }
       }
     },
+    "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 +6169,9 @@
       }
     },
     "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 +6420,11 @@
         "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 +6442,14 @@
         "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 +6590,14 @@
         "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 +6731,20 @@
       "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..20cdfd7bb51 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "template",
   "version": "0.0.0",
   "private": true,
+  "type": "module",
   "scripts": {
     "start": "cross-env NODE_ENV=production node ./server.js",
     "start:dev": "cross-env NODE_ENV=development nodemon ./server.js",
@@ -11,7 +12,10 @@
   "dependencies": {
     "cors": "2.8.5",
     "cross-env": "7.0.3",
+    "dotenv": "^16.4.5",
     "express": "4.17.1",
+    "joi": "^17.13.3",
+    "mongoose": "^8.6.3",
     "morgan": "1.10.0"
   },
   "devDependencies": {
diff --git a/routes/api/contacts.js b/routes/api/contacts.js
deleted file mode 100644
index a60ebd69231..00000000000
--- a/routes/api/contacts.js
+++ /dev/null
@@ -1,25 +0,0 @@
-const express = require('express')
-
-const router = express.Router()
-
-router.get('/', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
-
-router.get('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
-
-router.post('/', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
-
-router.delete('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
-
-router.put('/:contactId', async (req, res, next) => {
-  res.json({ message: 'template message' })
-})
-
-module.exports = router
diff --git a/routes/api/contactsRouter.js b/routes/api/contactsRouter.js
new file mode 100644
index 00000000000..bc06fd9f5e9
--- /dev/null
+++ b/routes/api/contactsRouter.js
@@ -0,0 +1,42 @@
+import express from "express";
+import { ctrlWrapper } from "../../helpers/ctrlWrapper.js";
+// prettier-ignore
+import { addContact, deleteContactById, getAllContacts, getContactById, updateContactById, updateStatusContact } from "../../controllers/contactsController.js";
+
+const router = express.Router();
+
+/* GET: // http://localhost:3000/api/contacts */
+router.get("/", ctrlWrapper(getAllContacts));
+
+/* GET: // http://localhost:3000/api/contacts/:contactId */
+router.get("/:contactId", ctrlWrapper(getContactById));
+
+/* POST: // http://localhost:3000/api/contacts/ 
+{
+    "name": "Valerie Oblea",
+    "email": "valerieoblea@example.com",
+    "phone": "(632) 540-7721"
+} 
+*/
+router.post("/", ctrlWrapper(addContact));
+
+/* DELETE: // http://localhost:3000/api/contacts/:contactId */
+router.delete("/:contactId", ctrlWrapper(deleteContactById));
+
+/* PUT: // http://localhost:3000/api/contacts/:contactId 
+{
+    "name": "Mila Day",
+    "email": "miladay@example.com",
+    "phone": "(631) 222-8789"
+} 
+*/
+router.put("/:contactId", ctrlWrapper(updateContactById));
+
+/* PATCH: // http://localhost:3000/api/contacts/:contactId/favorite
+{
+    "favorite": true,
+}
+*/
+router.patch("/:contactId/favorite", ctrlWrapper(updateStatusContact));
+
+export default router;
diff --git a/server.js b/server.js
index fc4e4c6bb3a..778059fe761 100644
--- a/server.js
+++ b/server.js
@@ -1,5 +1,34 @@
-const app = require("./app");
+import mongoose from "mongoose";
+import dotenv from "dotenv";
+import { app } from "./app.js";
 
-app.listen(3000, () => {
-  console.log("Server is running. Use our API on port: 3000");
+dotenv.config();
+
+const { DB_HOST, PORT = 3000 } = process.env;
+
+if (!DB_HOST) {
+  throw new Error("DB_HOST environment variable is not defined.");
+}
+
+mongoose
+  .connect(DB_HOST)
+  .then(() => {
+    app.listen(PORT, () => {
+      console.log(`Server running. Using our API on port: ${PORT}`);
+    });
+    console.log("Database connection successful");
+  })
+  .catch((err) => {
+    console.error(`Database connection failed. Error: ${err.message}`);
+    process.exit(1); // Exit the process if unable to connect to the database
+  });
+
+process.on("unhandledRejection", (err) => {
+  console.error(`Unhandled Rejection: ${err.message}`);
+  process.exit(1);
+});
+
+process.on("uncaughtException", (err) => {
+  console.error(`Uncaught Exception: ${err.message}`);
+  process.exit(1);
 });
diff --git a/validations/validation.js b/validations/validation.js
new file mode 100644
index 00000000000..495989bc890
--- /dev/null
+++ b/validations/validation.js
@@ -0,0 +1,15 @@
+import Joi from "joi";
+
+// Define validation for adding/updating a contact
+const contactValidation = Joi.object({
+  name: Joi.string().required(),
+  email: Joi.string().required(),
+  phone: Joi.string().required(),
+});
+
+// Define validation for updating favorite field
+const favoriteValidation = Joi.object({
+  favorite: Joi.bool().required(),
+});
+
+export { contactValidation, favoriteValidation };