[Model] create mongoose user model

models/User.js

@@ -0,0 +1,56 @@
+import mongoose from "mongoose";
+import uniqueValidator from "mongoose-unique-validator";
+import bcrypt from "bcrypt";
+
+const SALT_WORK_FACTOR = 10;
+
+const UserSchema = new mongoose.Schema({
+  firstName: {
+    type: String,
+    lowercase: true,
+    required: [true, "Can't be blank"],
+  },
+  lastName: {
+    type: String,
+    lowercase: true,
+    required: [true, "Can't be blank"],
+  },
+  email: {
+    type: String,
+    unique: true,
+    lowercase: true,
+    required: [true, "Can't be blank"],
+    match: [/\S+@\S+\.\S+/, "is invalid"],
+    index: true,
+  },
+  password: { type: String, required: true },
+});
+
+UserSchema.plugin(uniqueValidator, { message: "is already taken." });
+
+UserSchema.pre("save", (next) => {
+  if (!this.isModified("password")) {
+    return next();
+  }
+  bcrypt.genSalt(SALT_WORK_FACTOR, (err, salt) => {
+    if (err) return next(err);
+
+    // hash the password along with our new salt
+    bcrypt.hash(this.password, salt, (err, hash) => {
+      if (err) return next(err);
+
+      // override the cleartext password with the hashed one
+      this.password = hash;
+      next();
+    });
+  });
+});
+
+UserSchema.methods.comparePassword = (candidatePassword, cb) => {
+  bcrypt.compare(candidatePassword, this.password, (err, isMatch) => {
+    if (err) return cb(err);
+    cb(null, isMatch);
+  });
+};
+
+export default mongoose.models.User || mongoose.model("User", UserSchema);