import mongoose, { Schema, Document } from 'mongoose';
import bcrypt from 'bcryptjs';

export interface IUser extends Document {
  email: string;
  password: string;
  username: string;
  avatar?: string;
  preferences: {
    defaultPlaybackSpeed: number;
    theme: 'light' | 'dark';
    language: string;
  };
  createdAt: Date;
  updatedAt: Date;
  comparePassword(password: string): Promise<boolean>;
}

const userSchema = new Schema<IUser>(
  {
    email: {
      type: String,
      required: true,
      unique: true,
      lowercase: true,
      trim: true,
    },
    password: {
      type: String,
      required: true,
      minlength: 6,
    },
    username: {
      type: String,
      required: true,
      trim: true,
    },
    avatar: {
      type: String,
      default: null,
    },
    preferences: {
      defaultPlaybackSpeed: {
        type: Number,
        default: 1,
        enum: [0.75, 1, 1.25, 1.5, 1.75, 2],
      },
      theme: {
        type: String,
        default: 'light',
        enum: ['light', 'dark'],
      },
      language: {
        type: String,
        default: 'en',
      },
    },
  },
  {
    timestamps: true,
  }
);

// Hash password before saving
userSchema.pre('save', async function (next) {
  if (!this.isModified('password')) return next();

  try {
    const salt = await bcrypt.genSalt(10);
    this.password = await bcrypt.hash(this.password, salt);
    next();
  } catch (error) {
    next(error as Error);
  }
});

// Method to compare passwords
userSchema.methods.comparePassword = async function (password: string): Promise<boolean> {
  return bcrypt.compare(password, this.password);
};

// Remove password from JSON output
userSchema.methods.toJSON = function () {
  const obj = this.toObject();
  delete obj.password;
  return obj;
};

export const User = mongoose.model<IUser>('User', userSchema);