import { Schema, model, Types } from 'mongoose';
import { 
	ALGORITHM_AES_256_GCM,
	ENCODING_SCHEME_UTF8,
	ENCODING_SCHEME_BASE64
} from '../variables';

export interface IBackupPrivateKey {
	_id: Types.ObjectId;
	user: Types.ObjectId;
	encryptedPrivateKey: string;
	iv: string;
	tag: string;
	salt: string;
	algorithm: string;
	keyEncoding: 'base64' | 'utf8';
	verifier: string;
}

const backupPrivateKeySchema = new Schema<IBackupPrivateKey>(
	{
		user: {
			type: Schema.Types.ObjectId,
			ref: 'User',
			required: true
		},
		encryptedPrivateKey: {
			type: String,
			select: false,
			required: true
		},
		iv: {
			type: String,
			select: false,
			required: true
		},
		tag: {
			type: String,
			select: false,
			required: true
		},
        algorithm: { // the encryption algorithm used
            type: String,
            enum: [ALGORITHM_AES_256_GCM],
            required: true
        },
        keyEncoding: {
            type: String,
            enum: [
                ENCODING_SCHEME_UTF8,
                ENCODING_SCHEME_BASE64
            ],
			required: true
        },
		salt: {
			type: String,
			select: false,
			required: true
		},
		verifier: {
			type: String,
			select: false,
			required: true
		}
	},
	{
		timestamps: true
	}
);

const BackupPrivateKey = model<IBackupPrivateKey>(
	'BackupPrivateKey',
	backupPrivateKeySchema
);

export default BackupPrivateKey;