frontend/src/app/service/db/KeyValue.ts

import {Model} from './Model';

export interface IKeyValue {
    id?: number;
    key: string;
    value: string;
    json: boolean;
    offlineUpdatedAt?: string;
}

export class KeyValue extends Model<IKeyValue> implements IKeyValue {
    id?: number;
    key: string;
    value: string;
    json: boolean;
    offlineUpdatedAt?: string;

    public static getTableName() {
        return 'keyValues';
    }

    public static getSchema() {
        return '++id, key, value, json, offlineUpdatedAt';
    }

    constructor(key: string, value: string, json: boolean, offlineUpdatedAt?: string, id?: number) {
        super();

        this.key = key;
        this.value = value;
        this.json = json;

        if ( typeof offlineUpdatedAt !== 'undefined' ) {
            this.offlineUpdatedAt = offlineUpdatedAt;
        }

        if ( id ) {
            this.id = id;
        }
    }

    get data(): any {
        if ( this.json ) {
            return JSON.parse(this.value);
        }

        return this.value;
    }

    set data(val: any) {
        if ( typeof val === 'string' ) {
            this.json = false;
            this.value = val;
        } else {
            this.json = true;
            this.value = JSON.stringify(val);
        }
    }

    public getSaveRecord(): any {
        return {
            ...(this.id ? { id: this.id } : {}),
            key: this.key,
            value: this.value,
            json: this.json,
            ...(typeof this.offlineUpdatedAt === 'undefined' ? {} : { offlineUpdatedAt: this.offlineUpdatedAt })
        };
    }

    public getDatabase(): Dexie.Table<IKeyValue, number> {
        return this.staticClass().dbService.table('keyValues') as Dexie.Table<IKeyValue, number>;
    }
}