import { AjaxUtils } from 'api/AjaxUtils';

import { IPokemon } from 'app/models/Pokemon';

interface IPokemonJSON extends IPokemon {}
interface IPokemonService {}

export class PokemonService implements IPokemonService {
    public getPokemonList() {
        const queryParameters = {
            type: 'no touch',
            is_active: true,
        };

        return AjaxUtils.ajaxGet('/dist/db/order.json', queryParameters)
        .then((response : Array<IPokemonJSON>) => {
            return Promise.resolve(this.serializePokemonList(response));
        });
    }

    private serializePokemonList(jsonPokemonList : Array<IPokemonJSON>) : Array<IPokemon> {
        const pokemonList = jsonPokemonList.reduce((result : Array<IPokemon>, pokemonJson) => {
            try {
                if (typeof pokemonJson.name !== 'string') {
                    throw new Error('pokemon missing name');
                }
                if (typeof pokemonJson.id !== 'string') {
                    throw new Error('pokemon missing id');
                }
                if (typeof pokemonJson.family !== 'string') {
                    throw new Error('pokemon missing family');
                }
                if (typeof pokemonJson.dex !== 'number') {
                    throw new Error('pokemon missing dex');
                }
                if (typeof pokemonJson.stats !== 'object') {
                    throw new Error('pokemon missing stats');
                }
                const pokemon : IPokemon = { ...pokemonJson };
                result.push(pokemon);
            } catch (e) {
                /* tslint:disable-next-line:no-console */
                console.error(pokemonJson, e.message);
            }
            return result;
        }, []);
        return pokemonList;
    }
}