const ALLOWED_FIELDS = ['contents', 'included_segments', 'excluded_segments', 'filters', 'include_player_ids',
    'app_id', 'app_ids', 'headings', 'subtitle', 'template_id', 'content_available', 'mutable_content',
    'data', 'url', 'ios_attachments', 'big_picture', 'adm_big_picture', 'chrome_big_picture', 'buttons',
    'web_buttons', 'ios_category', 'android_background_layout', 'small_icon', 'large_icon', 'adm_small_icon',
    'adm_large_icon', 'chrome_web_icon', 'chrome_web_image', 'firefox_icon', 'chrome_icon', 'ios_sound',
    'android_sound', 'android_led_color', 'android_accent_color', 'android_visibility', 'adm_sound', 'ios_badgeType',
    'ios_badgeCount', 'collapse_id', 'send_after', 'delayed_option', 'delivery_time_of_day', 'ttl', 'priority',
    'android_group', 'android_group_message', 'adm_group', 'adm_group_message', 'isIos', 'isAndroid',
    'isAnyWeb', 'isChromeWeb', 'isFirefox', 'isSafari', 'isWP', 'isWP_WNS', 'isAdm', 'isChrome',
    'android_channel_id', 'existing_android_channel_id'];

export interface PostBody {
    contents: {
        [key: string]: string
    };
    data: any;
    content_available: any;
    template_id: any;
    included_segments: any;
    excluded_segments: any;
    filters: any;
    app_ids;
    app_id;
    include_player_ids: string[];
};

interface ClientNotification {
    setContent(contents): void;
    setExcludedSegments(excludedSegments: string[]): void;
    setFilters(filters: string): void;
    setIncludedSegments(includedSegments: string[]): void;
    setParameter(name: string, value: any): void;
    setTargetDevices(include_player_ids: string[]): void;
    postBody: PostBody;
}

export class Notification {
    public initialBody: { contents?: any, content_available?: any, template_id?: any };
    public postBody: PostBody;
    public allowed_fields: string[] = ALLOWED_FIELDS;

    constructor(initialBody: { contents?: any, content_available?: any, template_id?: any }) {
        this.initialBody = initialBody;
        this.postBody = <any>{};

        if (initialBody.constructor !== Object) {
            throw 'Body must be a JSON object';
        }

        if ('contents' in initialBody) {
            this.postBody.contents = this.initialBody.contents;
            return;
        }

        if ('content_available' in initialBody) {
            this.postBody.content_available = this.initialBody.content_available;
            return;
        }

        if ('template_id' in initialBody) {
            this.postBody.template_id = this.initialBody.template_id;
            return;
        }

        throw 'Body must include one of the following fields: contents, content_available, template_id'
    }

    setParameter(name: string, value: any) {
        if (name && name[0] === '!') {
            name = name.substring(1);
        } else if (ALLOWED_FIELDS.indexOf(name) === -1) {
            throw '"' + name + '" is not present in documentation. You should add a ' +
            'exclamation mark to the begging of the name, if you want to set it : !' + name;
        }
        this.postBody[name] = value;
        return this;
    }

    setContent(contents) {
        this.postBody.contents = contents;
        return this;
    }

    setIncludedSegments<T>(included_segments: T[]) {
        this.postBody.included_segments = included_segments;
        return this;
    }

    setExcludedSegments<T>(excluded_segments: T[]) {
        this.postBody.excluded_segments = excluded_segments;
        return this;
    }

    setFilters(filters: any) {
        this.postBody.filters = filters;
        return this;
    }

    setTargetDevices(include_player_ids: string[]) {
        this.postBody.include_player_ids = include_player_ids;
        return this;
    }
}