import { ElementType, Elements } from '../../elements';
import { IDeliveryClientConfig } from '../../config';
import {
    ClientTypes,
    Filters,
    IContentItem,
    IKontentListAllResponse,
    IKontentListResponse,
    IQueryConfig,
    Parameters,
    SortOrder
} from '../../models';
import { QueryService } from '../../services';
import { BaseListingQuery } from './base-listing-query.class';

export abstract class BaseItemListingQuery<
    TClientTypes extends ClientTypes,
    TResponse extends IKontentListResponse,
    TAllResponse extends IKontentListAllResponse,
    TQueryConfig extends IQueryConfig,
    TContract
> extends BaseListingQuery<TClientTypes, IContentItem, TResponse, TAllResponse, TQueryConfig, TContract> {
    constructor(protected config: IDeliveryClientConfig, protected queryService: QueryService<TClientTypes>) {
        super(config, queryService);
    }

    /**
     * Empty filter condition
     * @param element Element with empty value
     */
    emptyFilter(element: string): this {
        this.parameters.push(new Filters.EmptyFilter(element));
        return this;
    }

    /**
     * Not empty filter condition
     * @param element Element with non-empty value
     */
    notEmptyFilter(element: string): this {
        this.parameters.push(new Filters.NotEmptyFilter(element));
        return this;
    }

    /**
     * Equals filter condition
     * @param element Element to filter. Example: 'elements.movie'
     * @param value Value to match. Example: 'Kingsman'
     */
    equalsFilter(element: string, value: string): this {
        this.parameters.push(new Filters.EqualsFilter(element, value));
        return this;
    }

    /**
     * Not equals filter condition
     * @param element Element to filter. Example: 'elements.movie'
     * @param value Value to match. Example: 'Kingsman'
     */
    notEqualsFilter(element: string, value: string): this {
        this.parameters.push(new Filters.NotEqualsFilter(element, value));
        return this;
    }

    /**
     * All filter
     * @param element Element to filter.
     * @param values Values
     */
    allFilter(element: string, values: string[]): this {
        this.parameters.push(new Filters.AllFilter(element, values));
        return this;
    }

    /**
     * Any filter
     * @param element Element to filter.
     * @param values Values
     */
    anyFilter(element: string, values: string[]): this {
        this.parameters.push(new Filters.AnyFilter(element, values));
        return this;
    }

    /**
     * Contains filter
     * @param element Element to filter.
     * @param values Values
     */
    containsFilter(element: string, values: string[]): this {
        this.parameters.push(new Filters.ContainsFilter(element, values));
        return this;
    }

    /**
     * Greater then filter
     * @param element Element to filter.
     * @param value Value
     */
    greaterThanFilter(element: string, value: string | number): this {
        this.parameters.push(new Filters.GreaterThanFilter(element, value));
        return this;
    }

    /**
     * Greater then or equals filter
     * @param element Element to filter.
     * @param value Value
     */
    greaterThanOrEqualFilter(element: string, value: string | number): this {
        this.parameters.push(new Filters.GreaterThanOrEqualFilter(element, value));
        return this;
    }

    /**
     * In filter
     * @param element Element to filter.
     * @param values Values
     */
    inFilter(element: string, values: string[]): this {
        this.parameters.push(new Filters.InFilter(element, values));
        return this;
    }

    /**
     * Not in filter
     * @param element Element to filter.
     * @param values Values
     */
    notInFilter(element: string, values: string[]): this {
        this.parameters.push(new Filters.NotInFilter(element, values));
        return this;
    }

    /**
     * Less then filter
     * @param element Element to filter.
     * @param value Value
     */
    lessThanFilter(element: string, value: string | number): this {
        this.parameters.push(new Filters.LessThanFilter(element, value));
        return this;
    }

    /**
     * @param element Element to filter.
     * @param value Value
     */
    lessThanOrEqualFilter(element: string, value: string | number): this {
        this.parameters.push(new Filters.LessThanOrEqualFilter(element, value));
        return this;
    }

    /**
     * @param element Element to filter.
     * @param lowerValue Lower value of range (e.g. 2)
     * @param higherValue Higher value of range (e.g. 10)
     */
    rangeFilter(element: string, lowerValue: number | string, higherValue: number | string): this {
        this.parameters.push(new Filters.RangeFilter(element, lowerValue, higherValue));
        return this;
    }

    /**
     * Limits the number of items returned by query
     * @param limit Number of items to load
     */
    limitParameter(limit: number): this {
        this.parameters.push(new Parameters.LimitParameter(limit));
        return this;
    }

    /**
     * Orders query based on given element and sort order
     * @param element Element by which to order
     * @param sortOrder Asc/Desc order type
     */
    orderParameter(element: string, sortOrder: SortOrder): this {
        this.parameters.push(new Parameters.OrderParameter(element, sortOrder));
        return this;
    }

    /**
     * Sets descending order on given element
     * @param element Element by which to order
     */
    orderByDescending(element: string): this {
        this.parameters.push(new Parameters.OrderParameter(element, 'desc'));
        return this;
    }

    /**
     * Sets Ascending order on given element
     * @param element Element by which to order
     */
    orderByAscending(element: string): this {
        this.parameters.push(new Parameters.OrderParameter(element, 'asc'));
        return this;
    }

    /**
     * Skips the selected number of items
     * @param skip Number of items to skip
     */
    skipParameter(skip: number): this {
        this.parameters.push(new Parameters.SkipParameter(skip));
        return this;
    }

    protected linkItemsInRte(allContentItems: IContentItem[]): void {
        for (const item of allContentItems) {
            for (const elementKey of Object.keys(item.elements)) {
                const element = item.elements[elementKey];

                if (element.type === ElementType.ModularContent) {
                    const linkedItemElement = element as Elements.LinkedItemsElement;

                    // We create separate array for ordered items because the 'linkedItems' from response might be incomplete
                    // e.g. If 4 items are linked, only 2 might be available in the response. Rest needs to be mapped from all available items
                    const orderedLinkedItems: IContentItem[] = [];

                    for (const linkedItemCodename of linkedItemElement.value) {
                        let linkedItem: IContentItem | undefined;

                        const linkedItemInElement = linkedItemElement.linkedItems.find(
                            (m) => m.system.codename.toLowerCase() === linkedItemCodename.toLowerCase()
                        );
                        if (linkedItemInElement) {
                            linkedItem = linkedItemInElement;
                        } else {
                            linkedItem = allContentItems.find(
                                (m) => m.system.codename.toLowerCase() === linkedItemCodename.toLowerCase()
                            );
                        }

                        if (linkedItem) {
                            orderedLinkedItems.push(linkedItem);
                        }
                    }

                    // Replace linked items with the ordered one
                    linkedItemElement.linkedItems = orderedLinkedItems;
                }

                if (element.type === ElementType.RichText) {
                    const orderedLinkedItems: IContentItem[] = [];

                    const richTextElement = element as Elements.RichTextElement;

                    for (const linkedItemCodename of richTextElement.linkedItemCodenames) {
                        let linkedItem: IContentItem | undefined;

                        const linkedItemInElement = richTextElement.linkedItems.find(
                            (m) => m.system.codename.toLowerCase() === linkedItemCodename.toLowerCase()
                        );
                        if (linkedItemInElement) {
                            linkedItem = linkedItemInElement;
                        } else {
                            linkedItem = allContentItems.find(
                                (m) => m.system.codename.toLowerCase() === linkedItemCodename.toLowerCase()
                            );
                        }

                        if (linkedItem) {
                            orderedLinkedItems.push(linkedItem);
                        }
                    }

                    richTextElement.linkedItems = orderedLinkedItems;
                }
            }
        }
    }
}