import { EngineModel } from '@seed/engine/EngineModel';
import { BaseGraphModel } from '@seed/graphql/BaseGraphModel';
import { newError } from '@seed/helpers/Error';
import { converDateRangeToDateTime, isTimeSlotInDates, slotToDatesRange } from '@seed/helpers/Utils.dates';
import { checkIfDatesAreInAvailabilities } from '@seed/helpers/Utils.dates.intervals';
import { StatusEnum } from '@seed/interfaces/components';
import { AvailabilityComponent, DateRangeComponent, SlotComponent } from '@seed/interfaces/components.dates';
import { ApolloContext } from '@seed/interfaces/context';
import { baseSearchFunction } from '@seed/services/database/DBRequestService';
import { CheckoutEngineInput } from '@services/module-payments/functions/orders/schemas/order.schema.input';
import { BookingArgsSchema, BookingNewInputSchema } from '@src/bookings/schemas/bookings.input';
import { BookingSchema, BookingDBInterfaceSchema } from '@src/bookings/schemas/bookings.schema';
import { BookingsRessourceEnum } from '@src/__components/components';
import _ from 'lodash';
import { concat } from 'lodash';
import { DateTime } from 'luxon';
import { DurationTypeEnum } from '../components';
import BookingModel from './bookings.engine.model';

export interface NewOneBookingInterface<T> {
    model: T;
    input: BookingNewInputSchema;
    status: StatusEnum;
    availabilities?: AvailabilityComponent;
    ctx: ApolloContext;
}

export interface SaveOneBookingInterface<T> extends NewOneBookingInterface<T> {
    ressourceModel: BookingsRessourceEnum;
    ressourceId: string;
    rest: {
        capacity: number;
        comments?: string | undefined;
        checkoutInfo?: CheckoutEngineInput | undefined;
        durationType: DurationTypeEnum;
        startToEnd?: DateRangeComponent | undefined;
        slot?: SlotComponent | undefined;
    };
    permissions: any;
}

export class BookingService {
    async getBookings(args: BookingArgsSchema, ctx?: ApolloContext | null): Promise<BookingSchema[]> {
        const insi: any = {
            model: new BookingModel() as any,
            engine: true,
            query: args,
            ctx: ctx,
        };

        if (args.pagination) insi.pagination = args.pagination;
        else insi.all = true;

        return baseSearchFunction(insi);
    }

    async getBookingsToFilter(ressourceType: BookingsRessourceEnum, args: SlotComponent): Promise<string[]> {
        const idsToOmit: string[] = [];

        const bookings = await this.getBookings({
            dateRange: {
                startDate: DateTime.fromJSDate(args.startDate).startOf('day').toJSDate(),
                endDate: DateTime.fromJSDate(args.endDate).endOf('day').toJSDate(),
            },
        });

        if (bookings && bookings.length > 0) {
            // Get the booking that are in those specifiq hours
            bookings.forEach((element) => {
                const bookingDates = converDateRangeToDateTime(element.dates);
                if (isTimeSlotInDates(bookingDates, args.startTime || '00:00', args.endTime || '23:59')) {
                    const pIndex = _.findIndex(element.paths, { ressourceModel: ressourceType });
                    if (pIndex !== -1) idsToOmit.push(element.paths[pIndex].ressourceId);
                }
            });
        }

        return _.uniq(idsToOmit);
    }

    async createOneBookingWithEngine<T extends EngineModel<any, any, any>>(data: NewOneBookingInterface<T>): Promise<BookingSchema> {
        const { model, status, ctx, input, availabilities } = data;
        const { ressourceModel, ressourceId, ...rest } = input;

        const permissions: any = {
            r: [ctx.ctx.user._id, ...model.permissions.r],
            w: [ctx.ctx.user._id, ...model.permissions.w],
            d: [ctx.ctx.user._id, ...model.permissions.d],
        };

        return await this.saveBooking<T>({ input, ressourceModel, ressourceId, rest, status, model, ctx, permissions, availabilities });
    }

    async createOneBookingWithModel<T extends BaseGraphModel>(data: NewOneBookingInterface<T>): Promise<BookingSchema> {
        const { model, status, ctx, input, availabilities } = data;
        const { ressourceModel, ressourceId, ...rest } = input;

        _.remove(model.r, function(n) { return n == "public";})
        _.remove(model.w, function(n) { return n == "public";})
        _.remove(model.d, function(n) { return n == "public";})

        const permissions: any = {
            r: [ctx.ctx.user._id, ...model.r],
            w: [ctx.ctx.user._id, ...model.w],
            d: [ctx.ctx.user._id, ...model.d],
        };

        

        return await this.saveBooking<T>({ input, ressourceModel, ressourceId, rest, status, model, ctx, permissions, availabilities });
    }

    async saveBooking<T extends EngineModel<any, any, any> | BaseGraphModel>(data: SaveOneBookingInterface<T>) {
        const { ressourceModel, ressourceId, rest, status, model, ctx, permissions, input, availabilities } = data;

        const zone = process.env.TIMEZONE || 'utc';

        const dates: DateRangeComponent[] = [];
        let ressourceIdsToOmit: string[] = [];

        // (1) First check, in the bookings already made

        if (input.durationType == DurationTypeEnum.startToEnd && input.startToEnd) dates.push(input.startToEnd);
        else if (input.durationType == DurationTypeEnum.slot && input.slot) dates.push(...slotToDatesRange(input.slot));

        if (dates.length == 0) throw newError(7001);

        // (1) First check, in the availabilities
        if (availabilities) {
            const inAvailability = checkIfDatesAreInAvailabilities(converDateRangeToDateTime(dates, { zone }), availabilities);
            if (!inAvailability) throw newError(7002);
        }

        // (2) Second check
        // Verify if no overlaps with others
        if (input.slot) ressourceIdsToOmit = await this.getBookingsToFilter(ressourceModel, input.slot);
        // Check if overlap
        if (ressourceIdsToOmit.includes(ressourceId)) throw newError(7000);

        const newData: BookingDBInterfaceSchema = {
            ...rest,
            status,
            dates,
            paths: concat((model as any).getPath()),
            ownerId: ctx.ctx.user._id,
        };

        return await new BookingModel(newData).saveOne({
            additionnalData: {
                paths: concat((model as any).getPath()),
                permissions,
            },
            ctx,
        });
    }
}