import type { RequestEvent, RequestHandlerOutput } from '@sveltejs/kit'
import { fetchAPI } from '$utils/api'

// Default filters values
const defaultCountry = String(import.meta.env.VITE_FILTERS_DEFAULT_COUNTRY)
const defaultSort = String(import.meta.env.VITE_FILTERS_DEFAULT_SORT)

export async function get({ url }: RequestEvent): Promise<RequestHandlerOutput> {
    try {
        // Query parameters
        const queryCountry = url.searchParams.get('country') || defaultCountry
        const querySort = url.searchParams.get('sort') || defaultSort

        // Query
        const res = await fetchAPI(`
            query {
                photos: photo (
                    filter: {
                        ${queryCountry !== 'all' ? `location: { country: { slug: { _eq: "${queryCountry}" }}},` : ''}
                        status: { _eq: "published" },
                    },
                    sort: "${querySort === 'latest' ? '-' : ''}date_created",
                    limit: ${import.meta.env.VITE_GRID_AMOUNT},
                    page: 1,
                ) {
                    id
                    title
                    slug
                    image {
                        id
                        title
                    }
                    location {
                        slug
                        name
                        region
                        country {
                            slug
                            name
                            flag { id }
                        }
                    }
                    city
                    date_created
                }

                country: country (
                    filter: {
                        slug: { _eq: "${queryCountry}" },
                        status: { _eq: "published" },
                    },
                ) {
                    slug
                }

                # Total
                total_published: photo_aggregated ${queryCountry !== 'all' ? `(filter: { location: { country: { slug: { _eq: "${queryCountry}" }}}})` : ''} {
                    count { id }
                }
            }
        `)

        const { data } = res

        return {
            body: {
                photos: data.photos,
                filteredCountryExists: data.country.length > 0,
                totalPhotos: data.total_published[0].count.id,
            }
        }
    } catch (error) {
        return {
            status: 404,
            body: error,
        }
    }
}