import { error } from '@sveltejs/kit'
import type { PageServerLoad } from './$types'
import { fetchAPI } from '$utils/api'
import { PUBLIC_FILTERS_DEFAULT_COUNTRY, PUBLIC_FILTERS_DEFAULT_SORT, PUBLIC_GRID_AMOUNT } from '$env/static/public'


export const load = (async ({ url, setHeaders }) => {
    try {
        // Query parameters
        const queryCountry = url.searchParams.get('country') || PUBLIC_FILTERS_DEFAULT_COUNTRY
        const querySort = url.searchParams.get('sort') || PUBLIC_FILTERS_DEFAULT_SORT

        // 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: ${PUBLIC_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}" }}},
                    status: { _eq: "published" },
                }
            )` : `(
                filter: {
                    status: { _eq: "published" },
                }
            )`} {
                count { id }
            }

            settings {
                seo_image_photos { id }
            }
        }`)

        if (res) {
            setHeaders({ 'Cache-Control': 'public, max-age=1, stale-while-revalidate=86399' })

            const { data } = res

            return {
                photos: data.photos,
                filteredCountryExists: data.country.length > 0,
                totalPhotos: data.total_published[0].count.id,
                settings: data.settings,
            }
        }
    } catch (err) {
        throw error(500, err.message)
    }
}) satisfies PageServerLoad