import { getSessionUser } from '$lib/server/auth/session';
import { getPermissions } from '$lib/server/auth/authorization';
import { redirect } from '@sveltejs/kit';
import { getDatabase } from '$lib/server/database';
import type { LayoutServerLoad } from './$types';
import { getContributorMode } from '$lib/server/contributor-mode';

export const load: LayoutServerLoad = async ({ cookies }) => {
	const user = await getSessionUser(cookies);
	if (!user) redirect(303, '/sign-in');
	const permissions = await getPermissions(user);
	if (!permissions.includes('*') && !permissions.includes('isac.access')) redirect(303, '/account');
	const canSeeData = permissions.includes('*') || ['data.view','data.manage','data.propose','data.approve'].some((permission) => permissions.includes(permission));
	const canManageData = permissions.includes('*') || permissions.includes('data.manage');
	const canProposeData = permissions.includes('*') || permissions.includes('data.propose');
	const canApproveData = permissions.includes('*') || permissions.includes('data.approve');
	const canReviewAvatars = permissions.includes('*') || permissions.includes('avatars.review');
	const canReviewCommunity = permissions.includes('*')
		|| permissions.includes('community.comments.moderate')
		|| permissions.includes('community.profiles.moderate');
	const contributorMode = !canManageData && canProposeData ? await getContributorMode(user.id) : null;
	const database = canSeeData || canReviewAvatars || canReviewCommunity ? await getDatabase() : null;
	const pendingRows = canSeeData
		? await (await database!.prepare("SELECT module,COUNT(*) AS count FROM data_change_proposals WHERE status='pending' GROUP BY module")).all()
		: [];
	const pendingProposalTotal = pendingRows.reduce((total, row) => total + Number(row.count), 0);
	const pendingAvatarReviews = canReviewAvatars
		? Number((await (await database!.prepare("SELECT COUNT(*) AS count FROM avatar_reviews WHERE status='pending'")).get())?.count ?? 0)
		: 0;
	const canReviewComments = permissions.includes('*') || permissions.includes('community.comments.moderate');
	const canReviewProfiles = permissions.includes('*') || permissions.includes('community.profiles.moderate');
	const communityReviewTypes = [
		...(canReviewComments ? ['comment', 'guide'] : []),
		...(canReviewProfiles ? ['profile_bio'] : [])
	];
	const communityTypePlaceholders = communityReviewTypes.map(() => '?').join(',');
	const pendingCommunityReviews = canReviewCommunity && communityReviewTypes.length
		? Number((await (await database!.prepare(`SELECT
				(SELECT COUNT(*) FROM content_moderation_scans scan
				 WHERE scan.content_type IN (${communityTypePlaceholders})
					AND scan.status IN ('review','priority_review','error')
					AND NOT EXISTS(SELECT 1 FROM content_moderation_reviews review WHERE review.scan_id=scan.id))
				+
				(SELECT COUNT(*) FROM user_content_reports
				 WHERE content_type IN (${communityTypePlaceholders}) AND status='pending') AS count`))
			.get(...communityReviewTypes, ...communityReviewTypes))?.count ?? 0)
		: 0;
	const configuredBuildNumber = process.env.SHD_BUILD_NUMBER?.trim() || '0';
	const buildNumber = /^\d+$/.test(configuredBuildNumber) ? configuredBuildNumber : '0';
	return {
		permissions,
		contributorMode,
		buildNumber,
		pendingProposals: Object.fromEntries(pendingRows.map((row) => [String(row.module), Number(row.count)])),
		oversightReviewCounts: {
			data: canApproveData ? pendingProposalTotal : 0,
			avatars: pendingAvatarReviews,
			community: pendingCommunityReviews
		}
	};
};