import { periodWindow } from '@shared/timezone';
import { pbAdmin } from '$lib/server/pocketbase';
import { evaluateFam } from './bonuses';

// Reads/writes the acting user may not be permitted by PB rules:
// - `fams` view (prod may predate RULE_OWN_FAM; migrate only bootstraps fresh)
// - `assigned_chores` update (parent-only rule, but children claim shared chores)
// Both stay fam-scoped: the fam record id and the chore's own famId are checked.
async function famMetaSU(famId: string) {
	const fam: any = await pbAdmin.getOne('fams', famId);
	const { resolveTz } = await import('@shared/timezone');
	return {
		payday: fam.payday !== undefined && fam.payday !== null ? Number(fam.payday) : 1,
		paydayTime: fam.paydayTime || '18:00',
		tz: resolveTz(fam.timezone || 'auto')
	};
}

async function claimChore(assignedChoreId: string, famId: string, memberId: string | '') {
	const chore: any = await pbAdmin.getOne('assigned_chores', assignedChoreId);
	if (!chore || chore.famId !== famId) throw new Error('Chore not found');
	await pbAdmin.update('assigned_chores', assignedChoreId, { memberId });
}

export async function myChores(pb: any, famId: string, memberId: string) {
	const [templates, assigned, completions, rewards, bonusConfigs] = await Promise.all([
		pb.collection('chore_templates').getFullList({ filter: `famId = '${famId}'` }),
		pb.collection('assigned_chores').getFullList({
			filter: `famId = '${famId}' && (memberId = '${memberId}' || memberId = '')`
		}),
		pb.collection('completions').getFullList({ filter: `famId = '${famId}' && memberId = '${memberId}'` }),
		pb.collection('rewards').getFullList({ filter: `famId = '${famId}' && memberId = '${memberId}'` }),
		pb.collection('bonus_configs').getFullList({ filter: `famId = '${famId}' && status = 'active'` })
	]);
	const { payday, paydayTime, tz } = await famMetaSU(famId);
	return {
		templates,
		assigned,
		completions,
		rewards,
		bonusConfigs,
		payday,
		paydayTime,
		timezone: tz
	};
}

export async function toggle(pb: any, famId: string, memberId: string, body: { assignedChoreId: string; date: string }) {
	const { assignedChoreId, date } = body;
	if (!assignedChoreId || !date) throw new Error('assignedChoreId and date required');

	const choreList = await pb
		.collection('assigned_chores')
		.getFullList({ filter: `famId = '${famId}' && id = '${assignedChoreId}'` });
	const chore = choreList?.[0];
	const isTodo = chore?.isTodo;
	const isShared = chore?.shared === true || !chore?.memberId;

	let filter: string;
	if (isShared && !isTodo) {
		// Shared non-todo: any completion in the period = already claimed
		const { payday, tz } = await famMetaSU(famId);
		const { from, to } = periodWindow(chore?.frequency, payday, tz);
		filter = `assignedChoreId = '${assignedChoreId}' && date >= '${from}' && date < '${to}'`;
	} else if (isTodo) {
		filter = `assignedChoreId = '${assignedChoreId}' && memberId = '${memberId}'`;
	} else {
		const { payday, tz } = await famMetaSU(famId);
		const { from, to } = periodWindow(chore?.frequency, payday, tz);
		filter = `assignedChoreId = '${assignedChoreId}' && memberId = '${memberId}' && date >= '${from}' && date < '${to}'`;
	}
	const existing = await pb
		.collection('completions')
		.getFullList({ filter });
	if (existing?.length > 0) {
		await pb.collection('completions').delete(existing[0].id);
		// Un-completing a cash todo removes its one-time reward.
		if (isTodo && existing[0].rewardId) {
			await pb.collection('rewards').delete(existing[0].rewardId).catch(() => {});
		}
		// If this was a shared chore claimed by this member, un-share it
		if (isShared && existing[0].memberId === memberId) {
			await claimChore(assignedChoreId, famId, '');
		}
		evaluateFam(pb, famId).catch(() => {});
		return { completed: false };
	}
	let rewardId: string | undefined;
	if (isTodo && chore?.type === 'money' && Number(chore.value) > 0) {
		const reward = await pb.collection('rewards').create({
			famId,
			memberId,
			label: chore.customName || 'Cash todo',
			value: Number(chore.value),
			rewardType: 'cash',
			status: 'unclaimed',
			claimable: 'payday',
			date
		});
		rewardId = reward.id;
	}
	const record = await pb.collection('completions').create({
		famId,
		memberId,
		assignedChoreId,
		date,
		completedAt: new Date().toISOString(),
		...(rewardId ? { rewardId } : {})
	});
	// Claim the shared chore by setting memberId
	if (isShared) {
		await claimChore(assignedChoreId, famId, memberId);
	}
	evaluateFam(pb, famId).catch(() => {});
	return { completed: true, record };
}

export async function revoke(pb: any, famId: string, completionId: string) {
	const completions = await pb
		.collection('completions')
		.getFullList({ filter: `famId = '${famId}' && id = '${completionId}'` });
	if (!completions?.length) throw new Error('Completion not found');
	const completion = completions[0];
	await pb.collection('completions').delete(completionId);
	// If this was a shared chore, clear memberId to make it available again
	const choreList = await pb.collection('assigned_chores')
		.getFullList({ filter: `famId = '${famId}' && id = '${completion.assignedChoreId}'` });
	const chore = choreList?.[0];
	if (chore?.shared === true) {
		await claimChore(chore.id, famId, '');
	}
	evaluateFam(pb, famId).catch(() => {});
	return { revoked: true };
}