import { db } from '$lib/server/db';
import { character, devilFruit, arc, type Status } from '$lib/server/db/schema';
import { eq, sql } from 'drizzle-orm';
import { fail } from '@sveltejs/kit';
import type { PageServerLoad, Actions } from './$types';

// Helper function to normalize data (parse JSON arrays)
const normalizeArray = (value: any): any => {
	if (!value) return value;
	if (Array.isArray(value)) return value;
	if (typeof value === 'string' && value.includes('[')) {
		try {
			return JSON.parse(value);
		} catch {
			return value;
		}
	}
	return value;
};

export const load: PageServerLoad = async () => {
	let [characters, devilFruits, arcs, statusesData, gendersData] = await Promise.all([
		db
			.select({
				id: character.id,
				name: character.name,
				gender: character.gender,
				age: character.age,
				affiliations: normalizeArray(character.affiliations),
				devilFruitId: character.devilFruitId,
				hakiObservation: character.hakiObservation,
				hakiArmament: character.hakiArmament,
				hakiConqueror: character.hakiConqueror,
				bounty: character.bounty,
				height: character.height,
				origin: character.origin,
				firstAppearance: character.firstAppearance,
				pictureUrl: character.pictureUrl,
				epithets: normalizeArray(character.epithets),
				status: character.status,
				url: character.url,
				arcId: character.arcId,
				isInDailyMode: character.isInDailyMode,
				arcName: arc.name,
				devilFruitName: devilFruit.name,
				devilFruitType: devilFruit.type
			})
			.from(character)
			.leftJoin(arc, eq(character.arcId, arc.id))
			.leftJoin(devilFruit, eq(character.devilFruitId, devilFruit.id))
			.orderBy(character.name),
		db.select().from(devilFruit).orderBy(devilFruit.name),
		db.select().from(arc).orderBy(arc.name),
		db.selectDistinct({ status: character.status })
			.from(character)
			.where(sql`${character.status} IS NOT NULL AND ${character.status} != ''`),
		db.selectDistinct({ gender: character.gender })
			.from(character)
			.where(sql`${character.gender} IS NOT NULL AND ${character.gender} != ''`)
	]);

	return {
		characters,
		devilFruits,
		arcs,
		availableStatuses: statusesData
			.map(s => s.status)
			.filter((s): s is Status => !!s)
			.sort((a, b) => a.localeCompare(b)),
		availableGenders: gendersData
			.map(g => g.gender)
			.filter((g): g is string => !!g)
			.sort((a, b) => a.localeCompare(b))
	};
};

export const actions: Actions = {
	delete: async ({ request, locals }) => {
		if (!locals.user?.isAdmin) {
			return fail(401, { error: 'Unauthorized' });
		}

		const formData = await request.formData();
		const id = formData.get('id') as string;

		if (!id) {
			return fail(400, { error: 'Character ID is required' });
		}

		try {
			await db.delete(character).where(eq(character.id, id));
			return { success: true };
		} catch (error) {
			console.error('Character delete error:', error);
			return fail(500, { error: 'Failed to delete character' });
		}
	},

	toggleDailyMode: async ({ request, locals }) => {
		if (!locals.user?.isAdmin) {
			return fail(401, { error: 'Unauthorized' });
		}

		const formData = await request.formData();
		const id = formData.get('id') as string;
		const isInDailyMode = formData.get('isInDailyMode') === 'true';

		if (!id) {
			return fail(400, { error: 'Character ID is required' });
		}

		try {
			await db.update(character)
				.set({ isInDailyMode })
				.where(eq(character.id, id));

			return { success: true };
		} catch (error) {
			console.error('Toggle daily mode error:', error);
			return fail(500, { error: 'Failed to toggle daily mode' });
		}
	}
};