import { useEffect, useState } from 'react';
import type { InvestmentMapArea } from './interactive-investment-map';

export type TerritoryGeometryContext = {
    selected_geometry_available: boolean;
    context_geometry_count: number;
    areas: InvestmentMapArea[];
    truncated: boolean;
    child_coverage?: {
        location_type: string | null;
        registered_count: number;
        represented_count: number;
        reference_limit: number;
        geometry_limit: number;
    } | null;
};

export function useTerritoryGeometry(
    territoryId?: string,
    endpoint = '/api/v1/investment/territory-geometries',
    includeChildren = false,
) {
    const key = JSON.stringify([territoryId, endpoint, includeChildren]);
    const [result, setResult] = useState<{
        key: string;
        context: TerritoryGeometryContext | null;
        error: string;
    }>({ key, context: null, error: '' });
    useEffect(() => {
        const controller = new AbortController();
        setResult({ key, context: null, error: '' });
        if (!territoryId) return () => controller.abort();
        void fetch(
            `${endpoint}?${new URLSearchParams({ territory_id: territoryId, ...(includeChildren ? { include_children: '1' } : {}) })}`,
            {
                signal: controller.signal,
                headers: { Accept: 'application/json' },
            },
        )
            .then(async (response) => {
                if (!response.ok)
                    throw new Error(
                        'Não foi possível consultar os limites administrativos.',
                    );
                return response.json() as Promise<TerritoryGeometryContext>;
            })
            .then((context) => {
                if (!controller.signal.aborted)
                    setResult({ key, context, error: '' });
            })
            .catch((error: unknown) => {
                if (!controller.signal.aborted)
                    setResult({
                        key,
                        context: null,
                        error:
                            error instanceof Error
                                ? error.message
                                : 'Erro de ligação.',
                    });
            });
        return () => controller.abort();
    }, [key, territoryId, endpoint, includeChildren]);
    return result.key === key ? result : { key, context: null, error: '' };
}