import { componentInterface, includeComponent } from '../../factory';
import { mostFrequentValuesInArrayOfDictionaries } from '../../utils/getMostFrequent';
import { options } from '../../fingerprint/options';

let permission_keys: PermissionName[];
function initializePermissionKeys() {
    permission_keys = options?.permissions_to_check || [
        'accelerometer',
        'accessibility', 'accessibility-events',
        'ambient-light-sensor',
        'background-fetch', 'background-sync', 'bluetooth',
        'camera',
        'clipboard-read',
        'clipboard-write',
        'device-info', 'display-capture',
        'gyroscope', 'geolocation',
        'local-fonts',
        'magnetometer', 'microphone', 'midi',
        'nfc', 'notifications',
        'payment-handler',
        'persistent-storage',
        'push',
        'speaker', 'storage-access',
        'top-level-storage-access',
        'window-management',
        'query',
    ] as PermissionName[];
}

export default async function getBrowserPermissions(): Promise<componentInterface> {
    initializePermissionKeys();
    const permissionPromises: Promise<componentInterface>[] = Array.from({length: options?.retries || 3}, () => getBrowserPermissionsOnce() );
    return Promise.all(permissionPromises).then((resolvedPermissions) => {
        const permission = mostFrequentValuesInArrayOfDictionaries(resolvedPermissions, permission_keys);
        return permission;
    });
}

async function getBrowserPermissionsOnce(): Promise<componentInterface> {

    const permissionStatus: { [key: string]: string } = {};

    for (const feature of permission_keys) {
        try {
            // Request permission status for each feature
            const status = await navigator.permissions.query({ name: feature });

            // Assign permission status to the object
            permissionStatus[feature] = status.state.toString();
        } catch (error) {
            // In case of errors (unsupported features, etc.), do nothing. Not listing them is the same as not supported
        }
    }

    return permissionStatus;
}

includeComponent("permissions", getBrowserPermissions);