/**
 * WordPress dependencies
 */
import { useSelect } from '@safe-wordpress/data';
import { createInterpolateElement } from '@safe-wordpress/element';
import { sprintf, _x } from '@safe-wordpress/i18n';

/**
 * External dependencies
 */
import { ConversionActionScopeView } from '@nab/components';
import { store as NAB_DATA } from '@nab/data';
import type {
	CAViewProps,
	ConversionActionScope,
	EntityKindName,
} from '@nab/types';

/**
 * Internal dependencies
 */
import { isNamedForm } from './helpers';
import type { Attributes } from './types';

export const View = ( props: CAViewProps< Attributes > ): JSX.Element => (
	<>
		<div>
			<ActualView { ...props } />
		</div>
		<ConversionActionScopeView scope={ props.scope } />
	</>
);

const ActualView = ( {
	attributes,
	scope,
}: CAViewProps< Attributes > ): JSX.Element => {
	const formTitle = useFormTitle( attributes );
	const formPluginName = useFormPluginName( attributes );

	if ( ! formTitle ) {
		return <>{ getLabelForUnknownForm( scope, formPluginName ) }</>;
	}

	return (
		<>
			{ createInterpolateElement(
				sprintf(
					getLabelForKnownForm( scope, formPluginName ),
					`<strong>${ formTitle }</strong>`
				),
				{ strong: <strong /> }
			) }
		</>
	);
};

// =====
// HOOKS
// =====

const useFormTitle = ( attributes: Attributes ): string =>
	useSelect(
		( select ) => {
			select( NAB_DATA );
			const name = isNamedForm( attributes )
				? attributes.formName
				: select( NAB_DATA ).getEntityRecord(
						attributes.formType,
						attributes.formId
				  )?.title;
			return name || '';
		},
		[ attributes ]
	);

const FORM_PLUGIN_NAMES: Record< EntityKindName, string > = {
	nelio_form: 'Nelio Forms',
	wpcf7_contact_form: 'Contact Forms 7',
	nab_elementor_form: 'Elementor',
	nab_hubspot_form: 'HubSpot',
	nab_gravity_form: 'Gravity Forms',
	nab_ninja_form: 'Ninja Forms',
	nab_formidable_form: 'Formidable Forms',
	sureforms_form: 'SureForms',
	wpforms: 'WPForms',
	'jet-form-builder': 'JetFormBuilder',
	'metform-form': 'MetForm',
	'mw-wp-form': 'MW WP Form',
	nab_forminator_form: 'Forminator Forms',
	nab_fluent_form: 'Fluent Forms',
	nab_formcraft_form: 'FormCraft',
};

const useFormPluginName = ( { formType }: Attributes ): string =>
	useSelect(
		( select ): string => {
			const multi =
				select( NAB_DATA )
					.getKindEntities()
					.filter( ( e ) => e.kind === 'form' ).length > 1;
			return multi ? FORM_PLUGIN_NAMES[ formType ] ?? '' : '';
		},
		[ formType ]
	);

// =======
// HELPERS
// =======

function getLabelForKnownForm(
	scope: ConversionActionScope,
	plugin: string
): string {
	switch ( scope.type ) {
		case 'all-pages':
			return plugin
				? sprintf(
						/* translators: %1$s: Form name. %2$s: Form plugin name. */
						_x(
							'A visitor successfully submits the %1$s form (%2$s) on any page.',
							'text',
							'nelio-ab-testing'
						),
						'%s',
						plugin
				  )
				: /* translators: %s: Form name. */
				  _x(
						'A visitor successfully submits the %s form on any page.',
						'text',
						'nelio-ab-testing'
				  );

		case 'test-scope':
			return plugin
				? sprintf(
						/* translators: %1$s: Form name. %2$s: Form plugin name. */
						_x(
							'A visitor successfully submits the %1$s form (%2$s) on a tested page.',
							'text',
							'nelio-ab-testing'
						),
						'%s',
						plugin
				  )
				: /* translators: %s: Form name. */
				  _x(
						'A visitor successfully submits the %s form on a tested page.',
						'text',
						'nelio-ab-testing'
				  );

		case 'urls':
		case 'post-ids':
		case 'php-function':
			return plugin
				? sprintf(
						/* translators: %1$s: Form name. %2$s: Form plugin name. */
						_x(
							'A visitor successfully submits the %1$s form (%2$s) on certain pages.',
							'text',
							'nelio-ab-testing'
						),
						'%s',
						plugin
				  )
				: /* translators: %s: Form name. */
				  _x(
						'A visitor successfully submits the %s form on certain pages.',
						'text',
						'nelio-ab-testing'
				  );
	}
}

function getLabelForUnknownForm(
	scope: ConversionActionScope,
	plugin: string
): string {
	switch ( scope.type ) {
		case 'all-pages':
			return plugin
				? sprintf(
						/* translators: %s: Form plugin name. */
						_x(
							'A visitor successfully submits a specific form (%s) on any page.',
							'text',
							'nelio-ab-testing'
						),
						plugin
				  )
				: _x(
						'A visitor successfully submits a specific form on any page.',
						'text',
						'nelio-ab-testing'
				  );

		case 'test-scope':
			return plugin
				? sprintf(
						/* translators: %s: Form plugin name. */
						_x(
							'A visitor successfully submits a specific form (%s) on a tested page.',
							'text',
							'nelio-ab-testing'
						),
						plugin
				  )
				: _x(
						'A visitor successfully submits a specific form on a tested page.',
						'text',
						'nelio-ab-testing'
				  );

		case 'urls':
		case 'post-ids':
		case 'php-function':
			return plugin
				? sprintf(
						/* translators: %s: Form plugin name. */
						_x(
							'A visitor successfully submits a specific form (%s) on certain pages.',
							'text',
							'nelio-ab-testing'
						),
						plugin
				  )
				: _x(
						'A visitor successfully submits a specific form on certain pages.',
						'text',
						'nelio-ab-testing'
				  );
	}
}