/**
 * External dependencies
 */
import type {
	FinishedExperimentSummary,
	Maybe,
	Opportunity,
	OptimizationScore,
	PendingExperimentSummary,
	RunningExperimentSummary,
} from '@nab/types';

/**
 * Internal dependencies
 */
import type { State } from '../types';
import { INIT_STATE } from '../config';

export function hasEverCreatedExperiments( state: State ): boolean {
	return state.recommendationEngine.experiments.exist;
}

export function getRecommendationEngineState(
	state: State
): State[ 'recommendationEngine' ] {
	return state.recommendationEngine;
}

export function isRecommendationEngineDataLoaded( state: State ): boolean {
	const currentScore = state.recommendationEngine.score;
	return currentScore !== INIT_STATE.recommendationEngine.score;
}

export function getOptimizationScore( state: State ): OptimizationScore {
	return state.recommendationEngine.score;
}

export function getOpportunities( state: State ): ReadonlyArray< Opportunity > {
	return state.recommendationEngine.opportunities;
}

export function getOpportunityBeingInstantiated(
	state: State
): Maybe< Opportunity > {
	return state.recommendationEngine.instantiatingOpportunity;
}

export function getRecentlyFinishedExperimentCount( state: State ): number {
	return state.recommendationEngine.experiments.recentCount;
}

export function getRecentlyFinishedExperimentSummaries(
	state: State
): ReadonlyArray< FinishedExperimentSummary > {
	return state.recommendationEngine.experiments.recentSummaries;
}

export function getRunningExperimentCount( state: State ): number {
	return state.recommendationEngine.experiments.runningCount;
}

export function getRunningExperimentSummaries(
	state: State
): ReadonlyArray< RunningExperimentSummary > {
	return state.recommendationEngine.experiments.runningSummaries;
}

export function getPendingExperimentSummaries(
	state: State
): ReadonlyArray< PendingExperimentSummary > {
	return state.recommendationEngine.experiments.pendingSummaries;
}

export function getSuggestionGenerationState(
	state: State
): State[ 'recommendationEngine' ][ 'suggestionGenerationState' ] {
	return state.recommendationEngine.suggestionGenerationState;
}