/* @flow */

import { combineReducers } from 'redux'
import type {
	Action as CompanyStatusAction,
	CompanyLegalStatus,
	State
} from 'Types/companyStatusTypes'
import type {
	Action as CreationChecklistAction,
} from 'Types/companyCreationChecklistTypes'
import type {
	Action as HiringChecklist,
} from 'Types/hiringChecklistTypes'
type Action = CompanyStatusAction | CreationChecklistAction | HiringChecklist

function companyLegalStatus(
	state: CompanyLegalStatus = {},
	action: Action
): CompanyLegalStatus {
	switch (action.type) {
		case 'CHOOSE_COMPANY_LEGAL_SETUP':
			return { ...state, liability: action.setup }

		case 'DEFINE_DIRECTOR_STATUS':
			return { ...state, directorStatus: action.status }
		case 'COMPANY_HAVE_MULTIPLE_ASSOCIATES':
			return { ...state, multipleAssociates: action.multipleAssociates }
		case 'COMPANY_IS_MICROENTERPRISE':
			return { ...state, microenterprise: action.microenterprise }
		case 'SPECIFY_DIRECTORS_SHARE':
			return { ...state, minorityDirector: action.minorityDirector }
		case 'RESET_COMPANY_STATUS_CHOICE':
			return {}
	}
	return state
}

function hiringChecklist(
	state:  { [string]: boolean } =  {},
	action: Action
) {
	switch (action.type) {
		case 'CHECK_HIRING_ITEM':
			return {
				...state,
				[action.name]: action.checked
			}
		case 'INITIALIZE_HIRING_CHECKLIST':
			return Object.keys(state).length ? state :  action.checklistItems.reduce(
				(checklist, item) => ({...checklist, [item]: false })
			, {});
		default:
			return state
	}
}


function companyCreationChecklist(
	state:  { [string]: boolean } =  {},
	action: Action
) {
	switch (action.type) {
		case 'CHECK_COMPANY_CREATION_ITEM':
			return {
				...state,
				[action.name]: action.checked
			}
		case 'INITIALIZE_COMPANY_CREATION_CHECKLIST':
			return Object.keys(state).length ? state : action.checklistItems.reduce(
					(checklist, item) => ({...checklist, [item]: false })
					, {})	
			;
		case 'RESET_COMPANY_STATUS_CHOICE': 
				return {};
		default:
			return state
	}
}

function companyStatusChoice(
	state: ?string = null,
	action: Action
) {
	if (action.type === 'RESET_COMPANY_STATUS_CHOICE') {
		return null
	}
	if (action.type !== 'INITIALIZE_COMPANY_CREATION_CHECKLIST') {
		return state;
	} 
	return action.statusName
}

function existingCompanyDetails(
	state: ?{ [string]: string } = null,
	action: Action
): ?{ [string]: string } {
	switch (action.type) {
		case 'SAVE_EXISTING_COMPANY_DETAILS':
			return action.details
		default:
			return state
	}
}
// $FlowFixMe
export default (combineReducers({
	companyLegalStatus,
	companyStatusChoice,
	companyCreationChecklist,
	existingCompanyDetails,
	hiringChecklist
}): (State, Action) => State)