import {
	buildPayoutBody,
	mutationPreview,
	normalizePayoutSummary,
	type MutationGuardInput,
	type PayPalAuthInput,
	type PayoutItemInput,
	type PayoutRecipientType,
} from './paypal-helpers.ts'
import { paypalCreatePayout, paypalGetPayout, paypalGetPayoutItem } from './paypal-core.ts'

export type { PayoutItemInput, PayoutRecipientType }

export type CreatePayoutInput = MutationGuardInput & {
	receiver?: string
	amount?: string | number
	currencyCode?: string
	recipientType?: PayoutRecipientType
	note?: string
	emailSubject?: string
	emailMessage?: string
	senderBatchId?: string
	senderItemId?: string
	recipientWallet?: 'PAYPAL' | 'VENMO'
	items?: Array<PayoutItemInput>
	requestId?: string
	includeRaw?: boolean
}

export type GetPayoutInput = PayPalAuthInput & {
	id: string
	includeRaw?: boolean
}

export type GetPayoutItemInput = PayPalAuthInput & {
	itemId: string
	includeRaw?: boolean
}

export { buildPayoutBody, buildPayoutItem } from './paypal-helpers.ts'

/**
 * Create a PayPal Payouts batch (reimbursement / mass pay).
 * Pass `dryRun: true` to preview. Live send requires `confirm: true`.
 */
export async function createPayout(input: CreatePayoutInput) {
	const body = buildPayoutBody(input)
	const preview = mutationPreview(input, {
		action: 'create payout batch',
		method: 'POST',
		path: '/v1/payments/payouts',
		body,
		requireConfirm: true,
	})
	if (preview) return preview
	const raw = await paypalCreatePayout({ ...input, body, requestId: input.requestId })
	const summary = normalizePayoutSummary(raw)
	return input.includeRaw ? { summary, raw } : summary
}

/**
 * Read one payout batch by payout_batch_id.
 */
export async function getPayout(input: GetPayoutInput) {
	if (!input.id) throw new Error('getPayout requires id.')
	const raw = await paypalGetPayout({ ...input, payoutBatchId: input.id })
	const summary = normalizePayoutSummary(raw)
	return input.includeRaw ? { summary, raw } : summary
}

/**
 * Read one payout item by payout_item_id.
 */
export async function getPayoutItem(input: GetPayoutItemInput) {
	if (!input.itemId) throw new Error('getPayoutItem requires itemId.')
	const raw = await paypalGetPayoutItem({ ...input, payoutItemId: input.itemId })
	return input.includeRaw ? { raw } : raw
}

export default async function payouts(input: CreatePayoutInput) {
	return await createPayout(input)
}