import {z} from 'zod'

export type CheckoutId = string;

export type GetApiV2CheckoutsCheckoutIdArgs = {checkout_id: CheckoutId};

export type GetApiV2CheckoutsCheckoutIdOptions = {baseUrl?: string | undefined, OAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const checkoutId = z.string().min(30).max(50);

export const checkoutStatus = z.enum(["initiated", "started", "in_progress", "completed", "failed", "unattempted"]);

export const reference = z.string().min(1).max(50);

export const createdAt = z.string().min(24).max(24);

export const updatedAt = z.string().min(24).max(24);

export const checkoutExpiresAt = z.string().min(24).max(24);

export const checkoutIsExpired = z.boolean();

export const amountMinor = z.number().int();

export const currency = z.string().min(3).max(3);

export const checkoutDescription = z.string().min(1).max(250);

export const checkoutFlow = z.object({next_step: z.object({type: z.literal("redirect"), url: z.string().max(1024)})});

export const paymentMethodType = z.enum(["card", "sepa_direct_debit"]);

export const paymentMethodBase = z.object({type: paymentMethodType});

export const cardScheme = z.enum(["visa", "mastercard"]);

export const cardPaymentMethodDescriptor = z.object({type: paymentMethodType, scheme: cardScheme});

export const paymentMethodDescriptor = z.discriminatedUnion("type", [paymentMethodBase, cardPaymentMethodDescriptor]);

export const cardDynamicDescriptor = z.string().min(1).max(18);

export const checkoutCardPaymentMethodOptions = z.object({dynamic_descriptor: cardDynamicDescriptor});

export const sddRemittanceInfo = z.string().min(1).max(140);

export const checkoutSepaDirectDebitPaymentMethodOptions = z.object({remittance_info: sddRemittanceInfo});

export const checkoutPaymentMethodsOptions = z.object({cards: checkoutCardPaymentMethodOptions.optional(), sepa_direct_debit: checkoutSepaDirectDebitPaymentMethodOptions.optional()});

export const checkoutPaymentMethodsAvailable = z.object({type: z.enum(["default", "explicit"]), available: z.array(paymentMethodDescriptor), options: checkoutPaymentMethodsOptions.optional()});

export const splitsType = z.literal("per_transaction");

export const splitsAccountType = z.enum(["platform", "seller", "other"]);

export const accountId = z.string().min(30).max(50);

export const accountVersion = z.string().min(1).max(50);

export const accountLegalName = z.string().min(1).max(250);

export const splitAmountMinor = z.number().int();

export const splitFixedAmount = z.object({type: z.enum(["fixed", "percentage", "remaining"]), amount: splitAmountMinor});

export const splitPercentageAmountCalculated = z.object({type: z.enum(["fixed", "percentage", "remaining"]), percentage: z.number().gte(0).lte(100).multipleOf(0.1), amount: splitAmountMinor});

export const splitRemainingAmountCalculated = z.object({type: z.enum(["fixed", "percentage", "remaining"]), amount: splitAmountMinor});

export const processingFeeRequest = z.object({percentage: z.number().gte(0).lte(100).multipleOf(0.1)});

export const splitsCalculated = z.object({type: splitsType, accounts: z.array(z.object({type: splitsAccountType, id: accountId, version: accountVersion, legal_name: accountLegalName, split: z.discriminatedUnion("type", [splitFixedAmount, splitPercentageAmountCalculated, splitRemainingAmountCalculated]), processing_fee: processingFeeRequest}))});

export const standingInstructionStatus = z.enum(["new", "active"]);

export const standingInstructionTerms = z.object({type: z.enum(["recurring", "unscheduled"])});

export const newStandingInstruction = z.object({status: standingInstructionStatus, terms: standingInstructionTerms});

export const index = z.number().int().gte(0);

export const paymentId = z.string().min(30).max(50);

export const paymentStatusPhase = z.enum(["in_progress", "succeeded", "failed"]);

export const checkoutPayments = z.array(z.object({index: index, id: paymentId, status: paymentStatusPhase, created_at: createdAt, updated_at: updatedAt, method: z.object({type: paymentMethodType, scheme: cardScheme.optional(), display_hint: z.string().max(50)})}));

export const themeId = z.string().min(30).max(50);

export const checkoutInitiatedStarted = z.object({id: checkoutId, status: checkoutStatus, reference: reference, created_at: createdAt, updated_at: updatedAt, expires_at: checkoutExpiresAt, is_expired: checkoutIsExpired, amount: amountMinor, currency: currency, description: checkoutDescription.optional(), flow: checkoutFlow, payment_methods: checkoutPaymentMethodsAvailable, splits: splitsCalculated, standing_instruction: newStandingInstruction.optional(), payments: checkoutPayments, theme: z.object({id: themeId, name: z.string().min(1).max(250)})});

export const checkoutPaymentMethodsWithSelected = z.object({type: z.enum(["default", "explicit"]), selected: paymentMethodDescriptor, available: z.array(paymentMethodDescriptor), options: checkoutPaymentMethodsOptions.optional()});

export const checkoutInProgress = z.object({id: checkoutId, status: checkoutStatus, reference: reference, created_at: createdAt, updated_at: updatedAt, expires_at: checkoutExpiresAt, is_expired: checkoutIsExpired, amount: amountMinor, currency: currency, description: checkoutDescription.optional(), flow: checkoutFlow, payment_methods: checkoutPaymentMethodsWithSelected, splits: splitsCalculated, standing_instruction: newStandingInstruction.optional(), payments: checkoutPayments, theme: z.object({id: themeId, name: z.string().min(1).max(250)})});

export const processingFeeAmount = z.number().int();

export const processingFeeCalculated = z.object({percentage: z.number().gte(0).lte(100).multipleOf(0.1), amount: processingFeeAmount});

export const splitsAndFeesCalculated = z.object({type: splitsType, accounts: z.array(z.object({type: splitsAccountType, id: accountId, version: accountVersion, legal_name: accountLegalName, split: z.discriminatedUnion("type", [splitFixedAmount, splitPercentageAmountCalculated, splitRemainingAmountCalculated]), processing_fee: processingFeeCalculated}))});

export const standingInstructionId = z.string().min(30).max(50);

export const activeStandingInstruction = z.object({id: standingInstructionId, status: standingInstructionStatus, terms: standingInstructionTerms});

export const checkoutCompleted = z.object({id: checkoutId, status: checkoutStatus, reference: reference, created_at: createdAt, updated_at: updatedAt, expires_at: checkoutExpiresAt, is_expired: checkoutIsExpired, amount: amountMinor, currency: currency, description: checkoutDescription.optional(), payment_methods: checkoutPaymentMethodsWithSelected, splits: splitsAndFeesCalculated, standing_instruction: activeStandingInstruction.optional(), payments: checkoutPayments, theme: z.object({id: themeId, name: z.string().min(1).max(250)})});

export const checkoutFailed = z.object({id: checkoutId, status: checkoutStatus, reference: reference, created_at: createdAt, updated_at: updatedAt, expires_at: checkoutExpiresAt, is_expired: checkoutIsExpired, amount: amountMinor, currency: currency, description: checkoutDescription.optional(), payment_methods: checkoutPaymentMethodsAvailable, splits: splitsCalculated, standing_instruction: newStandingInstruction.optional(), payments: checkoutPayments, theme: z.object({id: themeId, name: z.string().min(1).max(250)})});

export const checkoutUnattempted = z.object({id: checkoutId, status: checkoutStatus, reference: reference, created_at: createdAt, updated_at: updatedAt, expires_at: checkoutExpiresAt, is_expired: checkoutIsExpired, amount: amountMinor, currency: currency, description: checkoutDescription.optional(), payment_methods: checkoutPaymentMethodsAvailable, splits: splitsCalculated, standing_instruction: newStandingInstruction.optional(), payments: checkoutPayments, theme: z.object({id: themeId, name: z.string().min(1).max(250)})});

export const getCheckoutResponse = z.discriminatedUnion("status", [checkoutInitiatedStarted, checkoutInProgress, checkoutCompleted, checkoutFailed, checkoutUnattempted]);

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Get a checkout
 * 
 * GET /v2/checkouts/{checkout_id}
 * 
 * Also accepts auth: OAuth
 */
export const getApiV2CheckoutsCheckoutId = async (args: GetApiV2CheckoutsCheckoutIdArgs, options?: GetApiV2CheckoutsCheckoutIdOptions) => {
const {baseUrl = "https://api.getpaid.io", fetch: fetchFn = fetch, OAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (OAuth !== undefined) headers.set('authorization', `Bearer ${OAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/checkouts/${encodeURIComponent(String(args.checkout_id))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getCheckoutResponse, await res.json())
};