import {z} from 'zod'

export type BillingChargeFixedAmountRequestCreate = {patient: string, appointment: string, amount: number, type: 'copay' | 'balance' | 'custom-appointment-charge' | 'convenience-fee', source: 'manual' | 'integrator' | 'insurance-verification' | 'ai-suggestions' | 'fixedAmount', status: 'planned' | 'billable' | 'billed' | 'aborted', fixedCopayData?: ({payer?: string | undefined, provider?: string | undefined, appointmentType?: string | undefined, providerType?: ('Specialist' | 'PCP') | undefined, customActionId?: string | undefined}) | undefined};

export type CreateApiBillingChargesArgs = {body: BillingChargeFixedAmountRequestCreate};

export type CreateApiBillingChargesOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

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

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

export const deletedParam = z.union([z.literal(0), z.literal(1)]);

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

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

export const createdAtParam = z.string();

export const updatedAtParam = z.string();

export const billingChargeResponse = z.object({_id: idParam.optional(), user: userParam.optional(), deleted: deletedParam.optional(), createdBy: createdByParam.optional(), updatedBy: updatedByParam.optional(), createdAt: createdAtParam.optional(), updatedAt: updatedAtParam.optional(), amount: z.number().optional(), currency: z.string().optional(), status: z.enum(["planned", "billable", "billed", "aborted"]).optional(), lastStatusUpdatedAt: z.string().optional(), lastStatusUpdatedBy: z.string().min(24).max(24).optional(), type: z.enum(["copay", "balance", "custom-appointment-charge", "convenience-fee"]).optional(), source: z.enum(["manual", "integrator", "insurance-verification", "fixedAmount"]).optional(), description: z.string().optional(), reason: z.string().optional(), appointment: z.string().min(24).max(24).optional(), patient: z.string().min(24).max(24).optional(), insuranceVerification: z.string().min(24).max(24).optional(), insurance: z.string().min(24).max(24).optional(), paymentStatus: z.enum(["pending", "not-paid", "paid", "partially-paid", "refunded"]).optional(), amountPaid: z.number().optional(), billingTransactions: z.array(z.string().min(24).max(24)).optional(), isCreatedByAI: z.boolean().optional(), discountResolution: z.object({effectiveAmount: z.number().optional(), originalAmount: z.number().optional(), isDiscountApplied: z.boolean().optional(), percentage: z.number().optional(), windowEndsAt: z.string().nullable().optional(), reason: z.string().optional()}).optional(), hasDiscount: z.boolean().optional()});

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
};

/**
 * Create a fixed-amount billing charge
 * 
 * POST /billingCharges
 */
export const createApiBillingCharges = async (args: CreateApiBillingChargesArgs, options?: CreateApiBillingChargesOptions) => {
const {baseUrl = "https://api.lumahealth.io/api/v2", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/billingCharges${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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