import {z} from 'zod'

export type GetApiApiV1BillingReceiptsArgs = {page?: number | undefined, limit?: number | undefined};

export type GetApiApiV1BillingReceiptsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const receiptListEntry = z.object({id: z.string(), periodStart: z.string(), periodEnd: z.string(), status: z.enum(["open", "reconciling", "ready", "closing", "closed", "failed"]), totals: z.object({inputTokensUncached: z.string(), inputTokensCached: z.string(), inputTokensCacheCreation: z.string(), outputTokens: z.string(), requestCount: z.string(), providerCostUsd: z.number(), carbonKg: z.number(), electricityKwh: z.number()}), factorsVersions: z.array(z.string()), planTierAtClose: z.enum(["free", "starter", "growth", "scale", "enterprise", "payg"]).nullable(), closedAt: z.string().nullable(), createdAt: z.string(), stripeInvoiceId: z.string().nullable(), amountChargedCents: z.number().int().nullable(), failureReason: z.enum(["payment_failed", "aggregation_failed", "signing_failed"]).nullable(), paidAt: z.string().nullable(), readyAt: z.string().nullable(), closingAt: z.string().nullable(), carbonReceiptId: z.string().nullable(), statementId: z.string().nullable(), statementStatus: z.enum(["pending", "signing", "signed", "failed", "unavailable"]).nullable(), receipt: z.object({id: z.string(), co2Kg: z.number(), serialAllocations: z.array(z.object({serialNumber: z.string(), totalKgCo2e: z.number()})), verificationUrl: z.string(), previewUrl: z.string().nullable(), pdfUrl: z.string().nullable(), isSigned: z.boolean(), signedAt: z.string().nullable(), createdAt: z.string()}).nullable()});

export const paginationMeta = z.object({page: z.number().int().gte(0), limit: z.number().int().gt(0), total: z.number().int().gte(0), totalPages: z.number().int().gte(0)});

export const getApiApiV1BillingReceiptsResponse = z.object({success: z.literal(true), data: z.array(receiptListEntry), pagination: paginationMeta});

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
};

/**
 * List billing periods with their carbon receipt and statement
 * 
 * GET /api/v1/billing/receipts
 * 
 * Also accepts auth: apiKey
 */
export const getApiApiV1BillingReceipts = async (args: GetApiApiV1BillingReceiptsArgs, options?: GetApiApiV1BillingReceiptsOptions) => {
const {baseUrl = "https://api.crbonfree.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.limit != null) query.append("limit", String(args.limit))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/billing/receipts${query.size > 0 ? `?${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(getApiApiV1BillingReceiptsResponse, await res.json())
};