import {z} from 'zod'

export type GetApiV2DatabasesArgs = {search?: (string | null) | undefined, page: number, per_page?: number | undefined};

export type GetApiV2DatabasesOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const databaseId = z.string();

export const possibleRegion = z.enum(["AMS", "ASB", "AT", "BE", "BO", "BR", "BU", "CA", "CO", "CZ", "DE", "DEN", "DK", "ES", "FR", "GA", "GR", "HK", "HR", "ID", "IL", "ISR", "IT", "JH", "JP", "LA", "MI", "MX", "MY", "NG", "NY", "PH", "PL", "SE", "SG", "SIL", "SYD", "TH", "TR", "TX", "UK", "WA"]);

export const database2 = z.object({name: z.string(), id: databaseId, url: z.string(), block_reads: z.boolean(), block_writes: z.boolean(), size_max: z.string(), current_size: z.string(), size_max_bytes: z.number().int().gte(0), current_size_bytes: z.number().int().gte(0), storage_region: z.string(), primary_regions: z.array(possibleRegion), replicas_regions: z.array(possibleRegion)});

export const databaseV2PageInfo = z.object({current_page: z.number().int(), total_items: z.number().int(), has_more_items: z.boolean()});

export const listDatabaseV2Response = z.object({databases: z.array(database2), page_info: databaseV2PageInfo});

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
 * 
 * GET /v2/databases
 * 
 * Also accepts auth: AccessKey
 */
export const getApiV2Databases = async (args: GetApiV2DatabasesArgs, options?: GetApiV2DatabasesOptions) => {
const {baseUrl = "https://api.bunny.net/database", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.search != null) query.append("search", String(args.search))
if (args.page != null) query.append("page", String(args.page))
if (args.per_page != null) query.append("per_page", String(args.per_page))
if (Bearer !== undefined) headers.set("Authorization", Bearer)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/databases${query.size > 0 ? `?${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(listDatabaseV2Response, await res.json())
};