import {z} from 'zod'

export type GetApiRegistryRegistryNameV01ServersArgs = {registryName: string, q?: string | undefined, page?: number | undefined, limit?: number | undefined};

export type GetApiRegistryRegistryNameV01ServersOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const pkgApiV1PaginationV01Metadata = z.object({limit: z.number().int().optional(), page: z.number().int().optional(), total: z.number().int().optional()});

export const v0ServerMeta = z.object({"io.modelcontextprotocol.registry/publisher-provided": z.record(z.string(), z.unknown()).optional()});

export const modelIcon = z.object({mimeType: z.string().optional(), sizes: z.array(z.string()).optional(), src: z.string().max(255).optional(), theme: z.string().optional()});

export const modelFormat = z.enum(["string", "number", "boolean", "filepath"]);

export const modelInput = z.object({choices: z.array(z.string()).optional(), default: z.string().optional(), description: z.string().optional(), format: modelFormat.optional(), isRequired: z.boolean().optional(), isSecret: z.boolean().optional(), placeholder: z.string().optional(), value: z.string().optional()});

export const modelKeyValueInput = z.object({choices: z.array(z.string()).optional(), default: z.string().optional(), description: z.string().optional(), format: modelFormat.optional(), isRequired: z.boolean().optional(), isSecret: z.boolean().optional(), name: z.string().optional(), placeholder: z.string().optional(), value: z.string().optional(), variables: z.record(z.string(), modelInput).optional()});

export const modelArgumentType = z.enum(["positional", "named"]);

export const modelArgument = z.object({choices: z.array(z.string()).optional(), default: z.string().optional(), description: z.string().optional(), format: modelFormat.optional(), isRepeated: z.boolean().optional(), isRequired: z.boolean().optional(), isSecret: z.boolean().optional(), name: z.string().optional(), placeholder: z.string().optional(), type: modelArgumentType.optional(), value: z.string().optional(), valueHint: z.string().optional(), variables: z.record(z.string(), modelInput).optional()});

export const modelTransport = z.object({headers: z.array(modelKeyValueInput).optional(), type: z.string().optional(), url: z.string().optional(), variables: z.record(z.string(), modelInput).optional()});

export const modelPackage = z.object({environmentVariables: z.array(modelKeyValueInput).optional(), fileSha256: z.string().optional(), identifier: z.string().min(1).optional(), packageArguments: z.array(modelArgument).optional(), registryBaseUrl: z.string().optional(), registryType: z.string().min(1).optional(), runtimeArguments: z.array(modelArgument).optional(), runtimeHint: z.string().optional(), transport: modelTransport.optional(), version: z.string().min(1).max(255).optional()});

export const modelRepository = z.object({id: z.string().optional(), source: z.string().optional(), subfolder: z.string().optional(), url: z.string().optional()});

export const v0ServerJSON = z.object({$schema: z.string().min(1).optional(), _meta: v0ServerMeta.optional(), description: z.string().min(1).max(100).optional(), icons: z.array(modelIcon).optional(), name: z.string().min(3).max(200).optional(), packages: z.array(modelPackage).optional(), remotes: z.array(modelTransport).optional(), repository: modelRepository.optional(), title: z.string().min(1).max(100).optional(), version: z.string().min(1).max(255).optional(), websiteUrl: z.string().optional()});

export const pkgApiV1ServersV01Response = z.object({metadata: pkgApiV1PaginationV01Metadata.optional(), servers: z.array(v0ServerJSON).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
};

/**
 * List available registry servers
 * 
 * GET /registry/{registryName}/v0.1/servers
 */
export const getApiRegistryRegistryNameV01Servers = async (args: GetApiRegistryRegistryNameV01ServersArgs, options: GetApiRegistryRegistryNameV01ServersOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.q != null) query.append("q", String(args.q))
if (args.page != null) query.append("page", String(args.page))
if (args.limit != null) query.append("limit", String(args.limit))

const url = `${baseUrl.replace(/\/+$/, '')}/registry/${encodeURIComponent(String(args.registryName))}/v0.1/servers${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(pkgApiV1ServersV01Response, await res.json())
};