import {z} from 'zod'

export type ApiOpsMcpGatewayCreateDTO = {name?: string | undefined, relativePath?: string | undefined, description?: string | undefined};

export type CreateApiApiopsProjectsProjectNameApiProxiesApiProxyNameMcpGatewayArgs = {projectName: string, apiProxyName: string, body: ApiOpsMcpGatewayCreateDTO};

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

export const mcpGatewayToolDTO = z.object({toolName: z.string().optional(), httpMethod: z.string().optional(), path: z.string().optional(), description: z.string().optional(), schemaSource: z.enum(["AUTO", "OVERRIDE"]).optional()});

export const apiOpsResponseMcpGateway = z.object({status: z.enum(["SUCCESS", "FAILURE"]).optional(), resultMessage: z.string().optional(), resultList: z.array(mcpGatewayToolDTO).optional(), resultCount: z.number().int().optional(), apiProxyName: z.string().optional(), relativePath: z.string().optional(), sourceApiProxyName: z.string().optional(), deployed: 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
};

/**
 * Generate an MCP Gateway from an existing API Proxy
 * 
 * POST /apiops/projects/{projectName}/apiProxies/{apiProxyName}/mcp-gateway/
 */
export const createApiApiopsProjectsProjectNameApiProxiesApiProxyNameMcpGateway = async (args: CreateApiApiopsProjectsProjectNameApiProxiesApiProxyNameMcpGatewayArgs, options?: CreateApiApiopsProjectsProjectNameApiProxiesApiProxyNameMcpGatewayOptions) => {
const {baseUrl = "http://167.86.118.166:32080", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/apiops/projects/${encodeURIComponent(String(args.projectName))}/apiProxies/${encodeURIComponent(String(args.apiProxyName))}/mcp-gateway/${query.size > 0 ? `?${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(apiOpsResponseMcpGateway, await res.json())
};