import {z} from 'zod'

export type GetApiApiV2LlmObsV1PromptsPromptIdVersionsArgs = {prompt_id: string};

export type GetApiApiV2LlmObsV1PromptsPromptIdVersionsOptions = {baseUrl?: string | undefined, apiKeyAuth?: string | undefined, appKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const lLMObsPromptDataset = z.object({id: z.string(), name: z.string().optional()});

export const lLMObsPromptVersionListDataAttributes = z.object({author: z.string().optional(), created_at: z.string().optional(), datasets: z.array(lLMObsPromptDataset).optional(), description: z.string().optional(), labels: z.array(z.string()).optional(), last_seen_at: z.string().optional(), ml_app: z.string().optional(), ml_apps: z.array(z.string()).optional(), prompt_id: z.string(), prompt_uuid: z.string(), tags: z.array(z.string()).optional(), user_version: z.string().optional(), version: z.number().int().gte(1), version_created_at: z.string().optional()});

export const lLMObsPromptVersionType = z.literal("prompt-template-versions");

export const lLMObsPromptVersionListData = z.object({attributes: lLMObsPromptVersionListDataAttributes, id: z.string(), type: lLMObsPromptVersionType});

export const lLMObsPromptVersionsResponse = z.object({data: z.array(lLMObsPromptVersionListData)});

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 versions of an Agent Observability prompt
 * 
 * GET /api/v2/llm-obs/v1/prompts/{prompt_id}/versions
 * 
 * Also accepts auth: AuthZ
 */
export const getApiApiV2LlmObsV1PromptsPromptIdVersions = async (args: GetApiApiV2LlmObsV1PromptsPromptIdVersionsArgs, options?: GetApiApiV2LlmObsV1PromptsPromptIdVersionsOptions) => {
const {baseUrl = "https://api.datadoghq.com", fetch: fetchFn = fetch, apiKeyAuth, appKeyAuth} = options ?? {}

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

if (apiKeyAuth !== undefined) headers.set("DD-API-KEY", apiKeyAuth)
if (appKeyAuth !== undefined) headers.set("DD-APPLICATION-KEY", appKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/llm-obs/v1/prompts/${encodeURIComponent(String(args.prompt_id))}/versions${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(lLMObsPromptVersionsResponse, await res.json())
};