import {z} from 'zod'

export type LLMObsPromptVersionLabel = 'production' | 'development';

export type LLMObsUpdatePromptVersionDataAttributes = {description?: string | undefined, env_ids?: Array<string> | undefined, labels?: Array<LLMObsPromptVersionLabel> | undefined};

export type LLMObsPromptVersionType = 'prompt-template-versions';

export type LLMObsUpdatePromptVersionData = {attributes: LLMObsUpdatePromptVersionDataAttributes, type: LLMObsPromptVersionType};

export type LLMObsUpdatePromptVersionRequest = {data: LLMObsUpdatePromptVersionData};

export type PatchApiApiV2LlmObsV1PromptsPromptIdVersionsVersionArgs = {prompt_id: string, version: number, body: LLMObsUpdatePromptVersionRequest};

export type PatchApiApiV2LlmObsV1PromptsPromptIdVersionsVersionOptions = {baseUrl?: string | undefined, apiKeyAuth?: string | undefined, appKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const lLMObsPromptTextTemplate = z.string().min(1);

export const lLMObsPromptChatMessage = z.object({content: z.string(), role: z.string()});

export const lLMObsPromptMessagePlaceholderType = z.literal("placeholder");

export const lLMObsPromptMessagePlaceholder = z.object({name: z.string().min(1), type: lLMObsPromptMessagePlaceholderType});

export const lLMObsPromptChatTemplateItem = z.union([lLMObsPromptChatMessage, lLMObsPromptMessagePlaceholder]);

export const lLMObsPromptChatTemplate = z.array(lLMObsPromptChatTemplateItem);

export const lLMObsPromptInclude = z.object({items: z.array(z.number().int().gte(0).lte(2147483647)).optional(), prompt_id: z.string().min(1), version: z.number().int().gte(1).lte(2147483647)});

export const lLMObsPromptIncludeItem = z.object({include: lLMObsPromptInclude});

export const lLMObsPromptAuthoringItem = z.union([lLMObsPromptChatMessage, lLMObsPromptIncludeItem]);

export const lLMObsPromptAuthoringChatTemplate = z.array(lLMObsPromptAuthoringItem);

export const lLMObsPromptAuthoringMessagesTemplate = z.object({messages: lLMObsPromptAuthoringChatTemplate});

export const lLMObsPromptTemplate = z.union([lLMObsPromptTextTemplate, lLMObsPromptChatTemplate, lLMObsPromptAuthoringMessagesTemplate]);

export const lLMObsPromptConfig = z.record(z.string(), z.unknown());

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

export const lLMObsPromptVersionDataAttributes = z.object({author: z.string().optional(), authoring_template: lLMObsPromptTemplate.optional(), config: lLMObsPromptConfig.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(), template: lLMObsPromptTemplate, 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 lLMObsPromptVersionData = z.object({attributes: lLMObsPromptVersionDataAttributes, id: z.string(), type: lLMObsPromptVersionType});

export const lLMObsPromptVersionResponse = z.object({data: lLMObsPromptVersionData});

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
};

/**
 * Update an Agent Observability prompt version
 * 
 * PATCH /api/v2/llm-obs/v1/prompts/{prompt_id}/versions/{version}
 * 
 * Also accepts auth: AuthZ
 */
export const patchApiApiV2LlmObsV1PromptsPromptIdVersionsVersion = async (args: PatchApiApiV2LlmObsV1PromptsPromptIdVersionsVersionArgs, options?: PatchApiApiV2LlmObsV1PromptsPromptIdVersionsVersionOptions) => {
const {baseUrl = "https://api.datadoghq.com", fetch: fetchFn = fetch, apiKeyAuth, appKeyAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
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/${encodeURIComponent(String(args.prompt_id))}/versions/${encodeURIComponent(String(args.version))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PATCH", 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(lLMObsPromptVersionResponse, await res.json())
};