import {z} from 'zod'

export type InsightTemplateUpdateReq = {instructions?: string | undefined, name?: string | undefined, webhook?: string | undefined, json_schema?: (string | Record<string, never>) | undefined};

export type UpdateApiAiConversationsInsightsInsightIdArgs = {insight_id: string, body: InsightTemplateUpdateReq};

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

export const templateType = z.enum(["custom", "default"]);

export const insightTemplateResp = z.object({id: z.string(), instructions: z.string(), created_at: z.string(), insight_type: templateType.optional(), name: z.string().optional(), webhook: z.string().optional(), json_schema: z.union([z.string(), z.object({})]).optional()});

export const insightTemplateDetailRespData = z.object({data: insightTemplateResp});

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 Insight Template
 * 
 * PUT /ai/conversations/insights/{insight_id}
 */
export const updateApiAiConversationsInsightsInsightId = async (args: UpdateApiAiConversationsInsightsInsightIdArgs, options?: UpdateApiAiConversationsInsightsInsightIdOptions) => {
const {baseUrl = "https://api.telnyx.com/v2", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/ai/conversations/insights/${encodeURIComponent(String(args.insight_id))}${query.size > 0 ? `?${query}` : ''}`

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