import {z} from 'zod'

export type AiRouterDecisionConfidence = 'high' | 'medium' | 'low';

export type AiRouterSelectionMode = 'auto_routed' | 'manual_pick';

export type GetApiApiV1OrgAiRouterDecisionsArgs = {confidence?: AiRouterDecisionConfidence | undefined, selectionMode?: AiRouterSelectionMode | undefined, fromDate?: string | undefined, toDate?: string | undefined};

export type GetApiApiV1OrgAiRouterDecisionsOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const aiRouterSelectionMode = z.enum(["auto_routed", "manual_pick"]);

export const aiRouterDecisionConfidence = z.enum(["high", "medium", "low"]);

export const aiRouterDecision = z.object({committedAt: z.string().nullable(), createdAt: z.string(), selectionMode: aiRouterSelectionMode.nullable(), candidateAgentUuids: z.array(z.string()), reasoning: z.string(), confidence: aiRouterDecisionConfidence, chosenAgentUuid: z.string().nullable(), suggestedAgentUuid: z.string(), prompt: z.string(), userUuid: z.string(), threadUuid: z.string().nullable(), routerUuid: z.string(), decisionUuid: z.string()});

export const apiAiRouterDecisionListResponse = z.object({results: z.array(aiRouterDecision), status: z.literal("ok")});

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 router decisions
 * 
 * GET /api/v1/org/aiRouter/decisions
 */
export const getApiApiV1OrgAiRouterDecisions = async (args: GetApiApiV1OrgAiRouterDecisionsArgs, options: GetApiApiV1OrgAiRouterDecisionsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.confidence != null) query.append("confidence", String(args.confidence))
if (args.selectionMode != null) query.append("selectionMode", String(args.selectionMode))
if (args.fromDate != null) query.append("fromDate", String(args.fromDate))
if (args.toDate != null) query.append("toDate", String(args.toDate))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/org/aiRouter/decisions${query.size > 0 ? `?${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(apiAiRouterDecisionListResponse, await res.json())
};