import {z} from 'zod'

export type CreateApiPersonasFromTranscriptArgs = {projectId?: string | undefined, body: {projectReference?: string | undefined, sessionId?: string | undefined, transcriptContent?: ({messages: Array<{source: 'user' | 'bot' | 'agent' | 'suggestion', content: string, timestamp: string}>}) | undefined, flowId?: string | undefined, numberOfSuccessCriteria?: number | undefined, analysisOptions?: ({maxTurns?: number | undefined, focusOnUserGoals?: boolean | undefined}) | undefined}};

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

export const createApiPersonasFromTranscriptResponse = z.object({success: z.boolean(), personaPackage: z.object({simulationName: z.string(), personaName: z.string(), personaDescription: z.string(), mission: z.string(), successCriteria: z.array(z.object({name: z.string(), text: z.string()}))}), metadata: z.object({transcriptSummary: z.string(), analysisTimestamp: z.string(), warnings: z.array(z.string()).optional(), turnCount: z.number().int().optional(), extractedIntents: z.array(z.string()).optional(), messages: z.array(z.object({source: z.enum(["user", "bot", "agent", "suggestion"]), content: z.string(), timestamp: z.string()}))})});

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
};

/**
 * Create scenario from transcript
 * 
 * POST /personas/from-transcript
 * 
 * Also accepts auth: apiKeyAuth
 */
export const createApiPersonasFromTranscript = async (args: CreateApiPersonasFromTranscriptArgs, options?: CreateApiPersonasFromTranscriptOptions) => {
const {baseUrl = "https://api-trial.cognigy.ai/testing", 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 (args.projectId != null) query.append("projectId", String(args.projectId))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/personas/from-transcript${query.size > 0 ? `?${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(createApiPersonasFromTranscriptResponse, await res.json())
};