import {z} from 'zod'

export type EndSessionRequest = {end_user_id: string, session_id: string, agent_id?: (string | null) | undefined, reason?: (string | null) | undefined};

export type CreateApiV1ConversationsConversationIdEndSessionArgs = {conversation_id: string, body: EndSessionRequest | null};

export type CreateApiV1ConversationsConversationIdEndSessionOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const assistantMessage = z.object({turn_id: z.string().nullable().optional(), content: z.string(), sequence: z.number().int().optional(), producing_assistant_id: z.string().nullable().optional()});

export const sessionStatus = z.enum(["idle", "running_turn", "end_requested", "end_processing", "ended", "error"]);

export const transferDestinationLookup = z.object({tool_id: z.string(), response_path: z.string(), rendered_args: z.record(z.string(), z.unknown()).optional(), missing_inputs: z.array(z.string()).optional()});

export const warmTransferConfig = z.object({message_mode: z.enum(["ai_summary", "static", "prompt"]).optional(), briefing_template: z.string().max(4000).nullable().optional(), max_dial_seconds: z.number().int().gte(5).lte(120).optional(), max_briefing_seconds: z.number().int().gte(15).lte(600).optional(), bridge_confirm_seconds: z.number().int().gte(5).lte(60).optional(), max_hold_seconds: z.number().int().gte(15).lte(300).optional(), hold_announcement_text: z.string().max(500).optional(), reassurance_interval_seconds: z.number().int().gte(0).lte(60).optional(), reassurance_text: z.string().max(500).optional(), detect_supervisor_voicemail: z.boolean().optional(), detect_supervisor_silence: z.boolean().optional(), silence_reminder_text: z.string().max(500).optional(), silence_timeout_seconds: z.number().int().gte(5).lte(60).optional(), retry_announcement_text: z.string().max(500).optional(), failure_text: z.string().max(500).optional()});

export const warmTransferTargetOverride = z.object({briefing_template: z.string().max(4000).nullable().optional(), message_mode: z.enum(["ai_summary", "static", "prompt"]).nullable().optional()});

export const callTransferIntent = z.object({destination: z.string().nullable().optional(), destination_lookup: transferDestinationLookup.nullable().optional(), mode: z.enum(["cold", "warm"]).optional(), label: z.string().nullable().optional(), connecting_text: z.string().nullable().optional(), reason: z.string().nullable().optional(), warm_destinations: z.array(z.string()).optional(), max_retries: z.number().int().gte(0).lte(5).optional(), retry_text: z.string().max(500).nullable().optional(), on_failure: z.string().nullable().optional(), warm: warmTransferConfig.nullable().optional(), warm_overrides: warmTransferTargetOverride.nullable().optional()});

export const dtmfInputSpec = z.object({expects_input: z.boolean().optional(), max_digits: z.number().int().gte(1).lte(64).nullable().optional(), termination_digit: z.string().max(1).nullable().optional(), inter_digit_timeout_ms: z.number().int().gte(250).lte(60000).nullable().optional(), prefix: z.string().max(32).nullable().optional()});

export const turnResult = z.object({session_id: z.string().nullable().optional(), messages: z.array(assistantMessage).optional(), status: sessionStatus, handoff: z.record(z.string(), z.unknown()).nullable().optional(), call_transfer: callTransferIntent.nullable().optional(), dtmf_input: dtmfInputSpec.nullable().optional(), session_status: z.string().nullable().optional(), error: z.string().nullable().optional(), model_used: z.string().nullable().optional(), token_count: z.number().int().nullable().optional(), latency_ms: z.number().int().nullable().optional()});

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
};

/**
 * End a v2 conversation through the close pipeline (admin)
 * 
 * POST /v1/conversations/{conversation_id}/end_session
 */
export const createApiV1ConversationsConversationIdEndSession = async (args: CreateApiV1ConversationsConversationIdEndSessionArgs, options: CreateApiV1ConversationsConversationIdEndSessionOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/conversations/${encodeURIComponent(String(args.conversation_id))}/end_session${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(turnResult, await res.json())
};