import {z} from 'zod'

export type InputArgType = 'default' | 'pinned';

export type InputArgConfig = {value: unknown, type?: InputArgType | undefined};

export type TestSessionFeatureInput = {identity_resolution?: boolean | undefined, memory?: boolean | undefined, summarization?: boolean | undefined, extraction?: boolean | undefined, evaluations?: boolean | undefined, knowledge_gap_analysis?: boolean | undefined};

export type ConversationCreate = {end_user_id?: (string | null) | undefined, org_external_end_user_id?: (string | null) | undefined, assistant_id?: (string | null) | undefined, assistant_revision_id?: (string | null) | undefined, team_id?: (string | null) | undefined, team_revision_id?: (string | null) | undefined, session_type?: ('live' | 'test' | 'simulation') | undefined, external_id?: (string | null) | undefined, subject?: (string | null) | undefined, metadata?: ({[key: string]: unknown} | null) | undefined, tool_input_overrides?: ({[key: string]: {[key: string]: InputArgConfig}} | null) | undefined, context_variables?: ({[key: string]: unknown} | null) | undefined, test_features?: (TestSessionFeatureInput | null) | undefined};

export type CreateApiV1ConversationsArgs = {body: ConversationCreate};

export type CreateApiV1ConversationsOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const inputArgType = z.enum(["default", "pinned"]);

export const inputArgConfig = z.object({value: z.unknown(), type: inputArgType.optional()});

export const testSessionFeatures = z.object({version: z.literal(1).optional(), identity_resolution: z.boolean(), memory: z.boolean(), summarization: z.boolean(), extraction: z.boolean(), evaluations: z.boolean(), knowledge_gap_analysis: z.boolean()});

export const conversationResponse = z.object({id: z.string(), organization_id: z.string(), end_user_id: z.string(), channel: z.string(), surface: z.string(), status: z.string(), session_type: z.string(), assistant_id: z.string().nullable().optional(), assistant_revision_id: z.string().nullable().optional(), team_id: z.string().nullable().optional(), team_revision_id: z.string().nullable().optional(), external_id: z.string().nullable().optional(), subject: z.string().nullable().optional(), tool_input_overrides: z.record(z.string(), z.record(z.string(), inputArgConfig)).nullable().optional(), test_features: testSessionFeatures.nullable().optional(), created_at: z.string(), updated_at: 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
};

/**
 * Get or create a v2 conversation
 * 
 * POST /v1/conversations
 */
export const createApiV1Conversations = async (args: CreateApiV1ConversationsArgs, options: CreateApiV1ConversationsOptions) => {
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${query.size > 0 ? `?${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(conversationResponse, await res.json())
};