import {z} from 'zod'

export type SessionType = 'agent' | 'team' | 'workflow';

export type SortOrder = 'asc' | 'desc';

export type GetApiSessionsArgs = {type?: (SessionType | null) | undefined, component_id?: (string | null) | undefined, user_id?: (string | null) | undefined, session_name?: (string | null) | undefined, limit?: (number | null) | undefined, page?: (number | null) | undefined, sort_by?: (string | null) | undefined, sort_order?: (SortOrder | null) | undefined, db_id?: (string | null) | undefined, table?: (string | null) | undefined};

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

export const sessionSchema = z.object({session_id: z.string(), session_name: z.string(), session_state: z.record(z.string(), z.unknown()).nullable().optional(), created_at: z.string().nullable().optional(), updated_at: z.string().nullable().optional(), session_type: z.string().nullable().optional(), user_id: z.string().nullable().optional(), agent_id: z.string().nullable().optional(), team_id: z.string().nullable().optional(), workflow_id: z.string().nullable().optional(), session_summary: z.record(z.string(), z.unknown()).nullable().optional(), metrics: z.record(z.string(), z.unknown()).nullable().optional(), total_tokens: z.number().int().nullable().optional(), metadata: z.record(z.string(), z.unknown()).nullable().optional()});

export const paginationInfo = z.object({page: z.number().int().gte(0).optional(), limit: z.number().int().gte(1).optional(), total_pages: z.number().int().gte(0).optional(), total_count: z.number().int().gte(0).optional(), search_time_ms: z.number().gte(0).optional()});

export const paginatedResponseSessionSchema = z.object({data: z.array(sessionSchema), meta: paginationInfo});

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 Sessions
 * 
 * GET /sessions
 */
export const getApiSessions = async (args: GetApiSessionsArgs, options: GetApiSessionsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.type != null) query.append("type", String(args.type))
if (args.component_id != null) query.append("component_id", String(args.component_id))
if (args.user_id != null) query.append("user_id", String(args.user_id))
if (args.session_name != null) query.append("session_name", String(args.session_name))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.page != null) query.append("page", String(args.page))
if (args.sort_by != null) query.append("sort_by", String(args.sort_by))
if (args.sort_order != null) query.append("sort_order", String(args.sort_order))
if (args.db_id != null) query.append("db_id", String(args.db_id))
if (args.table != null) query.append("table", String(args.table))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/sessions${query.size > 0 ? `?${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(paginatedResponseSessionSchema, await res.json())
};