import {z} from 'zod'

export type GetApiUsageSessionsArgs = {allocated_after: string, allocated_before: string, limit?: number | undefined, offset?: number | undefined, session_status?: (Array<'active' | 'completed' | 'cancelled' | 'expired'> | null) | undefined, processed_status?: (Array<'pending' | 'billed' | 'failed'> | null) | undefined, agent_id?: string | undefined, allocated_by?: (Array<'dashboard_run' | 'api_run' | 'interactive'> | null) | undefined, search?: string | undefined, order_by?: string | undefined};

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

export const usageSession = z.object({agent_id: z.string(), allocated_at: z.string().optional(), allocated_by: z.enum(["dashboard_run", "api_run", "interactive"]).optional(), billing_plan_id: z.string().optional(), cost_microdollars: z.number().int(), deallocated_at: z.string().optional(), duration_seconds: z.number().int().optional(), inference_cost_microdollars: z.number().int(), is_dedicated_phone: z.boolean(), phone_id: z.string(), processed_status: z.enum(["pending", "billed", "failed"]).optional(), session_id: z.string(), session_metadata: z.record(z.string(), z.unknown()).optional(), session_status: z.enum(["active", "completed", "cancelled", "expired"]).optional(), total_cost_microdollars: z.number().int()});

export const usageSessionsResponse = z.object({limit: z.number().int(), offset: z.number().int(), sessions: z.array(usageSession).nullable(), total: z.number().int()});

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 phone sessions with cost
 * 
 * GET /usage/sessions
 */
export const getApiUsageSessions = async (args: GetApiUsageSessionsArgs, options?: GetApiUsageSessionsOptions) => {
const {baseUrl = "https://api.axilio.ai/api/v1", fetch: fetchFn = fetch, apiKeyAuth} = options ?? {}

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

if (args.allocated_after != null) query.append("allocated_after", String(args.allocated_after))
if (args.allocated_before != null) query.append("allocated_before", String(args.allocated_before))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.session_status != null) query.append("session_status", args.session_status.join(','))
if (args.processed_status != null) query.append("processed_status", args.processed_status.join(','))
if (args.agent_id != null) query.append("agent_id", String(args.agent_id))
if (args.allocated_by != null) query.append("allocated_by", args.allocated_by.join(','))
if (args.search != null) query.append("search", String(args.search))
if (args.order_by != null) query.append("order_by", String(args.order_by))
if (apiKeyAuth !== undefined) headers.set("X-Axilio-Api-Key", apiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/usage/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(usageSessionsResponse, await res.json())
};