import {z} from 'zod'

export type LogLevel = 'DEBUG' | 'INFO' | 'WARNING' | 'ERROR' | 'CRITICAL';

export type LogSource = 'stdout' | 'stderr' | 'server';

export type GetApiLogsArgs = {agent_name: string, branch_id?: (string | null) | undefined, task_id?: (string | null) | undefined, trace_id?: (string | null) | undefined, level?: (LogLevel | null) | undefined, source?: (LogSource | null) | undefined, since?: (string | null) | undefined, until?: (string | null) | undefined, search?: (string | null) | undefined, after_id?: (string | null) | undefined, limit?: number | undefined, offset?: number | undefined};

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

export const logLevel = z.enum(["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]);

export const logSource = z.enum(["stdout", "stderr", "server"]);

export const logQueryEntry = z.object({agent_id: z.string(), environment: z.string().nullable().optional(), level: logLevel, log_id: z.string(), logger: z.string().nullable().optional(), message: z.string(), method: z.string().nullable().optional(), source: logSource, span_id: z.string().nullable().optional(), task_id: z.string().nullable().optional(), timestamp: z.string(), trace_id: z.string().nullable().optional(), version: z.string().nullable().optional()});

export const logListResponse = z.object({has_more: z.boolean(), logs: z.array(logQueryEntry), 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 Agent Logs
 * 
 * GET /logs
 */
export const getApiLogs = async (args: GetApiLogsArgs, options: GetApiLogsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.agent_name != null) query.append("agent_name", String(args.agent_name))
if (args.branch_id != null) query.append("branch_id", String(args.branch_id))
if (args.task_id != null) query.append("task_id", String(args.task_id))
if (args.trace_id != null) query.append("trace_id", String(args.trace_id))
if (args.level != null) query.append("level", String(args.level))
if (args.source != null) query.append("source", String(args.source))
if (args.since != null) query.append("since", String(args.since))
if (args.until != null) query.append("until", String(args.until))
if (args.search != null) query.append("search", String(args.search))
if (args.after_id != null) query.append("after_id", String(args.after_id))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))

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