import {z} from 'zod'

export type GetApiApiConfigArgs = {from_db?: ('true' | 'false') | undefined};

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

export const getConfigResponse = z.object({client_config: z.object({drop_excess_requests: z.boolean().optional(), prometheus_labels: z.array(z.string()).optional(), allowed_origins: z.array(z.string()).optional(), initial_pool_size: z.number().int().optional(), enable_logging: z.boolean().optional(), disable_content_logging: z.boolean().optional(), allow_per_request_content_storage_override: z.boolean().optional(), allow_per_request_raw_override: z.boolean().optional(), enforce_auth_on_inference: z.boolean().optional(), enforce_governance_header: z.boolean().optional(), max_request_body_size_mb: z.number().int().optional(), compat: z.object({convert_text_to_chat: z.boolean().optional(), convert_chat_to_responses: z.boolean().optional(), should_drop_params: z.boolean().optional(), should_convert_params: z.boolean().optional()}).optional(), log_retention_days: z.number().int().optional(), header_filter_config: z.object({allowlist: z.array(z.string()).optional(), denylist: z.array(z.string()).optional()}).optional(), mcp_agent_depth: z.number().int().optional(), mcp_tool_execution_timeout: z.number().int().optional(), mcp_code_mode_binding_level: z.string().optional(), required_headers: z.array(z.string()).optional(), logging_headers: z.array(z.string()).optional(), mcp_external_client_url: z.union([z.string(), z.object({value: z.string().optional(), env_var: z.string().optional(), from_env: z.boolean().optional()})]).optional(), mcp_server_auth_mode: z.enum(["headers", "both", "oauth"]).optional(), oauth2_server_config: z.object({issuer_url: z.union([z.string(), z.object({value: z.string().optional(), env_var: z.string().optional(), from_env: z.boolean().optional()})]).optional(), auth_code_ttl: z.number().int().gte(1).lte(900).optional(), access_token_ttl: z.number().int().gte(1).optional(), disable_vk_identity: z.boolean().optional()}).optional()}).optional(), framework_config: z.object({id: z.number().int().optional(), pricing_url: z.string().optional(), pricing_sync_interval: z.number().int().optional()}).optional(), auth_config: z.object({admin_username: z.string().optional(), admin_password: z.string().optional(), is_enabled: z.boolean().optional(), disable_auth_on_inference: z.boolean().optional()}).optional(), is_db_connected: z.boolean().optional(), is_cache_connected: z.boolean().optional(), is_logs_connected: z.boolean().optional(), proxy_config: z.object({enabled: z.boolean().optional(), type: z.enum(["http", "socks5", "tcp"]).optional(), url: z.string().optional(), username: z.string().optional(), password: z.string().optional(), no_proxy: z.string().optional(), timeout: z.number().int().optional(), skip_tls_verify: z.boolean().optional(), enable_for_scim: z.boolean().optional(), enable_for_inference: z.boolean().optional(), enable_for_api: z.boolean().optional()}).optional(), restart_required: z.object({required: z.boolean().optional(), reason: z.string().optional()}).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
};

/**
 * Get configuration
 * 
 * GET /api/config
 */
export const getApiApiConfig = async (args: GetApiApiConfigArgs, options?: GetApiApiConfigOptions) => {
const {baseUrl = "http://localhost:8080", fetch: fetchFn = fetch, ManagementBearerAuth} = options ?? {}

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

if (args.from_db != null) query.append("from_db", String(args.from_db))
if (ManagementBearerAuth !== undefined) headers.set('authorization', `Bearer ${ManagementBearerAuth}`)

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