import {z} from 'zod'

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

export const chatConfig = z.object({quick_prompts: z.record(z.string(), z.array(z.string()))});

export const manifest = z.object({description: z.string().nullable().optional(), labels: z.array(z.string()).nullable().optional(), quick_prompts: z.array(z.string()).nullable().optional()});

export const sessionDomainConfig = z.object({display_name: z.string().nullable().optional()});

export const databaseConfigSessionDomainConfig = z.object({db_id: z.string(), domain_config: sessionDomainConfig.nullable().optional(), tables: z.array(z.string()).nullable().optional()});

export const sessionConfig = z.object({display_name: z.string().nullable().optional(), dbs: z.array(databaseConfigSessionDomainConfig).nullable().optional()});

export const metricsDomainConfig = z.object({display_name: z.string().nullable().optional()});

export const databaseConfigMetricsDomainConfig = z.object({db_id: z.string(), domain_config: metricsDomainConfig.nullable().optional(), tables: z.array(z.string()).nullable().optional()});

export const metricsConfig = z.object({display_name: z.string().nullable().optional(), dbs: z.array(databaseConfigMetricsDomainConfig).nullable().optional()});

export const memoryDomainConfig = z.object({display_name: z.string().nullable().optional()});

export const databaseConfigMemoryDomainConfig = z.object({db_id: z.string(), domain_config: memoryDomainConfig.nullable().optional(), tables: z.array(z.string()).nullable().optional()});

export const memoryConfig = z.object({display_name: z.string().nullable().optional(), dbs: z.array(databaseConfigMemoryDomainConfig).nullable().optional()});

export const learningDomainConfig = z.object({display_name: z.string().nullable().optional()});

export const databaseConfigLearningDomainConfig = z.object({db_id: z.string(), domain_config: learningDomainConfig.nullable().optional(), tables: z.array(z.string()).nullable().optional()});

export const learningConfig = z.object({display_name: z.string().nullable().optional(), dbs: z.array(databaseConfigLearningDomainConfig).nullable().optional()});

export const knowledgeDomainConfig = z.object({display_name: z.string().nullable().optional()});

export const knowledgeDatabaseConfig = z.object({db_id: z.string(), domain_config: knowledgeDomainConfig.nullable().optional(), tables: z.array(z.string()).optional()});

export const knowledgeInstanceConfig = z.object({id: z.string(), name: z.string(), description: z.string().nullable().optional(), db_id: z.string(), table: z.string()});

export const knowledgeConfig = z.object({display_name: z.string().nullable().optional(), dbs: z.array(knowledgeDatabaseConfig).nullable().optional(), knowledge_instances: z.array(knowledgeInstanceConfig).nullable().optional()});

export const evalsDomainConfig = z.object({display_name: z.string().nullable().optional()});

export const databaseConfigEvalsDomainConfig = z.object({db_id: z.string(), domain_config: evalsDomainConfig.nullable().optional(), tables: z.array(z.string()).nullable().optional()});

export const evalsConfig = z.object({display_name: z.string().nullable().optional(), dbs: z.array(databaseConfigEvalsDomainConfig).nullable().optional()});

export const tracesDomainConfig = z.object({display_name: z.string().nullable().optional()});

export const databaseConfigTracesDomainConfig = z.object({db_id: z.string(), domain_config: tracesDomainConfig.nullable().optional(), tables: z.array(z.string()).nullable().optional()});

export const tracesConfig = z.object({display_name: z.string().nullable().optional(), dbs: z.array(databaseConfigTracesDomainConfig).nullable().optional()});

export const model = z.object({id: z.string().nullable().optional(), provider: z.string().nullable().optional()});

export const agentSummaryResponse = z.object({id: z.string().nullable().optional(), name: z.string().nullable().optional(), description: z.string().nullable().optional(), db_id: z.string().nullable().optional(), model: model.nullable().optional(), metadata: z.record(z.string(), z.unknown()).nullable().optional()});

export const teamSummaryResponse = z.object({id: z.string().nullable().optional(), name: z.string().nullable().optional(), description: z.string().nullable().optional(), db_id: z.string().nullable().optional(), mode: z.string().nullable().optional(), model: model.nullable().optional()});

export const workflowSummaryResponse = z.object({id: z.string().nullable().optional(), name: z.string().nullable().optional(), description: z.string().nullable().optional(), db_id: z.string().nullable().optional(), is_factory: z.boolean().optional(), factory_input_schema: z.record(z.string(), z.unknown()).nullable().optional(), is_component: z.boolean().optional(), current_version: z.number().int().nullable().optional(), stage: z.string().nullable().optional()});

export const interfaceResponse = z.object({type: z.string(), version: z.string(), route: z.string()});

export const configResponse = z.object({os_id: z.string(), name: z.string().nullable().optional(), description: z.string().nullable().optional(), available_models: z.array(z.string()).nullable().optional(), os_database: z.string().nullable().optional(), databases: z.array(z.string()), chat: chatConfig.nullable().optional(), manifest: z.record(z.string(), manifest).nullable().optional(), session: sessionConfig.nullable().optional(), metrics: metricsConfig.nullable().optional(), memory: memoryConfig.nullable().optional(), learning: learningConfig.nullable().optional(), knowledge: knowledgeConfig.nullable().optional(), evals: evalsConfig.nullable().optional(), traces: tracesConfig.nullable().optional(), agents: z.array(agentSummaryResponse), teams: z.array(teamSummaryResponse), workflows: z.array(workflowSummaryResponse), interfaces: z.array(interfaceResponse)});

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 OS Configuration
 * 
 * GET /config
 */
export const getApiConfig = async (options: GetApiConfigOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

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