import {z} from 'zod'

export type GetApiSchemaTablesTableArgs = {table: string};

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

export const columnConfig = z.object({preloadingDays: z.number().int().optional(), priority: z.number().int().optional()});

export const column = z.object({caseInsensitive: z.boolean().optional(), config: columnConfig.optional(), defaultValue: z.string().optional(), deleted: z.boolean().optional(), disableAutoExpand: z.boolean().optional(), name: z.string().optional(), type: z.string().optional()});

export const tableConfig = z.object({archivingDelayMinutes: z.number().int().optional(), archivingIntervalMinutes: z.number().int().optional(), backfillIntervalMinutes: z.number().int().optional(), backfillMaxBufferSize: z.number().int().optional(), backfillStoreBatchSize: z.number().int().optional(), backfillThresholdInBytes: z.number().int().optional(), batchSize: z.number().int().optional(), initPrimaryKeyNumBuckets: z.number().int().optional(), maxRedoLogFileSize: z.number().int().optional(), recordRetentionInDays: z.number().int().optional(), redoLogRotationInterval: z.number().int().optional(), snapshotIntervalMinutes: z.number().int().optional(), snapshotThreshold: z.number().int().optional()});

export const table = z.object({archivingSortColumns: z.array(z.number().int()).optional(), columns: z.array(column).optional(), config: tableConfig.optional(), isFactTable: z.boolean().optional(), name: z.string().optional(), primaryKeyColumns: z.array(z.number().int()).optional(), version: z.number().int().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 the table schema for specific table name
 * 
 * GET /schema/tables/{table}
 */
export const getApiSchemaTablesTable = async (args: GetApiSchemaTablesTableArgs, options: GetApiSchemaTablesTableOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/schema/tables/${encodeURIComponent(String(args.table))}${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(table, await res.json())
};