import {z} from 'zod'

export type GetApiV1ObservabilityLogsFieldsOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const metricAggregation = z.enum(["count", "count_distinct", "sum", "avg", "min", "max", "p50", "p90", "p95", "p99"]);

export const otelFieldDefinition = z.object({name: z.string(), label: z.string(), type: z.enum(["ENUM", "TEXT", "INT", "FLOAT", "BOOL", "TIMESTAMP", "ARRAY", "MAP"]), group: z.string().nullable().optional(), source_attribute_key: z.string().nullable().optional(), supported_operators: z.array(z.enum(["eq", "neq", "lt", "lte", "gt", "gte", "like", "ilike", "not_like", "not_ilike", "between", "not_between", "in", "not_in", "exists", "not_exists", "regexp", "not_regexp", "contains", "not_contains", "has", "hasAny", "hasAll", "hasToken"])), supported_aggregations: z.array(metricAggregation)});

export const getLogFields = z.object({field_definitions: z.array(otelFieldDefinition)});

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 log field definitions
 * 
 * GET /v1/observability/logs/fields
 */
export const getApiV1ObservabilityLogsFields = async (options?: GetApiV1ObservabilityLogsFieldsOptions) => {
const {baseUrl = "https://api.mistral.ai", fetch: fetchFn = fetch, ApiKey} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/observability/logs/fields${query.size > 0 ? `?${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(getLogFields, await res.json())
};