import {z} from 'zod'

export type LogicalOp = 'and' | 'or';

export type PairOperator = '=' | '!=';

export type DimensionCondition = {items: Array<Record<string, never>>, op: LogicalOp, type: 'group'} | {key: string, operator: PairOperator, type: 'pair', value: string};

export type ValuesRequest = {condition?: (DimensionCondition | null) | undefined, key: string, prefix?: string | undefined};

export type CreateApiApiV2OrgIdDowntimesValuesArgs = {org_id: string, body: ValuesRequest};

export type CreateApiApiV2OrgIdDowntimesValuesOptions = {baseUrl: string, Authorization?: string | undefined, fetch?: typeof fetch | undefined};

export const valueSuggestion = z.object({items: z.number().int().gte(0), last_seen: z.number().int().nullable().optional(), source: z.string(), value: z.string()});

export const valuesResponse = z.object({partial: z.boolean(), values: z.array(valueSuggestion)});

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
};

/**
 * Suggested values of a dimension
 * 
 * POST /api/v2/{org_id}/downtimes/values
 */
export const createApiApiV2OrgIdDowntimesValues = async (args: CreateApiApiV2OrgIdDowntimesValuesArgs, options: CreateApiApiV2OrgIdDowntimesValuesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Authorization} = options ?? {}

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

if (Authorization !== undefined) headers.set("Authorization", Authorization)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/${encodeURIComponent(String(args.org_id))}/downtimes/values${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(valuesResponse, await res.json())
};