import {z} from 'zod'

export type Chain = 'mainnet' | 'hoodi';

export type Timestamp = number;

export type TimeRangeStartEnd = {start: Timestamp, end: Timestamp};

export type TimeRangeSelectorTime = {timestamp: TimeRangeStartEnd};

export type Epoch = number;

export type EpochByNumber = {number: Epoch};

export type ChainView = 'latest' | 'finalized';

export type EpochByChainView = {view: ChainView};

export type EpochSelector = EpochByNumber | EpochByChainView;

export type EpochRangeStartEnd = {start: EpochSelector, end: EpochSelector};

export type TimeRangeSelectorEpoch = {epoch: EpochRangeStartEnd};

export type Slot = number;

export type SlotByNumber = {number: Slot};

export type ConsensusLayerBlockRoot = string;

export type SlotByConsensusLayerBlockRoot = {root: ConsensusLayerBlockRoot};

export type SlotByChainView = {view: ChainView};

export type SlotSelector = SlotByNumber | SlotByConsensusLayerBlockRoot | SlotByChainView;

export type SlotRangeStartEnd = {start?: SlotSelector | undefined, end?: SlotSelector | undefined};

export type TimeRangeSelectorSlot = {slot: SlotRangeStartEnd};

export type TimeRangeSelectorNullable = TimeRangeSelectorTime | TimeRangeSelectorEpoch | TimeRangeSelectorSlot | null;

export type Cursor = string;

export type PageSize = number;

export type NetworkMevTimingRequest = {chain?: Chain | undefined, range?: TimeRangeSelectorNullable | undefined, min_slots_per_day?: number | undefined, cursor?: Cursor | undefined, page_size?: PageSize | undefined};

export type CreateApiApiV2EthereumMevTimingArgs = {body: NetworkMevTimingRequest};

export type CreateApiApiV2EthereumMevTimingOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const timestamp = z.number().int().gte(0);

export const mevTimingBreakdown = z.object({on_time_mev: z.number().int().gte(0), timing_games: z.number().int().gte(0), aggressive_tg: z.number().int().gte(0)});

export const wei = z.string();

export const mevTimingBucket = z.object({slot_offset_ms_min: z.number().int(), slot_offset_ms_max: z.number().int(), count: z.number().int().gte(0), max_value: wei.nullable()});

export const mevTimingHistogram = z.array(mevTimingBucket);

export const mevTimingDailyData = z.object({timestamp: timestamp, date: z.string(), slots_with_relay: z.number().int().gte(0), slots_with_relay_winners: z.number().int().gte(0), slots_without_relay: z.number().int().gte(0), timing_breakdown: mevTimingBreakdown, median_slot_offset_ms: z.number().nullable(), histogram: mevTimingHistogram});

export const paging = z.object({next_cursor: z.string().optional()});

export const slot = z.number().int().gte(0);

export const slotRange = z.object({start: slot, end: slot});

export const epoch = z.number().int().gte(0);

export const epochRange = z.object({start: epoch, end: epoch});

export const timeRange = z.object({start: timestamp, end: timestamp});

export const resultRange = z.object({slot: slotRange, epoch: epochRange, timestamp: timeRange});

export const createApiApiV2EthereumMevTimingResponse = z.object({data: z.array(mevTimingDailyData), paging: paging.optional(), range: resultRange});

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
};

/**
 * Network MEV Timing
 * 
 * POST /api/v2/ethereum/mev-timing
 */
export const createApiApiV2EthereumMevTiming = async (args: CreateApiApiV2EthereumMevTimingArgs, options?: CreateApiApiV2EthereumMevTimingOptions) => {
const {baseUrl = "https://beaconcha.in", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/ethereum/mev-timing${query.size > 0 ? `?${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(createApiApiV2EthereumMevTimingResponse, await res.json())
};