import {z} from 'zod'

export type IntervalEnum = 'year' | 'quarter' | 'month' | 'week' | 'day' | 'hour' | 'minute' | 'second';

export type GetApiApiV1EventsGraphArgs = {tracker?: (Array<string> | null) | undefined, startDate?: string | undefined, endDate?: string | undefined, interval?: IntervalEnum | undefined};

export type GetApiApiV1EventsGraphOptions = {baseUrl: string, OAuth2PasswordBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const appEventsGraphDataPoint = z.object({timestamp: z.string(), clicks: z.number().int().optional(), uniqueClicks: z.number().int().optional(), installs: z.number().int().optional(), leads: z.number().int().optional(), firstSales: z.number().int().optional(), repeatedSales: z.number().int().optional(), totalEvents: z.number().int().optional()});

export const appEventsGraphDTO = z.object({interval: z.string(), startDate: z.string(), endDate: z.string(), dataPoints: z.array(appEventsGraphDataPoint), totalDataPoints: z.number().int(), summary: z.record(z.string(), z.number().int())});

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 Event Time Series for Charts 📈
 * 
 * GET /api/v1/events/graph
 */
export const getApiApiV1EventsGraph = async (args: GetApiApiV1EventsGraphArgs, options: GetApiApiV1EventsGraphOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2PasswordBearer} = options ?? {}

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

for (const item of args.tracker ?? []) query.append("tracker", String(item))
if (args.startDate != null) query.append("startDate", String(args.startDate))
if (args.endDate != null) query.append("endDate", String(args.endDate))
if (args.interval != null) query.append("interval", String(args.interval))
if (OAuth2PasswordBearer !== undefined) headers.set('authorization', `Bearer ${OAuth2PasswordBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/events/graph${query.size > 0 ? `?${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(appEventsGraphDTO, await res.json())
};