import {z} from 'zod'

export type GetApiApiV1TelemetryStatsArgs = {metricNames?: string | undefined, profile?: string | undefined, bypassCache?: boolean | undefined};

export type GetApiApiV1TelemetryStatsOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const errorEntity = z.object({errorCode: z.string().optional(), message: z.string().optional(), fieldName: z.string().optional()});

export const metricValue = z.object({name: z.string().optional(), description: z.string().optional(), category: z.enum(["DIFFERENTIATING_FEATURES", "PAID_FEATURES", "PLATFORM_SPECIFIC_CUSTOMIZATION", "SOPHISTICATED_CONTENT_ARCHITECTURE", "POSITIVE_USER_EXPERIENCE", "PLATFORM_SPECIFIC_DEVELOPMENT", "RECENT_ACTIVITY", "HISTORY_LEGACY_DEPRECATED_FEATURES"]).optional(), feature: z.enum(["CONTENTLETS", "LANGUAGES", "CONTENT_TYPES", "SITES", "URL_MAPS", "WORKFLOW", "USERS", "SITE_SEARCH", "IMAGE_API", "LAYOUT", "CONTENT_TYPE_FIELDS", "AI", "EXPERIMENTS"]).optional(), value: z.object({}).optional()});

export const metric = z.object({name: z.string().optional(), description: z.string().optional(), category: z.enum(["DIFFERENTIATING_FEATURES", "PAID_FEATURES", "PLATFORM_SPECIFIC_CUSTOMIZATION", "SOPHISTICATED_CONTENT_ARCHITECTURE", "POSITIVE_USER_EXPERIENCE", "PLATFORM_SPECIFIC_DEVELOPMENT", "RECENT_ACTIVITY", "HISTORY_LEGACY_DEPRECATED_FEATURES"]).optional(), feature: z.enum(["CONTENTLETS", "LANGUAGES", "CONTENT_TYPES", "SITES", "URL_MAPS", "WORKFLOW", "USERS", "SITE_SEARCH", "IMAGE_API", "LAYOUT", "CONTENT_TYPE_FIELDS", "AI", "EXPERIMENTS"]).optional()});

export const metricCalculationError = z.object({name: z.string().optional(), description: z.string().optional(), category: z.enum(["DIFFERENTIATING_FEATURES", "PAID_FEATURES", "PLATFORM_SPECIFIC_CUSTOMIZATION", "SOPHISTICATED_CONTENT_ARCHITECTURE", "POSITIVE_USER_EXPERIENCE", "PLATFORM_SPECIFIC_DEVELOPMENT", "RECENT_ACTIVITY", "HISTORY_LEGACY_DEPRECATED_FEATURES"]).optional(), feature: z.enum(["CONTENTLETS", "LANGUAGES", "CONTENT_TYPES", "SITES", "URL_MAPS", "WORKFLOW", "USERS", "SITE_SEARCH", "IMAGE_API", "LAYOUT", "CONTENT_TYPE_FIELDS", "AI", "EXPERIMENTS"]).optional(), error: z.string().optional(), type: metric.optional()});

export const metricTiming = z.object({metricName: z.string().optional(), durationMs: z.number().int().optional(), cacheHit: z.boolean().optional(), computationMs: z.number().int().optional(), timedOut: z.boolean().optional(), slow: z.boolean().optional()});

export const metricsSnapshot = z.object({stats: z.array(metricValue).optional(), errors: z.array(metricCalculationError).optional(), timings: z.array(metricTiming).optional(), notNumericMetricValues: z.array(metricValue).optional()});

export const messageEntity = z.object({message: z.string().optional()});

export const pagination = z.object({currentPage: z.number().int().optional(), perPage: z.number().int().optional(), totalEntries: z.number().int().optional()});

export const responseEntityMetricsSnapshotView = z.object({errors: z.array(errorEntity).optional(), entity: metricsSnapshot.optional(), messages: z.array(messageEntity).optional(), i18nMessagesMap: z.record(z.string(), z.string()).optional(), permissions: z.array(z.string()).optional(), pagination: pagination.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
};

/**
 * Retrieves dotCMS usage data
 * 
 * GET /api/v1/telemetry/stats
 */
export const getApiApiV1TelemetryStats = async (args: GetApiApiV1TelemetryStatsArgs, options: GetApiApiV1TelemetryStatsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.metricNames != null) query.append("metricNames", String(args.metricNames))
if (args.profile != null) query.append("profile", String(args.profile))
if (args.bypassCache != null) query.append("bypassCache", String(args.bypassCache))

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