import {z} from 'zod'

export type HierarchyItemSelector = {contractID?: (string | null) | undefined, instanceID?: (string | null) | undefined, clientArtifactID?: (number | null) | undefined, matterArtifactID?: (number | null) | undefined, workspaceArtifactID?: (number | null) | undefined};

export type FieldFilter = {fieldName?: (string | null) | undefined, operator?: (string | null) | undefined, value?: (string | null) | undefined};

export type FieldOrder = {fieldName?: (string | null) | undefined, direction?: ('Asc' | 'Desc') | undefined};

export type PagingRequest = {top?: (number | null) | undefined, skip?: (number | null) | undefined, maxItemCount?: (number | null) | undefined, includeCount?: (boolean | null) | undefined, continuationToken?: (string | null) | undefined};

export type GetMonthDetailsRequest = {dateKey?: (string | null) | undefined, metricKeys?: (Array<string> | null) | undefined, subMetricsSummaryKeys?: (Array<string> | null) | undefined, selectorLevel?: ('Workspace' | 'Matter' | 'Client' | 'Instance' | 'Contract') | undefined, itemSelectors?: (Array<HierarchyItemSelector> | null) | undefined, level?: ('Workspace' | 'Matter' | 'Client' | 'Instance' | 'Contract') | undefined, filters?: (Array<FieldFilter> | null) | undefined, order?: FieldOrder | undefined, pagingRequest?: PagingRequest | undefined, shouldUnhashData?: boolean | undefined, includeMaxPrecision?: boolean | undefined};

export type CreateApiApiV2BillingInsightsMonthDetailsArgs = {body: GetMonthDetailsRequest};

export type CreateApiApiV2BillingInsightsMonthDetailsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const contract = z.object({id: z.string().nullable().optional(), name: z.string().nullable().optional()});

export const instance = z.object({id: z.string().nullable().optional(), name: z.string().nullable().optional(), pricingVisibility: z.enum(["Visible", "HiddenResoldInstance", "HiddenFixedContract"]).optional()});

export const client = z.object({artifactID: z.number().int().optional(), name: z.string().nullable().optional(), status: z.string().nullable().optional(), anonymization: z.string().nullable().optional(), anonymizedFields: z.record(z.string(), z.string().nullable()).nullable().optional(), number: z.string().nullable().optional()});

export const matter = z.object({artifactID: z.number().int().optional(), name: z.string().nullable().optional(), anonymization: z.string().nullable().optional(), anonymizedFields: z.record(z.string(), z.string().nullable()).nullable().optional(), number: z.string().nullable().optional()});

export const workspace = z.object({id: z.string().nullable().optional(), artifactID: z.number().int().optional(), name: z.string().nullable().optional(), activityStatus: z.string().nullable().optional(), workspaceStatus: z.string().nullable().optional(), billableStatus: z.string().nullable().optional(), billableComment: z.string().nullable().optional(), anonymization: z.string().nullable().optional(), billableType: z.string().nullable().optional(), anonymizedFields: z.record(z.string(), z.string().nullable()).nullable().optional(), projectType: z.string().nullable().optional()});

export const metricMetadata = z.object({metadataKey: z.string().nullable().optional(), description: z.string().nullable().optional(), data: z.record(z.string(), z.string().nullable()).nullable().optional()});

export const singleSubMetric = z.object({value: z.number().optional(), comment: z.string().nullable().optional()});

export const singleUsageMetric = z.object({collectionTimeUtc: z.string().nullable().optional(), metadata: z.array(metricMetadata).nullable().optional(), comment: z.string().nullable().optional(), subMetrics: z.record(z.string(), singleSubMetric).nullable().optional(), reportedValue: z.number().optional(), reportedValueMaxPrecision: z.number().nullable().optional()});

export const money = z.object({value: z.number().optional(), currency: z.string().nullable().optional()});

export const singlePricedMetric = z.object({collectionTimeUtc: z.string().nullable().optional(), metadata: z.array(metricMetadata).nullable().optional(), comment: z.string().nullable().optional(), subMetrics: z.record(z.string(), singleSubMetric).nullable().optional(), billableValue: z.number().optional(), amount: money.optional(), missingCostReason: z.string().nullable().optional()});

export const getMonthDetailsResponseItem = z.object({contract: contract.optional(), instance: instance.optional(), client: client.optional(), matter: matter.optional(), workspace: workspace.optional(), usageMetrics: z.record(z.string(), singleUsageMetric).nullable().optional(), pricedMetrics: z.record(z.string(), singlePricedMetric).nullable().optional(), pricedMetricsSubMetricsSummary: z.record(z.string(), singleSubMetric).nullable().optional(), usageMetricsSubMetricsSummary: z.record(z.string(), singleSubMetric).nullable().optional()});

export const pagingResponse = z.object({totalRecordCount: z.number().int().nullable().optional(), continuationToken: z.string().nullable().optional()});

export const getMonthDetailsResponse = z.object({results: z.array(getMonthDetailsResponseItem).nullable().optional(), pagingResponse: pagingResponse.optional(), status: z.enum(["OK", "ContractExpired", "ContractNotAvailable", "ContractInPreparation", "MissingDataForContract", "FunctionalityDisabled", "MissingMetricsGuid"]).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
};

/**
 * Get monthly billing metrics
 * 
 * POST /api/v2/billing-insights/month-details
 */
export const createApiApiV2BillingInsightsMonthDetails = async (args: CreateApiApiV2BillingInsightsMonthDetailsArgs, options?: CreateApiApiV2BillingInsightsMonthDetailsOptions) => {
const {baseUrl = "https://billing-insights.api.relativity.one/billing-drilldown-api", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/billing-insights/month-details${query.size > 0 ? `?${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(getMonthDetailsResponse, await res.json())
};