import {z} from 'zod'

export type QueryConfigSchema = {table: string, fields: Array<string>, filters?: (Array<Record<string, never>> | null) | undefined, aggregations?: ({[key: string]: string} | null) | undefined, groupBy?: (Array<string> | null) | undefined, temporalGrouping?: ({[key: string]: 'hour' | 'day' | 'week' | 'month' | 'quarter' | 'year'} | null) | undefined, orderBy?: ({[key: string]: string} | null) | undefined};

export type CreateWidgetSchema = {dashboardId: string, title: string, description?: (string | null) | undefined, chartType: string, queryConfig: QueryConfigSchema, chartConfig?: (Record<string, never> | null) | undefined, layoutPosition: Record<string, never>, orderIndex?: number | undefined};

export type CreateApiAnalyticsWidgetsArgs = {TENANT: string, 'API-KEY': string, body: CreateWidgetSchema};

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

export const queryConfigSchema = z.object({table: z.string(), fields: z.array(z.string()), filters: z.array(z.object({})).nullable().optional(), aggregations: z.record(z.string(), z.string()).nullable().optional(), groupBy: z.array(z.string()).nullable().optional(), temporalGrouping: z.record(z.string(), z.enum(["hour", "day", "week", "month", "quarter", "year"])).nullable().optional(), orderBy: z.record(z.string(), z.string()).nullable().optional()});

export const dashboardWidgetSchema = z.object({id: z.string(), dashboardId: z.string(), title: z.string(), description: z.string().nullable().optional(), chartType: z.string(), queryConfig: queryConfigSchema, chartConfig: z.object({}).nullable().optional(), layoutPosition: z.object({}), isArchived: z.boolean(), orderIndex: z.number().int(), createdDate: z.string(), updatedDate: z.string().nullable().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
};

/**
 * Create Widget
 * 
 * POST /analytics/widgets
 */
export const createApiAnalyticsWidgets = async (args: CreateApiAnalyticsWidgetsArgs, options: CreateApiAnalyticsWidgetsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.TENANT != null) headers.set("TENANT", String(args.TENANT))
if (args['API-KEY'] != null) headers.set("API-KEY", String(args['API-KEY']))

const url = `${baseUrl.replace(/\/+$/, '')}/analytics/widgets${query.size > 0 ? `?${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(dashboardWidgetSchema, await res.json())
};