import {z} from 'zod'

export type GetApiEventSchemaArgs = {status?: ('ACTIVE' | 'INACTIVE') | undefined, nextToken?: string | undefined, pageSize?: number | undefined};

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

export const eventAttributeSchema = z.object({name: z.string().max(50), defaultUnit: z.string().max(10).optional()});

export const dimensionsSchema = z.object({name: z.string().max(50)});

export const featureDetails = z.object({featureId: z.string(), attributeName: z.string()});

export const dependency = z.object({type: z.literal("SETTING"), key: z.string(), name: z.string()});

export const field = z.object({name: z.string(), type: z.enum(["ATTRIBUTE", "DIMENSION"]), enrichmentType: z.enum(["VALUE", "JSON_LOGIC", "JSON_LOGIC_FROM_DEPENDENCY"]), value: z.string(), order: z.number().int()});

export const enrichments = z.object({dependencies: z.array(dependency).optional(), fields: z.array(field)});

export const eventSchemaListData = z.object({name: z.string().max(50), description: z.string().max(255).optional(), version: z.number().int().gte(1), status: z.enum(["DRAFT", "ACTIVE", "INACTIVE", "ARCHIVED"]).optional(), attributes: z.array(eventAttributeSchema).optional(), dimensions: z.array(dimensionsSchema).optional(), filterFields: z.array(z.string()).optional(), featureDetails: featureDetails.optional(), enrichments: enrichments.optional(), eventIdTemplate: z.string().optional(), eventLevelRevenue: z.boolean().optional(), createdAt: z.string().optional(), updatedAt: z.string().optional(), usageMetersCount: z.number().int().optional()});

export const paginationOptions = z.object({pageSize: z.number().int().optional(), sortOrder: z.enum(["ASC", "DESC"]).optional()});

export const eventSchemaListPaginatedResponse = z.object({data: z.array(eventSchemaListData).optional(), nextToken: z.string().optional(), context: paginationOptions.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
};

/**
 * List event schemas
 * 
 * GET /event_schema
 */
export const getApiEventSchema = async (args: GetApiEventSchemaArgs, options?: GetApiEventSchemaOptions) => {
const {baseUrl = "https://api.togai.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.status != null) query.append("status", String(args.status))
if (args.nextToken != null) query.append("nextToken", String(args.nextToken))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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