import {z} from 'zod'

export type Currency = string;

export type CurrencyIn = Currency | number;

export type InsightNew = {effort?: ('not_set' | 'low' | 'medium' | 'high') | undefined, cost_impact?: CurrencyIn | undefined, status?: ('new' | 'in_progress' | 'on_hold' | 'addressed' | 'ignored') | undefined, category?: string | undefined, link?: string | undefined, description?: string | undefined, title?: string | undefined};

export type CreateApiV2InsightsArgs = {'cloudzero-idempotency-key'?: string | undefined, 'cloudzero-test-key'?: string | undefined, body: InsightNew};

export type CreateApiV2InsightsOptions = {baseUrl?: string | undefined, APIKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const epoch = z.string();

export const insight = z.object({effort: z.enum(["not_set", "low", "medium", "high"]).optional(), cost_impact: z.string().optional(), status: z.enum(["new", "in_progress", "on_hold", "addressed", "ignored"]).optional(), category: z.string().optional(), link: z.string().optional(), description: z.string().optional(), title: z.string().optional(), id: z.string(), created: epoch, last_updated: epoch});

export const createApiV2InsightsResponse = z.object({insight: insight.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 a new Insight
 * 
 * POST /v2/insights
 */
export const createApiV2Insights = async (args: CreateApiV2InsightsArgs, options?: CreateApiV2InsightsOptions) => {
const {baseUrl = "https://api.cloudzero.com", fetch: fetchFn = fetch, APIKeyAuth} = options ?? {}

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

if (args['cloudzero-idempotency-key'] != null) headers.set("cloudzero-idempotency-key", String(args['cloudzero-idempotency-key']))
if (args['cloudzero-test-key'] != null) headers.set("cloudzero-test-key", String(args['cloudzero-test-key']))
if (APIKeyAuth !== undefined) headers.set("Authorization", APIKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/insights${query.size > 0 ? `?${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(createApiV2InsightsResponse, await res.json())
};