import {z} from 'zod'

export type GetApiApiOrgIdAiUsageArgs = {org_id: string};

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

export const aiCreditCosts = z.object({chat: z.number().int().gte(0), incident: z.number().int().gte(0), incident_reanalysis: z.number().int().gte(0)});

export const aiUsageResponse = z.object({costs: aiCreditCosts, credits_limit: z.number().int().gte(0), credits_remaining: z.number().int().gte(0), credits_used: z.number().int().gte(0), mode: z.string(), payer_org_id: z.string().nullable().optional(), requires_additional_credits: z.boolean(), used_by_feature: aiCreditCosts.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
};

/**
 * Get AI credit usage for an organization
 * 
 * GET /api/{org_id}/ai/usage
 */
export const getApiApiOrgIdAiUsage = async (args: GetApiApiOrgIdAiUsageArgs, options: GetApiApiOrgIdAiUsageOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Authorization} = options ?? {}

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

if (Authorization !== undefined) headers.set("Authorization", Authorization)

const url = `${baseUrl.replace(/\/+$/, '')}/api/${encodeURIComponent(String(args.org_id))}/ai/usage${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(aiUsageResponse, await res.json())
};