import {z} from 'zod'

export type GetApiTrainingStatusArgs = {startAt?: number | undefined, maxResults?: number | undefined, email: string, projectId?: string | undefined};

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

export const getApiTrainingStatusResponse = z.object({startAt: z.number().int().gte(-9007199254740991).lte(9007199254740991), maxResults: z.number().int().gte(-9007199254740991).lte(9007199254740991), user: z.object({id: z.string(), email: z.string(), name: z.string().nullable()}), isTrained: z.boolean(), externalTrainingStatuses: z.array(z.object({source: z.string(), status: z.enum(["TRAINED", "OVERDUE"]), message: z.string().nullable(), url: z.string().nullable(), updatedAt: z.string()})), documents: z.array(z.object({id: z.string(), itemKey: z.string().nullable(), title: z.string(), projectId: z.string(), state: z.enum(["NOT_REQUIRED", "OVERDUE", "TRAINED", "TRAINING_PERIOD"]), trainingSchedule: z.enum(["ONCE", "MONTHLY", "QUARTERLY", "YEARLY"]).nullable(), currentPeriod: z.object({start: z.string(), deadline: z.string()}).nullable(), nextPeriod: z.object({start: z.string(), deadline: z.string()}).nullable(), acknowledgement: z.object({acknowledgedAt: z.string(), inheritedFromPreviousRevision: z.boolean()}).nullable(), previousAcknowledgement: z.object({acknowledgedAt: z.string(), revision: z.number().int().gte(-9007199254740991).lte(9007199254740991).nullable(), controlledRevision: z.number().int().gte(-9007199254740991).lte(9007199254740991).nullable()}).nullable()}))});

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 a user's training status by email
 * 
 * GET /training/status
 */
export const getApiTrainingStatus = async (args: GetApiTrainingStatusArgs, options?: GetApiTrainingStatusOptions) => {
const {baseUrl = "https://app.ketryx.com/api/v1", fetch: fetchFn = fetch, Authorization} = options ?? {}

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

if (args.startAt != null) query.append("startAt", String(args.startAt))
if (args.maxResults != null) query.append("maxResults", String(args.maxResults))
if (args.email != null) query.append("email", String(args.email))
if (args.projectId != null) query.append("projectId", String(args.projectId))
if (Authorization !== undefined) headers.set('authorization', `Bearer ${Authorization}`)

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