import {z} from 'zod'

export type ChangeRequestStatus = 'open' | 'applied' | 'closed';

export type ChangeRequestScheduleFilter = 'nonScheduled' | 'scheduled';

export type ChangeRequestApproveRequiredFilter = 'approveNotRequired' | 'approveRequired';

export type NeedsAttentionFilter = 'notNeedsAttention' | 'needsAttention';

export type GetApiV2ProductsProductIdChangeRequestsArgs = {productId: string, configId?: string | undefined, environmentId?: string | undefined, settingId?: number | undefined, changeRequestStatusFilter?: Array<ChangeRequestStatus> | undefined, scheduleFilter?: ChangeRequestScheduleFilter | undefined, approveRequiredFilter?: ChangeRequestApproveRequiredFilter | undefined, needsAttentionFilter?: NeedsAttentionFilter | undefined, pageNumber?: number | undefined, pageSize?: number | undefined};

export type GetApiV2ProductsProductIdChangeRequestsOptions = {baseUrl?: string | undefined, Basic?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const pagingResponseInfo = z.object({currentPage: z.number().int(), totalPages: z.number().int(), pageSize: z.number().int(), totalCount: z.number().int(), hasPrevious: z.boolean(), hasNext: z.boolean()});

export const changeRequestStatus = z.enum(["open", "applied", "closed"]);

export const changeRequestSummaryModel = z.object({changeRequestId: z.number().int(), changeRequestStatus: changeRequestStatus, needsAttention: z.boolean(), title: z.string(), reason: z.string().nullable(), applyAt: z.string().nullable(), createdAt: z.string(), creatorUserEmail: z.string(), creatorUserFullName: z.string(), creatorUserId: z.string().nullable(), affectedSettingKeys: z.array(z.string()), commentCount: z.number().int(), approved: z.boolean(), conflictCount: z.number().int(), bypassApproval: z.boolean(), appliedAt: z.string().nullable(), appliedByUserId: z.string().nullable(), appliedByUserEmail: z.string().nullable(), appliedByUserFullName: z.string().nullable(), closedAt: z.string().nullable(), closedByUserId: z.string().nullable(), closedByUserEmail: z.string().nullable(), closedByUserFullName: z.string().nullable(), sendNotificationsToApprovers: z.boolean()});

export const changeRequestSummaryModelPagedList = z.object({paging: pagingResponseInfo.nullable(), data: z.array(changeRequestSummaryModel).nullable()});

export const changeRequestsModel = z.object({changeRequests: changeRequestSummaryModelPagedList});

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 Change Requests
 * 
 * GET /v2/products/{productId}/change-requests
 */
export const getApiV2ProductsProductIdChangeRequests = async (args: GetApiV2ProductsProductIdChangeRequestsArgs, options?: GetApiV2ProductsProductIdChangeRequestsOptions) => {
const {baseUrl = "https://api.configcat.com", fetch: fetchFn = fetch, Basic} = options ?? {}

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

if (args.configId != null) query.append("configId", String(args.configId))
if (args.environmentId != null) query.append("environmentId", String(args.environmentId))
if (args.settingId != null) query.append("settingId", String(args.settingId))
for (const item of args.changeRequestStatusFilter ?? []) query.append("changeRequestStatusFilter", String(item))
if (args.scheduleFilter != null) query.append("scheduleFilter", String(args.scheduleFilter))
if (args.approveRequiredFilter != null) query.append("approveRequiredFilter", String(args.approveRequiredFilter))
if (args.needsAttentionFilter != null) query.append("needsAttentionFilter", String(args.needsAttentionFilter))
if (args.pageNumber != null) query.append("pageNumber", String(args.pageNumber))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (Basic !== undefined) headers.set('authorization', `Basic ${btoa(`${Basic.username}:${Basic.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/products/${encodeURIComponent(String(args.productId))}/change-requests${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(changeRequestsModel, await res.json())
};