import {z} from 'zod'

export type GetApiProjectsArgs = {page?: number | undefined, itemsPerPage?: number | undefined};

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

export const project = z.object({id: z.string().optional(), integration: z.string().optional(), srcId: z.string().optional(), projectName: z.string().nullable().optional(), customerId: z.string().nullable().optional(), customerName: z.string().nullable().optional(), currency: z.string().nullable().optional(), status: z.string().nullable().optional(), billingType: z.string().nullable().optional(), rate: z.number().int().nullable().optional(), totalHours: z.number().nullable().optional(), billableHours: z.number().nullable().optional(), created: z.string().nullable().optional(), modified: z.string().nullable().optional()});

export const getApiProjectsResponse = z.array(project);

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
};

/**
 * Retrieves the collection of Project resources.
 * 
 * GET /projects
 */
export const getApiProjects = async (args: GetApiProjectsArgs, options?: GetApiProjectsOptions) => {
const {baseUrl = "https://example.myintranetapps.com/api", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.itemsPerPage != null) query.append("itemsPerPage", String(args.itemsPerPage))
if (BasicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${BasicAuth.username}:${BasicAuth.password}`)}`)

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