import {z} from 'zod'

export type GetApiEmployeesEmployeeIdProjectsArgs = {employeeId: number};

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

export const projectStatus = z.enum(["PLANNING", "ACTIVE", "COMPLETED", "ON_HOLD"]);

export const engagementLevel = z.enum(["FULL_TIME", "PARTIAL_PLUS", "HALF_TIME", "ON_DEMAND"]);

export const dateString = z.string();

export const duration = z.object({years: z.number().int(), months: z.number().int(), days: z.number().int()});

export const projectEmployeeInvolvement = z.object({employeeId: z.number().int(), projectId: z.string(), employeeName: z.string(), employeePosition: z.string(), employeeURL: z.string().optional(), projectName: z.string(), projectStatus: projectStatus, engagementLevel: engagementLevel, startDate: dateString, endDate: dateString.optional(), duration: duration});

export const getApiEmployeesEmployeeIdProjectsResponse = z.object({employee: z.object({id: z.number(), name: z.string(), position: z.string(), department: z.string(), imgURL: z.string().optional()}), projects: z.array(projectEmployeeInvolvement)});

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 projects which employee is assigned to
 * 
 * GET /employees/{employeeId}/projects
 */
export const getApiEmployeesEmployeeIdProjects = async (args: GetApiEmployeesEmployeeIdProjectsArgs, options?: GetApiEmployeesEmployeeIdProjectsOptions) => {
const {baseUrl = "http://localhost:3000", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/employees/${encodeURIComponent(String(args.employeeId))}/projects${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(getApiEmployeesEmployeeIdProjectsResponse, await res.json())
};