import {z} from 'zod'

export type GetApiApiV2TasksArgs = {modifiedSince?: string | undefined};

export type GetApiApiV2TasksOptions = {baseUrl?: string | undefined, mms?: string | undefined, fetch?: typeof fetch | undefined};

export const taskDTO = z.object({id: z.string().optional(), name: z.string().min(1), type: z.enum(["GENERAL", "ANAMNESIS", "COORDINATION_FITNESS_TEST", "HEALTH_FITNESS_TEST", "PWC_FITNESS_TEST", "MAX_FORCE_FITNESS_TEST", "MOBILITY_SCREEN_FITNESS_TEST", "BLOOD_PRESSURE_FITNESS_TEST", "POLAR_FITNESS_TEST", "INBODY_FITNESS_TEST", "JAWON_FITNESS_TEST"]).optional(), dueDate: z.string(), authorId: z.string().min(1), targetId: z.string().min(1), completerId: z.string().optional(), completed: z.boolean().optional()});

export const getApiApiV2TasksResponse = z.array(taskDTO);

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
};

/**
 * Retrieve all tasks
 * 
 * GET /api/v2/tasks
 */
export const getApiApiV2Tasks = async (args: GetApiApiV2TasksArgs, options?: GetApiApiV2TasksOptions) => {
const {baseUrl = "https://mms.api.ed.ts.egym.coffee", fetch: fetchFn = fetch, mms} = options ?? {}

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

if (args.modifiedSince != null) query.append("modifiedSince", String(args.modifiedSince))
if (mms !== undefined) headers.set("x-api-key", mms)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/tasks${query.size > 0 ? `?${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(getApiApiV2TasksResponse, await res.json())
};