import {z} from 'zod'

export type GetApiApiV2CoreCoursesArgs = {Authorization: string, start?: number | undefined, limit?: number | undefined, query?: string | undefined, recommendedFor?: string | undefined, courseType?: string | undefined, exclude?: string | undefined, keyList?: string | undefined};

export type GetApiApiV2CoreCoursesOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const courseSchema = z.object({courseId: z.string().nullable().optional(), skills: z.array(z.string()).nullable().optional(), groupId: z.string().nullable().optional(), durationHours: z.number().nullable().optional(), category: z.string().nullable().optional(), imageUrl: z.string().nullable().optional(), systemId: z.string().nullable().optional(), courseType: z.string().nullable().optional(), difficulty: z.string().nullable().optional(), courseUrl: z.string().nullable().optional(), title: z.string().nullable().optional(), ratingCount: z.number().int().nullable().optional(), rating: z.number().nullable().optional(), lmsCourseId: z.string().nullable().optional(), language: z.string().nullable().optional(), efSkills: z.array(z.string()).nullable().optional(), status: z.string().nullable().optional(), provider: z.string().nullable().optional(), publishedDate: z.string().nullable().optional(), description: z.string().nullable().optional()});

export const metaSchema = z.object({totalCount: z.number().int().nullable().optional(), pageTotalCount: z.number().int().nullable().optional(), pageStartIndex: z.number().int().nullable().optional()});

export const getApiApiV2CoreCoursesResponse = z.object({data: z.array(courseSchema).optional(), meta: metaSchema.optional()});

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 Courses
 * 
 * GET /api/v2/core/courses
 */
export const getApiApiV2CoreCourses = async (args: GetApiApiV2CoreCoursesArgs, options?: GetApiApiV2CoreCoursesOptions) => {
const {baseUrl = "https://apiv2.eightfold.ai", fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args.start != null) query.append("start", String(args.start))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.query != null) query.append("query", String(args.query))
if (args.recommendedFor != null) query.append("recommendedFor", String(args.recommendedFor))
if (args.courseType != null) query.append("courseType", String(args.courseType))
if (args.exclude != null) query.append("exclude", String(args.exclude))
if (args.keyList != null) query.append("keyList", String(args.keyList))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/core/courses${query.size > 0 ? `?${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(getApiApiV2CoreCoursesResponse, await res.json())
};