import {z} from 'zod'

export type GetApiV1LinksArgs = {limit?: number | undefined, after?: string | undefined, before?: string | undefined, state?: ('active' | 'pending' | 'disabled' | 'archived') | undefined, scope?: string | undefined, q?: string | undefined};

export type GetApiV1LinksOptions = {baseUrl?: string | undefined, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const fieldOption = z.object({id: z.string(), value: z.string()});

export const linkField = z.object({id: z.string(), is_required: z.boolean(), label: z.string(), options: z.array(fieldOption), type: z.enum(["short_text", "long_text", "checkboxes", "radios", "select", "url", "hidden"])});

export const scopePreview = z.object({id: z.string(), name: z.string(), slug: z.string()});

export const link = z.object({default_duration: z.number().int(), description: z.string().optional(), durations: z.array(z.number().int()), fields: z.array(linkField), id: z.string(), increment: z.number().int(), name: z.string(), private_name: z.string().nullable().optional(), scope: scopePreview.optional(), slug: z.string(), state: z.enum(["active", "pending", "disabled", "archived", "deleted"])});

export const paginationMeta = z.object({after: z.string().nullable().optional(), before: z.string().nullable().optional(), limit: z.number().int()});

export const linkListResponse = z.object({entries: z.array(link), metadata: paginationMeta});

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 scheduling links
 * 
 * GET /v1/links
 * 
 * Also accepts auth: PersonalAccessToken
 */
export const getApiV1Links = async (args: GetApiV1LinksArgs, options?: GetApiV1LinksOptions) => {
const {baseUrl = "https://api.savvycal.com", fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.after != null) query.append("after", String(args.after))
if (args.before != null) query.append("before", String(args.before))
if (args.state != null) query.append("state", String(args.state))
if (args.scope != null) query.append("scope", String(args.scope))
if (args.q != null) query.append("q", String(args.q))
if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/links${query.size > 0 ? `?${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(linkListResponse, await res.json())
};